Redact LDAP password if any in request trace (#11750)

Fixes: #11742

.dockerignore

@@ -1,2 +1,9 @@
 .git
 .github
+docs
+default.etcd
+browser
+*.gz
+*.tar.gz
+*.bzip2
+*.zip

.github/workflows/go.yml

@@ -11,8 +11,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x]
-        os: [ubuntu-latest, windows-latest]
+        go-version: [1.16.x]
+        os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
@@ -21,6 +21,14 @@ jobs:
       - uses: actions/setup-go@v2
         with:
           go-version: ${{ matrix.go-version }}
+      - name: Build on ${{ matrix.os }}
+        if: matrix.os == 'macos-latest'
+        env:
+          CGO_ENABLED: 0
+          GO111MODULE: on
+        run: |
+          make
+          make test-race
       - name: Build on ${{ matrix.os }}
         if: matrix.os == 'windows-latest'
         env:
@@ -42,8 +50,6 @@ jobs:
           curl -L -o nancy https://github.com/sonatype-nexus-community/nancy/releases/download/${nancy_version}/nancy-${nancy_version}-linux-amd64 && chmod +x nancy
           go list -m all | ./nancy sleuth
           make
-          diff -au <(gofmt -s -d cmd) <(printf "")
-          diff -au <(gofmt -s -d pkg) <(printf "")
           make test-race
           make crosscompile
           make verify

.golangci.yml

@@ -17,6 +17,8 @@ linters:
     - gosimple
     - deadcode
     - structcheck
+    - gomodguard
+    - gofmt
 
 issues:
   exclude-use-default: false

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.15-alpine as builder
+FROM golang:1.16-alpine as builder
 
 LABEL maintainer="MinIO Inc <dev@min.io>"
 

Dockerfile.cicd

@@ -1,4 +1,4 @@
-FROM golang:1.15-alpine as builder
+FROM golang:1.16-alpine as builder
 
 LABEL maintainer="MinIO Inc <dev@min.io>"
 

Dockerfile.dev

@@ -6,8 +6,6 @@ LABEL maintainer="MinIO Inc <dev@min.io>"
 
 COPY dockerscripts/docker-entrypoint.sh /usr/bin/
 COPY minio /usr/bin/
-COPY CREDITS /licenses/CREDITS
-COPY LICENSE /licenses/LICENSE
 
 ENV MINIO_UPDATE=off \
     MINIO_ACCESS_KEY_FILE=access_key \
@@ -17,10 +15,9 @@ ENV MINIO_UPDATE=off \
     MINIO_KMS_MASTER_KEY_FILE=kms_master_key \
     MINIO_SSE_MASTER_KEY_FILE=sse_master_key
 
-RUN  \
-    microdnf update --nodocs && \
-    microdnf install curl ca-certificates shadow-utils util-linux --nodocs && \
-    microdnf clean all && \
+RUN microdnf update --nodocs
+RUN microdnf install curl ca-certificates shadow-utils util-linux --nodocs
+RUN microdnf clean all && \
     chmod +x /usr/bin/minio  && \
     chmod +x /usr/bin/docker-entrypoint.sh
 

Dockerfile.release

@@ -5,8 +5,8 @@ ARG TARGETARCH
 LABEL name="MinIO" \
       vendor="MinIO Inc <dev@min.io>" \
       maintainer="MinIO Inc <dev@min.io>" \
-      version="RELEASE.2021-01-16T02-19-44Z" \
-      release="RELEASE.2021-01-16T02-19-44Z" \
+      version="RELEASE.2021-03-04T00-53-13Z" \
+      release="RELEASE.2021-03-04T00-53-13Z" \
       summary="MinIO is a High Performance Object Storage, API compatible with Amazon S3 cloud storage service." \
       description="MinIO object storage is fundamentally different. Designed for performance and the S3 API, it is 100% open-source. MinIO is ideal for large, private cloud environments with stringent security requirements and delivers mission-critical availability across a diverse range of workloads."
 

Makefile

@@ -17,32 +17,22 @@ checks:
 getdeps:
 	@mkdir -p ${GOPATH}/bin
 	@which golangci-lint 1>/dev/null || (echo "Installing golangci-lint" && curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin v1.27.0)
-	@which ruleguard 1>/dev/null || (echo "Installing ruleguard" && go get github.com/quasilyte/go-ruleguard/cmd/ruleguard@v0.2.1)
 	@which msgp 1>/dev/null || (echo "Installing msgp" && go get github.com/tinylib/msgp@v1.1.3)
 	@which stringer 1>/dev/null || (echo "Installing stringer" && go get golang.org/x/tools/cmd/stringer)
 
 crosscompile:
 	@(env bash $(PWD)/buildscripts/cross-compile.sh)
 
-verifiers: getdeps fmt lint ruleguard check-gen
+verifiers: getdeps lint check-gen
 
 check-gen:
 	@go generate ./... >/dev/null
 	@(! git diff --name-only | grep '_gen.go$$') || (echo "Non-committed changes in auto-generated code is detected, please commit them to proceed." && false)
 
-fmt:
-	@echo "Running $@ check"
-	@GO111MODULE=on gofmt -d cmd/
-	@GO111MODULE=on gofmt -d pkg/
-
 lint:
 	@echo "Running $@ check"
 	@GO111MODULE=on ${GOPATH}/bin/golangci-lint cache clean
-	@GO111MODULE=on ${GOPATH}/bin/golangci-lint run --timeout=10m --config ./.golangci.yml
-
-ruleguard:
-	@echo "Running $@ check"
-	@${GOPATH}/bin/ruleguard -rules ruleguard.rules.go github.com/minio/minio/...
+	@GO111MODULE=on ${GOPATH}/bin/golangci-lint run --build-tags kqueue --timeout=10m --config ./.golangci.yml
 
 # Builds minio, runs the verifiers then runs the tests.
 check: test
@@ -71,18 +61,18 @@ build: checks
 	@echo "Building minio binary to './minio'"
 	@GO111MODULE=on CGO_ENABLED=0 go build -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
 
-hotfix: LDFLAGS := $(shell MINIO_RELEASE="RELEASE" MINIO_HOTFIX="hotfix.$(shell git rev-parse --short HEAD)" go run buildscripts/gen-ldflags.go $(shell git describe --tags --abbrev=0 | \
-    sed 's#RELEASE\.\([0-9]\+\)-\([0-9]\+\)-\([0-9]\+\)T\([0-9]\+\)-\([0-9]\+\)-\([0-9]\+\)Z#\1-\2-\3T\4:\5:\6Z#'))
-	TAG := "minio/minio:$(shell git describe --tags --abbrev=0).hotfix.$(shell git rev-parse --short HEAD)"
-hotfix: install
+hotfix-vars:
+	$(eval LDFLAGS := $(shell MINIO_RELEASE="RELEASE" MINIO_HOTFIX="hotfix.$(shell git rev-parse --short HEAD)" go run buildscripts/gen-ldflags.go $(shell git describe --tags --abbrev=0 | \
+    sed 's#RELEASE\.\([0-9]\+\)-\([0-9]\+\)-\([0-9]\+\)T\([0-9]\+\)-\([0-9]\+\)-\([0-9]\+\)Z#\1-\2-\3T\4:\5:\6Z#')))
+	$(eval TAG := "minio/minio:$(shell git describe --tags --abbrev=0).hotfix.$(shell git rev-parse --short HEAD)")
+hotfix: hotfix-vars install
 
 docker-hotfix: hotfix checks
 	@echo "Building minio docker image '$(TAG)'"
 	@docker build -t $(TAG) . -f Dockerfile.dev
 
-docker: checks
+docker: build checks
 	@echo "Building minio docker image '$(TAG)'"
-	@GOOS=linux GO111MODULE=on CGO_ENABLED=0 go build -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
 	@docker build -t $(TAG) . -f Dockerfile.dev
 
 # Builds minio and installs it to $GOPATH/bin.

README.md

@@ -5,47 +5,32 @@
 
 MinIO is a High Performance Object Storage released under Apache License v2.0. It is API compatible with Amazon S3 cloud storage service. Use MinIO to build high performance infrastructure for machine learning, analytics and application data workloads.
 
-This README provides quickstart instructions on running MinIO on baremetal hardware, including Docker-based installations. For Kubernetes environments, 
-use the [MinIO Kubernetes Operator](https://github.com/minio/operator/blob/master/README.md). 
-
-**Table of Contents**
-
-- [Docker Installation](#docker-installation)
-- [macOS Installation](#macos)
-- [GNU/Linux Installation](#gnulinux)
-- [Windows Installation](#microsoft-windows)
-- [FreeBSD Installation](#freebsd)
-- [Source Installation](#install-from-source)
-- [Deployment Recommendations](#deployment-recommendations)
-- [Test Connectivity to MinIO](#test-minio-connectivity)
-- [Upgrade MinIO](#upgrading-minio)
-- [Explore Further](#explore-further)
-- [Contribute to MinIO](#contribute-to-minio-project)
-- [License](#license)
+This README provides quickstart instructions on running MinIO on baremetal hardware, including Docker-based installations. For Kubernetes environments,
+use the [MinIO Kubernetes Operator](https://github.com/minio/operator/blob/master/README.md).
 
 # Docker Installation
 
-Use the following commands to run a standalone MinIO server on a Docker container. 
+Use the following commands to run a standalone MinIO server on a Docker container.
 
-Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication 
-require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically, 
-with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html) 
+Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication
+require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically,
+with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html)
 for more complete documentation.
 
 ## Stable
 
-Run the following command to run the latest stable image of MinIO on a Docker container using an ephemeral data volume: 
+Run the following command to run the latest stable image of MinIO on a Docker container using an ephemeral data volume:
 
 ```sh
 docker run -p 9000:9000 minio/minio server /data
 ```
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
 
@@ -60,12 +45,12 @@ Run the following command to run the bleeding-edge image of MinIO on a Docker co
 docker run -p 9000:9000 minio/minio:edge server /data
 ```
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
 
@@ -76,9 +61,9 @@ see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view
 
 Use the following commands to run a standalone MinIO server on macOS.
 
-Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication 
-require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically, 
-with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html) 
+Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication
+require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically,
+with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html)
 for more complete documentation.
 
 ## Homebrew (recommended)
@@ -97,12 +82,12 @@ brew uninstall minio
 brew install minio/stable/minio
 ```
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
 ## Binary Download
@@ -115,12 +100,12 @@ chmod +x minio
 ./minio server /data
 ```
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
 
@@ -145,18 +130,18 @@ The following table lists supported architectures. Replace the `wget` URL with t
 | 64-bit PowerPC LE (ppc64le)    | https://dl.min.io/server/minio/release/linux-ppc64le/minio |
 | IBM Z-Series (S390X)           | https://dl.min.io/server/minio/release/linux-s390x/minio   |
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
 
-> NOTE: Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication 
-require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically, 
-with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html) 
+> NOTE: Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication
+require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically,
+with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html)
 for more complete documentation.
 
 # Microsoft Windows
@@ -173,17 +158,17 @@ Use the following command to run a standalone MinIO server on the Windows host.
 minio.exe server D:\
 ```
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
-> NOTE: Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication 
-require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically, 
-with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html) 
+> NOTE: Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication
+require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically,
+with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html)
 for more complete documentation.
 
 # FreeBSD
@@ -199,27 +184,27 @@ service minio start
 
 # Install from Source
 
-Use the following commands to compile and run a standalone MinIO server from source. Source installation is only intended for developers and advanced users. If you do not have a working Golang environment, please follow [How to install Golang](https://golang.org/doc/install). Minimum version required is [go1.15](https://golang.org/dl/#stable)
+Use the following commands to compile and run a standalone MinIO server from source. Source installation is only intended for developers and advanced users. If you do not have a working Golang environment, please follow [How to install Golang](https://golang.org/doc/install). Minimum version required is [go1.16](https://golang.org/dl/#stable)
 
 ```sh
 GO111MODULE=on go get github.com/minio/minio
 ```
 
-The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded 
-web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the 
+The MinIO deployment starts using default root credentials `minioadmin:minioadmin`. You can test the deployment using the MinIO Browser, an embedded
+web-based object browser built into MinIO Server. Point a web browser running on the host machine to http://127.0.0.1:9000 and log in with the
 root credentials. You can use the Browser to create buckets, upload objects, and browse the contents of the MinIO server.
 
-You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See 
-[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers, 
+You can also connect using any S3-compatible tool, such as the MinIO Client `mc` commandline tool. See
+[Test using MinIO Client `mc`](#test-using-minio-client-mc) for more information on using the `mc` commandline tool. For application developers,
 see https://docs.min.io/docs/ and click **MINIO SDKS** in the navigation to view MinIO SDKs for supported languages.
 
 
-> NOTE: Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication 
-require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically, 
-with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html) 
-for more complete documentation. 
+> NOTE: Standalone MinIO servers are best suited for early development and evaluation. Certain features such as versioning, object locking, and bucket replication
+require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically,
+with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Quickstart Guide](https://docs.min.io/docs/minio-erasure-code-quickstart-guide.html)
+for more complete documentation.
 
-MinIO strongly recommends *against* using compiled-from-source MinIO servers for production environments. 
+MinIO strongly recommends *against* using compiled-from-source MinIO servers for production environments.
 
 # Deployment Recommendations
 

README_zh_CN.md

@@ -78,7 +78,7 @@ minio.exe server D:\Photos
 
 ## FreeBSD
 ### Port
-使用 [pkg](https://github.com/freebsd/pkg)进行安装，, MinIO官方并没有提供FreeBSD二进制文件， 它由FreeBSD上游维护，点击 [这里](https://www.freshports.org/www/minio)查看。
+使用 [pkg](https://github.com/freebsd/pkg)进行安装，MinIO官方并没有提供FreeBSD二进制文件， 它由FreeBSD上游维护，点击 [这里](https://www.freshports.org/www/minio)查看。
 
 ```sh
 pkg install minio
@@ -89,7 +89,7 @@ service minio start
 
 ## 使用源码安装
 
-采用源码安装仅供开发人员和高级用户使用,如果你还没有Golang环境， 请参考 [How to install Golang](https://golang.org/doc/install)。最低需要Golang版本为 [go1.14](https://golang.org/dl/#stable)
+采用源码安装仅供开发人员和高级用户使用,如果你还没有Golang环境， 请参考 [How to install Golang](https://golang.org/doc/install)。最低需要Golang版本为 [go1.16](https://golang.org/dl/#stable)
 
 ```sh
 GO111MODULE=on go get github.com/minio/minio
@@ -179,7 +179,7 @@ mc admin update <minio alias, e.g., myminio>
 - 对于联盟部署模式，应分别针对每个群集运行`mc admin update`。 在成功更新所有群集之前，不要将`mc`更新为任何新版本。
 - 如果将`kes`用作MinIO的KMS，只需替换二进制文件并重新启动`kes`，可以在 [这里](https://github.com/minio/kes/wiki) 找到有关`kes`的更多信息。
 - 如果将Vault作为MinIO的KMS，请确保已遵循如下Vault升级过程的概述：https://www.vaultproject.io/docs/upgrading/index.html
-- 如果将MindIO与etcd配合使用, 请确保已遵循如下etcd升级过程的概述: https://github.com/etcd-io/etcd/blob/master/Documentation/upgrades/upgrading-etcd.md
+- 如果将MinIO与etcd配合使用, 请确保已遵循如下etcd升级过程的概述: https://github.com/etcd-io/etcd/blob/master/Documentation/upgrades/upgrading-etcd.md
 
 ## 了解更多
 - [MinIO纠删码入门](https://docs.min.io/docs/minio-erasure-code-quickstart-guide)
@@ -190,7 +190,7 @@ mc admin update <minio alias, e.g., myminio>
 - [MinIO文档](https://docs.min.io)
 
 ## 如何参与到MinIO项目
-请参考 [贡献者指南](https://github.com/minio/minio/blob/master/CONTRIBUTING.md)。欢迎各位中国程序员加到MinIO项目中。
+请参考 [贡献者指南](https://github.com/minio/minio/blob/master/CONTRIBUTING.md)。欢迎各位中国程序员加入到MinIO项目中。
 
 ## 授权许可
 MinIO的使用受 Apache 2.0 License 约束，你可以在 [LICENSE](./LICENSE) 查看许可。

browser/.gitignore

@@ -17,4 +17,3 @@ release
 *.syso
 coverage.txt
 node_modules
-production

browser/README.md

@@ -17,24 +17,13 @@ nvm install stable
 npm install
 ```
 
-### Install `go-bindata` and `go-bindata-assetfs`
-
-If you do not have a working Golang environment, please follow [Install Golang](https://golang.org/doc/install)
-
-```sh
-go get github.com/go-bindata/go-bindata/go-bindata
-go get github.com/elazarl/go-bindata-assetfs/go-bindata-assetfs
-```
-
 ## Generating Assets
 
-### Generate ui-assets.go
-
 ```sh
 npm run release
 ```
 
-This generates ui-assets.go in the current directory. Now do `make` in the parent directory to build the minio binary with the newly generated ``ui-assets.go``
+This generates `production` in the current directory. 
 
 
 ## Run MinIO Browser with live reload

browser/app/js/browser/__tests__/ChangePasswordModal.test.js

@@ -24,9 +24,6 @@ jest.mock("jwt-decode")
 jwtDecode.mockImplementation(() => ({ sub: "minio" }))
 
 jest.mock("../../web", () => ({
-  GenerateAuth: jest.fn(() => {
-    return Promise.resolve({ accessKey: "gen1", secretKey: "gen2" })
-  }),
   SetAuth: jest.fn(
     ({ currentAccessKey, currentSecretKey, newAccessKey, newSecretKey }) => {
       if (

browser/assets.go

@@ -0,0 +1,11 @@
+package browser
+
+import "embed"
+
+//go:embed production/*
+var fs embed.FS
+
+// GetStaticAssets returns assets
+func GetStaticAssets() embed.FS {
+	return fs
+}

browser/build.js

@@ -14,19 +14,11 @@
  * limitations under the License.
  */
 
-var moment = require('moment')
 var async = require('async')
 var exec = require('child_process').exec
 var fs = require('fs')
 
 var isProduction = process.env.NODE_ENV == 'production' ? true : false
-var assetsFileName = ''
-var commitId = ''
-var date = moment.utc()
-var version = date.format('YYYY-MM-DDTHH:mm:ss') + 'Z'
-var releaseTag = date.format('YYYY-MM-DDTHH-mm-ss') + 'Z'
-var buildType = 'DEVELOPMENT'
-if (process.env.MINIO_UI_BUILD) buildType = process.env.MINIO_UI_BUILD
 
 rmDir = function(dirPath) {
   try { var files = fs.readdirSync(dirPath); }
@@ -53,74 +45,6 @@ async.waterfall([
       console.log('Running', cmd)
       exec(cmd, cb)
     },
-    function(stdout, stderr, cb) {
-      if (isProduction) {
-        fs.renameSync('production/index_bundle.js',
-                      'production/index_bundle-' + releaseTag + '.js')
-      } else {
-        fs.renameSync('dev/index_bundle.js',
-                      'dev/index_bundle-' + releaseTag + '.js')
-      }
-      var cmd = 'git log --format="%H" -n1'
-      console.log('Running', cmd)
-      exec(cmd, cb)
-    },
-    function(stdout, stderr, cb) {
-      if (!stdout) throw new Error('commitId is empty')
-      commitId = stdout.replace('\n', '')
-      if (commitId.length !== 40) throw new Error('commitId invalid : ' + commitId)
-      assetsFileName = 'ui-assets.go';
-      var cmd = 'go-bindata-assetfs -o bindata_assetfs.go -pkg browser -nocompress=true production/...'
-      if (!isProduction) {
-        cmd = 'go-bindata-assetfs -o bindata_assetfs.go -pkg browser -nocompress=true dev/...'
-      }
-      console.log('Running', cmd)
-      exec(cmd, cb)
-    },
-    function(stdout, stderr, cb) {
-      var cmd = 'gofmt -s -w -l bindata_assetfs.go'
-      console.log('Running', cmd)
-      exec(cmd, cb)
-    },
-    function(stdout, stderr, cb) {
-      fs.renameSync('bindata_assetfs.go', assetsFileName)
-      fs.appendFileSync(assetsFileName, '\n')
-      fs.appendFileSync(assetsFileName, 'var UIReleaseTag = "' + buildType + '.' +
-                        releaseTag + '"\n')
-      fs.appendFileSync(assetsFileName, 'var UICommitID = "' + commitId + '"\n')
-      fs.appendFileSync(assetsFileName, 'var UIVersion = "' + version + '"')
-      fs.appendFileSync(assetsFileName, '\n')
-      var contents;
-      if (isProduction) {
-        contents = fs.readFileSync(assetsFileName, 'utf8')
-                     .replace(/_productionIndexHtml/g, '_productionIndexHTML')
-                     .replace(/productionIndexHtmlBytes/g, 'productionIndexHTMLBytes')
-                     .replace(/productionIndexHtml/g, 'productionIndexHTML')
-                     .replace(/_productionIndex_bundleJs/g, '_productionIndexBundleJs')
-                     .replace(/productionIndex_bundleJsBytes/g, 'productionIndexBundleJsBytes')
-                     .replace(/productionIndex_bundleJs/g, 'productionIndexBundleJs')
-                     .replace(/_productionJqueryUiMinJs/g, '_productionJqueryUIMinJs')
-                     .replace(/productionJqueryUiMinJsBytes/g, 'productionJqueryUIMinJsBytes')
-                     .replace(/productionJqueryUiMinJs/g, 'productionJqueryUIMinJs');
-      } else {
-        contents = fs.readFileSync(assetsFileName, 'utf8')
-                     .replace(/_devIndexHtml/g, '_devIndexHTML')
-                     .replace(/devIndexHtmlBytes/g, 'devIndexHTMLBytes')
-                     .replace(/devIndexHtml/g, 'devIndexHTML')
-                     .replace(/_devIndex_bundleJs/g, '_devIndexBundleJs')
-                     .replace(/devIndex_bundleJsBytes/g, 'devIndexBundleJsBytes')
-                     .replace(/devIndex_bundleJs/g, 'devIndexBundleJs')
-                     .replace(/_devJqueryUiMinJs/g, '_devJqueryUIMinJs')
-                     .replace(/devJqueryUiMinJsBytes/g, 'devJqueryUIMinJsBytes')
-                     .replace(/devJqueryUiMinJs/g, 'devJqueryUIMinJs');
-      }
-      contents = contents.replace(/MINIO_UI_VERSION/g, version)
-      contents = contents.replace(/index_bundle.js/g, 'index_bundle-' + releaseTag + '.js')
-
-      fs.writeFileSync(assetsFileName, contents, 'utf8')
-      console.log('UI assets file :', assetsFileName)
-      cb()
-    }
   ], function(err) {
     if (err) return console.log(err)
   })

browser/package.json

@@ -6,7 +6,7 @@
     "test": "jest",
     "dev": "NODE_ENV=dev webpack-dev-server --devtool cheap-module-eval-source-map --progress --colors --hot --content-base dev",
     "build": "NODE_ENV=dev node build.js",
-    "release": "NODE_ENV=production MINIO_UI_BUILD=RELEASE node build.js",
+    "release": "NODE_ENV=production node build.js",
     "format": "esformatter -i 'app/**/*.js'"
   },
   "jest": {

browser/production/index.html

@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+        <title>MinIO Browser</title>
+
+        <link rel="icon" type="image/png" sizes="32x32" href="/minio/favicon-32x32.png">
+        <link rel="icon" type="image/png" sizes="96x96" href="/minio/favicon-96x96.png">
+        <link rel="icon" type="image/png" sizes="16x16" href="/minio/favicon-16x16.png">
+
+        <link rel="stylesheet" href="/minio/loader.css" type="text/css">
+    </head>
+
+    <body>
+        <div class="page-load">
+            <div class="pl-inner">
+                <img src="/minio/logo.svg" alt="">
+            </div>
+        </div>
+        <div id="root"></div>
+
+        <!--[if lt IE 11]>
+            <div class="ie-warning">
+                <div class="iw-inner">
+                    <i class="iwi-icon fas fa-exclamation-triangle"></i>
+
+                    You are using Internet Explorer version 12.0 or lower. Due to security issues and lack of support for Web Standards it is highly recommended that you upgrade to a modern browser
+
+                    <ul>
+                        <li>
+                            <a href="http://www.google.com/chrome/">
+                                <img src="chrome.png" alt="">
+                                <div>Chrome</div>
+                            </a>
+                        </li>
+                        <li>
+                            <a href="https://www.mozilla.org/en-US/firefox/new/">
+                                <img src="firefox.png" alt="">
+                                <div>Firefox</div>
+                            </a>
+                        </li>
+                        <li>
+                            <a href="https://www.apple.com/safari/">
+                                <img src="safari.png" alt="">
+                                <div>Safari</div>
+                            </a>
+                        </li>
+                    </ul>
+
+                    <div class="iwi-skip">Skip & Continue</div>
+                </div>
+            </div>
+        <![endif]-->
+
+        <script>currentUiVersion = 'MINIO_UI_VERSION'</script>
+        <script src="/minio/index_bundle.js"></script>
+    </body>
+</html>

browser/production/loader.css

@@ -0,0 +1,98 @@
+.page-load {
+    position: fixed;
+    width: 100%;
+    height: 100%;
+    top: 0;
+    left: 0;
+    background: #002a37;
+    z-index: 100;
+    transition: opacity 200ms;
+    -webkit-transition: opacity 200ms;
+}
+
+.pl-0{
+    opacity: 0;
+}
+
+.pl-1 {
+    display: none;
+}
+
+.pl-inner {
+    position: absolute;
+    width: 100px;
+    height: 100px;
+    left: 50%;
+    margin-left: -50px;
+    top: 50%;
+    margin-top: -50px;
+    text-align: center;
+    -webkit-animation: fade-in 500ms;
+    animation: fade-in 500ms;
+    -webkit-animation-fill-mode: both;
+    animation-fill-mode: both;
+    animation-delay: 350ms;
+    -webkit-animation-delay: 350ms;
+    -webkit-backface-visibility: visible;
+    backface-visibility: visible;
+}
+
+.pl-inner:before {
+    content: '';
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    left: 0;
+    top: 0;
+    display: block;
+    -webkit-animation: spin 1000ms infinite linear;
+    animation: spin 1000ms infinite linear;
+    border: 1px solid rgba(255, 255, 255, 0.2);;
+    border-left-color: #fff;
+    border-radius: 50%;
+}
+
+.pl-inner > img {
+    width: 30px;
+    margin-top: 21px;
+}
+
+@-webkit-keyframes fade-in {
+    0% {
+        opacity: 0;
+    }
+    100% {
+        opacity: 1;
+    }
+}
+
+@keyframes fade-in {
+    0% {
+        opacity: 0;
+    }
+    100% {
+        opacity: 1;
+    }
+}
+
+@-webkit-keyframes spin {
+    0% {
+        -webkit-transform: rotate(0deg);
+        transform: rotate(0deg);
+    }
+    100% {
+        -webkit-transform: rotate(360deg);
+        transform: rotate(360deg);
+    }
+}
+
+@keyframes spin {
+    0% {
+        -webkit-transform: rotate(0deg);
+        transform: rotate(0deg);
+    }
+    100% {
+        -webkit-transform: rotate(360deg);
+        transform: rotate(360deg);
+    }
+}

browser/production/logo.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="93px" height="187px" viewBox="0 0 93 187" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <!-- Generator: Sketch 48.2 (47327) - http://www.bohemiancoding.com/sketch -->
+    <title>logo</title>
+    <desc>Created with Sketch.</desc>
+    <defs></defs>
+    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="logo" transform="translate(0.187500, -0.683594)" fill="#FFFFFF" fill-rule="nonzero">
+            <path d="M91.49,46.551 C86.7827023,38.7699609 82.062696,30.9966172 77.33,23.231 C74.87,19.231 72.33,15.231 69.88,11.231 C69.57,10.731 69.18,10.291 68.88,9.831 C64.35,2.931 55.44,-1.679 46.73,2.701 C42.9729806,4.51194908 40.0995718,7.75449451 38.7536428,11.7020516 C37.4077139,15.6496086 37.701799,19.9721186 39.57,23.701 C41.08,26.641 43.57,29.121 45.91,31.581 C53.03,39.141 60.38,46.491 67.45,54.111 C72.4175495,59.4492221 74.4526451,66.8835066 72.8965704,74.0075359 C71.3404956,81.1315653 66.390952,87.0402215 59.65,89.821 C59.4938176,89.83842 59.3361824,89.83842 59.18,89.821 L59.18,54.591 C46.6388051,61.0478363 35.3944735,69.759905 26.01,80.291 C11.32,96.671 2.64,117.141 0.01,132.071 L23.96,119.821 C31.96,115.771 39.86,111.821 48.14,107.581 L48.14,175.921 L59.14,187.131 L59.14,101.831 C59.14,101.831 59.39,101.711 60.22,101.261 C63.5480598,99.6738911 66.7772674,97.8873078 69.89,95.911 C77.7130888,90.4306687 82.7479457,81.8029342 83.6709542,72.295947 C84.5939627,62.7889599 81.3127806,53.3538429 74.69,46.471 C66.49,37.891 58.24,29.351 50.05,20.761 C47.67,18.261 47.72,15.101 50.05,12.881 C52.38,10.661 55.56,10.881 57.96,13.331 L61.38,16.781 C64.1,19.681 66.79,22.611 69.53,25.481 C76.4547149,32.7389629 83.3947303,39.9823123 90.35,47.211 C90.7,47.571 91.12,47.871 91.5,48.211 L91.93,47.951 C91.8351945,47.4695902 91.6876376,47.0000911 91.49,46.551 Z M48.11,94.931 C47.9883217,95.5022568 47.6230065,95.9917791 47.11,96.271 C42.72,98.601 38.29,100.871 33.87,103.141 L17.76,111.401 C24.771203,96.7435071 35.1132853,83.9289138 47.96,73.981 C48.08,74.221 48.16,74.301 48.16,74.381 C48.15,81.231 48.17,88.081 48.11,94.931 Z" id="Shape"></path>
+        </g>
+    </g>
+</svg>

buildscripts/checkdeps.sh

@@ -21,7 +21,7 @@ _init() {
 
     ## Minimum required versions for build dependencies
     GIT_VERSION="1.0"
-    GO_VERSION="1.13"
+    GO_VERSION="1.16"
     OSX_VERSION="10.8"
     KNAME=$(uname -s)
     ARCH=$(uname -m)

buildscripts/cross-compile.sh

@@ -9,7 +9,7 @@ function _init() {
     export CGO_ENABLED=0
 
     ## List of architectures and OS to test coss compilation.
-    SUPPORTED_OSARCH="linux/ppc64le linux/mips64 linux/arm64 linux/s390x darwin/amd64 freebsd/amd64 windows/amd64 linux/arm linux/386 netbsd/amd64"
+    SUPPORTED_OSARCH="linux/ppc64le linux/mips64 linux/arm64 linux/s390x darwin/arm64 darwin/amd64 freebsd/amd64 windows/amd64 linux/arm linux/386 netbsd/amd64"
 }
 
 function _build() {

buildscripts/race.sh

@@ -3,5 +3,5 @@
 set -e
 
 for d in $(go list ./... | grep -v browser); do
-    CGO_ENABLED=1 go test -v -race --timeout 100m "$d"
+    CGO_ENABLED=1 go test -v -tags kqueue -race --timeout 100m "$d"
 done

cmd/acl-handlers.go

@@ -20,7 +20,6 @@ import (
 	"encoding/xml"
 	"io"
 	"net/http"
-	"net/url"
 
 	"github.com/gorilla/mux"
 	xhttp "github.com/minio/minio/cmd/http"
@@ -180,7 +179,7 @@ func (api objectAPIHandlers) PutObjectACLHandler(w http.ResponseWriter, r *http.
 
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
-	object, err := url.PathUnescape(vars["object"])
+	object, err := unescapePath(vars["object"])
 	if err != nil {
 		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
@@ -244,7 +243,7 @@ func (api objectAPIHandlers) GetObjectACLHandler(w http.ResponseWriter, r *http.
 
 	vars := mux.Vars(r)
 	bucket := vars["bucket"]
-	object, err := url.PathUnescape(vars["object"])
+	object, err := unescapePath(vars["object"])
 	if err != nil {
 		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return

cmd/admin-handlers-users.go

@@ -23,8 +23,10 @@ import (
 	"io/ioutil"
 	"net/http"
 	"path"
+	"sort"
 
 	"github.com/gorilla/mux"
+	"github.com/minio/minio/cmd/config/dns"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/auth"
 	iampolicy "github.com/minio/minio/pkg/iam/policy"
@@ -66,7 +68,7 @@ func (a adminAPIHandlers) RemoveUser(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 	accessKey := vars["accessKey"]
 
-	ok, err := globalIAMSys.IsTempUser(accessKey)
+	ok, _, err := globalIAMSys.IsTempUser(accessKey)
 	if err != nil {
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
 		return
@@ -405,6 +407,18 @@ func (a adminAPIHandlers) AddUser(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	if implicitPerm && !globalIAMSys.IsAllowed(iampolicy.Args{
+		AccountName:     accessKey,
+		Action:          iampolicy.CreateUserAdminAction,
+		ConditionValues: getConditionValues(r, "", accessKey, claims),
+		IsOwner:         owner,
+		Claims:          claims,
+		DenyOnly:        true, // check if changing password is explicitly denied.
+	}) {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL)
+		return
+	}
+
 	if r.ContentLength > maxEConfigJSONSize || r.ContentLength == -1 {
 		// More than maxConfigSize bytes were available
 		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminConfigTooLarge), r.URL)
@@ -483,7 +497,7 @@ func (a adminAPIHandlers) AddServiceAccount(w http.ResponseWriter, r *http.Reque
 		parentUser = cred.ParentUser
 	}
 
-	newCred, err := globalIAMSys.NewServiceAccount(ctx, parentUser, createReq.Policy)
+	newCred, err := globalIAMSys.NewServiceAccount(ctx, parentUser, cred.Groups, createReq.Policy)
 	if err != nil {
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
 		return
@@ -688,12 +702,6 @@ func (a adminAPIHandlers) AccountInfoHandler(w http.ResponseWriter, r *http.Requ
 		return rd, wr
 	}
 
-	buckets, err := objectAPI.ListBuckets(ctx)
-	if err != nil {
-		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
-		return
-	}
-
 	// Load the latest calculated data usage
 	dataUsageInfo, err := loadDataUsageFromBackend(ctx, objectAPI)
 	if err != nil {
@@ -701,11 +709,34 @@ func (a adminAPIHandlers) AccountInfoHandler(w http.ResponseWriter, r *http.Requ
 		logger.LogIf(ctx, err)
 	}
 
-	accountName := cred.AccessKey
-	if cred.ParentUser != "" {
-		accountName = cred.ParentUser
+	// If etcd, dns federation configured list buckets from etcd.
+	var buckets []BucketInfo
+	if globalDNSConfig != nil && globalBucketFederation {
+		dnsBuckets, err := globalDNSConfig.List()
+		if err != nil && !IsErrIgnored(err,
+			dns.ErrNoEntriesFound,
+			dns.ErrDomainMissing) {
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+			return
+		}
+		for _, dnsRecords := range dnsBuckets {
+			buckets = append(buckets, BucketInfo{
+				Name:    dnsRecords[0].Key,
+				Created: dnsRecords[0].CreationDate,
+			})
+		}
+		sort.Slice(buckets, func(i, j int) bool {
+			return buckets[i].Name < buckets[j].Name
+		})
+	} else {
+		buckets, err = objectAPI.ListBuckets(ctx)
+		if err != nil {
+			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+			return
+		}
 	}
 
+	accountName := cred.AccessKey
 	policies, err := globalIAMSys.PolicyDBGet(accountName, false)
 	if err != nil {
 		logger.LogIf(ctx, err)
@@ -963,7 +994,7 @@ func (a adminAPIHandlers) SetPolicyForUserOrGroup(w http.ResponseWriter, r *http
 	isGroup := vars["isGroup"] == "true"
 
 	if !isGroup {
-		ok, err := globalIAMSys.IsTempUser(entityName)
+		ok, _, err := globalIAMSys.IsTempUser(entityName)
 		if err != nil && err != errNoSuchUser {
 			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
 			return

cmd/admin-handlers.go

@@ -259,6 +259,7 @@ type ServerHTTPAPIStats struct {
 // ServerHTTPStats holds all type of http operations performed to/from the server
 // including their average execution time.
 type ServerHTTPStats struct {
+	S3RequestsInQueue int32              `json:"s3RequestsInQueue"`
 	CurrentS3Requests ServerHTTPAPIStats `json:"currentS3Requests"`
 	TotalS3Requests   ServerHTTPAPIStats `json:"totalS3Requests"`
 	TotalS3Errors     ServerHTTPAPIStats `json:"totalS3Errors"`
@@ -296,7 +297,7 @@ func (a adminAPIHandlers) StorageInfoHandler(w http.ResponseWriter, r *http.Requ
 	storageInfo, _ := objectAPI.StorageInfo(ctx)
 
 	// Collect any disk healing.
-	healing, _ := getAggregatedBackgroundHealState(ctx)
+	healing, _ := getAggregatedBackgroundHealState(ctx, nil)
 	healDisks := make(map[string]struct{}, len(healing.HealDisks))
 	for _, disk := range healing.HealDisks {
 		healDisks[disk] = struct{}{}
@@ -860,16 +861,14 @@ func (a adminAPIHandlers) HealHandler(w http.ResponseWriter, r *http.Request) {
 	keepConnLive(w, r, respCh)
 }
 
-func getAggregatedBackgroundHealState(ctx context.Context) (madmin.BgHealState, error) {
-	var bgHealStates []madmin.BgHealState
-
-	localHealState, ok := getLocalBackgroundHealStatus()
-	if !ok {
-		return madmin.BgHealState{}, errServerNotInitialized
-	}
-
+// getAggregatedBackgroundHealState returns the heal state of disks.
+// If no ObjectLayer is provided no set status is returned.
+func getAggregatedBackgroundHealState(ctx context.Context, o ObjectLayer) (madmin.BgHealState, error) {
 	// Get local heal status first
-	bgHealStates = append(bgHealStates, localHealState)
+	bgHealStates, ok := getBackgroundHealStatus(ctx, o)
+	if !ok {
+		return bgHealStates, errServerNotInitialized
+	}
 
 	if globalIsDistErasure {
 		// Get heal status from other peers
@@ -884,33 +883,10 @@ func getAggregatedBackgroundHealState(ctx context.Context) (madmin.BgHealState,
 		if errCount == len(nerrs) {
 			return madmin.BgHealState{}, fmt.Errorf("all remote servers failed to report heal status, cluster is unhealthy")
 		}
-		bgHealStates = append(bgHealStates, peersHealStates...)
+		bgHealStates.Merge(peersHealStates...)
 	}
 
-	// Aggregate healing result
-	var aggregatedHealStateResult = madmin.BgHealState{
-		ScannedItemsCount: bgHealStates[0].ScannedItemsCount,
-		LastHealActivity:  bgHealStates[0].LastHealActivity,
-		NextHealRound:     bgHealStates[0].NextHealRound,
-		HealDisks:         bgHealStates[0].HealDisks,
-	}
-
-	bgHealStates = bgHealStates[1:]
-
-	for _, state := range bgHealStates {
-		aggregatedHealStateResult.ScannedItemsCount += state.ScannedItemsCount
-		aggregatedHealStateResult.HealDisks = append(aggregatedHealStateResult.HealDisks, state.HealDisks...)
-		if !state.LastHealActivity.IsZero() && aggregatedHealStateResult.LastHealActivity.Before(state.LastHealActivity) {
-			aggregatedHealStateResult.LastHealActivity = state.LastHealActivity
-			// The node which has the last heal activity means its
-			// is the node that is orchestrating self healing operations,
-			// which also means it is the same node which decides when
-			// the next self healing operation will be done.
-			aggregatedHealStateResult.NextHealRound = state.NextHealRound
-		}
-	}
-
-	return aggregatedHealStateResult, nil
+	return bgHealStates, nil
 }
 
 func (a adminAPIHandlers) BackgroundHealStatusHandler(w http.ResponseWriter, r *http.Request) {
@@ -929,7 +905,7 @@ func (a adminAPIHandlers) BackgroundHealStatusHandler(w http.ResponseWriter, r *
 		return
 	}
 
-	aggregateHealStateResult, err := getAggregatedBackgroundHealState(r.Context())
+	aggregateHealStateResult, err := getAggregatedBackgroundHealState(r.Context(), objectAPI)
 	if err != nil {
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
 		return
@@ -1347,8 +1323,10 @@ func (a adminAPIHandlers) HealthInfoHandler(w http.ResponseWriter, r *http.Reque
 	deadlinedCtx, cancel := context.WithTimeout(ctx, deadline)
 	defer cancel()
 
+	var err error
 	nsLock := objectAPI.NewNSLock(minioMetaBucket, "health-check-in-progress")
-	if err := nsLock.GetLock(ctx, newDynamicTimeout(deadline, deadline)); err != nil { // returns a locked lock
+	ctx, err = nsLock.GetLock(ctx, newDynamicTimeout(deadline, deadline))
+	if err != nil { // returns a locked lock
 		errResp(err)
 		return
 	}
@@ -1544,19 +1522,19 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 		return
 	}
 
-	vault := fetchVaultStatus()
+	kmsStat := fetchKMSStatus()
 
 	ldap := madmin.LDAP{}
 	if globalLDAPConfig.Enabled {
 		ldapConn, err := globalLDAPConfig.Connect()
 		if err != nil {
-			ldap.Status = "offline"
+			ldap.Status = string(madmin.ItemOffline)
 		} else if ldapConn == nil {
 			ldap.Status = "Not Configured"
 		} else {
 			// Close ldap connection to avoid leaks.
 			ldapConn.Close()
-			ldap.Status = "online"
+			ldap.Status = string(madmin.ItemOnline)
 		}
 	}
 
@@ -1565,12 +1543,14 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 	// Get the notification target info
 	notifyTarget := fetchLambdaInfo()
 
-	server := getLocalServerProperty(globalEndpoints, r)
+	local := getLocalServerProperty(globalEndpoints, r)
 	servers := globalNotificationSys.ServerInfo()
-	servers = append(servers, server)
+	servers = append(servers, local)
+
+	assignPoolNumbers(servers)
 
 	var backend interface{}
-	mode := madmin.ObjectLayerInitializing
+	mode := madmin.ItemInitializing
 
 	buckets := madmin.Buckets{}
 	objects := madmin.Objects{}
@@ -1578,18 +1558,22 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 
 	objectAPI := newObjectLayerFn()
 	if objectAPI != nil {
-		mode = madmin.ObjectLayerOnline
+		mode = madmin.ItemOnline
 		// Load data usage
 		dataUsageInfo, err := loadDataUsageFromBackend(ctx, objectAPI)
 		if err == nil {
 			buckets = madmin.Buckets{Count: dataUsageInfo.BucketsCount}
 			objects = madmin.Objects{Count: dataUsageInfo.ObjectsTotalCount}
 			usage = madmin.Usage{Size: dataUsageInfo.ObjectsTotalSize}
+		} else {
+			buckets = madmin.Buckets{Error: err.Error()}
+			objects = madmin.Objects{Error: err.Error()}
+			usage = madmin.Usage{Error: err.Error()}
 		}
 
 		// Fetching the backend information
 		backendInfo := objectAPI.BackendInfo()
-		if backendInfo.Type == BackendType(madmin.Erasure) {
+		if backendInfo.Type == madmin.Erasure {
 			// Calculate the number of online/offline disks of all nodes
 			var allDisks []madmin.Disk
 			for _, s := range servers {
@@ -1613,7 +1597,7 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 
 	domain := globalDomainNames
 	services := madmin.Services{
-		Vault:         vault,
+		KMS:           kmsStat,
 		LDAP:          ldap,
 		Logger:        log,
 		Audit:         audit,
@@ -1621,7 +1605,7 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 	}
 
 	infoMsg := madmin.InfoMessage{
-		Mode:         mode,
+		Mode:         string(mode),
 		Domain:       domain,
 		Region:       globalServerRegion,
 		SQSARN:       globalNotificationSys.GetARNList(false),
@@ -1646,6 +1630,22 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 	writeSuccessResponseJSON(w, jsonBytes)
 }
 
+func assignPoolNumbers(servers []madmin.ServerProperties) {
+	for i := range servers {
+		for idx, ge := range globalEndpoints {
+			for _, endpoint := range ge.Endpoints {
+				if servers[i].Endpoint == endpoint.Host {
+					servers[i].PoolNumber = idx + 1
+				} else if host, err := xnet.ParseHost(servers[i].Endpoint); err == nil {
+					if host.Name == endpoint.Hostname() {
+						servers[i].PoolNumber = idx + 1
+					}
+				}
+			}
+		}
+	}
+}
+
 func fetchLambdaInfo() []map[string][]madmin.TargetIDStatus {
 
 	lambdaMap := make(map[string][]madmin.TargetIDStatus)
@@ -1655,9 +1655,9 @@ func fetchLambdaInfo() []map[string][]madmin.TargetIDStatus {
 		active, _ := tgt.IsActive()
 		targetID := tgt.ID()
 		if active {
-			targetIDStatus[targetID.ID] = madmin.Status{Status: "Online"}
+			targetIDStatus[targetID.ID] = madmin.Status{Status: string(madmin.ItemOnline)}
 		} else {
-			targetIDStatus[targetID.ID] = madmin.Status{Status: "Offline"}
+			targetIDStatus[targetID.ID] = madmin.Status{Status: string(madmin.ItemOffline)}
 		}
 		list := lambdaMap[targetID.Name]
 		list = append(list, targetIDStatus)
@@ -1669,9 +1669,9 @@ func fetchLambdaInfo() []map[string][]madmin.TargetIDStatus {
 		active, _ := tgt.IsActive()
 		targetID := tgt.ID()
 		if active {
-			targetIDStatus[targetID.ID] = madmin.Status{Status: "Online"}
+			targetIDStatus[targetID.ID] = madmin.Status{Status: string(madmin.ItemOnline)}
 		} else {
-			targetIDStatus[targetID.ID] = madmin.Status{Status: "Offline"}
+			targetIDStatus[targetID.ID] = madmin.Status{Status: string(madmin.ItemOffline)}
 		}
 		list := lambdaMap[targetID.Name]
 		list = append(list, targetIDStatus)
@@ -1689,47 +1689,46 @@ func fetchLambdaInfo() []map[string][]madmin.TargetIDStatus {
 	return notify
 }
 
-// fetchVaultStatus fetches Vault Info
-func fetchVaultStatus() madmin.Vault {
-	vault := madmin.Vault{}
+// fetchKMSStatus fetches KMS-related status information.
+func fetchKMSStatus() madmin.KMS {
+	kmsStat := madmin.KMS{}
 	if GlobalKMS == nil {
-		vault.Status = "disabled"
-		return vault
+		kmsStat.Status = "disabled"
+		return kmsStat
 	}
 	keyID := GlobalKMS.DefaultKeyID()
 	kmsInfo := GlobalKMS.Info()
-
 	if len(kmsInfo.Endpoints) == 0 {
-		vault.Status = "KMS configured using master key"
-		return vault
+		kmsStat.Status = "KMS configured using master key"
+		return kmsStat
 	}
 
 	if err := checkConnection(kmsInfo.Endpoints[0], 15*time.Second); err != nil {
-		vault.Status = "offline"
+		kmsStat.Status = string(madmin.ItemOffline)
 	} else {
-		vault.Status = "online"
+		kmsStat.Status = string(madmin.ItemOnline)
 
 		kmsContext := crypto.Context{"MinIO admin API": "ServerInfoHandler"} // Context for a test key operation
 		// 1. Generate a new key using the KMS.
 		key, sealedKey, err := GlobalKMS.GenerateKey(keyID, kmsContext)
 		if err != nil {
-			vault.Encrypt = fmt.Sprintf("Encryption failed: %v", err)
+			kmsStat.Encrypt = fmt.Sprintf("Encryption failed: %v", err)
 		} else {
-			vault.Encrypt = "Ok"
+			kmsStat.Encrypt = "success"
 		}
 
 		// 2. Verify that we can indeed decrypt the (encrypted) key
 		decryptedKey, err := GlobalKMS.UnsealKey(keyID, sealedKey, kmsContext)
 		switch {
 		case err != nil:
-			vault.Decrypt = fmt.Sprintf("Decryption failed: %v", err)
+			kmsStat.Decrypt = fmt.Sprintf("Decryption failed: %v", err)
 		case subtle.ConstantTimeCompare(key[:], decryptedKey[:]) != 1:
-			vault.Decrypt = "Decryption failed: decrypted key does not match generated key"
+			kmsStat.Decrypt = "Decryption failed: decrypted key does not match generated key"
 		default:
-			vault.Decrypt = "Ok"
+			kmsStat.Decrypt = "success"
 		}
 	}
-	return vault
+	return kmsStat
 }
 
 // fetchLoggerDetails return log info
@@ -1742,11 +1741,11 @@ func fetchLoggerInfo() ([]madmin.Logger, []madmin.Audit) {
 			err := checkConnection(target.Endpoint(), 15*time.Second)
 			if err == nil {
 				mapLog := make(map[string]madmin.Status)
-				mapLog[tgt] = madmin.Status{Status: "Online"}
+				mapLog[tgt] = madmin.Status{Status: string(madmin.ItemOnline)}
 				loggerInfo = append(loggerInfo, mapLog)
 			} else {
 				mapLog := make(map[string]madmin.Status)
-				mapLog[tgt] = madmin.Status{Status: "offline"}
+				mapLog[tgt] = madmin.Status{Status: string(madmin.ItemOffline)}
 				loggerInfo = append(loggerInfo, mapLog)
 			}
 		}
@@ -1758,11 +1757,11 @@ func fetchLoggerInfo() ([]madmin.Logger, []madmin.Audit) {
 			err := checkConnection(target.Endpoint(), 15*time.Second)
 			if err == nil {
 				mapAudit := make(map[string]madmin.Status)
-				mapAudit[tgt] = madmin.Status{Status: "Online"}
+				mapAudit[tgt] = madmin.Status{Status: string(madmin.ItemOnline)}
 				auditloggerInfo = append(auditloggerInfo, mapAudit)
 			} else {
 				mapAudit := make(map[string]madmin.Status)
-				mapAudit[tgt] = madmin.Status{Status: "Offline"}
+				mapAudit[tgt] = madmin.Status{Status: string(madmin.ItemOffline)}
 				auditloggerInfo = append(auditloggerInfo, mapAudit)
 			}
 		}

cmd/admin-heal-ops.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"net/http"
 	"sort"
-	"strings"
 	"sync"
 	"time"
 
@@ -90,8 +89,9 @@ type allHealState struct {
 	sync.RWMutex
 
 	// map of heal path to heal sequence
-	healSeqMap     map[string]*healSequence
+	healSeqMap     map[string]*healSequence // Indexed by endpoint
 	healLocalDisks map[Endpoint]struct{}
+	healStatus     map[string]healingTracker // Indexed by disk ID
 }
 
 // newHealState - initialize global heal state management
@@ -99,6 +99,7 @@ func newHealState(cleanup bool) *allHealState {
 	hstate := &allHealState{
 		healSeqMap:     make(map[string]*healSequence),
 		healLocalDisks: map[Endpoint]struct{}{},
+		healStatus:     make(map[string]healingTracker),
 	}
 	if cleanup {
 		go hstate.periodicHealSeqsClean(GlobalContext)
@@ -113,7 +114,56 @@ func (ahs *allHealState) healDriveCount() int {
 	return len(ahs.healLocalDisks)
 }
 
-func (ahs *allHealState) getHealLocalDisks() Endpoints {
+func (ahs *allHealState) popHealLocalDisks(healLocalDisks ...Endpoint) {
+	ahs.Lock()
+	defer ahs.Unlock()
+
+	for _, ep := range healLocalDisks {
+		delete(ahs.healLocalDisks, ep)
+	}
+	for id, disk := range ahs.healStatus {
+		for _, ep := range healLocalDisks {
+			if disk.Endpoint == ep.String() {
+				delete(ahs.healStatus, id)
+			}
+		}
+	}
+}
+
+// updateHealStatus will update the heal status.
+func (ahs *allHealState) updateHealStatus(tracker *healingTracker) {
+	ahs.Lock()
+	defer ahs.Unlock()
+	ahs.healStatus[tracker.ID] = *tracker
+}
+
+// Sort by zone, set and disk index
+func sortDisks(disks []madmin.Disk) {
+	sort.Slice(disks, func(i, j int) bool {
+		a, b := &disks[i], &disks[j]
+		if a.PoolIndex != b.PoolIndex {
+			return a.PoolIndex < b.PoolIndex
+		}
+		if a.SetIndex != b.SetIndex {
+			return a.SetIndex < b.SetIndex
+		}
+		return a.DiskIndex < b.DiskIndex
+	})
+}
+
+// getLocalHealingDisks returns local healing disks indexed by endpoint.
+func (ahs *allHealState) getLocalHealingDisks() map[string]madmin.HealingDisk {
+	ahs.RLock()
+	defer ahs.RUnlock()
+	dst := make(map[string]madmin.HealingDisk, len(ahs.healStatus))
+	for _, v := range ahs.healStatus {
+		dst[v.Endpoint] = v.toHealingDisk()
+	}
+
+	return dst
+}
+
+func (ahs *allHealState) getHealLocalDiskEndpoints() Endpoints {
 	ahs.RLock()
 	defer ahs.RUnlock()
 
@@ -124,15 +174,6 @@ func (ahs *allHealState) getHealLocalDisks() Endpoints {
 	return endpoints
 }
 
-func (ahs *allHealState) popHealLocalDisks(healLocalDisks ...Endpoint) {
-	ahs.Lock()
-	defer ahs.Unlock()
-
-	for _, ep := range healLocalDisks {
-		delete(ahs.healLocalDisks, ep)
-	}
-}
-
 func (ahs *allHealState) pushHealLocalDisks(healLocalDisks ...Endpoint) {
 	ahs.Lock()
 	defer ahs.Unlock()
@@ -662,6 +703,13 @@ func (h *healSequence) healSequenceStart(objAPI ObjectLayer) {
 	}
 }
 
+func (h *healSequence) logHeal(healType madmin.HealItemType) {
+	h.mutex.Lock()
+	h.scannedItemsMap[healType]++
+	h.lastHealActivity = UTCNow()
+	h.mutex.Unlock()
+}
+
 func (h *healSequence) queueHealTask(source healSource, healType madmin.HealItemType) error {
 	globalHealConfigMu.Lock()
 	opts := globalHealConfig
@@ -834,11 +882,6 @@ func (h *healSequence) healMinioSysMeta(objAPI ObjectLayer, metaPrefix string) f
 				return errHealStopSignalled
 			}
 
-			// Skip metacache entries healing
-			if strings.HasPrefix(object, "buckets/.minio.sys/.metacache/") {
-				return nil
-			}
-
 			err := h.queueHealTask(healSource{
 				bucket:    bucket,
 				object:    object,

cmd/admin-router.go

@@ -110,10 +110,9 @@ func registerAdminRouter(router *mux.Router, enableConfigOps, enableIAMOps bool)
 			// -- IAM APIs --
 
 			// Add policy IAM
-			adminRouter.Methods(http.MethodPut).Path(adminVersion+"/add-canned-policy").HandlerFunc(httpTraceHdrs(adminAPI.AddCannedPolicy)).Queries("name", "{name:.*}")
+			adminRouter.Methods(http.MethodPut).Path(adminVersion+"/add-canned-policy").HandlerFunc(httpTraceAll(adminAPI.AddCannedPolicy)).Queries("name", "{name:.*}")
 
 			// Add user IAM
-
 			adminRouter.Methods(http.MethodGet).Path(adminVersion + "/accountinfo").HandlerFunc(httpTraceAll(adminAPI.AccountInfoHandler))
 
 			adminRouter.Methods(http.MethodPut).Path(adminVersion+"/add-user").HandlerFunc(httpTraceHdrs(adminAPI.AddUser)).Queries("accessKey", "{accessKey:.*}")

cmd/admin-server-info.go

@@ -17,9 +17,11 @@
 package cmd
 
 import (
+	"context"
 	"net/http"
 	"time"
 
+	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/madmin"
 )
 
@@ -40,65 +42,38 @@ func getLocalServerProperty(endpointServerPools EndpointServerPools, r *http.Req
 			}
 			if endpoint.IsLocal {
 				// Only proceed for local endpoints
-				network[nodeName] = "online"
+				network[nodeName] = string(madmin.ItemOnline)
 				localEndpoints = append(localEndpoints, endpoint)
 				continue
 			}
 			_, present := network[nodeName]
 			if !present {
-				if err := isServerResolvable(endpoint, time.Second); err == nil {
-					network[nodeName] = "online"
+				if err := isServerResolvable(endpoint, 2*time.Second); err == nil {
+					network[nodeName] = string(madmin.ItemOnline)
 				} else {
-					network[nodeName] = "offline"
+					network[nodeName] = string(madmin.ItemOffline)
+					// log once the error
+					logger.LogOnceIf(context.Background(), err, nodeName)
 				}
 			}
 		}
 	}
 
-	localDisks, _ := initStorageDisksWithErrors(localEndpoints)
-	defer closeStorageDisks(localDisks)
-
-	storageInfo, _ := getStorageInfo(localDisks, localEndpoints.GetAllStrings())
-
-	return madmin.ServerProperties{
-		State:    "ok",
+	props := madmin.ServerProperties{
+		State:    string(madmin.ItemInitializing),
 		Endpoint: addr,
 		Uptime:   UTCNow().Unix() - globalBootTime.Unix(),
 		Version:  Version,
 		CommitID: CommitID,
 		Network:  network,
-		Disks:    storageInfo.Disks,
 	}
-}
 
-func getLocalDisks(endpointServerPools EndpointServerPools) []madmin.Disk {
-	var localEndpoints Endpoints
-	network := make(map[string]string)
-
-	for _, ep := range endpointServerPools {
-		for _, endpoint := range ep.Endpoints {
-			nodeName := endpoint.Host
-			if nodeName == "" {
-				nodeName = "localhost"
-			}
-			if endpoint.IsLocal {
-				// Only proceed for local endpoints
-				network[nodeName] = "online"
-				localEndpoints = append(localEndpoints, endpoint)
-				continue
-			}
-			_, present := network[nodeName]
-			if !present {
-				if err := isServerResolvable(endpoint, time.Second); err == nil {
-					network[nodeName] = "online"
-				} else {
-					network[nodeName] = "offline"
-				}
-			}
-		}
+	objLayer := newObjectLayerFn()
+	if objLayer != nil {
+		storageInfo, _ := objLayer.LocalStorageInfo(GlobalContext)
+		props.State = string(madmin.ItemOnline)
+		props.Disks = storageInfo.Disks
 	}
-	localDisks, _ := initStorageDisksWithErrors(localEndpoints)
-	defer closeStorageDisks(localDisks)
-	storageInfo, _ := getStorageInfo(localDisks, localEndpoints.GetAllStrings())
-	return storageInfo.Disks
+
+	return props
 }

cmd/api-headers.go

@@ -133,18 +133,20 @@ func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, rs *HTTPRangeSp
 		}
 
 		// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
-		if strings.EqualFold(k, xhttp.AmzMetaUnencryptedContentLength) || strings.EqualFold(k, xhttp.AmzMetaUnencryptedContentMD5) {
+		if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
 			continue
 		}
+
 		var isSet bool
 		for _, userMetadataPrefix := range userMetadataKeyPrefixes {
-			if !strings.HasPrefix(k, userMetadataPrefix) {
+			if !strings.HasPrefix(strings.ToLower(k), strings.ToLower(userMetadataPrefix)) {
 				continue
 			}
 			w.Header()[strings.ToLower(k)] = []string{v}
 			isSet = true
 			break
 		}
+
 		if !isSet {
 			w.Header().Set(k, v)
 		}
@@ -177,21 +179,25 @@ func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, rs *HTTPRangeSp
 	if objInfo.VersionID != "" {
 		w.Header()[xhttp.AmzVersionID] = []string{objInfo.VersionID}
 	}
+
 	if objInfo.ReplicationStatus.String() != "" {
 		w.Header()[xhttp.AmzBucketReplicationStatus] = []string{objInfo.ReplicationStatus.String()}
 	}
+
 	if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil {
-		ruleID, expiryTime := lc.PredictExpiryTime(lifecycle.ObjectOpts{
-			Name:         objInfo.Name,
-			UserTags:     objInfo.UserTags,
-			VersionID:    objInfo.VersionID,
-			ModTime:      objInfo.ModTime,
-			IsLatest:     objInfo.IsLatest,
-			DeleteMarker: objInfo.DeleteMarker,
-		})
-		if !expiryTime.IsZero() {
-			w.Header()[xhttp.AmzExpiration] = []string{
-				fmt.Sprintf(`expiry-date="%s", rule-id="%s"`, expiryTime.Format(http.TimeFormat), ruleID),
+		if opts.VersionID == "" {
+			if ruleID, expiryTime := lc.PredictExpiryTime(lifecycle.ObjectOpts{
+				Name:             objInfo.Name,
+				UserTags:         objInfo.UserTags,
+				VersionID:        objInfo.VersionID,
+				ModTime:          objInfo.ModTime,
+				IsLatest:         objInfo.IsLatest,
+				DeleteMarker:     objInfo.DeleteMarker,
+				SuccessorModTime: objInfo.SuccessorModTime,
+			}); !expiryTime.IsZero() {
+				w.Header()[xhttp.AmzExpiration] = []string{
+					fmt.Sprintf(`expiry-date="%s", rule-id="%s"`, expiryTime.Format(http.TimeFormat), ruleID),
+				}
 			}
 		}
 		if objInfo.TransitionStatus == lifecycle.TransitionComplete {

cmd/api-resources.go

@@ -36,8 +36,19 @@ func getListObjectsV1Args(values url.Values) (prefix, marker, delimiter string,
 		maxkeys = maxObjectList
 	}
 
-	prefix = values.Get("prefix")
-	marker = values.Get("marker")
+	var err error
+	prefix, err = unescapePath(values.Get("prefix"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
+	marker, err = unescapePath(values.Get("marker"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
 	delimiter = values.Get("delimiter")
 	encodingType = values.Get("encoding-type")
 	return
@@ -56,8 +67,19 @@ func getListBucketObjectVersionsArgs(values url.Values) (prefix, marker, delimit
 		maxkeys = maxObjectList
 	}
 
-	prefix = values.Get("prefix")
-	marker = values.Get("key-marker")
+	var err error
+	prefix, err = unescapePath(values.Get("prefix"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
+	marker, err = unescapePath(values.Get("key-marker"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
 	delimiter = values.Get("delimiter")
 	encodingType = values.Get("encoding-type")
 	versionIDMarker = values.Get("version-id-marker")
@@ -86,8 +108,19 @@ func getListObjectsV2Args(values url.Values) (prefix, token, startAfter, delimit
 		maxkeys = maxObjectList
 	}
 
-	prefix = values.Get("prefix")
-	startAfter = values.Get("start-after")
+	var err error
+	prefix, err = unescapePath(values.Get("prefix"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
+	startAfter, err = unescapePath(values.Get("start-after"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
 	delimiter = values.Get("delimiter")
 	fetchOwner = values.Get("fetch-owner") == "true"
 	encodingType = values.Get("encoding-type")
@@ -117,8 +150,19 @@ func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadID
 		maxUploads = maxUploadsList
 	}
 
-	prefix = values.Get("prefix")
-	keyMarker = values.Get("key-marker")
+	var err error
+	prefix, err = unescapePath(values.Get("prefix"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
+	keyMarker, err = unescapePath(values.Get("key-marker"))
+	if err != nil {
+		errCode = ErrInvalidRequest
+		return
+	}
+
 	uploadIDMarker = values.Get("upload-id-marker")
 	delimiter = values.Get("delimiter")
 	encodingType = values.Get("encoding-type")

cmd/api-response.go

@@ -48,6 +48,12 @@ type LocationResponse struct {
 	Location string   `xml:",chardata"`
 }
 
+// PolicyStatus captures information returned by GetBucketPolicyStatusHandler
+type PolicyStatus struct {
+	XMLName  xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ PolicyStatus" json:"-"`
+	IsPublic string
+}
+
 // ListVersionsResponse - format for list bucket versions response.
 type ListVersionsResponse struct {
 	XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListVersionsResult" json:"-"`
@@ -410,9 +416,11 @@ func getObjectLocation(r *http.Request, domains []string, bucket, object string)
 func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
 	listbuckets := make([]Bucket, 0, len(buckets))
 	var data = ListBucketsResponse{}
-	var owner = Owner{}
+	var owner = Owner{
+		ID:          globalMinioDefaultOwnerID,
+		DisplayName: "minio",
+	}
 
-	owner.ID = globalMinioDefaultOwnerID
 	for _, bucket := range buckets {
 		var listbucket = Bucket{}
 		listbucket.Name = bucket.Name
@@ -429,10 +437,12 @@ func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
 // generates an ListBucketVersions response for the said bucket with other enumerated options.
 func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delimiter, encodingType string, maxKeys int, resp ListObjectVersionsInfo) ListVersionsResponse {
 	versions := make([]ObjectVersion, 0, len(resp.Objects))
-	var owner = Owner{}
+	var owner = Owner{
+		ID:          globalMinioDefaultOwnerID,
+		DisplayName: "minio",
+	}
 	var data = ListVersionsResponse{}
 
-	owner.ID = globalMinioDefaultOwnerID
 	for _, object := range resp.Objects {
 		var content = ObjectVersion{}
 		if object.Name == "" {
@@ -485,10 +495,12 @@ func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delim
 // generates an ListObjectsV1 response for the said bucket with other enumerated options.
 func generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingType string, maxKeys int, resp ListObjectsInfo) ListObjectsResponse {
 	contents := make([]Object, 0, len(resp.Objects))
-	var owner = Owner{}
+	var owner = Owner{
+		ID:          globalMinioDefaultOwnerID,
+		DisplayName: "minio",
+	}
 	var data = ListObjectsResponse{}
 
-	owner.ID = globalMinioDefaultOwnerID
 	for _, object := range resp.Objects {
 		var content = Object{}
 		if object.Name == "" {
@@ -532,12 +544,11 @@ func generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingTy
 // generates an ListObjectsV2 response for the said bucket with other enumerated options.
 func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter, delimiter, encodingType string, fetchOwner, isTruncated bool, maxKeys int, objects []ObjectInfo, prefixes []string, metadata bool) ListObjectsV2Response {
 	contents := make([]Object, 0, len(objects))
-	var owner = Owner{}
-	var data = ListObjectsV2Response{}
-
-	if fetchOwner {
-		owner.ID = globalMinioDefaultOwnerID
+	var owner = Owner{
+		ID:          globalMinioDefaultOwnerID,
+		DisplayName: "minio",
 	}
+	var data = ListObjectsV2Response{}
 
 	for _, object := range objects {
 		var content = Object{}
@@ -565,7 +576,7 @@ func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter,
 					continue
 				}
 				// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
-				if strings.EqualFold(k, xhttp.AmzMetaUnencryptedContentLength) || strings.EqualFold(k, xhttp.AmzMetaUnencryptedContentMD5) {
+				if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
 					continue
 				}
 				content.UserMetadata[k] = v
@@ -639,8 +650,16 @@ func generateListPartsResponse(partsInfo ListPartsInfo, encodingType string) Lis
 	listPartsResponse.Key = s3EncodeName(partsInfo.Object, encodingType)
 	listPartsResponse.UploadID = partsInfo.UploadID
 	listPartsResponse.StorageClass = globalMinioDefaultStorageClass
-	listPartsResponse.Initiator.ID = globalMinioDefaultOwnerID
-	listPartsResponse.Owner.ID = globalMinioDefaultOwnerID
+
+	// Dumb values not meaningful
+	listPartsResponse.Initiator = Initiator{
+		ID:          globalMinioDefaultOwnerID,
+		DisplayName: globalMinioDefaultOwnerID,
+	}
+	listPartsResponse.Owner = Owner{
+		ID:          globalMinioDefaultOwnerID,
+		DisplayName: globalMinioDefaultOwnerID,
+	}
 
 	listPartsResponse.MaxParts = partsInfo.MaxParts
 	listPartsResponse.PartNumberMarker = partsInfo.PartNumberMarker

cmd/api-router.go

@@ -185,6 +185,10 @@ func registerAPIRouter(router *mux.Router) {
 		bucket.Methods(http.MethodDelete).Path("/{object:.+}").HandlerFunc(
 			collectAPIStats("deleteobject", maxClients(httpTraceAll(api.DeleteObjectHandler))))
 
+		// PostRestoreObject
+		bucket.Methods(http.MethodPost).Path("/{object:.+}").HandlerFunc(
+			collectAPIStats("restoreobject", maxClients(httpTraceAll(api.PostRestoreObjectHandler)))).Queries("restore", "")
+
 		/// Bucket operations
 		// GetBucketLocation
 		bucket.Methods(http.MethodGet).HandlerFunc(
@@ -262,9 +266,9 @@ func registerAPIRouter(router *mux.Router) {
 		// ListObjectVersions
 		bucket.Methods(http.MethodGet).HandlerFunc(
 			collectAPIStats("listobjectversions", maxClients(httpTraceAll(api.ListObjectVersionsHandler)))).Queries("versions", "")
-		// ListObjectsV1 (Legacy)
+		// GetBucketPolicyStatus
 		bucket.Methods(http.MethodGet).HandlerFunc(
-			collectAPIStats("listobjectsv1", maxClients(httpTraceAll(api.ListObjectsV1Handler))))
+			collectAPIStats("getpolicystatus", maxClients(httpTraceAll(api.GetBucketPolicyStatusHandler)))).Queries("policyStatus", "")
 		// PutBucketLifecycle
 		bucket.Methods(http.MethodPut).HandlerFunc(
 			collectAPIStats("putbucketlifecycle", maxClients(httpTraceAll(api.PutBucketLifecycleHandler)))).Queries("lifecycle", "")
@@ -320,9 +324,9 @@ func registerAPIRouter(router *mux.Router) {
 		// DeleteBucket
 		bucket.Methods(http.MethodDelete).HandlerFunc(
 			collectAPIStats("deletebucket", maxClients(httpTraceAll(api.DeleteBucketHandler))))
-		// PostRestoreObject
-		bucket.Methods(http.MethodPost).Path("/{object:.+}").HandlerFunc(
-			collectAPIStats("restoreobject", maxClients(httpTraceAll(api.PostRestoreObjectHandler)))).Queries("restore", "")
+		// ListObjectsV1 (Legacy)
+		bucket.Methods(http.MethodGet).HandlerFunc(
+			collectAPIStats("listobjectsv1", maxClients(httpTraceAll(api.ListObjectsV1Handler))))
 	}
 
 	/// Root operation

cmd/auth-handler.go

@@ -36,6 +36,7 @@ import (
 	"github.com/minio/minio/pkg/auth"
 	objectlock "github.com/minio/minio/pkg/bucket/object/lock"
 	"github.com/minio/minio/pkg/bucket/policy"
+	"github.com/minio/minio/pkg/etag"
 	"github.com/minio/minio/pkg/hash"
 	iampolicy "github.com/minio/minio/pkg/iam/policy"
 )
@@ -185,12 +186,12 @@ func getSessionToken(r *http.Request) (token string) {
 // Fetch claims in the security token returned by the client, doesn't return
 // errors - upon errors the returned claims map will be empty.
 func mustGetClaimsFromToken(r *http.Request) map[string]interface{} {
-	claims, _ := getClaimsFromToken(r, getSessionToken(r))
+	claims, _ := getClaimsFromToken(getSessionToken(r))
 	return claims
 }
 
 // Fetch claims in the security token returned by the client.
-func getClaimsFromToken(r *http.Request, token string) (map[string]interface{}, error) {
+func getClaimsFromToken(token string) (map[string]interface{}, error) {
 	claims := xjwt.NewMapClaims()
 	if token == "" {
 		return claims.Map(), nil
@@ -237,7 +238,7 @@ func getClaimsFromToken(r *http.Request, token string) (map[string]interface{},
 		if err != nil {
 			// Base64 decoding fails, we should log to indicate
 			// something is malforming the request sent by client.
-			logger.LogIf(r.Context(), err, logger.Application)
+			logger.LogIf(GlobalContext, err, logger.Application)
 			return nil, errAuthentication
 		}
 		claims.MapClaims[iampolicy.SessionPolicyName] = string(spBytes)
@@ -258,7 +259,7 @@ func checkClaimsFromToken(r *http.Request, cred auth.Credentials) (map[string]in
 	if subtle.ConstantTimeCompare([]byte(token), []byte(cred.SessionToken)) != 1 {
 		return nil, ErrInvalidToken
 	}
-	claims, err := getClaimsFromToken(r, token)
+	claims, err := getClaimsFromToken(token)
 	if err != nil {
 		return nil, toAPIErrorCode(r.Context(), err)
 	}
@@ -430,19 +431,14 @@ func isReqAuthenticated(ctx context.Context, r *http.Request, region string, sty
 		return errCode
 	}
 
-	var (
-		err                       error
-		contentMD5, contentSHA256 []byte
-	)
-
-	// Extract 'Content-Md5' if present.
-	contentMD5, err = checkValidMD5(r.Header)
+	clientETag, err := etag.FromContentMD5(r.Header)
 	if err != nil {
 		return ErrInvalidDigest
 	}
 
 	// Extract either 'X-Amz-Content-Sha256' header or 'X-Amz-Content-Sha256' query parameter (if V4 presigned)
 	// Do not verify 'X-Amz-Content-Sha256' if skipSHA256.
+	var contentSHA256 []byte
 	if skipSHA256 := skipContentSha256Cksum(r); !skipSHA256 && isRequestPresignedSignatureV4(r) {
 		if sha256Sum, ok := r.URL.Query()[xhttp.AmzContentSha256]; ok && len(sha256Sum) > 0 {
 			contentSHA256, err = hex.DecodeString(sha256Sum[0])
@@ -459,8 +455,7 @@ func isReqAuthenticated(ctx context.Context, r *http.Request, region string, sty
 
 	// Verify 'Content-Md5' and/or 'X-Amz-Content-Sha256' if present.
 	// The verification happens implicit during reading.
-	reader, err := hash.NewReader(r.Body, -1, hex.EncodeToString(contentMD5),
-		hex.EncodeToString(contentSHA256), -1, globalCLIContext.StrictS3Compat)
+	reader, err := hash.NewReader(r.Body, -1, clientETag.String(), hex.EncodeToString(contentSHA256), -1)
 	if err != nil {
 		return toAPIErrorCode(ctx, err)
 	}
@@ -498,6 +493,7 @@ func setAuthHandler(h http.Handler) http.Handler {
 			// Validate Authorization header if its valid for JWT request.
 			if _, _, authErr := webRequestAuthenticate(r); authErr != nil {
 				w.WriteHeader(http.StatusUnauthorized)
+				w.Write([]byte(authErr.Error()))
 				return
 			}
 			h.ServeHTTP(w, r)

cmd/background-newdisks-heal-ops.go

@@ -17,16 +17,23 @@
 package cmd
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
 	"sort"
+	"strings"
+	"sync"
 	"time"
 
 	"github.com/dustin/go-humanize"
+	"github.com/minio/minio-go/v7/pkg/set"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/color"
 	"github.com/minio/minio/pkg/console"
+	"github.com/minio/minio/pkg/madmin"
 )
 
 const (
@@ -35,10 +42,200 @@ const (
 )
 
 //go:generate msgp -file $GOFILE -unexported
-type healingTracker struct {
-	ID string
 
-	// future add more tracking capabilities
+// healingTracker is used to persist healing information during a heal.
+type healingTracker struct {
+	disk StorageAPI `msg:"-"`
+
+	ID            string
+	PoolIndex     int
+	SetIndex      int
+	DiskIndex     int
+	Path          string
+	Endpoint      string
+	Started       time.Time
+	LastUpdate    time.Time
+	ObjectsHealed uint64
+	ObjectsFailed uint64
+	BytesDone     uint64
+	BytesFailed   uint64
+
+	// Last object scanned.
+	Bucket string `json:"-"`
+	Object string `json:"-"`
+
+	// Numbers when current bucket started healing,
+	// for resuming with correct numbers.
+	ResumeObjectsHealed uint64 `json:"-"`
+	ResumeObjectsFailed uint64 `json:"-"`
+	ResumeBytesDone     uint64 `json:"-"`
+	ResumeBytesFailed   uint64 `json:"-"`
+
+	// Filled on startup/restarts.
+	QueuedBuckets []string
+
+	// Filled during heal.
+	HealedBuckets []string
+	// Add future tracking capabilities
+	// Be sure that they are included in toHealingDisk
+}
+
+// loadHealingTracker will load the healing tracker from the supplied disk.
+// The disk ID will be validated against the loaded one.
+func loadHealingTracker(ctx context.Context, disk StorageAPI) (*healingTracker, error) {
+	if disk == nil {
+		return nil, errors.New("loadHealingTracker: nil disk given")
+	}
+	diskID, err := disk.GetDiskID()
+	if err != nil {
+		return nil, err
+	}
+	b, err := disk.ReadAll(ctx, minioMetaBucket,
+		pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename))
+	if err != nil {
+		return nil, err
+	}
+	var h healingTracker
+	_, err = h.UnmarshalMsg(b)
+	if err != nil {
+		return nil, err
+	}
+	if h.ID != diskID && h.ID != "" {
+		return nil, fmt.Errorf("loadHealingTracker: disk id mismatch expected %s, got %s", h.ID, diskID)
+	}
+	h.disk = disk
+	h.ID = diskID
+	return &h, nil
+}
+
+// newHealingTracker will create a new healing tracker for the disk.
+func newHealingTracker(disk StorageAPI) *healingTracker {
+	diskID, _ := disk.GetDiskID()
+	h := healingTracker{
+		disk:     disk,
+		ID:       diskID,
+		Path:     disk.String(),
+		Endpoint: disk.Endpoint().String(),
+		Started:  time.Now().UTC(),
+	}
+	h.PoolIndex, h.SetIndex, h.DiskIndex = disk.GetDiskLoc()
+	return &h
+}
+
+// update will update the tracker on the disk.
+// If the tracker has been deleted an error is returned.
+func (h *healingTracker) update(ctx context.Context) error {
+	if h.disk.Healing() == nil {
+		return fmt.Errorf("healingTracker: disk %q is not marked as healing", h.ID)
+	}
+	if h.ID == "" || h.PoolIndex < 0 || h.SetIndex < 0 || h.DiskIndex < 0 {
+		h.ID, _ = h.disk.GetDiskID()
+		h.PoolIndex, h.SetIndex, h.DiskIndex = h.disk.GetDiskLoc()
+	}
+	return h.save(ctx)
+}
+
+// save will unconditionally save the tracker and will be created if not existing.
+func (h *healingTracker) save(ctx context.Context) error {
+	if h.PoolIndex < 0 || h.SetIndex < 0 || h.DiskIndex < 0 {
+		// Attempt to get location.
+		if api := newObjectLayerFn(); api != nil {
+			if ep, ok := api.(*erasureServerPools); ok {
+				h.PoolIndex, h.SetIndex, h.DiskIndex, _ = ep.getPoolAndSet(h.ID)
+			}
+		}
+	}
+	h.LastUpdate = time.Now().UTC()
+	htrackerBytes, err := h.MarshalMsg(nil)
+	if err != nil {
+		return err
+	}
+	globalBackgroundHealState.updateHealStatus(h)
+	return h.disk.WriteAll(ctx, minioMetaBucket,
+		pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename),
+		htrackerBytes)
+}
+
+// delete the tracker on disk.
+func (h *healingTracker) delete(ctx context.Context) error {
+	return h.disk.Delete(ctx, minioMetaBucket,
+		pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename),
+		false)
+}
+
+func (h *healingTracker) isHealed(bucket string) bool {
+	for _, v := range h.HealedBuckets {
+		if v == bucket {
+			return true
+		}
+	}
+	return false
+}
+
+// resume will reset progress to the numbers at the start of the bucket.
+func (h *healingTracker) resume() {
+	h.ObjectsHealed = h.ResumeObjectsHealed
+	h.ObjectsFailed = h.ResumeObjectsFailed
+	h.BytesDone = h.ResumeBytesDone
+	h.BytesFailed = h.ResumeBytesFailed
+}
+
+// bucketDone should be called when a bucket is done healing.
+// Adds the bucket to the list of healed buckets and updates resume numbers.
+func (h *healingTracker) bucketDone(bucket string) {
+	h.ResumeObjectsHealed = h.ObjectsHealed
+	h.ResumeObjectsFailed = h.ObjectsFailed
+	h.ResumeBytesDone = h.BytesDone
+	h.ResumeBytesFailed = h.BytesFailed
+	h.HealedBuckets = append(h.HealedBuckets, bucket)
+	for i, b := range h.QueuedBuckets {
+		if b == bucket {
+			// Delete...
+			h.QueuedBuckets = append(h.QueuedBuckets[:i], h.QueuedBuckets[i+1:]...)
+		}
+	}
+}
+
+// setQueuedBuckets will add buckets, but exclude any that is already in h.HealedBuckets.
+// Order is preserved.
+func (h *healingTracker) setQueuedBuckets(buckets []BucketInfo) {
+	s := set.CreateStringSet(h.HealedBuckets...)
+	h.QueuedBuckets = make([]string, 0, len(buckets))
+	for _, b := range buckets {
+		if !s.Contains(b.Name) {
+			h.QueuedBuckets = append(h.QueuedBuckets, b.Name)
+		}
+	}
+}
+
+func (h *healingTracker) printTo(writer io.Writer) {
+	b, err := json.MarshalIndent(h, "", "  ")
+	if err != nil {
+		writer.Write([]byte(err.Error()))
+	}
+	writer.Write(b)
+}
+
+// toHealingDisk converts the information to madmin.HealingDisk
+func (h *healingTracker) toHealingDisk() madmin.HealingDisk {
+	return madmin.HealingDisk{
+		ID:            h.ID,
+		Endpoint:      h.Endpoint,
+		PoolIndex:     h.PoolIndex,
+		SetIndex:      h.SetIndex,
+		DiskIndex:     h.DiskIndex,
+		Path:          h.Path,
+		Started:       h.Started.UTC(),
+		LastUpdate:    h.LastUpdate.UTC(),
+		ObjectsHealed: h.ObjectsHealed,
+		ObjectsFailed: h.ObjectsFailed,
+		BytesDone:     h.BytesDone,
+		BytesFailed:   h.BytesFailed,
+		Bucket:        h.Bucket,
+		Object:        h.Object,
+		QueuedBuckets: h.QueuedBuckets,
+		HealedBuckets: h.HealedBuckets,
+	}
 }
 
 func initAutoHeal(ctx context.Context, objAPI ObjectLayer) {
@@ -90,7 +287,7 @@ func getLocalDisksToHeal() (disksToHeal Endpoints) {
 			disk, _, err := connectEndpoint(endpoint)
 			if errors.Is(err, errUnformattedDisk) {
 				disksToHeal = append(disksToHeal, endpoint)
-			} else if err == nil && disk != nil && disk.Healing() {
+			} else if err == nil && disk != nil && disk.Healing() != nil {
 				disksToHeal = append(disksToHeal, disk.Endpoint())
 			}
 		}
@@ -114,7 +311,7 @@ func monitorLocalDisksAndHeal(ctx context.Context, z *erasureServerPools, bgSeq
 	// Perform automatic disk healing when a disk is replaced locally.
 	diskCheckTimer := time.NewTimer(defaultMonitorNewDiskInterval)
 	defer diskCheckTimer.Stop()
-wait:
+
 	for {
 		select {
 		case <-ctx.Done():
@@ -125,7 +322,7 @@ wait:
 
 			var erasureSetInPoolDisksToHeal []map[int][]StorageAPI
 
-			healDisks := globalBackgroundHealState.getHealLocalDisks()
+			healDisks := globalBackgroundHealState.getHealLocalDiskEndpoints()
 			if len(healDisks) > 0 {
 				// Reformat disks
 				bgSeq.sourceCh <- healSource{bucket: SlashSeparator}
@@ -174,55 +371,76 @@ wait:
 
 			buckets, _ := z.ListBuckets(ctx)
 
+			buckets = append(buckets, BucketInfo{
+				Name: pathJoin(minioMetaBucket, minioConfigPrefix),
+			})
+
+			// Buckets data are dispersed in multiple zones/sets, make
+			// sure to heal all bucket metadata configuration.
+			buckets = append(buckets, []BucketInfo{
+				{Name: pathJoin(minioMetaBucket, bucketMetaPrefix)},
+			}...)
+
 			// Heal latest buckets first.
 			sort.Slice(buckets, func(i, j int) bool {
+				a, b := strings.HasPrefix(buckets[i].Name, minioMetaBucket), strings.HasPrefix(buckets[j].Name, minioMetaBucket)
+				if a != b {
+					return a
+				}
 				return buckets[i].Created.After(buckets[j].Created)
 			})
 
+			// TODO(klauspost): This will block until all heals are done,
+			// in the future this should be able to start healing other sets at once.
+			var wg sync.WaitGroup
 			for i, setMap := range erasureSetInPoolDisksToHeal {
+				i := i
 				for setIndex, disks := range setMap {
-					for _, disk := range disks {
-						logger.Info("Healing disk '%s' on %s pool", disk, humanize.Ordinal(i+1))
+					if len(disks) == 0 {
+						continue
+					}
+					wg.Add(1)
+					go func(setIndex int, disks []StorageAPI) {
+						defer wg.Done()
+						for _, disk := range disks {
+							logger.Info("Healing disk '%v' on %s pool", disk, humanize.Ordinal(i+1))
 
-						// So someone changed the drives underneath, healing tracker missing.
-						if !disk.Healing() {
-							logger.Info("Healing tracker missing on '%s', disk was swapped again on %s pool", disk, humanize.Ordinal(i+1))
-							diskID, err := disk.GetDiskID()
+							// So someone changed the drives underneath, healing tracker missing.
+							tracker, err := loadHealingTracker(ctx, disk)
 							if err != nil {
-								logger.LogIf(ctx, err)
-								// reading format.json failed or not found, proceed to look
-								// for new disks to be healed again, we cannot proceed further.
-								goto wait
+								logger.Info("Healing tracker missing on '%s', disk was swapped again on %s pool", disk, humanize.Ordinal(i+1))
+								tracker = newHealingTracker(disk)
 							}
 
-							if err := saveHealingTracker(disk, diskID); err != nil {
+							tracker.PoolIndex, tracker.SetIndex, tracker.DiskIndex = disk.GetDiskLoc()
+							tracker.setQueuedBuckets(buckets)
+							if err := tracker.save(ctx); err != nil {
 								logger.LogIf(ctx, err)
 								// Unable to write healing tracker, permission denied or some
 								// other unexpected error occurred. Proceed to look for new
 								// disks to be healed again, we cannot proceed further.
-								goto wait
+								return
 							}
+
+							err = z.serverPools[i].sets[setIndex].healErasureSet(ctx, buckets, tracker)
+							if err != nil {
+								logger.LogIf(ctx, err)
+								continue
+							}
+
+							logger.Info("Healing disk '%s' on %s pool complete", disk, humanize.Ordinal(i+1))
+							var buf bytes.Buffer
+							tracker.printTo(&buf)
+							logger.Info("Summary:\n%s", buf.String())
+							logger.LogIf(ctx, tracker.delete(ctx))
+
+							// Only upon success pop the healed disk.
+							globalBackgroundHealState.popHealLocalDisks(disk.Endpoint())
 						}
-
-						lbDisks := z.serverPools[i].sets[setIndex].getOnlineDisks()
-						if err := healErasureSet(ctx, setIndex, buckets, lbDisks); err != nil {
-							logger.LogIf(ctx, err)
-							continue
-						}
-
-						logger.Info("Healing disk '%s' on %s pool complete", disk, humanize.Ordinal(i+1))
-
-						if err := disk.Delete(ctx, pathJoin(minioMetaBucket, bucketMetaPrefix),
-							healingTrackerFilename, false); err != nil && !errors.Is(err, errFileNotFound) {
-							logger.LogIf(ctx, err)
-							continue
-						}
-
-						// Only upon success pop the healed disk.
-						globalBackgroundHealState.popHealLocalDisks(disk.Endpoint())
-					}
+					}(setIndex, disks)
 				}
 			}
+			wg.Wait()
 		}
 	}
 }

cmd/background-newdisks-heal-ops_gen.go

@@ -30,6 +30,146 @@ func (z *healingTracker) DecodeMsg(dc *msgp.Reader) (err error) {
 				err = msgp.WrapError(err, "ID")
 				return
 			}
+		case "PoolIndex":
+			z.PoolIndex, err = dc.ReadInt()
+			if err != nil {
+				err = msgp.WrapError(err, "PoolIndex")
+				return
+			}
+		case "SetIndex":
+			z.SetIndex, err = dc.ReadInt()
+			if err != nil {
+				err = msgp.WrapError(err, "SetIndex")
+				return
+			}
+		case "DiskIndex":
+			z.DiskIndex, err = dc.ReadInt()
+			if err != nil {
+				err = msgp.WrapError(err, "DiskIndex")
+				return
+			}
+		case "Path":
+			z.Path, err = dc.ReadString()
+			if err != nil {
+				err = msgp.WrapError(err, "Path")
+				return
+			}
+		case "Endpoint":
+			z.Endpoint, err = dc.ReadString()
+			if err != nil {
+				err = msgp.WrapError(err, "Endpoint")
+				return
+			}
+		case "Started":
+			z.Started, err = dc.ReadTime()
+			if err != nil {
+				err = msgp.WrapError(err, "Started")
+				return
+			}
+		case "LastUpdate":
+			z.LastUpdate, err = dc.ReadTime()
+			if err != nil {
+				err = msgp.WrapError(err, "LastUpdate")
+				return
+			}
+		case "ObjectsHealed":
+			z.ObjectsHealed, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "ObjectsHealed")
+				return
+			}
+		case "ObjectsFailed":
+			z.ObjectsFailed, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "ObjectsFailed")
+				return
+			}
+		case "BytesDone":
+			z.BytesDone, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "BytesDone")
+				return
+			}
+		case "BytesFailed":
+			z.BytesFailed, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "BytesFailed")
+				return
+			}
+		case "Bucket":
+			z.Bucket, err = dc.ReadString()
+			if err != nil {
+				err = msgp.WrapError(err, "Bucket")
+				return
+			}
+		case "Object":
+			z.Object, err = dc.ReadString()
+			if err != nil {
+				err = msgp.WrapError(err, "Object")
+				return
+			}
+		case "ResumeObjectsHealed":
+			z.ResumeObjectsHealed, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeObjectsHealed")
+				return
+			}
+		case "ResumeObjectsFailed":
+			z.ResumeObjectsFailed, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeObjectsFailed")
+				return
+			}
+		case "ResumeBytesDone":
+			z.ResumeBytesDone, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeBytesDone")
+				return
+			}
+		case "ResumeBytesFailed":
+			z.ResumeBytesFailed, err = dc.ReadUint64()
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeBytesFailed")
+				return
+			}
+		case "QueuedBuckets":
+			var zb0002 uint32
+			zb0002, err = dc.ReadArrayHeader()
+			if err != nil {
+				err = msgp.WrapError(err, "QueuedBuckets")
+				return
+			}
+			if cap(z.QueuedBuckets) >= int(zb0002) {
+				z.QueuedBuckets = (z.QueuedBuckets)[:zb0002]
+			} else {
+				z.QueuedBuckets = make([]string, zb0002)
+			}
+			for za0001 := range z.QueuedBuckets {
+				z.QueuedBuckets[za0001], err = dc.ReadString()
+				if err != nil {
+					err = msgp.WrapError(err, "QueuedBuckets", za0001)
+					return
+				}
+			}
+		case "HealedBuckets":
+			var zb0003 uint32
+			zb0003, err = dc.ReadArrayHeader()
+			if err != nil {
+				err = msgp.WrapError(err, "HealedBuckets")
+				return
+			}
+			if cap(z.HealedBuckets) >= int(zb0003) {
+				z.HealedBuckets = (z.HealedBuckets)[:zb0003]
+			} else {
+				z.HealedBuckets = make([]string, zb0003)
+			}
+			for za0002 := range z.HealedBuckets {
+				z.HealedBuckets[za0002], err = dc.ReadString()
+				if err != nil {
+					err = msgp.WrapError(err, "HealedBuckets", za0002)
+					return
+				}
+			}
 		default:
 			err = dc.Skip()
 			if err != nil {
@@ -42,10 +182,10 @@ func (z *healingTracker) DecodeMsg(dc *msgp.Reader) (err error) {
 }
 
 // EncodeMsg implements msgp.Encodable
-func (z healingTracker) EncodeMsg(en *msgp.Writer) (err error) {
-	// map header, size 1
+func (z *healingTracker) EncodeMsg(en *msgp.Writer) (err error) {
+	// map header, size 20
 	// write "ID"
-	err = en.Append(0x81, 0xa2, 0x49, 0x44)
+	err = en.Append(0xde, 0x0, 0x14, 0xa2, 0x49, 0x44)
 	if err != nil {
 		return
 	}
@@ -54,16 +194,283 @@ func (z healingTracker) EncodeMsg(en *msgp.Writer) (err error) {
 		err = msgp.WrapError(err, "ID")
 		return
 	}
+	// write "PoolIndex"
+	err = en.Append(0xa9, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e, 0x64, 0x65, 0x78)
+	if err != nil {
+		return
+	}
+	err = en.WriteInt(z.PoolIndex)
+	if err != nil {
+		err = msgp.WrapError(err, "PoolIndex")
+		return
+	}
+	// write "SetIndex"
+	err = en.Append(0xa8, 0x53, 0x65, 0x74, 0x49, 0x6e, 0x64, 0x65, 0x78)
+	if err != nil {
+		return
+	}
+	err = en.WriteInt(z.SetIndex)
+	if err != nil {
+		err = msgp.WrapError(err, "SetIndex")
+		return
+	}
+	// write "DiskIndex"
+	err = en.Append(0xa9, 0x44, 0x69, 0x73, 0x6b, 0x49, 0x6e, 0x64, 0x65, 0x78)
+	if err != nil {
+		return
+	}
+	err = en.WriteInt(z.DiskIndex)
+	if err != nil {
+		err = msgp.WrapError(err, "DiskIndex")
+		return
+	}
+	// write "Path"
+	err = en.Append(0xa4, 0x50, 0x61, 0x74, 0x68)
+	if err != nil {
+		return
+	}
+	err = en.WriteString(z.Path)
+	if err != nil {
+		err = msgp.WrapError(err, "Path")
+		return
+	}
+	// write "Endpoint"
+	err = en.Append(0xa8, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74)
+	if err != nil {
+		return
+	}
+	err = en.WriteString(z.Endpoint)
+	if err != nil {
+		err = msgp.WrapError(err, "Endpoint")
+		return
+	}
+	// write "Started"
+	err = en.Append(0xa7, 0x53, 0x74, 0x61, 0x72, 0x74, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteTime(z.Started)
+	if err != nil {
+		err = msgp.WrapError(err, "Started")
+		return
+	}
+	// write "LastUpdate"
+	err = en.Append(0xaa, 0x4c, 0x61, 0x73, 0x74, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65)
+	if err != nil {
+		return
+	}
+	err = en.WriteTime(z.LastUpdate)
+	if err != nil {
+		err = msgp.WrapError(err, "LastUpdate")
+		return
+	}
+	// write "ObjectsHealed"
+	err = en.Append(0xad, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x48, 0x65, 0x61, 0x6c, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.ObjectsHealed)
+	if err != nil {
+		err = msgp.WrapError(err, "ObjectsHealed")
+		return
+	}
+	// write "ObjectsFailed"
+	err = en.Append(0xad, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.ObjectsFailed)
+	if err != nil {
+		err = msgp.WrapError(err, "ObjectsFailed")
+		return
+	}
+	// write "BytesDone"
+	err = en.Append(0xa9, 0x42, 0x79, 0x74, 0x65, 0x73, 0x44, 0x6f, 0x6e, 0x65)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.BytesDone)
+	if err != nil {
+		err = msgp.WrapError(err, "BytesDone")
+		return
+	}
+	// write "BytesFailed"
+	err = en.Append(0xab, 0x42, 0x79, 0x74, 0x65, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.BytesFailed)
+	if err != nil {
+		err = msgp.WrapError(err, "BytesFailed")
+		return
+	}
+	// write "Bucket"
+	err = en.Append(0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
+	if err != nil {
+		return
+	}
+	err = en.WriteString(z.Bucket)
+	if err != nil {
+		err = msgp.WrapError(err, "Bucket")
+		return
+	}
+	// write "Object"
+	err = en.Append(0xa6, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74)
+	if err != nil {
+		return
+	}
+	err = en.WriteString(z.Object)
+	if err != nil {
+		err = msgp.WrapError(err, "Object")
+		return
+	}
+	// write "ResumeObjectsHealed"
+	err = en.Append(0xb3, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x48, 0x65, 0x61, 0x6c, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.ResumeObjectsHealed)
+	if err != nil {
+		err = msgp.WrapError(err, "ResumeObjectsHealed")
+		return
+	}
+	// write "ResumeObjectsFailed"
+	err = en.Append(0xb3, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.ResumeObjectsFailed)
+	if err != nil {
+		err = msgp.WrapError(err, "ResumeObjectsFailed")
+		return
+	}
+	// write "ResumeBytesDone"
+	err = en.Append(0xaf, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x42, 0x79, 0x74, 0x65, 0x73, 0x44, 0x6f, 0x6e, 0x65)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.ResumeBytesDone)
+	if err != nil {
+		err = msgp.WrapError(err, "ResumeBytesDone")
+		return
+	}
+	// write "ResumeBytesFailed"
+	err = en.Append(0xb1, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x42, 0x79, 0x74, 0x65, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	if err != nil {
+		return
+	}
+	err = en.WriteUint64(z.ResumeBytesFailed)
+	if err != nil {
+		err = msgp.WrapError(err, "ResumeBytesFailed")
+		return
+	}
+	// write "QueuedBuckets"
+	err = en.Append(0xad, 0x51, 0x75, 0x65, 0x75, 0x65, 0x64, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74, 0x73)
+	if err != nil {
+		return
+	}
+	err = en.WriteArrayHeader(uint32(len(z.QueuedBuckets)))
+	if err != nil {
+		err = msgp.WrapError(err, "QueuedBuckets")
+		return
+	}
+	for za0001 := range z.QueuedBuckets {
+		err = en.WriteString(z.QueuedBuckets[za0001])
+		if err != nil {
+			err = msgp.WrapError(err, "QueuedBuckets", za0001)
+			return
+		}
+	}
+	// write "HealedBuckets"
+	err = en.Append(0xad, 0x48, 0x65, 0x61, 0x6c, 0x65, 0x64, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74, 0x73)
+	if err != nil {
+		return
+	}
+	err = en.WriteArrayHeader(uint32(len(z.HealedBuckets)))
+	if err != nil {
+		err = msgp.WrapError(err, "HealedBuckets")
+		return
+	}
+	for za0002 := range z.HealedBuckets {
+		err = en.WriteString(z.HealedBuckets[za0002])
+		if err != nil {
+			err = msgp.WrapError(err, "HealedBuckets", za0002)
+			return
+		}
+	}
 	return
 }
 
 // MarshalMsg implements msgp.Marshaler
-func (z healingTracker) MarshalMsg(b []byte) (o []byte, err error) {
+func (z *healingTracker) MarshalMsg(b []byte) (o []byte, err error) {
 	o = msgp.Require(b, z.Msgsize())
-	// map header, size 1
+	// map header, size 20
 	// string "ID"
-	o = append(o, 0x81, 0xa2, 0x49, 0x44)
+	o = append(o, 0xde, 0x0, 0x14, 0xa2, 0x49, 0x44)
 	o = msgp.AppendString(o, z.ID)
+	// string "PoolIndex"
+	o = append(o, 0xa9, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e, 0x64, 0x65, 0x78)
+	o = msgp.AppendInt(o, z.PoolIndex)
+	// string "SetIndex"
+	o = append(o, 0xa8, 0x53, 0x65, 0x74, 0x49, 0x6e, 0x64, 0x65, 0x78)
+	o = msgp.AppendInt(o, z.SetIndex)
+	// string "DiskIndex"
+	o = append(o, 0xa9, 0x44, 0x69, 0x73, 0x6b, 0x49, 0x6e, 0x64, 0x65, 0x78)
+	o = msgp.AppendInt(o, z.DiskIndex)
+	// string "Path"
+	o = append(o, 0xa4, 0x50, 0x61, 0x74, 0x68)
+	o = msgp.AppendString(o, z.Path)
+	// string "Endpoint"
+	o = append(o, 0xa8, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74)
+	o = msgp.AppendString(o, z.Endpoint)
+	// string "Started"
+	o = append(o, 0xa7, 0x53, 0x74, 0x61, 0x72, 0x74, 0x65, 0x64)
+	o = msgp.AppendTime(o, z.Started)
+	// string "LastUpdate"
+	o = append(o, 0xaa, 0x4c, 0x61, 0x73, 0x74, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65)
+	o = msgp.AppendTime(o, z.LastUpdate)
+	// string "ObjectsHealed"
+	o = append(o, 0xad, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x48, 0x65, 0x61, 0x6c, 0x65, 0x64)
+	o = msgp.AppendUint64(o, z.ObjectsHealed)
+	// string "ObjectsFailed"
+	o = append(o, 0xad, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	o = msgp.AppendUint64(o, z.ObjectsFailed)
+	// string "BytesDone"
+	o = append(o, 0xa9, 0x42, 0x79, 0x74, 0x65, 0x73, 0x44, 0x6f, 0x6e, 0x65)
+	o = msgp.AppendUint64(o, z.BytesDone)
+	// string "BytesFailed"
+	o = append(o, 0xab, 0x42, 0x79, 0x74, 0x65, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	o = msgp.AppendUint64(o, z.BytesFailed)
+	// string "Bucket"
+	o = append(o, 0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
+	o = msgp.AppendString(o, z.Bucket)
+	// string "Object"
+	o = append(o, 0xa6, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74)
+	o = msgp.AppendString(o, z.Object)
+	// string "ResumeObjectsHealed"
+	o = append(o, 0xb3, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x48, 0x65, 0x61, 0x6c, 0x65, 0x64)
+	o = msgp.AppendUint64(o, z.ResumeObjectsHealed)
+	// string "ResumeObjectsFailed"
+	o = append(o, 0xb3, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	o = msgp.AppendUint64(o, z.ResumeObjectsFailed)
+	// string "ResumeBytesDone"
+	o = append(o, 0xaf, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x42, 0x79, 0x74, 0x65, 0x73, 0x44, 0x6f, 0x6e, 0x65)
+	o = msgp.AppendUint64(o, z.ResumeBytesDone)
+	// string "ResumeBytesFailed"
+	o = append(o, 0xb1, 0x52, 0x65, 0x73, 0x75, 0x6d, 0x65, 0x42, 0x79, 0x74, 0x65, 0x73, 0x46, 0x61, 0x69, 0x6c, 0x65, 0x64)
+	o = msgp.AppendUint64(o, z.ResumeBytesFailed)
+	// string "QueuedBuckets"
+	o = append(o, 0xad, 0x51, 0x75, 0x65, 0x75, 0x65, 0x64, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74, 0x73)
+	o = msgp.AppendArrayHeader(o, uint32(len(z.QueuedBuckets)))
+	for za0001 := range z.QueuedBuckets {
+		o = msgp.AppendString(o, z.QueuedBuckets[za0001])
+	}
+	// string "HealedBuckets"
+	o = append(o, 0xad, 0x48, 0x65, 0x61, 0x6c, 0x65, 0x64, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74, 0x73)
+	o = msgp.AppendArrayHeader(o, uint32(len(z.HealedBuckets)))
+	for za0002 := range z.HealedBuckets {
+		o = msgp.AppendString(o, z.HealedBuckets[za0002])
+	}
 	return
 }
 
@@ -91,6 +498,146 @@ func (z *healingTracker) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				err = msgp.WrapError(err, "ID")
 				return
 			}
+		case "PoolIndex":
+			z.PoolIndex, bts, err = msgp.ReadIntBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "PoolIndex")
+				return
+			}
+		case "SetIndex":
+			z.SetIndex, bts, err = msgp.ReadIntBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "SetIndex")
+				return
+			}
+		case "DiskIndex":
+			z.DiskIndex, bts, err = msgp.ReadIntBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "DiskIndex")
+				return
+			}
+		case "Path":
+			z.Path, bts, err = msgp.ReadStringBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "Path")
+				return
+			}
+		case "Endpoint":
+			z.Endpoint, bts, err = msgp.ReadStringBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "Endpoint")
+				return
+			}
+		case "Started":
+			z.Started, bts, err = msgp.ReadTimeBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "Started")
+				return
+			}
+		case "LastUpdate":
+			z.LastUpdate, bts, err = msgp.ReadTimeBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "LastUpdate")
+				return
+			}
+		case "ObjectsHealed":
+			z.ObjectsHealed, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "ObjectsHealed")
+				return
+			}
+		case "ObjectsFailed":
+			z.ObjectsFailed, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "ObjectsFailed")
+				return
+			}
+		case "BytesDone":
+			z.BytesDone, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "BytesDone")
+				return
+			}
+		case "BytesFailed":
+			z.BytesFailed, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "BytesFailed")
+				return
+			}
+		case "Bucket":
+			z.Bucket, bts, err = msgp.ReadStringBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "Bucket")
+				return
+			}
+		case "Object":
+			z.Object, bts, err = msgp.ReadStringBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "Object")
+				return
+			}
+		case "ResumeObjectsHealed":
+			z.ResumeObjectsHealed, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeObjectsHealed")
+				return
+			}
+		case "ResumeObjectsFailed":
+			z.ResumeObjectsFailed, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeObjectsFailed")
+				return
+			}
+		case "ResumeBytesDone":
+			z.ResumeBytesDone, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeBytesDone")
+				return
+			}
+		case "ResumeBytesFailed":
+			z.ResumeBytesFailed, bts, err = msgp.ReadUint64Bytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "ResumeBytesFailed")
+				return
+			}
+		case "QueuedBuckets":
+			var zb0002 uint32
+			zb0002, bts, err = msgp.ReadArrayHeaderBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "QueuedBuckets")
+				return
+			}
+			if cap(z.QueuedBuckets) >= int(zb0002) {
+				z.QueuedBuckets = (z.QueuedBuckets)[:zb0002]
+			} else {
+				z.QueuedBuckets = make([]string, zb0002)
+			}
+			for za0001 := range z.QueuedBuckets {
+				z.QueuedBuckets[za0001], bts, err = msgp.ReadStringBytes(bts)
+				if err != nil {
+					err = msgp.WrapError(err, "QueuedBuckets", za0001)
+					return
+				}
+			}
+		case "HealedBuckets":
+			var zb0003 uint32
+			zb0003, bts, err = msgp.ReadArrayHeaderBytes(bts)
+			if err != nil {
+				err = msgp.WrapError(err, "HealedBuckets")
+				return
+			}
+			if cap(z.HealedBuckets) >= int(zb0003) {
+				z.HealedBuckets = (z.HealedBuckets)[:zb0003]
+			} else {
+				z.HealedBuckets = make([]string, zb0003)
+			}
+			for za0002 := range z.HealedBuckets {
+				z.HealedBuckets[za0002], bts, err = msgp.ReadStringBytes(bts)
+				if err != nil {
+					err = msgp.WrapError(err, "HealedBuckets", za0002)
+					return
+				}
+			}
 		default:
 			bts, err = msgp.Skip(bts)
 			if err != nil {
@@ -104,7 +651,14 @@ func (z *healingTracker) UnmarshalMsg(bts []byte) (o []byte, err error) {
 }
 
 // Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
-func (z healingTracker) Msgsize() (s int) {
-	s = 1 + 3 + msgp.StringPrefixSize + len(z.ID)
+func (z *healingTracker) Msgsize() (s int) {
+	s = 3 + 3 + msgp.StringPrefixSize + len(z.ID) + 10 + msgp.IntSize + 9 + msgp.IntSize + 10 + msgp.IntSize + 5 + msgp.StringPrefixSize + len(z.Path) + 9 + msgp.StringPrefixSize + len(z.Endpoint) + 8 + msgp.TimeSize + 11 + msgp.TimeSize + 14 + msgp.Uint64Size + 14 + msgp.Uint64Size + 10 + msgp.Uint64Size + 12 + msgp.Uint64Size + 7 + msgp.StringPrefixSize + len(z.Bucket) + 7 + msgp.StringPrefixSize + len(z.Object) + 20 + msgp.Uint64Size + 20 + msgp.Uint64Size + 16 + msgp.Uint64Size + 18 + msgp.Uint64Size + 14 + msgp.ArrayHeaderSize
+	for za0001 := range z.QueuedBuckets {
+		s += msgp.StringPrefixSize + len(z.QueuedBuckets[za0001])
+	}
+	s += 14 + msgp.ArrayHeaderSize
+	for za0002 := range z.HealedBuckets {
+		s += msgp.StringPrefixSize + len(z.HealedBuckets[za0002])
+	}
 	return
 }

cmd/benchmark-utils_test.go

@@ -19,7 +19,6 @@ package cmd
 import (
 	"bytes"
 	"context"
-	"io/ioutil"
 	"math"
 	"math/rand"
 	"strconv"
@@ -175,56 +174,6 @@ func benchmarkPutObjectParallel(b *testing.B, instanceType string, objSize int)
 	runPutObjectBenchmarkParallel(b, objLayer, objSize)
 }
 
-// Benchmark utility functions for ObjectLayer.GetObject().
-// Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
-func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
-	// obtains random bucket name.
-	bucket := getRandomBucketName()
-	// create bucket.
-	err := obj.MakeBucketWithLocation(context.Background(), bucket, BucketOptions{})
-	if err != nil {
-		b.Fatal(err)
-	}
-
-	textData := generateBytesData(objSize)
-
-	// generate etag for the generated data.
-	// etag of the data to written is required as input for PutObject.
-	// PutObject is the functions which writes the data onto the FS/Erasure backend.
-
-	// get text data generated for number of bytes equal to object size.
-	md5hex := getMD5Hash(textData)
-	sha256hex := ""
-
-	for i := 0; i < 10; i++ {
-		// insert the object.
-		var objInfo ObjectInfo
-		objInfo, err = obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
-			mustGetPutObjReader(b, bytes.NewReader(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})
-		if err != nil {
-			b.Fatal(err)
-		}
-		if objInfo.ETag != md5hex {
-			b.Fatalf("Write no: %d: Md5Sum mismatch during object write into the bucket: Expected %s, got %s", i+1, objInfo.ETag, md5hex)
-		}
-	}
-
-	// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
-	b.ReportAllocs()
-	// the actual benchmark for GetObject starts here. Reset the benchmark timer.
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		var buffer = new(bytes.Buffer)
-		err = obj.GetObject(context.Background(), bucket, "object"+strconv.Itoa(i%10), 0, int64(objSize), buffer, "", ObjectOptions{})
-		if err != nil {
-			b.Error(err)
-		}
-	}
-	// Benchmark ends here. Stop timer.
-	b.StopTimer()
-
-}
-
 // randomly picks a character and returns its equivalent byte array.
 func getRandomByte() []byte {
 	const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
@@ -240,38 +189,6 @@ func generateBytesData(size int) []byte {
 	return bytes.Repeat(getRandomByte(), size)
 }
 
-// creates Erasure/FS backend setup, obtains the object layer and calls the runGetObjectBenchmark function.
-func benchmarkGetObject(b *testing.B, instanceType string, objSize int) {
-	// create a temp Erasure/FS backend.
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	objLayer, disks, err := prepareTestBackend(ctx, instanceType)
-	if err != nil {
-		b.Fatalf("Failed obtaining Temp Backend: <ERROR> %s", err)
-	}
-	// cleaning up the backend by removing all the directories and files created.
-	defer removeRoots(disks)
-
-	//  uses *testing.B and the object Layer to run the benchmark.
-	runGetObjectBenchmark(b, objLayer, objSize)
-}
-
-// creates Erasure/FS backend setup, obtains the object layer and runs parallel benchmark for ObjectLayer.GetObject() .
-func benchmarkGetObjectParallel(b *testing.B, instanceType string, objSize int) {
-	// create a temp Erasure/FS backend.
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	objLayer, disks, err := prepareTestBackend(ctx, instanceType)
-	if err != nil {
-		b.Fatalf("Failed obtaining Temp Backend: <ERROR> %s", err)
-	}
-	// cleaning up the backend by removing all the directories and files created.
-	defer removeRoots(disks)
-
-	//  uses *testing.B and the object Layer to run the benchmark.
-	runGetObjectBenchmarkParallel(b, objLayer, objSize)
-}
-
 // Parallel benchmark utility functions for ObjectLayer.PutObject().
 // Creates Object layer setup ( MakeBucket ) and then runs the PutObject benchmark.
 func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
@@ -315,58 +232,3 @@ func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 	// Benchmark ends here. Stop timer.
 	b.StopTimer()
 }
-
-// Parallel benchmark utility functions for ObjectLayer.GetObject().
-// Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
-func runGetObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
-	// obtains random bucket name.
-	bucket := getRandomBucketName()
-	// create bucket.
-	err := obj.MakeBucketWithLocation(context.Background(), bucket, BucketOptions{})
-	if err != nil {
-		b.Fatal(err)
-	}
-
-	// get text data generated for number of bytes equal to object size.
-	textData := generateBytesData(objSize)
-	// generate md5sum for the generated data.
-	// md5sum of the data to written is required as input for PutObject.
-	// PutObject is the functions which writes the data onto the FS/Erasure backend.
-
-	md5hex := getMD5Hash([]byte(textData))
-	sha256hex := ""
-
-	for i := 0; i < 10; i++ {
-		// insert the object.
-		var objInfo ObjectInfo
-		objInfo, err = obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
-			mustGetPutObjReader(b, bytes.NewReader(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})
-		if err != nil {
-			b.Fatal(err)
-		}
-		if objInfo.ETag != md5hex {
-			b.Fatalf("Write no: %d: Md5Sum mismatch during object write into the bucket: Expected %s, got %s", i+1, objInfo.ETag, md5hex)
-		}
-	}
-
-	// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
-	b.ReportAllocs()
-	// the actual benchmark for GetObject starts here. Reset the benchmark timer.
-	b.ResetTimer()
-	b.RunParallel(func(pb *testing.PB) {
-		i := 0
-		for pb.Next() {
-			err = obj.GetObject(context.Background(), bucket, "object"+strconv.Itoa(i), 0, int64(objSize), ioutil.Discard, "", ObjectOptions{})
-			if err != nil {
-				b.Error(err)
-			}
-			i++
-			if i == 10 {
-				i = 0
-			}
-		}
-	})
-	// Benchmark ends here. Stop timer.
-	b.StopTimer()
-
-}

cmd/bitrot.go

@@ -17,13 +17,13 @@
 package cmd
 
 import (
+	"crypto/sha256"
 	"errors"
 	"hash"
 	"io"
 
 	"github.com/minio/highwayhash"
 	"github.com/minio/minio/cmd/logger"
-	sha256 "github.com/minio/sha256-simd"
 	"golang.org/x/crypto/blake2b"
 )
 

cmd/bitrot_test.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"io"
 	"io/ioutil"
-	"log"
 	"os"
 	"testing"
 )
@@ -28,7 +27,7 @@ import (
 func testBitrotReaderWriterAlgo(t *testing.T, bitrotAlgo BitrotAlgorithm) {
 	tmpDir, err := ioutil.TempDir("", "")
 	if err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	defer os.RemoveAll(tmpDir)
 
@@ -46,35 +45,35 @@ func testBitrotReaderWriterAlgo(t *testing.T, bitrotAlgo BitrotAlgorithm) {
 
 	_, err = writer.Write([]byte("aaaaaaaaaa"))
 	if err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	_, err = writer.Write([]byte("aaaaaaaaaa"))
 	if err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	_, err = writer.Write([]byte("aaaaaaaaaa"))
 	if err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	_, err = writer.Write([]byte("aaaaa"))
 	if err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	writer.(io.Closer).Close()
 
 	reader := newBitrotReader(disk, nil, volume, filePath, 35, bitrotAlgo, bitrotWriterSum(writer), 10)
 	b := make([]byte, 10)
 	if _, err = reader.ReadAt(b, 0); err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	if _, err = reader.ReadAt(b, 10); err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	if _, err = reader.ReadAt(b, 20); err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 	if _, err = reader.ReadAt(b[:5], 30); err != nil {
-		log.Fatal(err)
+		t.Fatal(err)
 	}
 }
 

cmd/bucket-handlers.go

@@ -17,14 +17,15 @@
 package cmd
 
 import (
+	"crypto/subtle"
 	"encoding/base64"
 	"encoding/xml"
 	"fmt"
 	"io"
 	"net/http"
+	"net/textproto"
 	"net/url"
 	"path"
-	"path/filepath"
 	"sort"
 	"strconv"
 	"strings"
@@ -125,7 +126,10 @@ func initFederatorBackend(buckets []BucketInfo, objLayer ObjectLayer) {
 
 	// Add/update buckets that are not registered with the DNS
 	bucketsToBeUpdatedSlice := bucketsToBeUpdated.ToSlice()
-	g := errgroup.WithNErrs(len(bucketsToBeUpdatedSlice))
+	g := errgroup.WithNErrs(len(bucketsToBeUpdatedSlice)).WithConcurrency(50)
+	ctx, cancel := g.WithCancelOnError(GlobalContext)
+	defer cancel()
+
 	for index := range bucketsToBeUpdatedSlice {
 		index := index
 		g.Go(func() error {
@@ -133,14 +137,13 @@ func initFederatorBackend(buckets []BucketInfo, objLayer ObjectLayer) {
 		}, index)
 	}
 
-	for _, err := range g.Wait() {
-		if err != nil {
-			logger.LogIf(GlobalContext, err)
-		}
+	if err := g.WaitErr(); err != nil {
+		logger.LogIf(ctx, err)
+		return
 	}
 
 	for _, bucket := range bucketsInConflict.ToSlice() {
-		logger.LogIf(GlobalContext, fmt.Errorf("Unable to add bucket DNS entry for bucket %s, an entry exists for the same bucket by a different tenant. This local bucket will be ignored. Bucket names are globally unique in federated deployments. Use path style requests on following addresses '%v' to access this bucket.", bucket, globalDomainIPs.ToSlice()))
+		logger.LogIf(ctx, fmt.Errorf("Unable to add bucket DNS entry for bucket %s, an entry exists for the same bucket by a different tenant. This local bucket will be ignored. Bucket names are globally unique in federated deployments. Use path style requests on following addresses '%v' to access this bucket", bucket, globalDomainIPs.ToSlice()))
 	}
 
 	var wg sync.WaitGroup
@@ -334,7 +337,7 @@ func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.R
 
 		// err will be nil here as we already called this function
 		// earlier in this request.
-		claims, _ := getClaimsFromToken(r, getSessionToken(r))
+		claims, _ := getClaimsFromToken(getSessionToken(r))
 		n := 0
 		// Use the following trick to filter in place
 		// https://github.com/golang/go/wiki/SliceTricks#filter-in-place
@@ -424,6 +427,12 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 		deleteObjectsFn = api.CacheAPI().DeleteObjects
 	}
 
+	// Return Malformed XML as S3 spec if the list of objects is empty
+	if len(deleteObjects.Objects) == 0 {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
 	var objectsToDelete = map[ObjectToDelete]int{}
 	getObjectInfoFn := objectAPI.GetObjectInfo
 	if api.CacheAPI() != nil {
@@ -544,7 +553,6 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 		dindex := objectsToDelete[ObjectToDelete{
 			ObjectName:                    dObjects[i].ObjectName,
 			VersionID:                     dObjects[i].VersionID,
-			DeleteMarkerVersionID:         dObjects[i].DeleteMarkerVersionID,
 			VersionPurgeStatus:            dObjects[i].VersionPurgeStatus,
 			DeleteMarkerReplicationStatus: dObjects[i].DeleteMarkerReplicationStatus,
 			PurgeTransitioned:             dObjects[i].PurgeTransitioned,
@@ -580,6 +588,10 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 	// Write success response.
 	writeSuccessResponseXML(w, encodedSuccessResponse)
 	for _, dobj := range deletedObjects {
+		if dobj.ObjectName == "" {
+			continue
+		}
+
 		if replicateDeletes {
 			if dobj.DeleteMarkerReplicationStatus == string(replication.Pending) || dobj.VersionPurgeStatus == Pending {
 				dv := DeletedObjectVersionInfo{
@@ -591,22 +603,14 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 		}
 
 		if hasLifecycleConfig && dobj.PurgeTransitioned == lifecycle.TransitionComplete { // clean up transitioned tier
-			action := lifecycle.DeleteAction
-			if dobj.VersionID != "" {
-				action = lifecycle.DeleteVersionAction
-			}
-			deleteTransitionedObject(ctx, newObjectLayerFn(), bucket, dobj.ObjectName, lifecycle.ObjectOpts{
+			deleteTransitionedObject(ctx, objectAPI, bucket, dobj.ObjectName, lifecycle.ObjectOpts{
 				Name:         dobj.ObjectName,
 				VersionID:    dobj.VersionID,
 				DeleteMarker: dobj.DeleteMarker,
-			}, action, true)
+			}, false, true)
 		}
 
-	}
-	// Notify deleted event for objects.
-	for _, dobj := range deletedObjects {
 		eventName := event.ObjectRemovedDelete
-
 		objInfo := ObjectInfo{
 			Name:      dobj.ObjectName,
 			VersionID: dobj.VersionID,
@@ -793,13 +797,15 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL, guessIsBrowserReq(r))
 		return
 	}
+
 	resource, err := getResource(r.URL.Path, r.Host, globalDomainNames)
 	if err != nil {
 		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL, guessIsBrowserReq(r))
 		return
 	}
-	// Make sure that the URL  does not contain object name.
-	if bucket != filepath.Clean(resource[1:]) {
+
+	// Make sure that the URL does not contain object name.
+	if bucket != path.Clean(resource[1:]) {
 		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL, guessIsBrowserReq(r))
 		return
 	}
@@ -842,7 +848,6 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	defer fileBody.Close()
 
 	formValues.Set("Bucket", bucket)
-
 	if fileName != "" && strings.Contains(formValues.Get("Key"), "${filename}") {
 		// S3 feature to replace ${filename} found in Key form field
 		// by the filename attribute passed in multipart
@@ -850,6 +855,12 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	}
 	object := formValues.Get("Key")
 
+	object, err = unescapePath(object)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
 	successRedirect := formValues.Get("success_action_redirect")
 	successStatus := formValues.Get("success_action_status")
 	var redirectURL *url.URL
@@ -862,12 +873,51 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	}
 
 	// Verify policy signature.
-	errCode := doesPolicySignatureMatch(formValues)
+	cred, errCode := doesPolicySignatureMatch(formValues)
 	if errCode != ErrNone {
 		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(errCode), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
+	// Once signature is validated, check if the user has
+	// explicit permissions for the user.
+	{
+		token := formValues.Get(xhttp.AmzSecurityToken)
+		if token != "" && cred.AccessKey == "" {
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNoAccessKey), r.URL, guessIsBrowserReq(r))
+			return
+		}
+
+		if cred.IsServiceAccount() && token == "" {
+			token = cred.SessionToken
+		}
+
+		if subtle.ConstantTimeCompare([]byte(token), []byte(cred.SessionToken)) != 1 {
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidToken), r.URL, guessIsBrowserReq(r))
+			return
+		}
+
+		// Extract claims if any.
+		claims, err := getClaimsFromToken(token)
+		if err != nil {
+			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+			return
+		}
+
+		if !globalIAMSys.IsAllowed(iampolicy.Args{
+			AccountName:     cred.AccessKey,
+			Action:          iampolicy.PutObjectAction,
+			ConditionValues: getConditionValues(r, "", cred.AccessKey, claims),
+			BucketName:      bucket,
+			ObjectName:      object,
+			IsOwner:         globalActiveCred.AccessKey == cred.AccessKey,
+			Claims:          claims,
+		}) {
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrAccessDenied), r.URL, guessIsBrowserReq(r))
+			return
+		}
+	}
+
 	policyBytes, err := base64.StdEncoding.DecodeString(formValues.Get("Policy"))
 	if err != nil {
 		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedPOSTRequest), r.URL, guessIsBrowserReq(r))
@@ -907,20 +957,20 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 
 	// Extract metadata to be saved from received Form.
 	metadata := make(map[string]string)
-	err = extractMetadataFromMap(ctx, formValues, metadata)
+	err = extractMetadataFromMime(ctx, textproto.MIMEHeader(formValues), metadata)
 	if err != nil {
 		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 
-	hashReader, err := hash.NewReader(fileBody, fileSize, "", "", fileSize, globalCLIContext.StrictS3Compat)
+	hashReader, err := hash.NewReader(fileBody, fileSize, "", "", fileSize)
 	if err != nil {
 		logger.LogIf(ctx, err)
 		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 		return
 	}
 	rawReader := hashReader
-	pReader := NewPutObjReader(rawReader, nil, nil)
+	pReader := NewPutObjReader(rawReader)
 	var objectEncryptionKey crypto.ObjectKey
 
 	// Check if bucket encryption is enabled
@@ -960,12 +1010,16 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 			}
 			info := ObjectInfo{Size: fileSize}
 			// do not try to verify encrypted content
-			hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", fileSize, globalCLIContext.StrictS3Compat)
+			hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", fileSize)
+			if err != nil {
+				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+				return
+			}
+			pReader, err = pReader.WithEncryption(hashReader, &objectEncryptionKey)
 			if err != nil {
 				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 				return
 			}
-			pReader = NewPutObjReader(rawReader, hashReader, &objectEncryptionKey)
 		}
 	}
 
@@ -1022,6 +1076,64 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 	}
 }
 
+// GetBucketPolicyStatusHandler -  Retrieves the policy status
+// for an MinIO bucket, indicating whether the bucket is public.
+func (api objectAPIHandlers) GetBucketPolicyStatusHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "GetBucketPolicyStatus")
+
+	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
+
+	vars := mux.Vars(r)
+	bucket := vars["bucket"]
+
+	objectAPI := api.ObjectAPI()
+	if objectAPI == nil {
+		writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrServerNotInitialized))
+		return
+	}
+
+	if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyStatusAction, bucket, ""); s3Error != ErrNone {
+		writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(s3Error))
+		return
+	}
+
+	// Check if bucket exists.
+	if _, err := objectAPI.GetBucketInfo(ctx, bucket); err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
+	// Check if anonymous (non-owner) has access to list objects.
+	readable := globalPolicySys.IsAllowed(policy.Args{
+		Action:          policy.ListBucketAction,
+		BucketName:      bucket,
+		ConditionValues: getConditionValues(r, "", "", nil),
+		IsOwner:         false,
+	})
+
+	// Check if anonymous (non-owner) has access to upload objects.
+	writable := globalPolicySys.IsAllowed(policy.Args{
+		Action:          policy.PutObjectAction,
+		BucketName:      bucket,
+		ConditionValues: getConditionValues(r, "", "", nil),
+		IsOwner:         false,
+	})
+
+	encodedSuccessResponse := encodeResponse(PolicyStatus{
+		IsPublic: func() string {
+			// Silly to have special 'boolean' values yes
+			// but complying with silly implementation
+			// https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketPolicyStatus.html
+			if readable && writable {
+				return "TRUE"
+			}
+			return "FALSE"
+		}(),
+	})
+
+	writeSuccessResponseXML(w, encodedSuccessResponse)
+}
+
 // HeadBucketHandler - HEAD Bucket
 // ----------
 // This operation is useful to determine if a bucket exists.

cmd/bucket-lifecycle.go

@@ -65,6 +65,46 @@ func NewLifecycleSys() *LifecycleSys {
 	return &LifecycleSys{}
 }
 
+type expiryTask struct {
+	objInfo       ObjectInfo
+	versionExpiry bool
+}
+
+type expiryState struct {
+	expiryCh chan expiryTask
+}
+
+func (es *expiryState) queueExpiryTask(oi ObjectInfo, rmVersion bool) {
+	select {
+	case es.expiryCh <- expiryTask{objInfo: oi, versionExpiry: rmVersion}:
+	default:
+	}
+}
+
+var (
+	globalExpiryState *expiryState
+)
+
+func newExpiryState() *expiryState {
+	es := &expiryState{
+		expiryCh: make(chan expiryTask, 10000),
+	}
+	go func() {
+		<-GlobalContext.Done()
+		close(es.expiryCh)
+	}()
+	return es
+}
+
+func initBackgroundExpiry(ctx context.Context, objectAPI ObjectLayer) {
+	globalExpiryState = newExpiryState()
+	go func() {
+		for t := range globalExpiryState.expiryCh {
+			applyExpiryRule(ctx, objectAPI, t.objInfo, false, t.versionExpiry)
+		}
+	}()
+}
+
 type transitionState struct {
 	// add future metrics here
 	transitionCh chan ObjectInfo
@@ -205,16 +245,11 @@ func transitionSCInUse(ctx context.Context, lfc *lifecycle.Lifecycle, bucket, ar
 }
 
 // set PutObjectOptions for PUT operation to transition data to target cluster
-func putTransitionOpts(objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions) {
+func putTransitionOpts(objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions, err error) {
 	meta := make(map[string]string)
 
-	tag, err := tags.ParseObjectTags(objInfo.UserTags)
-	if err != nil {
-		return
-	}
 	putOpts = miniogo.PutObjectOptions{
 		UserMetadata:    meta,
-		UserTags:        tag.ToMap(),
 		ContentType:     objInfo.ContentType,
 		ContentEncoding: objInfo.ContentEncoding,
 		StorageClass:    objInfo.StorageClass,
@@ -224,29 +259,47 @@ func putTransitionOpts(objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions) {
 			SourceETag:      objInfo.ETag,
 		},
 	}
-	if mode, ok := objInfo.UserDefined[xhttp.AmzObjectLockMode]; ok {
+
+	if objInfo.UserTags != "" {
+		tag, _ := tags.ParseObjectTags(objInfo.UserTags)
+		if tag != nil {
+			putOpts.UserTags = tag.ToMap()
+		}
+	}
+
+	lkMap := caseInsensitiveMap(objInfo.UserDefined)
+	if lang, ok := lkMap.Lookup(xhttp.ContentLanguage); ok {
+		putOpts.ContentLanguage = lang
+	}
+	if disp, ok := lkMap.Lookup(xhttp.ContentDisposition); ok {
+		putOpts.ContentDisposition = disp
+	}
+	if cc, ok := lkMap.Lookup(xhttp.CacheControl); ok {
+		putOpts.CacheControl = cc
+	}
+	if mode, ok := lkMap.Lookup(xhttp.AmzObjectLockMode); ok {
 		rmode := miniogo.RetentionMode(mode)
 		putOpts.Mode = rmode
 	}
-	if retainDateStr, ok := objInfo.UserDefined[xhttp.AmzObjectLockRetainUntilDate]; ok {
+	if retainDateStr, ok := lkMap.Lookup(xhttp.AmzObjectLockRetainUntilDate); ok {
 		rdate, err := time.Parse(time.RFC3339, retainDateStr)
 		if err != nil {
-			return
+			return putOpts, err
 		}
 		putOpts.RetainUntilDate = rdate
 	}
-	if lhold, ok := objInfo.UserDefined[xhttp.AmzObjectLockLegalHold]; ok {
+	if lhold, ok := lkMap.Lookup(xhttp.AmzObjectLockLegalHold); ok {
 		putOpts.LegalHold = miniogo.LegalHoldStatus(lhold)
 	}
 
-	return
+	return putOpts, nil
 }
 
 // handle deletes of transitioned objects or object versions when one of the following is true:
 // 1. temporarily restored copies of objects (restored with the PostRestoreObject API) expired.
 // 2. life cycle expiry date is met on the object.
 // 3. Object is removed through DELETE api call
-func deleteTransitionedObject(ctx context.Context, objectAPI ObjectLayer, bucket, object string, lcOpts lifecycle.ObjectOpts, action lifecycle.Action, isDeleteTierOnly bool) error {
+func deleteTransitionedObject(ctx context.Context, objectAPI ObjectLayer, bucket, object string, lcOpts lifecycle.ObjectOpts, restoredObject, isDeleteTierOnly bool) error {
 	if lcOpts.TransitionStatus == "" && !isDeleteTierOnly {
 		return nil
 	}
@@ -266,44 +319,41 @@ func deleteTransitionedObject(ctx context.Context, objectAPI ObjectLayer, bucket
 	var opts ObjectOptions
 	opts.Versioned = globalBucketVersioningSys.Enabled(bucket)
 	opts.VersionID = lcOpts.VersionID
-	switch action {
-	case lifecycle.DeleteRestoredAction, lifecycle.DeleteRestoredVersionAction:
+	if restoredObject {
 		// delete locally restored copy of object or object version
 		// from the source, while leaving metadata behind. The data on
 		// transitioned tier lies untouched and still accessible
 		opts.TransitionStatus = lcOpts.TransitionStatus
 		_, err = objectAPI.DeleteObject(ctx, bucket, object, opts)
 		return err
-	case lifecycle.DeleteAction, lifecycle.DeleteVersionAction:
-		// When an object is past expiry, delete the data from transitioned tier and
-		// metadata from source
-		if err := tgt.RemoveObject(context.Background(), arn.Bucket, object, miniogo.RemoveObjectOptions{VersionID: lcOpts.VersionID}); err != nil {
-			logger.LogIf(ctx, err)
-		}
-
-		if isDeleteTierOnly {
-			return nil
-		}
-
-		objInfo, err := objectAPI.DeleteObject(ctx, bucket, object, opts)
-		if err != nil {
-			return err
-		}
-
-		eventName := event.ObjectRemovedDelete
-		if lcOpts.DeleteMarker {
-			eventName = event.ObjectRemovedDeleteMarkerCreated
-		}
-
-		// Notify object deleted event.
-		sendEvent(eventArgs{
-			EventName:  eventName,
-			BucketName: bucket,
-			Object:     objInfo,
-			Host:       "Internal: [ILM-EXPIRY]",
-		})
 	}
 
+	// When an object is past expiry, delete the data from transitioned tier and
+	// metadata from source
+	if err := tgt.RemoveObject(context.Background(), arn.Bucket, object, miniogo.RemoveObjectOptions{VersionID: lcOpts.VersionID}); err != nil {
+		logger.LogIf(ctx, err)
+	}
+
+	if isDeleteTierOnly {
+		return nil
+	}
+
+	objInfo, err := objectAPI.DeleteObject(ctx, bucket, object, opts)
+	if err != nil {
+		return err
+	}
+	eventName := event.ObjectRemovedDelete
+	if lcOpts.DeleteMarker {
+		eventName = event.ObjectRemovedDeleteMarkerCreated
+	}
+	// Notify object deleted event.
+	sendEvent(eventArgs{
+		EventName:  eventName,
+		BucketName: bucket,
+		Object:     objInfo,
+		Host:       "Internal: [ILM-EXPIRY]",
+	})
+
 	// should never reach here
 	return nil
 }
@@ -343,7 +393,12 @@ func transitionObject(ctx context.Context, objectAPI ObjectLayer, objInfo Object
 		return nil
 	}
 
-	putOpts := putTransitionOpts(oi)
+	putOpts, err := putTransitionOpts(oi)
+	if err != nil {
+		gr.Close()
+		return err
+
+	}
 	if _, err = tgt.PutObject(ctx, arn.Bucket, oi.Name, gr, oi.Size, putOpts); err != nil {
 		gr.Close()
 		return err
@@ -368,6 +423,7 @@ func transitionObject(ctx context.Context, objectAPI ObjectLayer, objInfo Object
 		Object:     objInfo,
 		Host:       "Internal: [ILM-Transition]",
 	})
+
 	return err
 }
 
@@ -636,11 +692,11 @@ func restoreTransitionedObject(ctx context.Context, bucket, object string, objAP
 		return err
 	}
 	defer gr.Close()
-	hashReader, err := hash.NewReader(gr, objInfo.Size, "", "", objInfo.Size, globalCLIContext.StrictS3Compat)
+	hashReader, err := hash.NewReader(gr, objInfo.Size, "", "", objInfo.Size)
 	if err != nil {
 		return err
 	}
-	pReader := NewPutObjReader(hashReader, nil, nil)
+	pReader := NewPutObjReader(hashReader)
 	opts := putRestoreOpts(bucket, object, rreq, objInfo)
 	opts.UserDefined[xhttp.AmzRestore] = fmt.Sprintf("ongoing-request=%t, expiry-date=%s", false, restoreExpiry.Format(http.TimeFormat))
 	if _, err := objAPI.PutObject(ctx, bucket, object, pReader, opts); err != nil {

cmd/bucket-listobjects-handlers.go

@@ -26,32 +26,25 @@ import (
 	"github.com/minio/minio/cmd/logger"
 
 	"github.com/minio/minio/pkg/bucket/policy"
-	"github.com/minio/minio/pkg/handlers"
 	"github.com/minio/minio/pkg/sync/errgroup"
 )
 
 func concurrentDecryptETag(ctx context.Context, objects []ObjectInfo) {
-	inParallel := func(objects []ObjectInfo) {
-		g := errgroup.WithNErrs(len(objects))
-		for index := range objects {
-			index := index
-			g.Go(func() error {
-				objects[index].ETag = objects[index].GetActualETag(nil)
-				objects[index].Size, _ = objects[index].GetActualSize()
-				return nil
-			}, index)
-		}
-		g.Wait()
-	}
-	const maxConcurrent = 500
-	for {
-		if len(objects) < maxConcurrent {
-			inParallel(objects)
-			return
-		}
-		inParallel(objects[:maxConcurrent])
-		objects = objects[maxConcurrent:]
+	g := errgroup.WithNErrs(len(objects)).WithConcurrency(500)
+	_, cancel := g.WithCancelOnError(ctx)
+	defer cancel()
+	for index := range objects {
+		index := index
+		g.Go(func() error {
+			size, err := objects[index].GetActualSize()
+			if err == nil {
+				objects[index].Size = size
+			}
+			objects[index].ETag = objects[index].GetActualETag(nil)
+			return nil
+		}, index)
 	}
+	g.WaitErr()
 }
 
 // Validate all the ListObjects query arguments, returns an APIErrorCode
@@ -301,10 +294,6 @@ func proxyRequestByNodeIndex(ctx context.Context, w http.ResponseWriter, r *http
 	return proxyRequest(ctx, w, r, ep)
 }
 
-func proxyRequestByStringHash(ctx context.Context, w http.ResponseWriter, r *http.Request, str string) (success bool) {
-	return proxyRequestByNodeIndex(ctx, w, r, crcHashMod(str, len(globalProxyEndpoints)))
-}
-
 // ListObjectsV1Handler - GET Bucket (List Objects) Version 1.
 // --------------------------
 // This implementation of the GET operation returns some or all (up to 10000)
@@ -343,15 +332,6 @@ func (api objectAPIHandlers) ListObjectsV1Handler(w http.ResponseWriter, r *http
 		return
 	}
 
-	// Forward the request using Source IP or bucket
-	forwardStr := handlers.GetSourceIPFromHeaders(r)
-	if forwardStr == "" {
-		forwardStr = bucket
-	}
-	if proxyRequestByStringHash(ctx, w, r, forwardStr) {
-		return
-	}
-
 	listObjects := objectAPI.ListObjects
 
 	// Inititate a list objects operation based on the input params.

cmd/bucket-replication.go

@@ -20,8 +20,9 @@ import (
 	"context"
 	"fmt"
 	"net/http"
-	"runtime"
+	"reflect"
 	"strings"
+	"sync"
 	"time"
 
 	minio "github.com/minio/minio-go/v7"
@@ -169,14 +170,8 @@ func hasReplicationRules(ctx context.Context, bucket string, objects []ObjectToD
 }
 
 // isStandardHeader returns true if header is a supported header and not a custom header
-func isStandardHeader(headerKey string) bool {
-	key := strings.ToLower(headerKey)
-	for _, header := range standardHeaders {
-		if strings.ToLower(header) == key {
-			return true
-		}
-	}
-	return false
+func isStandardHeader(matchHeaderKey string) bool {
+	return equals(matchHeaderKey, standardHeaders...)
 }
 
 // returns whether object version is a deletemarker and if object qualifies for replication
@@ -185,6 +180,14 @@ func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelet
 	if err != nil || rcfg == nil {
 		return false, false, sync
 	}
+	opts := replication.ObjectOpts{
+		Name:         dobj.ObjectName,
+		SSEC:         crypto.SSEC.IsEncrypted(oi.UserDefined),
+		UserTags:     oi.UserTags,
+		DeleteMarker: oi.DeleteMarker,
+		VersionID:    dobj.VersionID,
+	}
+	replicate = rcfg.Replicate(opts)
 	// when incoming delete is removal of a delete marker( a.k.a versioned delete),
 	// GetObjectInfo returns extra information even though it returns errFileNotFound
 	if gerr != nil {
@@ -193,10 +196,12 @@ func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelet
 		case replication.Pending, replication.Completed, replication.Failed:
 			validReplStatus = true
 		}
-		if oi.DeleteMarker && validReplStatus {
+		if oi.DeleteMarker && (validReplStatus || replicate) {
 			return oi.DeleteMarker, true, sync
 		}
-		return oi.DeleteMarker, false, sync
+		// can be the case that other cluster is down and duplicate `mc rm --vid`
+		// is issued - this still needs to be replicated back to the other target
+		return oi.DeleteMarker, oi.VersionPurgeStatus == Pending || oi.VersionPurgeStatus == Failed, sync
 	}
 	tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, rcfg.RoleArn)
 	// the target online status should not be used here while deciding
@@ -204,14 +209,7 @@ func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelet
 	if tgt == nil {
 		return oi.DeleteMarker, false, false
 	}
-	opts := replication.ObjectOpts{
-		Name:         dobj.ObjectName,
-		SSEC:         crypto.SSEC.IsEncrypted(oi.UserDefined),
-		UserTags:     oi.UserTags,
-		DeleteMarker: oi.DeleteMarker,
-		VersionID:    dobj.VersionID,
-	}
-	return oi.DeleteMarker, rcfg.Replicate(opts), tgt.replicateSync
+	return oi.DeleteMarker, replicate, tgt.replicateSync
 }
 
 // replicate deletes to the designated replication target if replication configuration
@@ -226,26 +224,52 @@ func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelet
 // on target.
 func replicateDelete(ctx context.Context, dobj DeletedObjectVersionInfo, objectAPI ObjectLayer) {
 	bucket := dobj.Bucket
-	rcfg, err := getReplicationConfig(ctx, bucket)
-	if err != nil || rcfg == nil {
-		logger.LogIf(ctx, err)
-		return
-	}
-	tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, rcfg.RoleArn)
-	if tgt == nil {
-		logger.LogIf(ctx, fmt.Errorf("failed to get target for bucket:%s arn:%s", bucket, rcfg.RoleArn))
-		return
-	}
 	versionID := dobj.DeleteMarkerVersionID
 	if versionID == "" {
 		versionID = dobj.VersionID
 	}
+
+	rcfg, err := getReplicationConfig(ctx, bucket)
+	if err != nil || rcfg == nil {
+		logger.LogIf(ctx, err)
+		sendEvent(eventArgs{
+			BucketName: bucket,
+			Object: ObjectInfo{
+				Bucket:       bucket,
+				Name:         dobj.ObjectName,
+				VersionID:    versionID,
+				DeleteMarker: dobj.DeleteMarker,
+			},
+			Host:      "Internal: [Replication]",
+			EventName: event.ObjectReplicationNotTracked,
+		})
+		return
+	}
+
+	tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, rcfg.RoleArn)
+	if tgt == nil {
+		logger.LogIf(ctx, fmt.Errorf("failed to get target for bucket:%s arn:%s", bucket, rcfg.RoleArn))
+		sendEvent(eventArgs{
+			BucketName: bucket,
+			Object: ObjectInfo{
+				Bucket:       bucket,
+				Name:         dobj.ObjectName,
+				VersionID:    versionID,
+				DeleteMarker: dobj.DeleteMarker,
+			},
+			Host:      "Internal: [Replication]",
+			EventName: event.ObjectReplicationNotTracked,
+		})
+		return
+	}
+
 	rmErr := tgt.RemoveObject(ctx, rcfg.GetDestination().Bucket, dobj.ObjectName, miniogo.RemoveObjectOptions{
 		VersionID: versionID,
 		Internal: miniogo.AdvancedRemoveOptions{
 			ReplicationDeleteMarker: dobj.DeleteMarkerVersionID != "",
 			ReplicationMTime:        dobj.DeleteMarkerMTime.Time,
 			ReplicationStatus:       miniogo.ReplicationStatusReplica,
+			ReplicationRequest:      true, // always set this to distinguish between `mc mirror` replication and serverside
 		},
 	})
 
@@ -258,6 +282,7 @@ func replicateDelete(ctx context.Context, dobj DeletedObjectVersionInfo, objectA
 		} else {
 			versionPurgeStatus = Failed
 		}
+		logger.LogIf(ctx, fmt.Errorf("Unable to replicate delete marker to %s/%s(%s): %s", rcfg.GetDestination().Bucket, dobj.ObjectName, versionID, rmErr))
 	} else {
 		if dobj.VersionID == "" {
 			replicationStatus = string(replication.Completed)
@@ -272,66 +297,102 @@ func replicateDelete(ctx context.Context, dobj DeletedObjectVersionInfo, objectA
 	}
 
 	// Update metadata on the delete marker or purge permanent delete if replication success.
-	objInfo, err := objectAPI.DeleteObject(ctx, bucket, dobj.ObjectName, ObjectOptions{
+	dobjInfo, err := objectAPI.DeleteObject(ctx, bucket, dobj.ObjectName, ObjectOptions{
 		VersionID:                     versionID,
-		DeleteMarker:                  dobj.DeleteMarker,
 		DeleteMarkerReplicationStatus: replicationStatus,
-		Versioned:                     globalBucketVersioningSys.Enabled(bucket),
 		VersionPurgeStatus:            versionPurgeStatus,
+		Versioned:                     globalBucketVersioningSys.Enabled(bucket),
 		VersionSuspended:              globalBucketVersioningSys.Suspended(bucket),
 	})
-	if err != nil {
-		logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s/%s %s: %w", bucket, dobj.ObjectName, dobj.VersionID, err))
+	if err != nil && !isErrVersionNotFound(err) { // VersionNotFound would be reported by pool that object version is missing on.
+		logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s/%s(%s): %s", bucket, dobj.ObjectName, versionID, err))
+		sendEvent(eventArgs{
+			BucketName: bucket,
+			Object: ObjectInfo{
+				Bucket:       bucket,
+				Name:         dobj.ObjectName,
+				VersionID:    versionID,
+				DeleteMarker: dobj.DeleteMarker,
+			},
+			Host:      "Internal: [Replication]",
+			EventName: eventName,
+		})
+	} else {
+		sendEvent(eventArgs{
+			BucketName: bucket,
+			Object:     dobjInfo,
+			Host:       "Internal: [Replication]",
+			EventName:  eventName,
+		})
 	}
-
-	sendEvent(eventArgs{
-		BucketName: bucket,
-		Object:     objInfo,
-		Host:       "Internal: [Replication]",
-		EventName:  eventName,
-	})
 }
 
 func getCopyObjMetadata(oi ObjectInfo, dest replication.Destination) map[string]string {
 	meta := make(map[string]string, len(oi.UserDefined))
 	for k, v := range oi.UserDefined {
-		if k == xhttp.AmzBucketReplicationStatus {
-			continue
-		}
 		if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
 			continue
 		}
+
+		if equals(k, xhttp.AmzBucketReplicationStatus) {
+			continue
+		}
+
+		// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
+		if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
+			continue
+		}
+
 		meta[k] = v
 	}
+
 	if oi.ContentEncoding != "" {
 		meta[xhttp.ContentEncoding] = oi.ContentEncoding
 	}
+
 	if oi.ContentType != "" {
 		meta[xhttp.ContentType] = oi.ContentType
 	}
-	tag, err := tags.ParseObjectTags(oi.UserTags)
-	if err != nil {
-		return nil
-	}
-	if tag != nil {
-		meta[xhttp.AmzObjectTagging] = tag.String()
+
+	if oi.UserTags != "" {
+		meta[xhttp.AmzObjectTagging] = oi.UserTags
 		meta[xhttp.AmzTagDirective] = "REPLACE"
 	}
+
 	sc := dest.StorageClass
 	if sc == "" {
 		sc = oi.StorageClass
 	}
-	meta[xhttp.AmzStorageClass] = sc
-	if oi.UserTags != "" {
-		meta[xhttp.AmzObjectTagging] = oi.UserTags
+	if sc != "" {
+		meta[xhttp.AmzStorageClass] = sc
 	}
-	meta[xhttp.MinIOSourceMTime] = oi.ModTime.Format(time.RFC3339Nano)
 	meta[xhttp.MinIOSourceETag] = oi.ETag
+	meta[xhttp.MinIOSourceMTime] = oi.ModTime.Format(time.RFC3339Nano)
 	meta[xhttp.AmzBucketReplicationStatus] = replication.Replica.String()
 	return meta
 }
 
-func putReplicationOpts(ctx context.Context, dest replication.Destination, objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions) {
+type caseInsensitiveMap map[string]string
+
+// Lookup map entry case insensitively.
+func (m caseInsensitiveMap) Lookup(key string) (string, bool) {
+	if len(m) == 0 {
+		return "", false
+	}
+	for _, k := range []string{
+		key,
+		strings.ToLower(key),
+		http.CanonicalHeaderKey(key),
+	} {
+		v, ok := m[k]
+		if ok {
+			return v, ok
+		}
+	}
+	return "", false
+}
+
+func putReplicationOpts(ctx context.Context, dest replication.Destination, objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions, err error) {
 	meta := make(map[string]string)
 	for k, v := range objInfo.UserDefined {
 		if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
@@ -342,54 +403,58 @@ func putReplicationOpts(ctx context.Context, dest replication.Destination, objIn
 		}
 		meta[k] = v
 	}
-	tag, err := tags.ParseObjectTags(objInfo.UserTags)
-	if err != nil {
-		return
-	}
+
 	sc := dest.StorageClass
 	if sc == "" {
 		sc = objInfo.StorageClass
 	}
 	putOpts = miniogo.PutObjectOptions{
 		UserMetadata:    meta,
-		UserTags:        tag.ToMap(),
 		ContentType:     objInfo.ContentType,
 		ContentEncoding: objInfo.ContentEncoding,
 		StorageClass:    sc,
 		Internal: miniogo.AdvancedPutOptions{
-			SourceVersionID:   objInfo.VersionID,
-			ReplicationStatus: miniogo.ReplicationStatusReplica,
-			SourceMTime:       objInfo.ModTime,
-			SourceETag:        objInfo.ETag,
+			SourceVersionID:    objInfo.VersionID,
+			ReplicationStatus:  miniogo.ReplicationStatusReplica,
+			SourceMTime:        objInfo.ModTime,
+			SourceETag:         objInfo.ETag,
+			ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
 		},
 	}
-	if lang, ok := objInfo.UserDefined[xhttp.ContentLanguage]; ok {
+	if objInfo.UserTags != "" {
+		tag, _ := tags.ParseObjectTags(objInfo.UserTags)
+		if tag != nil {
+			putOpts.UserTags = tag.ToMap()
+		}
+	}
+
+	lkMap := caseInsensitiveMap(objInfo.UserDefined)
+	if lang, ok := lkMap.Lookup(xhttp.ContentLanguage); ok {
 		putOpts.ContentLanguage = lang
 	}
-	if disp, ok := objInfo.UserDefined[xhttp.ContentDisposition]; ok {
+	if disp, ok := lkMap.Lookup(xhttp.ContentDisposition); ok {
 		putOpts.ContentDisposition = disp
 	}
-	if cc, ok := objInfo.UserDefined[xhttp.CacheControl]; ok {
+	if cc, ok := lkMap.Lookup(xhttp.CacheControl); ok {
 		putOpts.CacheControl = cc
 	}
-	if mode, ok := objInfo.UserDefined[xhttp.AmzObjectLockMode]; ok {
+	if mode, ok := lkMap.Lookup(xhttp.AmzObjectLockMode); ok {
 		rmode := miniogo.RetentionMode(mode)
 		putOpts.Mode = rmode
 	}
-	if retainDateStr, ok := objInfo.UserDefined[xhttp.AmzObjectLockRetainUntilDate]; ok {
-		rdate, err := time.Parse(time.RFC3339Nano, retainDateStr)
+	if retainDateStr, ok := lkMap.Lookup(xhttp.AmzObjectLockRetainUntilDate); ok {
+		rdate, err := time.Parse(time.RFC3339, retainDateStr)
 		if err != nil {
-			return
+			return putOpts, err
 		}
 		putOpts.RetainUntilDate = rdate
 	}
-	if lhold, ok := objInfo.UserDefined[xhttp.AmzObjectLockLegalHold]; ok {
+	if lhold, ok := lkMap.Lookup(xhttp.AmzObjectLockLegalHold); ok {
 		putOpts.LegalHold = miniogo.LegalHoldStatus(lhold)
 	}
 	if crypto.S3.IsEncrypted(objInfo.UserDefined) {
 		putOpts.ServerSideEncryption = encrypt.NewSSE()
 	}
-
 	return
 }
 
@@ -401,6 +466,16 @@ const (
 	replicateAll      replicationAction = "all"
 )
 
+// matches k1 with all keys, returns 'true' if one of them matches
+func equals(k1 string, keys ...string) bool {
+	for _, k2 := range keys {
+		if strings.ToLower(k1) == strings.ToLower(k2) {
+			return true
+		}
+	}
+	return false
+}
+
 // returns replicationAction by comparing metadata between source and target
 func getReplicationAction(oi1 ObjectInfo, oi2 minio.ObjectInfo) replicationAction {
 	// needs full replication
@@ -408,83 +483,153 @@ func getReplicationAction(oi1 ObjectInfo, oi2 minio.ObjectInfo) replicationActio
 		oi1.VersionID != oi2.VersionID ||
 		oi1.Size != oi2.Size ||
 		oi1.DeleteMarker != oi2.IsDeleteMarker ||
-		!oi1.ModTime.Equal(oi2.LastModified) {
+		oi1.ModTime.Unix() != oi2.LastModified.Unix() {
 		return replicateAll
 	}
+
 	if oi1.ContentType != oi2.ContentType {
 		return replicateMetadata
 	}
+
 	if oi1.ContentEncoding != "" {
 		enc, ok := oi2.Metadata[xhttp.ContentEncoding]
-		if !ok || strings.Join(enc, "") != oi1.ContentEncoding {
+		if !ok {
+			enc, ok = oi2.Metadata[strings.ToLower(xhttp.ContentEncoding)]
+			if !ok {
+				return replicateMetadata
+			}
+		}
+		if strings.Join(enc, ",") != oi1.ContentEncoding {
 			return replicateMetadata
 		}
 	}
+
+	t, _ := tags.ParseObjectTags(oi1.UserTags)
+	if !reflect.DeepEqual(oi2.UserTags, t.ToMap()) {
+		return replicateMetadata
+	}
+
+	// Compare only necessary headers
+	compareKeys := []string{
+		"Expires",
+		"Cache-Control",
+		"Content-Language",
+		"Content-Disposition",
+		"X-Amz-Object-Lock-Mode",
+		"X-Amz-Object-Lock-Retain-Until-Date",
+		"X-Amz-Object-Lock-Legal-Hold",
+		"X-Amz-Website-Redirect-Location",
+		"X-Amz-Meta-",
+	}
+
 	// compare metadata on both maps to see if meta is identical
-	for k1, v1 := range oi1.UserDefined {
-		if v2, ok := oi2.UserMetadata[k1]; ok && v1 == v2 {
-			continue
+	compareMeta1 := make(map[string]string)
+	for k, v := range oi1.UserDefined {
+		var found bool
+		for _, prefix := range compareKeys {
+			if !strings.HasPrefix(strings.ToLower(k), strings.ToLower(prefix)) {
+				continue
+			}
+			found = true
+			break
 		}
-		if v2, ok := oi2.Metadata[k1]; ok && v1 == strings.Join(v2, "") {
-			continue
+		if found {
+			compareMeta1[strings.ToLower(k)] = v
 		}
+	}
+
+	compareMeta2 := make(map[string]string)
+	for k, v := range oi2.Metadata {
+		var found bool
+		for _, prefix := range compareKeys {
+			if !strings.HasPrefix(strings.ToLower(k), strings.ToLower(prefix)) {
+				continue
+			}
+			found = true
+			break
+		}
+		if found {
+			compareMeta2[strings.ToLower(k)] = strings.Join(v, ",")
+		}
+	}
+
+	if !reflect.DeepEqual(compareMeta1, compareMeta2) {
 		return replicateMetadata
 	}
-	for k1, v1 := range oi2.UserMetadata {
-		if v2, ok := oi1.UserDefined[k1]; !ok || v1 != v2 {
-			return replicateMetadata
-		}
-	}
-	for k1, v1slc := range oi2.Metadata {
-		v1 := strings.Join(v1slc, "")
-		if k1 == xhttp.ContentEncoding { //already compared
-			continue
-		}
-		if v2, ok := oi1.UserDefined[k1]; !ok || v1 != v2 {
-			return replicateMetadata
-		}
-	}
-	t, _ := tags.MapToObjectTags(oi2.UserTags)
-	if t.String() != oi1.UserTags {
-		return replicateMetadata
-	}
+
 	return replicateNone
 }
 
 // replicateObject replicates the specified version of the object to destination bucket
 // The source object is then updated to reflect the replication status.
 func replicateObject(ctx context.Context, objInfo ObjectInfo, objectAPI ObjectLayer) {
+	z, ok := objectAPI.(*erasureServerPools)
+	if !ok {
+		return
+	}
+
 	bucket := objInfo.Bucket
 	object := objInfo.Name
 
 	cfg, err := getReplicationConfig(ctx, bucket)
 	if err != nil {
 		logger.LogIf(ctx, err)
+		sendEvent(eventArgs{
+			EventName:  event.ObjectReplicationNotTracked,
+			BucketName: bucket,
+			Object:     objInfo,
+			Host:       "Internal: [Replication]",
+		})
 		return
 	}
 	tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, cfg.RoleArn)
 	if tgt == nil {
 		logger.LogIf(ctx, fmt.Errorf("failed to get target for bucket:%s arn:%s", bucket, cfg.RoleArn))
+		sendEvent(eventArgs{
+			EventName:  event.ObjectReplicationNotTracked,
+			BucketName: bucket,
+			Object:     objInfo,
+			Host:       "Internal: [Replication]",
+		})
 		return
 	}
 	gr, err := objectAPI.GetObjectNInfo(ctx, bucket, object, nil, http.Header{}, readLock, ObjectOptions{
 		VersionID: objInfo.VersionID,
 	})
 	if err != nil {
+		sendEvent(eventArgs{
+			EventName:  event.ObjectReplicationNotTracked,
+			BucketName: bucket,
+			Object:     objInfo,
+			Host:       "Internal: [Replication]",
+		})
 		logger.LogIf(ctx, err)
 		return
 	}
+	defer gr.Close() // hold read lock for entire transaction
+
 	objInfo = gr.ObjInfo
 	size, err := objInfo.GetActualSize()
 	if err != nil {
 		logger.LogIf(ctx, err)
-		gr.Close()
+		sendEvent(eventArgs{
+			EventName:  event.ObjectReplicationNotTracked,
+			BucketName: bucket,
+			Object:     objInfo,
+			Host:       "Internal: [Replication]",
+		})
 		return
 	}
 
 	dest := cfg.GetDestination()
 	if dest.Bucket == "" {
-		gr.Close()
+		logger.LogIf(ctx, fmt.Errorf("Unable to replicate object %s(%s), bucket is empty", objInfo.Name, objInfo.VersionID))
+		sendEvent(eventArgs{
+			EventName:  event.ObjectReplicationNotTracked,
+			BucketName: bucket,
+			Object:     objInfo,
+			Host:       "Internal: [Replication]",
+		})
 		return
 	}
 
@@ -497,31 +642,54 @@ func replicateObject(ctx context.Context, objInfo ObjectInfo, objectAPI ObjectLa
 	if err == nil {
 		rtype = getReplicationAction(objInfo, oi)
 		if rtype == replicateNone {
-			gr.Close()
 			// object with same VersionID already exists, replication kicked off by
 			// PutObject might have completed.
 			return
 		}
 	}
 	replicationStatus := replication.Completed
+	// use core client to avoid doing multipart on PUT
+	c := &miniogo.Core{Client: tgt.Client}
 	if rtype != replicateAll {
-		gr.Close()
 		// replicate metadata for object tagging/copy with metadata replacement
-		dstOpts := miniogo.PutObjectOptions{Internal: miniogo.AdvancedPutOptions{SourceVersionID: objInfo.VersionID}}
-		c := &miniogo.Core{Client: tgt.Client}
-		_, err = c.CopyObject(ctx, dest.Bucket, object, dest.Bucket, object, getCopyObjMetadata(objInfo, dest), dstOpts)
-		if err != nil {
+		srcOpts := miniogo.CopySrcOptions{
+			Bucket:    dest.Bucket,
+			Object:    object,
+			VersionID: objInfo.VersionID}
+		dstOpts := miniogo.PutObjectOptions{
+			Internal: miniogo.AdvancedPutOptions{
+				SourceVersionID:    objInfo.VersionID,
+				ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
+			}}
+		if _, err = c.CopyObject(ctx, dest.Bucket, object, dest.Bucket, object, getCopyObjMetadata(objInfo, dest), srcOpts, dstOpts); err != nil {
 			replicationStatus = replication.Failed
+			logger.LogIf(ctx, fmt.Errorf("Unable to replicate metadata for object %s/%s(%s): %s", bucket, objInfo.Name, objInfo.VersionID, err))
 		}
 	} else {
 		target, err := globalBucketMetadataSys.GetBucketTarget(bucket, cfg.RoleArn)
 		if err != nil {
 			logger.LogIf(ctx, fmt.Errorf("failed to get target for replication bucket:%s cfg:%s err:%s", bucket, cfg.RoleArn, err))
-			gr.Close()
+			sendEvent(eventArgs{
+				EventName:  event.ObjectReplicationNotTracked,
+				BucketName: bucket,
+				Object:     objInfo,
+				Host:       "Internal: [Replication]",
+			})
+			return
+		}
+
+		putOpts, err := putReplicationOpts(ctx, dest, objInfo)
+		if err != nil {
+			logger.LogIf(ctx, fmt.Errorf("failed to get target for replication bucket:%s cfg:%s err:%w", bucket, cfg.RoleArn, err))
+			sendEvent(eventArgs{
+				EventName:  event.ObjectReplicationNotTracked,
+				BucketName: bucket,
+				Object:     objInfo,
+				Host:       "Internal: [Replication]",
+			})
 			return
 		}
 
-		putOpts := putReplicationOpts(ctx, dest, objInfo)
 		// Setup bandwidth throttling
 		peers, _ := globalEndpoints.peers()
 		totalNodesCount := len(peers)
@@ -536,11 +704,11 @@ func replicateObject(ctx context.Context, objInfo ObjectInfo, objectAPI ObjectLa
 
 		// r takes over closing gr.
 		r := bandwidth.NewMonitoredReader(ctx, globalBucketMonitor, objInfo.Bucket, objInfo.Name, gr, headerSize, b, target.BandwidthLimit)
-		_, err = tgt.PutObject(ctx, dest.Bucket, object, r, size, putOpts)
-		if err != nil {
+		if _, err = c.PutObject(ctx, dest.Bucket, object, r, size, "", "", putOpts); err != nil {
 			replicationStatus = replication.Failed
+			logger.LogIf(ctx, fmt.Errorf("Unable to replicate for object %s/%s(%s): %w", bucket, objInfo.Name, objInfo.VersionID, err))
 		}
-		r.Close()
+		defer r.Close()
 	}
 
 	objInfo.UserDefined[xhttp.AmzBucketReplicationStatus] = replicationStatus.String()
@@ -549,7 +717,6 @@ func replicateObject(ctx context.Context, objInfo ObjectInfo, objectAPI ObjectLa
 	}
 
 	// FIXME: add support for missing replication events
-	// - event.ObjectReplicationNotTracked
 	// - event.ObjectReplicationMissedThreshold
 	// - event.ObjectReplicationReplicatedAfterThreshold
 	var eventName = event.ObjectReplicationComplete
@@ -557,16 +724,17 @@ func replicateObject(ctx context.Context, objInfo ObjectInfo, objectAPI ObjectLa
 		eventName = event.ObjectReplicationFailed
 	}
 
-	objInfo.metadataOnly = true // Perform only metadata updates.
-	objInfo, err = objectAPI.CopyObject(ctx, bucket, object, bucket, object, objInfo, ObjectOptions{
-		VersionID: objInfo.VersionID,
-	}, ObjectOptions{
-		VersionID: objInfo.VersionID,
-	})
+	// This lower level implementation is necessary to avoid write locks from CopyObject.
+	poolIdx, err := z.getPoolIdx(ctx, bucket, object, objInfo.Size)
 	if err != nil {
-		logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s: %s", objInfo.VersionID, err))
+		logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s/%s(%s): %w", bucket, objInfo.Name, objInfo.VersionID, err))
+	} else {
+		if err = z.serverPools[poolIdx].getHashedSet(object).updateObjectMeta(ctx, bucket, object, objInfo.UserDefined, ObjectOptions{
+			VersionID: objInfo.VersionID,
+		}); err != nil {
+			logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s/%s(%s): %w", bucket, objInfo.Name, objInfo.VersionID, err))
+		}
 	}
-
 	sendEvent(eventArgs{
 		EventName:  eventName,
 		BucketName: bucket,
@@ -603,91 +771,102 @@ type DeletedObjectVersionInfo struct {
 	DeletedObject
 	Bucket string
 }
-type replicationState struct {
-	// add future metrics here
-	replicaCh       chan ObjectInfo
-	replicaDeleteCh chan DeletedObjectVersionInfo
-}
-
-func (r *replicationState) queueReplicaTask(oi ObjectInfo) {
-	if r == nil {
-		return
-	}
-	select {
-	case r.replicaCh <- oi:
-	default:
-	}
-}
-
-func (r *replicationState) queueReplicaDeleteTask(doi DeletedObjectVersionInfo) {
-	if r == nil {
-		return
-	}
-	select {
-	case r.replicaDeleteCh <- doi:
-	default:
-	}
-}
 
 var (
-	globalReplicationState *replicationState
-	// TODO: currently keeping it conservative
-	// but eventually can be tuned in future,
-	// take only half the CPUs for replication
-	// conservatively.
-	globalReplicationConcurrent = runtime.GOMAXPROCS(0) / 2
+	globalReplicationPool *ReplicationPool
 )
 
-func newReplicationState() *replicationState {
-
-	// fix minimum concurrent replication to 1 for single CPU setup
-	if globalReplicationConcurrent == 0 {
-		globalReplicationConcurrent = 1
-	}
-	rs := &replicationState{
-		replicaCh:       make(chan ObjectInfo, 10000),
-		replicaDeleteCh: make(chan DeletedObjectVersionInfo, 10000),
-	}
-	go func() {
-		<-GlobalContext.Done()
-		close(rs.replicaCh)
-		close(rs.replicaDeleteCh)
-	}()
-	return rs
+// ReplicationPool describes replication pool
+type ReplicationPool struct {
+	mu              sync.Mutex
+	size            int
+	replicaCh       chan ObjectInfo
+	replicaDeleteCh chan DeletedObjectVersionInfo
+	killCh          chan struct{}
+	wg              sync.WaitGroup
+	ctx             context.Context
+	objLayer        ObjectLayer
 }
 
-// addWorker creates a new worker to process tasks
-func (r *replicationState) addWorker(ctx context.Context, objectAPI ObjectLayer) {
-	// Add a new worker.
+// NewReplicationPool creates a pool of replication workers of specified size
+func NewReplicationPool(ctx context.Context, o ObjectLayer, sz int) *ReplicationPool {
+	pool := &ReplicationPool{
+		replicaCh:       make(chan ObjectInfo, 10000),
+		replicaDeleteCh: make(chan DeletedObjectVersionInfo, 10000),
+		ctx:             ctx,
+		objLayer:        o,
+	}
 	go func() {
-		for {
-			select {
-			case <-ctx.Done():
-				return
-			case oi, ok := <-r.replicaCh:
-				if !ok {
-					return
-				}
-				replicateObject(ctx, oi, objectAPI)
-			case doi, ok := <-r.replicaDeleteCh:
-				if !ok {
-					return
-				}
-				replicateDelete(ctx, doi, objectAPI)
-			}
-		}
+		<-ctx.Done()
+		close(pool.replicaCh)
+		close(pool.replicaDeleteCh)
 	}()
+	pool.Resize(sz)
+	return pool
+}
+
+// AddWorker adds a replication worker to the pool
+func (p *ReplicationPool) AddWorker() {
+	defer p.wg.Done()
+	for {
+		select {
+		case <-p.ctx.Done():
+			return
+		case oi, ok := <-p.replicaCh:
+			if !ok {
+				return
+			}
+			replicateObject(p.ctx, oi, p.objLayer)
+		case doi, ok := <-p.replicaDeleteCh:
+			if !ok {
+				return
+			}
+			replicateDelete(p.ctx, doi, p.objLayer)
+		case <-p.killCh:
+			return
+		}
+	}
+
+}
+
+//Resize replication pool to new size
+func (p *ReplicationPool) Resize(n int) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	for p.size < n {
+		p.size++
+		p.wg.Add(1)
+		go p.AddWorker()
+	}
+	for p.size > n {
+		p.size--
+		go func() { p.killCh <- struct{}{} }()
+	}
+}
+
+func (p *ReplicationPool) queueReplicaTask(oi ObjectInfo) {
+	if p == nil {
+		return
+	}
+	select {
+	case p.replicaCh <- oi:
+	default:
+	}
+}
+
+func (p *ReplicationPool) queueReplicaDeleteTask(doi DeletedObjectVersionInfo) {
+	if p == nil {
+		return
+	}
+	select {
+	case p.replicaDeleteCh <- doi:
+	default:
+	}
 }
 
 func initBackgroundReplication(ctx context.Context, objectAPI ObjectLayer) {
-	if globalReplicationState == nil {
-		return
-	}
-
-	// Start with globalReplicationConcurrent.
-	for i := 0; i < globalReplicationConcurrent; i++ {
-		globalReplicationState.addWorker(ctx, objectAPI)
-	}
+	globalReplicationPool = NewReplicationPool(ctx, objectAPI, globalAPIConfig.getReplicationWorkers())
 }
 
 // get Reader from replication target if active-active replication is in place and
@@ -714,8 +893,11 @@ func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs
 			return nil, false
 		}
 	}
+	// Make sure to match ETag when proxying.
+	if err = gopts.SetMatchETag(oi.ETag); err != nil {
+		return nil, false
+	}
 	c := miniogo.Core{Client: tgt.Client}
-
 	obj, _, _, err := c.GetObject(ctx, bucket, object, gopts)
 	if err != nil {
 		return nil, false
@@ -726,6 +908,7 @@ func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs
 	if err != nil {
 		return nil, false
 	}
+	reader.ObjInfo = oi.Clone()
 	return reader, true
 }
 
@@ -781,6 +964,7 @@ func proxyHeadToRepTarget(ctx context.Context, bucket, object string, opts Objec
 	if err != nil {
 		return nil, oi, false, err
 	}
+
 	tags, _ := tags.MapToObjectTags(objInfo.UserTags)
 	oi = ObjectInfo{
 		Bucket:            bucket,
@@ -795,12 +979,18 @@ func proxyHeadToRepTarget(ctx context.Context, bucket, object string, opts Objec
 		Expires:           objInfo.Expires,
 		StorageClass:      objInfo.StorageClass,
 		ReplicationStatus: replication.StatusType(objInfo.ReplicationStatus),
-		UserDefined:       cloneMSS(objInfo.UserMetadata),
 		UserTags:          tags.String(),
 	}
-	if ce, ok := oi.UserDefined[xhttp.ContentEncoding]; ok {
+	oi.UserDefined = make(map[string]string, len(objInfo.Metadata))
+	for k, v := range objInfo.Metadata {
+		oi.UserDefined[k] = v[0]
+	}
+	ce, ok := oi.UserDefined[xhttp.ContentEncoding]
+	if !ok {
+		ce, ok = oi.UserDefined[strings.ToLower(xhttp.ContentEncoding)]
+	}
+	if ok {
 		oi.ContentEncoding = ce
-		delete(oi.UserDefined, xhttp.ContentEncoding)
 	}
 	return tgt, oi, true, nil
 }
@@ -816,7 +1006,7 @@ func scheduleReplication(ctx context.Context, objInfo ObjectInfo, o ObjectLayer,
 	if sync {
 		replicateObject(ctx, objInfo, o)
 	} else {
-		globalReplicationState.queueReplicaTask(objInfo)
+		globalReplicationPool.queueReplicaTask(objInfo)
 	}
 }
 
@@ -824,6 +1014,6 @@ func scheduleReplicationDelete(ctx context.Context, dv DeletedObjectVersionInfo,
 	if sync {
 		replicateDelete(ctx, dv, o)
 	} else {
-		globalReplicationState.queueReplicaDeleteTask(dv)
+		globalReplicationPool.queueReplicaDeleteTask(dv)
 	}
 }

cmd/bucket-targets.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"context"
+	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
 	"net/http"
@@ -32,7 +33,6 @@ import (
 	"github.com/minio/minio/cmd/crypto"
 	"github.com/minio/minio/pkg/bucket/versioning"
 	"github.com/minio/minio/pkg/madmin"
-	sha256 "github.com/minio/sha256-simd"
 )
 
 const (
@@ -362,6 +362,7 @@ func (sys *BucketTargetSys) getRemoteTargetClient(tcfg *madmin.BucketTarget) (*T
 	api, err := minio.New(tcfg.Endpoint, &miniogo.Options{
 		Creds:     creds,
 		Secure:    tcfg.Secure,
+		Region:    tcfg.Region,
 		Transport: getRemoteTargetInstanceTransport,
 	})
 	if err != nil {

cmd/common-main.go

@@ -50,10 +50,14 @@ import (
 var serverDebugLog = env.Get("_MINIO_SERVER_DEBUG", config.EnableOff) == config.EnableOn
 
 func init() {
+	rand.Seed(time.Now().UTC().UnixNano())
+
 	logger.Init(GOPATH, GOROOT)
 	logger.RegisterError(config.FmtError)
 
-	rand.Seed(time.Now().UTC().UnixNano())
+	// Inject into config package.
+	config.Logger.Info = logger.Info
+	config.Logger.LogIf = logger.LogIf
 
 	globalDNSCache = xhttp.NewDNSCache(10*time.Second, 10*time.Second, logger.LogOnceIf)
 
@@ -69,7 +73,6 @@ func init() {
 		},
 	})
 
-	globalReplicationState = newReplicationState()
 	globalTransitionState = newTransitionState()
 
 	console.SetColor("Debug", color.New())

cmd/config-common.go

@@ -20,6 +20,8 @@ import (
 	"bytes"
 	"context"
 	"errors"
+	"io/ioutil"
+	"net/http"
 
 	"github.com/minio/minio/pkg/hash"
 )
@@ -27,9 +29,9 @@ import (
 var errConfigNotFound = errors.New("config file not found")
 
 func readConfig(ctx context.Context, objAPI ObjectLayer, configFile string) ([]byte, error) {
-	var buffer bytes.Buffer
 	// Read entire content by setting size to -1
-	if err := objAPI.GetObject(ctx, minioMetaBucket, configFile, 0, -1, &buffer, "", ObjectOptions{}); err != nil {
+	r, err := objAPI.GetObjectNInfo(ctx, minioMetaBucket, configFile, nil, http.Header{}, readLock, ObjectOptions{})
+	if err != nil {
 		// Treat object not found as config not found.
 		if isErrObjectNotFound(err) {
 			return nil, errConfigNotFound
@@ -37,13 +39,16 @@ func readConfig(ctx context.Context, objAPI ObjectLayer, configFile string) ([]b
 
 		return nil, err
 	}
+	defer r.Close()
 
-	// Return config not found on empty content.
-	if buffer.Len() == 0 {
+	buf, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+	if len(buf) == 0 {
 		return nil, errConfigNotFound
 	}
-
-	return buffer.Bytes(), nil
+	return buf, nil
 }
 
 type objectDeleter interface {
@@ -59,12 +64,12 @@ func deleteConfig(ctx context.Context, objAPI objectDeleter, configFile string)
 }
 
 func saveConfig(ctx context.Context, objAPI ObjectLayer, configFile string, data []byte) error {
-	hashReader, err := hash.NewReader(bytes.NewReader(data), int64(len(data)), "", getSHA256Hash(data), int64(len(data)), globalCLIContext.StrictS3Compat)
+	hashReader, err := hash.NewReader(bytes.NewReader(data), int64(len(data)), "", getSHA256Hash(data), int64(len(data)))
 	if err != nil {
 		return err
 	}
 
-	_, err = objAPI.PutObject(ctx, minioMetaBucket, configFile, NewPutObjReader(hashReader, nil, nil), ObjectOptions{})
+	_, err = objAPI.PutObject(ctx, minioMetaBucket, configFile, NewPutObjReader(hashReader), ObjectOptions{MaxParity: true})
 	return err
 }
 

cmd/config-current.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"context"
+	"crypto/tls"
 	"fmt"
 	"strings"
 	"sync"
@@ -26,7 +27,6 @@ import (
 	"github.com/minio/minio/cmd/config/api"
 	"github.com/minio/minio/cmd/config/cache"
 	"github.com/minio/minio/cmd/config/compress"
-	"github.com/minio/minio/cmd/config/crawler"
 	"github.com/minio/minio/cmd/config/dns"
 	"github.com/minio/minio/cmd/config/etcd"
 	"github.com/minio/minio/cmd/config/heal"
@@ -34,6 +34,7 @@ import (
 	"github.com/minio/minio/cmd/config/identity/openid"
 	"github.com/minio/minio/cmd/config/notify"
 	"github.com/minio/minio/cmd/config/policy/opa"
+	"github.com/minio/minio/cmd/config/scanner"
 	"github.com/minio/minio/cmd/config/storageclass"
 	"github.com/minio/minio/cmd/crypto"
 	xhttp "github.com/minio/minio/cmd/http"
@@ -59,7 +60,7 @@ func initHelp() {
 		config.LoggerWebhookSubSys:  logger.DefaultKVS,
 		config.AuditWebhookSubSys:   logger.DefaultAuditKVS,
 		config.HealSubSys:           heal.DefaultKVS,
-		config.CrawlerSubSys:        crawler.DefaultKVS,
+		config.ScannerSubSys:        scanner.DefaultKVS,
 	}
 	for k, v := range notify.DefaultNotificationKVS {
 		kvs[k] = v
@@ -116,8 +117,8 @@ func initHelp() {
 			Description: "manage object healing frequency and bitrot verification checks",
 		},
 		config.HelpKV{
-			Key:         config.CrawlerSubSys,
-			Description: "manage crawling for usage calculation, lifecycle, healing and more",
+			Key:         config.ScannerSubSys,
+			Description: "manage namespace scanning for usage calculation, lifecycle, healing and more",
 		},
 		config.HelpKV{
 			Key:             config.LoggerWebhookSubSys,
@@ -199,7 +200,7 @@ func initHelp() {
 		config.CacheSubSys:          cache.Help,
 		config.CompressionSubSys:    compress.Help,
 		config.HealSubSys:           heal.Help,
-		config.CrawlerSubSys:        crawler.Help,
+		config.ScannerSubSys:        scanner.Help,
 		config.IdentityOpenIDSubSys: openid.Help,
 		config.IdentityLDAPSubSys:   xldap.Help,
 		config.PolicyOPASubSys:      opa.Help,
@@ -273,11 +274,11 @@ func validateConfig(s config.Config, setDriveCounts []int) error {
 		}
 	}
 
-	if _, err := heal.LookupConfig(s[config.HealSubSys][config.Default]); err != nil {
+	if _, err = heal.LookupConfig(s[config.HealSubSys][config.Default]); err != nil {
 		return err
 	}
 
-	if _, err := crawler.LookupConfig(s[config.CrawlerSubSys][config.Default]); err != nil {
+	if _, err = scanner.LookupConfig(s[config.ScannerSubSys][config.Default]); err != nil {
 		return err
 	}
 
@@ -295,7 +296,10 @@ func validateConfig(s config.Config, setDriveCounts []int) error {
 		}
 	}
 	{
-		kmsCfg, err := crypto.LookupConfig(s, globalCertsCADir.Get(), NewGatewayHTTPTransport())
+		kmsCfg, err := crypto.LookupConfig(s, globalCertsCADir.Get(), newCustomHTTPTransportWithHTTP2(
+			&tls.Config{
+				RootCAs: globalRootCAs,
+			}, defaultDialTimeout)())
 		if err != nil {
 			return err
 		}
@@ -471,7 +475,10 @@ func lookupConfigs(s config.Config, setDriveCounts []int) {
 		}
 	}
 
-	kmsCfg, err := crypto.LookupConfig(s, globalCertsCADir.Get(), NewGatewayHTTPTransport())
+	kmsCfg, err := crypto.LookupConfig(s, globalCertsCADir.Get(), newCustomHTTPTransportWithHTTP2(
+		&tls.Config{
+			RootCAs: globalRootCAs,
+		}, defaultDialTimeout)())
 	if err != nil {
 		logger.LogIf(ctx, fmt.Errorf("Unable to setup KMS config: %w", err))
 	}
@@ -480,11 +487,13 @@ func lookupConfigs(s config.Config, setDriveCounts []int) {
 	if err != nil {
 		logger.LogIf(ctx, fmt.Errorf("Unable to setup KMS with current KMS config: %w", err))
 	}
+	globalAutoEncryption = kmsCfg.AutoEncryption // Enable auto-encryption if enabled
 
-	// Enable auto-encryption if enabled
-	globalAutoEncryption = kmsCfg.AutoEncryption
-	if globalAutoEncryption && !globalIsGateway {
-		logger.LogIf(ctx, fmt.Errorf("%s env is deprecated please migrate to using `mc encrypt` at bucket level", crypto.EnvKMSAutoEncryption))
+	if kmsCfg.Vault.Enabled {
+		const deprecationWarning = `Native Hashicorp Vault support is deprecated and will be removed on 2021-10-01. Please migrate to KES + Hashicorp Vault: https://github.com/minio/kes/wiki/Hashicorp-Vault-Keystore
+Note that native Hashicorp Vault and KES + Hashicorp Vault are not compatible.
+If you need help to migrate smoothly visit: https://min.io/pricing`
+		logger.LogIf(ctx, fmt.Errorf(deprecationWarning))
 	}
 
 	globalOpenIDConfig, err = openid.LookupConfig(s[config.IdentityOpenIDSubSys][config.Default],
@@ -544,7 +553,7 @@ func lookupConfigs(s config.Config, setDriveCounts []int) {
 					http.WithAuthToken(l.AuthToken),
 					http.WithUserAgent(loggerUserAgent),
 					http.WithLogKind(string(logger.All)),
-					http.WithTransport(NewGatewayHTTPTransport()),
+					http.WithTransport(NewGatewayHTTPTransportWithClientCerts(l.ClientCert, l.ClientKey)),
 				),
 			); err != nil {
 				logger.LogIf(ctx, fmt.Errorf("Unable to initialize audit HTTP target: %w", err))
@@ -597,10 +606,10 @@ func applyDynamicConfig(ctx context.Context, objAPI ObjectLayer, s config.Config
 		return fmt.Errorf("Unable to apply heal config: %w", err)
 	}
 
-	// Crawler
-	crawlerCfg, err := crawler.LookupConfig(s[config.CrawlerSubSys][config.Default])
+	// Scanner
+	scannerCfg, err := scanner.LookupConfig(s[config.ScannerSubSys][config.Default])
 	if err != nil {
-		return fmt.Errorf("Unable to apply crawler config: %w", err)
+		return fmt.Errorf("Unable to apply scanner config: %w", err)
 	}
 
 	// Apply configurations.
@@ -615,7 +624,7 @@ func applyDynamicConfig(ctx context.Context, objAPI ObjectLayer, s config.Config
 	globalHealConfig = healCfg
 	globalHealConfigMu.Unlock()
 
-	logger.LogIf(ctx, crawlerSleeper.Update(crawlerCfg.Delay, crawlerCfg.MaxWait))
+	logger.LogIf(ctx, scannerSleeper.Update(scannerCfg.Delay, scannerCfg.MaxWait))
 
 	// Update all dynamic config values in memory.
 	globalServerConfigMu.Lock()

cmd/config/api/api.go

@@ -29,14 +29,14 @@ import (
 
 // API sub-system constants
 const (
-	apiRequestsMax             = "requests_max"
-	apiRequestsDeadline        = "requests_deadline"
-	apiClusterDeadline         = "cluster_deadline"
-	apiCorsAllowOrigin         = "cors_allow_origin"
-	apiRemoteTransportDeadline = "remote_transport_deadline"
-	apiListQuorum              = "list_quorum"
-	apiExtendListCacheLife     = "extend_list_cache_life"
-
+	apiRequestsMax                = "requests_max"
+	apiRequestsDeadline           = "requests_deadline"
+	apiClusterDeadline            = "cluster_deadline"
+	apiCorsAllowOrigin            = "cors_allow_origin"
+	apiRemoteTransportDeadline    = "remote_transport_deadline"
+	apiListQuorum                 = "list_quorum"
+	apiExtendListCacheLife        = "extend_list_cache_life"
+	apiReplicationWorkers         = "replication_workers"
 	EnvAPIRequestsMax             = "MINIO_API_REQUESTS_MAX"
 	EnvAPIRequestsDeadline        = "MINIO_API_REQUESTS_DEADLINE"
 	EnvAPIClusterDeadline         = "MINIO_API_CLUSTER_DEADLINE"
@@ -45,6 +45,7 @@ const (
 	EnvAPIListQuorum              = "MINIO_API_LIST_QUORUM"
 	EnvAPIExtendListCacheLife     = "MINIO_API_EXTEND_LIST_CACHE_LIFE"
 	EnvAPISecureCiphers           = "MINIO_API_SECURE_CIPHERS"
+	EnvAPIReplicationWorkers      = "MINIO_API_REPLICATION_WORKERS"
 )
 
 // Deprecated key and ENVs
@@ -78,12 +79,16 @@ var (
 		},
 		config.KV{
 			Key:   apiListQuorum,
-			Value: "optimal",
+			Value: "strict",
 		},
 		config.KV{
 			Key:   apiExtendListCacheLife,
 			Value: "0s",
 		},
+		config.KV{
+			Key:   apiReplicationWorkers,
+			Value: "100",
+		},
 	}
 )
 
@@ -96,6 +101,7 @@ type Config struct {
 	RemoteTransportDeadline time.Duration `json:"remote_transport_deadline"`
 	ListQuorum              string        `json:"list_strict_quorum"`
 	ExtendListLife          time.Duration `json:"extend_list_cache_life"`
+	ReplicationWorkers      int           `json:"replication_workers"`
 }
 
 // UnmarshalJSON - Validate SS and RRS parity when unmarshalling JSON.
@@ -173,6 +179,15 @@ func LookupConfig(kvs config.KVS) (cfg Config, err error) {
 		return cfg, err
 	}
 
+	replicationWorkers, err := strconv.Atoi(env.Get(EnvAPIReplicationWorkers, kvs.Get(apiReplicationWorkers)))
+	if err != nil {
+		return cfg, err
+	}
+
+	if replicationWorkers <= 0 {
+		return cfg, config.ErrInvalidReplicationWorkersValue(nil).Msg("Minimum number of replication workers should be 1")
+	}
+
 	return Config{
 		RequestsMax:             requestsMax,
 		RequestsDeadline:        requestsDeadline,
@@ -181,5 +196,6 @@ func LookupConfig(kvs config.KVS) (cfg Config, err error) {
 		RemoteTransportDeadline: remoteTransportDeadline,
 		ListQuorum:              listQuorum,
 		ExtendListLife:          listLife,
+		ReplicationWorkers:      replicationWorkers,
 	}, nil
 }

cmd/config/api/help.go

@@ -45,5 +45,11 @@ var (
 			Optional:    true,
 			Type:        "duration",
 		},
+		config.HelpKV{
+			Key:         apiReplicationWorkers,
+			Description: `set the number of replication workers, defaults to 100`,
+			Optional:    true,
+			Type:        "number",
+		},
 	}
 )

cmd/config/cache/help.go

@@ -40,19 +40,13 @@ var (
 		},
 		config.HelpKV{
 			Key:         Exclude,
-			Description: `comma separated wildcard exclusion patterns e.g. "bucket/*.tmp,*.exe"`,
+			Description: `exclude cache for following patterns e.g. "bucket/*.tmp,*.exe"`,
 			Optional:    true,
 			Type:        "csv",
 		},
-		config.HelpKV{
-			Key:         config.Comment,
-			Description: config.DefaultComment,
-			Optional:    true,
-			Type:        "sentence",
-		},
 		config.HelpKV{
 			Key:         After,
-			Description: `minimum accesses before caching an object`,
+			Description: `minimum number of access before caching an object`,
 			Optional:    true,
 			Type:        "number",
 		},
@@ -80,5 +74,11 @@ var (
 			Optional:    true,
 			Type:        "string",
 		},
+		config.HelpKV{
+			Key:         config.Comment,
+			Description: config.DefaultComment,
+			Optional:    true,
+			Type:        "sentence",
+		},
 	}
 )

cmd/config/certs.go

@@ -23,6 +23,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"encoding/pem"
+	"errors"
 	"io/ioutil"
 
 	"github.com/minio/minio/pkg/env"
@@ -113,3 +114,12 @@ func LoadX509KeyPair(certFile, keyFile string) (tls.Certificate, error) {
 	}
 	return cert, nil
 }
+
+// EnsureCertAndKey checks if both client certificate and key paths are provided
+func EnsureCertAndKey(ClientCert, ClientKey string) error {
+	if (ClientCert != "" && ClientKey == "") ||
+		(ClientCert == "" && ClientKey != "") {
+		return errors.New("cert and key must be specified as a pair")
+	}
+	return nil
+}

cmd/config/compress/compress.go

@@ -45,7 +45,7 @@ const (
 
 	// Include-list for compression.
 	DefaultExtensions = ".txt,.log,.csv,.json,.tar,.xml,.bin"
-	DefaultMimeTypes  = "text/*,application/json,application/xml"
+	DefaultMimeTypes  = "text/*,application/json,application/xml,binary/octet-stream"
 )
 
 // DefaultKVS - default KV config for compression settings

cmd/config/config.go

@@ -77,6 +77,7 @@ const (
 	LoggerWebhookSubSys  = "logger_webhook"
 	AuditWebhookSubSys   = "audit_webhook"
 	HealSubSys           = "heal"
+	ScannerSubSys        = "scanner"
 	CrawlerSubSys        = "crawler"
 
 	// Add new constants here if you add new fields to config.
@@ -114,7 +115,7 @@ var SubSystems = set.CreateStringSet(
 	PolicyOPASubSys,
 	IdentityLDAPSubSys,
 	IdentityOpenIDSubSys,
-	CrawlerSubSys,
+	ScannerSubSys,
 	HealSubSys,
 	NotifyAMQPSubSys,
 	NotifyESSubSys,
@@ -132,7 +133,7 @@ var SubSystems = set.CreateStringSet(
 var SubSystemsDynamic = set.CreateStringSet(
 	APISubSys,
 	CompressionSubSys,
-	CrawlerSubSys,
+	ScannerSubSys,
 	HealSubSys,
 )
 
@@ -151,7 +152,7 @@ var SubSystemsSingleTargets = set.CreateStringSet([]string{
 	IdentityLDAPSubSys,
 	IdentityOpenIDSubSys,
 	HealSubSys,
-	CrawlerSubSys,
+	ScannerSubSys,
 }...)
 
 // Constant separators
@@ -462,6 +463,13 @@ func LookupWorm() (bool, error) {
 	return ParseBool(env.Get(EnvWorm, EnableOff))
 }
 
+// Carries all the renamed sub-systems from their
+// previously known names
+var renamedSubsys = map[string]string{
+	CrawlerSubSys: ScannerSubSys,
+	// Add future sub-system renames
+}
+
 // Merge - merges a new config with all the
 // missing values for default configs,
 // returns a config.
@@ -477,9 +485,21 @@ func (c Config) Merge() Config {
 				}
 			}
 			if _, ok := cp[subSys]; !ok {
-				// A config subsystem was removed or server was downgraded.
-				Logger.Info("config: ignoring unknown subsystem config %q\n", subSys)
-				continue
+				rnSubSys, ok := renamedSubsys[subSys]
+				if !ok {
+					// A config subsystem was removed or server was downgraded.
+					Logger.Info("config: ignoring unknown subsystem config %q\n", subSys)
+					continue
+				}
+				// Copy over settings from previous sub-system
+				// to newly renamed sub-system
+				for _, kv := range cp[rnSubSys][Default] {
+					_, ok := c[subSys][tgt].Lookup(kv.Key)
+					if !ok {
+						ckvs.Set(kv.Key, kv.Value)
+					}
+				}
+				subSys = rnSubSys
 			}
 			cp[subSys][tgt] = ckvs
 		}

cmd/config/dns/etcd_dns.go

@@ -79,7 +79,7 @@ func (c *CoreDNS) Get(bucket string) ([]SrvRecord, error) {
 	var srvRecords []SrvRecord
 	for _, domainName := range c.domainNames {
 		key := msg.Path(fmt.Sprintf("%s.%s.", bucket, domainName), c.prefixPath)
-		records, err := c.list(key+etcdPathSeparator, false)
+		records, err := c.list(key, false)
 		if err != nil {
 			return nil, err
 		}

cmd/config/errors.go

@@ -281,4 +281,10 @@ Example 1:
 		"",
 		"Refer to https://docs.min.io/docs/minio-kms-quickstart-guide.html for setting up SSE",
 	)
+
+	ErrInvalidReplicationWorkersValue = newErrFn(
+		"Invalid value for replication workers",
+		"",
+		"MINIO_API_REPLICATION_WORKERS: should be > 0",
+	)
 )

cmd/config/heal/heal.go

@@ -66,7 +66,7 @@ var (
 	Help = config.HelpKVS{
 		config.HelpKV{
 			Key:         Bitrot,
-			Description: `perform bitrot scan on disks when checking objects during crawl`,
+			Description: `perform bitrot scan on disks when checking objects during scanner`,
 			Optional:    true,
 			Type:        "on|off",
 		},

cmd/config/identity/ldap/config.go

@@ -21,13 +21,14 @@ import (
 	"crypto/x509"
 	"errors"
 	"fmt"
+	"math/rand"
 	"net"
 	"strings"
 	"time"
 
+	ldap "github.com/go-ldap/ldap/v3"
 	"github.com/minio/minio/cmd/config"
 	"github.com/minio/minio/pkg/env"
-	ldap "gopkg.in/ldap.v3"
 )
 
 const (
@@ -58,7 +59,6 @@ type Config struct {
 	GroupSearchBaseDistName  string   `json:"groupSearchBaseDN"`
 	GroupSearchBaseDistNames []string `json:"-"`
 	GroupSearchFilter        string   `json:"groupSearchFilter"`
-	GroupNameAttribute       string   `json:"groupNameAttribute"`
 
 	// Lookup bind LDAP service account
 	LookupBindDN       string `json:"lookupBindDN"`
@@ -82,7 +82,6 @@ const (
 	UserDNSearchFilter = "user_dn_search_filter"
 	UsernameFormat     = "username_format"
 	GroupSearchFilter  = "group_search_filter"
-	GroupNameAttribute = "group_name_attribute"
 	GroupSearchBaseDN  = "group_search_base_dn"
 	TLSSkipVerify      = "tls_skip_verify"
 	ServerInsecure     = "server_insecure"
@@ -97,7 +96,6 @@ const (
 	EnvUserDNSearchBaseDN = "MINIO_IDENTITY_LDAP_USER_DN_SEARCH_BASE_DN"
 	EnvUserDNSearchFilter = "MINIO_IDENTITY_LDAP_USER_DN_SEARCH_FILTER"
 	EnvGroupSearchFilter  = "MINIO_IDENTITY_LDAP_GROUP_SEARCH_FILTER"
-	EnvGroupNameAttribute = "MINIO_IDENTITY_LDAP_GROUP_NAME_ATTRIBUTE"
 	EnvGroupSearchBaseDN  = "MINIO_IDENTITY_LDAP_GROUP_SEARCH_BASE_DN"
 	EnvLookupBindDN       = "MINIO_IDENTITY_LDAP_LOOKUP_BIND_DN"
 	EnvLookupBindPassword = "MINIO_IDENTITY_LDAP_LOOKUP_BIND_PASSWORD"
@@ -106,6 +104,7 @@ const (
 var removedKeys = []string{
 	"username_search_filter",
 	"username_search_base_dn",
+	"group_name_attribute",
 }
 
 // DefaultKVS - default config for LDAP config
@@ -131,10 +130,6 @@ var (
 			Key:   GroupSearchFilter,
 			Value: "",
 		},
-		config.KV{
-			Key:   GroupNameAttribute,
-			Value: "",
-		},
 		config.KV{
 			Key:   GroupSearchBaseDN,
 			Value: "",
@@ -180,13 +175,22 @@ func getGroups(conn *ldap.Conn, sreq *ldap.SearchRequest) ([]string, error) {
 	for _, entry := range sres.Entries {
 		// We only queried one attribute,
 		// so we only look up the first one.
-		groups = append(groups, entry.Attributes[0].Values...)
+		groups = append(groups, entry.DN)
 	}
 	return groups, nil
 }
 
 func (l *Config) lookupBind(conn *ldap.Conn) error {
-	return conn.Bind(l.LookupBindDN, l.LookupBindPassword)
+	var err error
+	if l.LookupBindPassword == "" {
+		err = conn.UnauthenticatedBind(l.LookupBindDN)
+	} else {
+		err = conn.Bind(l.LookupBindDN, l.LookupBindPassword)
+	}
+	if ldap.IsErrorWithCode(err, 49) {
+		return fmt.Errorf("LDAP Lookup Bind user invalid credentials error: %v", err)
+	}
+	return err
 }
 
 // usernameFormatsBind - Iterates over all given username formats and expects
@@ -208,6 +212,8 @@ func (l *Config) usernameFormatsBind(conn *ldap.Conn, username, password string)
 		if errs[i] == nil {
 			bindDistNames = append(bindDistNames, bindDN)
 			successCount++
+		} else if !ldap.IsErrorWithCode(errs[i], 49) {
+			return "", fmt.Errorf("LDAP Bind request failed with unexpected error: %v", errs[i])
 		}
 	}
 	if successCount == 0 {
@@ -217,7 +223,7 @@ func (l *Config) usernameFormatsBind(conn *ldap.Conn, username, password string)
 				errStrings = append(errStrings, err.Error())
 			}
 		}
-		outErr := fmt.Sprintf("All username formats failed with: %s", strings.Join(errStrings, "; "))
+		outErr := fmt.Sprintf("All username formats failed due to invalid credentials: %s", strings.Join(errStrings, "; "))
 		return "", errors.New(outErr)
 	}
 	if successCount > 1 {
@@ -307,12 +313,13 @@ func (l *Config) Bind(username, password string) (string, []string, error) {
 	var groups []string
 	if l.GroupSearchFilter != "" {
 		for _, groupSearchBase := range l.GroupSearchBaseDistNames {
-			filter := strings.Replace(l.GroupSearchFilter, "%s", ldap.EscapeFilter(bindDN), -1)
+			filter := strings.Replace(l.GroupSearchFilter, "%s", ldap.EscapeFilter(username), -1)
+			filter = strings.Replace(filter, "%d", ldap.EscapeFilter(bindDN), -1)
 			searchRequest := ldap.NewSearchRequest(
 				groupSearchBase,
 				ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
 				filter,
-				[]string{l.GroupNameAttribute},
+				nil,
 				nil,
 			)
 
@@ -368,6 +375,38 @@ func (l Config) GetExpiryDuration() time.Duration {
 	return l.stsExpiryDuration
 }
 
+func (l Config) testConnection() error {
+	conn, err := l.Connect()
+	if err != nil {
+		return fmt.Errorf("Error creating connection to LDAP server: %v", err)
+	}
+	defer conn.Close()
+	if l.isUsingLookupBind {
+		if err = l.lookupBind(conn); err != nil {
+			return fmt.Errorf("Error connecting as LDAP Lookup Bind user: %v", err)
+		}
+		return nil
+	}
+
+	// Generate some random user credentials for username formats mode test.
+	username := fmt.Sprintf("sometestuser%09d", rand.Int31n(1000000000))
+	charset := []byte("abcdefghijklmnopqrstuvwxyz" +
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+	rand.Shuffle(len(charset), func(i, j int) {
+		charset[i], charset[j] = charset[j], charset[i]
+	})
+	password := string(charset[:20])
+	_, err = l.usernameFormatsBind(conn, username, password)
+	if err == nil {
+		// We don't expect to successfully guess a credential in this
+		// way.
+		return fmt.Errorf("Unexpected random credentials success for user=%s password=%s", username, password)
+	} else if strings.HasPrefix(err.Error(), "All username formats failed due to invalid credentials: ") {
+		return nil
+	}
+	return fmt.Errorf("LDAP connection test error: %v", err)
+}
+
 // Enabled returns if jwks is enabled.
 func Enabled(kvs config.KVS) bool {
 	return kvs.Get(ServerAddr) != ""
@@ -427,14 +466,14 @@ func Lookup(kvs config.KVS, rootCAs *x509.CertPool) (l Config, err error) {
 	// Lookup bind user configuration
 	lookupBindDN := env.Get(EnvLookupBindDN, kvs.Get(LookupBindDN))
 	lookupBindPassword := env.Get(EnvLookupBindPassword, kvs.Get(LookupBindPassword))
-	if lookupBindDN != "" && lookupBindPassword != "" {
+	if lookupBindDN != "" {
 		l.LookupBindDN = lookupBindDN
 		l.LookupBindPassword = lookupBindPassword
 		l.isUsingLookupBind = true
 
 		// User DN search configuration
 		userDNSearchBaseDN := env.Get(EnvUserDNSearchBaseDN, kvs.Get(UserDNSearchBaseDN))
-		userDNSearchFilter := env.Get(EnvUserDNSearchFilter, kvs.Get(EnvUserDNSearchFilter))
+		userDNSearchFilter := env.Get(EnvUserDNSearchFilter, kvs.Get(UserDNSearchFilter))
 		if userDNSearchFilter == "" || userDNSearchBaseDN == "" {
 			return l, errors.New("In lookup bind mode, userDN search base DN and userDN search filter are both required")
 		}
@@ -461,23 +500,22 @@ func Lookup(kvs config.KVS, rootCAs *x509.CertPool) (l Config, err error) {
 		return l, errors.New("Either Lookup Bind mode or Username Format mode is required.")
 	}
 
+	// Test connection to LDAP server.
+	if err := l.testConnection(); err != nil {
+		return l, fmt.Errorf("Connection test for LDAP server failed: %v", err)
+	}
+
 	// Group search params configuration
 	grpSearchFilter := env.Get(EnvGroupSearchFilter, kvs.Get(GroupSearchFilter))
-	grpSearchNameAttr := env.Get(EnvGroupNameAttribute, kvs.Get(GroupNameAttribute))
 	grpSearchBaseDN := env.Get(EnvGroupSearchBaseDN, kvs.Get(GroupSearchBaseDN))
 
 	// Either all group params must be set or none must be set.
-	var allSet bool
-	if grpSearchFilter != "" {
-		if grpSearchNameAttr == "" || grpSearchBaseDN == "" {
-			return l, errors.New("All group related parameters must be set")
-		}
-		allSet = true
+	if (grpSearchFilter != "" && grpSearchBaseDN == "") || (grpSearchFilter == "" && grpSearchBaseDN != "") {
+		return l, errors.New("All group related parameters must be set")
 	}
 
-	if allSet {
+	if grpSearchFilter != "" {
 		l.GroupSearchFilter = grpSearchFilter
-		l.GroupNameAttribute = grpSearchNameAttr
 		l.GroupSearchBaseDistName = grpSearchBaseDN
 		l.GroupSearchBaseDistNames = strings.Split(l.GroupSearchBaseDistName, dnDelimiter)
 	}

cmd/config/identity/ldap/help.go

@@ -68,12 +68,6 @@ var (
 			Optional:    true,
 			Type:        "string",
 		},
-		config.HelpKV{
-			Key:         GroupNameAttribute,
-			Description: `search attribute for group name e.g. "cn"`,
-			Optional:    true,
-			Type:        "string",
-		},
 		config.HelpKV{
 			Key:         GroupSearchBaseDN,
 			Description: `";" separated list of group search base DNs e.g. "dc=myldapserver,dc=com"`,

cmd/config/identity/ldap/legacy.go

@@ -41,10 +41,6 @@ func SetIdentityLDAP(s config.Config, ldapArgs Config) {
 			Key:   GroupSearchFilter,
 			Value: ldapArgs.GroupSearchFilter,
 		},
-		config.KV{
-			Key:   GroupNameAttribute,
-			Value: ldapArgs.GroupNameAttribute,
-		},
 		config.KV{
 			Key:   GroupSearchBaseDN,
 			Value: ldapArgs.GroupSearchBaseDistName,

cmd/config/identity/openid/ecdsa-sha3.go

@@ -1,18 +1,18 @@
-/*
- * MinIO Cloud Storage, (C) 2020 MinIO, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// MinIO Cloud Storage, (C) 2020 MinIO, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !fips
 
 package openid
 
@@ -22,7 +22,7 @@ import (
 	"github.com/dgrijalva/jwt-go"
 
 	// Needed for SHA3 to work - See: https://golang.org/src/crypto/crypto.go?s=1034:1288
-	_ "golang.org/x/crypto/sha3"
+	_ "golang.org/x/crypto/sha3" // There is no SHA-3 FIPS-140 2 compliant implementation
 )
 
 // Specific instances for EC256 and company

cmd/config/identity/openid/rsa-sha3.go

@@ -1,18 +1,18 @@
-/*
- * MinIO Cloud Storage, (C) 2020 MinIO, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// MinIO Cloud Storage, (C) 2020 MinIO, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !fips
 
 package openid
 
@@ -22,7 +22,7 @@ import (
 	"github.com/dgrijalva/jwt-go"
 
 	// Needed for SHA3 to work - See: https://golang.org/src/crypto/crypto.go?s=1034:1288
-	_ "golang.org/x/crypto/sha3"
+	_ "golang.org/x/crypto/sha3" // There is no SHA-3 FIPS-140 2 compliant implementation
 )
 
 // Specific instances for RS256 and company

cmd/config/scanner/scanner.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package crawler
+package scanner
 
 import (
 	"strconv"
@@ -29,8 +29,10 @@ const (
 	Delay   = "delay"
 	MaxWait = "max_wait"
 
-	EnvDelay   = "MINIO_CRAWLER_DELAY"
-	EnvMaxWait = "MINIO_CRAWLER_MAX_WAIT"
+	EnvDelay         = "MINIO_SCANNER_DELAY"
+	EnvDelayLegacy   = "MINIO_CRAWLER_DELAY"
+	EnvMaxWait       = "MINIO_SCANNER_MAX_WAIT"
+	EnvMaxWaitLegacy = "MINIO_CRAWLER_MAX_WAIT"
 )
 
 // Config represents the heal settings.
@@ -58,7 +60,7 @@ var (
 	Help = config.HelpKVS{
 		config.HelpKV{
 			Key:         Delay,
-			Description: `crawler delay multiplier, defaults to '10.0'`,
+			Description: `scanner delay multiplier, defaults to '10.0'`,
 			Optional:    true,
 			Type:        "float",
 		},
@@ -73,14 +75,22 @@ var (
 
 // LookupConfig - lookup config and override with valid environment settings if any.
 func LookupConfig(kvs config.KVS) (cfg Config, err error) {
-	if err = config.CheckValidKeys(config.CrawlerSubSys, kvs, DefaultKVS); err != nil {
+	if err = config.CheckValidKeys(config.ScannerSubSys, kvs, DefaultKVS); err != nil {
 		return cfg, err
 	}
-	cfg.Delay, err = strconv.ParseFloat(env.Get(EnvDelay, kvs.Get(Delay)), 64)
+	delay := env.Get(EnvDelayLegacy, "")
+	if delay == "" {
+		delay = env.Get(EnvDelay, kvs.Get(Delay))
+	}
+	cfg.Delay, err = strconv.ParseFloat(delay, 64)
 	if err != nil {
 		return cfg, err
 	}
-	cfg.MaxWait, err = time.ParseDuration(env.Get(EnvMaxWait, kvs.Get(MaxWait)))
+	maxWait := env.Get(EnvMaxWaitLegacy, "")
+	if maxWait == "" {
+		maxWait = env.Get(EnvMaxWait, kvs.Get(MaxWait))
+	}
+	cfg.MaxWait, err = time.ParseDuration(maxWait)
 	if err != nil {
 		return cfg, err
 	}

cmd/crypto/config.go

@@ -18,6 +18,7 @@ import (
 	"errors"
 	"math/rand"
 	"net/http"
+	"os"
 	"reflect"
 	"strconv"
 	"strings"
@@ -410,6 +411,9 @@ func NewKMS(cfg KMSConfig) (kms KMS, err error) {
 	} else if cfg.Vault.Enabled && cfg.Kes.Enabled {
 		return kms, errors.New("Ambiguous KMS configuration: vault configuration and kes configuration are provided at the same time")
 	} else if cfg.Vault.Enabled {
+		if v, ok := os.LookupEnv("MINIO_KMS_VAULT_DEPRECATION"); !ok || v != "off" { // TODO(aead): Remove once Vault support has been removed
+			return kms, errors.New("Hashicorp Vault is deprecated and will be removed Oct. 2021. To temporarily enable Hashicorp Vault support, set MINIO_KMS_VAULT_DEPRECATION=off")
+		}
 		kms, err = NewVault(cfg.Vault)
 		if err != nil {
 			return kms, err

cmd/crypto/key.go

@@ -19,13 +19,13 @@ import (
 	"context"
 	"crypto/hmac"
 	"crypto/rand"
+	"crypto/sha256"
 	"encoding/binary"
 	"errors"
 	"io"
 	"path"
 
 	"github.com/minio/minio/cmd/logger"
-	sha256 "github.com/minio/sha256-simd"
 	"github.com/minio/sio"
 )
 

cmd/crypto/kms.go

@@ -19,13 +19,13 @@ import (
 	"context"
 	"crypto/hmac"
 	"crypto/rand"
+	"crypto/sha256"
 	"errors"
 	"fmt"
 	"io"
 	"sort"
 
 	"github.com/minio/minio/cmd/logger"
-	sha256 "github.com/minio/sha256-simd"
 	"github.com/minio/sio"
 )
 

cmd/crypto/metadata.go

@@ -44,6 +44,15 @@ const (
 	// MetaDataEncryptionKey is the sealed data encryption key (DEK) received from
 	// the KMS.
 	MetaDataEncryptionKey = "X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key"
+
+	// MetaContext is the KMS context provided by a client when encrypting an
+	// object with SSE-KMS. A client may not send a context in which case the
+	// MetaContext will not be present.
+	// MetaContext only contains the bucket/object name if the client explicitly
+	// added it. However, when decrypting an object the bucket/object name must
+	// be part of the object. Therefore, the bucket/object name must be added
+	// to the context, if not present, whenever a decryption is performed.
+	MetaContext = "X-Minio-Internal-Server-Side-Encryption-Context"
 )
 
 // IsMultiPart returns true if the object metadata indicates
@@ -109,26 +118,35 @@ func IsSourceEncrypted(metadata map[string]string) bool {
 //
 // IsEncrypted only checks whether the metadata contains at least
 // one entry indicating SSE-C or SSE-S3.
-func IsEncrypted(metadata map[string]string) bool {
-	if _, ok := metadata[MetaIV]; ok {
-		return true
-	}
-	if _, ok := metadata[MetaAlgorithm]; ok {
-		return true
-	}
-	if IsMultiPart(metadata) {
-		return true
+func IsEncrypted(metadata map[string]string) (Type, bool) {
+	if S3KMS.IsEncrypted(metadata) {
+		return S3KMS, true
 	}
 	if S3.IsEncrypted(metadata) {
-		return true
+		return S3, true
 	}
 	if SSEC.IsEncrypted(metadata) {
-		return true
+		return SSEC, true
 	}
-	if S3KMS.IsEncrypted(metadata) {
-		return true
+	if IsMultiPart(metadata) {
+		return nil, true
 	}
-	return false
+	if _, ok := metadata[MetaIV]; ok {
+		return nil, true
+	}
+	if _, ok := metadata[MetaAlgorithm]; ok {
+		return nil, true
+	}
+	if _, ok := metadata[MetaKeyID]; ok {
+		return nil, true
+	}
+	if _, ok := metadata[MetaDataEncryptionKey]; ok {
+		return nil, true
+	}
+	if _, ok := metadata[MetaContext]; ok {
+		return nil, true
+	}
+	return nil, false
 }
 
 // CreateMultipartMetadata adds the multipart flag entry to metadata

cmd/crypto/metadata_test.go

@@ -59,7 +59,7 @@ var isEncryptedTests = []struct {
 
 func TestIsEncrypted(t *testing.T) {
 	for i, test := range isEncryptedTests {
-		if isEncrypted := IsEncrypted(test.Metadata); isEncrypted != test.Encrypted {
+		if _, isEncrypted := IsEncrypted(test.Metadata); isEncrypted != test.Encrypted {
 			t.Errorf("Test %d: got '%v' - want '%v'", i, isEncrypted, test.Encrypted)
 		}
 	}
@@ -74,8 +74,8 @@ var s3IsEncryptedTests = []struct {
 	{Encrypted: false, Metadata: map[string]string{MetaAlgorithm: ""}},                             // 2
 	{Encrypted: false, Metadata: map[string]string{MetaSealedKeySSEC: ""}},                         // 3
 	{Encrypted: true, Metadata: map[string]string{MetaSealedKeyS3: ""}},                            // 4
-	{Encrypted: true, Metadata: map[string]string{MetaKeyID: ""}},                                  // 5
-	{Encrypted: true, Metadata: map[string]string{MetaDataEncryptionKey: ""}},                      // 6
+	{Encrypted: false, Metadata: map[string]string{MetaKeyID: ""}},                                 // 5
+	{Encrypted: false, Metadata: map[string]string{MetaDataEncryptionKey: ""}},                     // 6
 	{Encrypted: false, Metadata: map[string]string{"": ""}},                                        // 7
 	{Encrypted: false, Metadata: map[string]string{"X-Minio-Internal-Server-Side-Encryption": ""}}, // 8
 }

cmd/crypto/sse-kms.go

@@ -82,12 +82,6 @@ func (ssekms) IsEncrypted(metadata map[string]string) bool {
 	if _, ok := metadata[MetaSealedKeyKMS]; ok {
 		return true
 	}
-	if _, ok := metadata[MetaKeyID]; ok {
-		return true
-	}
-	if _, ok := metadata[MetaDataEncryptionKey]; ok {
-		return true
-	}
 	return false
 }
 
@@ -95,11 +89,14 @@ func (ssekms) IsEncrypted(metadata map[string]string) bool {
 // from the metadata using KMS and returns the decrypted object
 // key.
 func (s3 ssekms) UnsealObjectKey(kms KMS, metadata map[string]string, bucket, object string) (key ObjectKey, err error) {
-	keyID, kmsKey, sealedKey, err := s3.ParseMetadata(metadata)
+	keyID, kmsKey, sealedKey, ctx, err := s3.ParseMetadata(metadata)
 	if err != nil {
 		return key, err
 	}
-	unsealKey, err := kms.UnsealKey(keyID, kmsKey, Context{bucket: path.Join(bucket, object)})
+	if _, ok := ctx[bucket]; !ok {
+		ctx[bucket] = path.Join(bucket, object)
+	}
+	unsealKey, err := kms.UnsealKey(keyID, kmsKey, ctx)
 	if err != nil {
 		return key, err
 	}
@@ -147,19 +144,19 @@ func (ssekms) CreateMetadata(metadata map[string]string, keyID string, kmsKey []
 // KMS data key it returns both. If the metadata does not contain neither a
 // KMS master key ID nor a sealed KMS data key it returns an empty keyID and
 // KMS data key. Otherwise, it returns an error.
-func (ssekms) ParseMetadata(metadata map[string]string) (keyID string, kmsKey []byte, sealedKey SealedKey, err error) {
+func (ssekms) ParseMetadata(metadata map[string]string) (keyID string, kmsKey []byte, sealedKey SealedKey, ctx Context, err error) {
 	// Extract all required values from object metadata
 	b64IV, ok := metadata[MetaIV]
 	if !ok {
-		return keyID, kmsKey, sealedKey, errMissingInternalIV
+		return keyID, kmsKey, sealedKey, ctx, errMissingInternalIV
 	}
 	algorithm, ok := metadata[MetaAlgorithm]
 	if !ok {
-		return keyID, kmsKey, sealedKey, errMissingInternalSealAlgorithm
+		return keyID, kmsKey, sealedKey, ctx, errMissingInternalSealAlgorithm
 	}
 	b64SealedKey, ok := metadata[MetaSealedKeyKMS]
 	if !ok {
-		return keyID, kmsKey, sealedKey, Errorf("The object metadata is missing the internal sealed key for SSE-S3")
+		return keyID, kmsKey, sealedKey, ctx, Errorf("The object metadata is missing the internal sealed key for SSE-S3")
 	}
 
 	// There are two possibilites:
@@ -169,33 +166,44 @@ func (ssekms) ParseMetadata(metadata map[string]string) (keyID string, kmsKey []
 	keyID, idPresent := metadata[MetaKeyID]
 	b64KMSSealedKey, kmsKeyPresent := metadata[MetaDataEncryptionKey]
 	if !idPresent && kmsKeyPresent {
-		return keyID, kmsKey, sealedKey, Errorf("The object metadata is missing the internal KMS key-ID for SSE-S3")
+		return keyID, kmsKey, sealedKey, ctx, Errorf("The object metadata is missing the internal KMS key-ID for SSE-S3")
 	}
 	if idPresent && !kmsKeyPresent {
-		return keyID, kmsKey, sealedKey, Errorf("The object metadata is missing the internal sealed KMS data key for SSE-S3")
+		return keyID, kmsKey, sealedKey, ctx, Errorf("The object metadata is missing the internal sealed KMS data key for SSE-S3")
 	}
 
 	// Check whether all extracted values are well-formed
 	iv, err := base64.StdEncoding.DecodeString(b64IV)
 	if err != nil || len(iv) != 32 {
-		return keyID, kmsKey, sealedKey, errInvalidInternalIV
+		return keyID, kmsKey, sealedKey, ctx, errInvalidInternalIV
 	}
 	if algorithm != SealAlgorithm {
-		return keyID, kmsKey, sealedKey, errInvalidInternalSealAlgorithm
+		return keyID, kmsKey, sealedKey, ctx, errInvalidInternalSealAlgorithm
 	}
 	encryptedKey, err := base64.StdEncoding.DecodeString(b64SealedKey)
 	if err != nil || len(encryptedKey) != 64 {
-		return keyID, kmsKey, sealedKey, Errorf("The internal sealed key for SSE-S3 is invalid")
+		return keyID, kmsKey, sealedKey, ctx, Errorf("The internal sealed key for SSE-KMS is invalid")
 	}
 	if idPresent && kmsKeyPresent { // We are using a KMS -> parse the sealed KMS data key.
 		kmsKey, err = base64.StdEncoding.DecodeString(b64KMSSealedKey)
 		if err != nil {
-			return keyID, kmsKey, sealedKey, Errorf("The internal sealed KMS data key for SSE-S3 is invalid")
+			return keyID, kmsKey, sealedKey, ctx, Errorf("The internal sealed KMS data key for SSE-KMS is invalid")
+		}
+	}
+	b64Ctx, ok := metadata[MetaContext]
+	if ok {
+		b, err := base64.StdEncoding.DecodeString(b64Ctx)
+		if err != nil {
+			return keyID, kmsKey, sealedKey, ctx, Errorf("The internal KMS context is not base64-encoded")
+		}
+		var json = jsoniter.ConfigCompatibleWithStandardLibrary
+		if err = json.Unmarshal(b, ctx); err != nil {
+			return keyID, kmsKey, sealedKey, ctx, Errorf("The internal sealed KMS context is invalid")
 		}
 	}
 
 	sealedKey.Algorithm = algorithm
 	copy(sealedKey.IV[:], iv)
 	copy(sealedKey.Key[:], encryptedKey)
-	return keyID, kmsKey, sealedKey, nil
+	return keyID, kmsKey, sealedKey, ctx, nil
 }

cmd/crypto/sse-s3.go

@@ -62,12 +62,6 @@ func (sses3) IsEncrypted(metadata map[string]string) bool {
 	if _, ok := metadata[MetaSealedKeyS3]; ok {
 		return true
 	}
-	if _, ok := metadata[MetaKeyID]; ok {
-		return true
-	}
-	if _, ok := metadata[MetaDataEncryptionKey]; ok {
-		return true
-	}
 	return false
 }
 

cmd/data-scanner.go

@@ -23,6 +23,7 @@ import (
 	"errors"
 	"math"
 	"math/rand"
+	"net/http"
 	"os"
 	"path"
 	"strings"
@@ -42,9 +43,9 @@ import (
 )
 
 const (
-	dataCrawlSleepPerFolder  = time.Millisecond // Time to wait between folders.
-	dataCrawlStartDelay      = 1 * time.Minute  // Time to wait on startup and between cycles.
-	dataUsageUpdateDirCycles = 16               // Visit all folders every n cycles.
+	dataScannerSleepPerFolder = time.Millisecond // Time to wait between folders.
+	dataScannerStartDelay     = 1 * time.Minute  // Time to wait on startup and between cycles.
+	dataUsageUpdateDirCycles  = 16               // Visit all folders every n cycles.
 
 	healDeleteDangling    = true
 	healFolderIncludeProb = 32  // Include a clean folder one in n cycles.
@@ -55,27 +56,28 @@ var (
 	globalHealConfig   heal.Config
 	globalHealConfigMu sync.Mutex
 
-	dataCrawlerLeaderLockTimeout = newDynamicTimeout(30*time.Second, 10*time.Second)
+	dataScannerLeaderLockTimeout = newDynamicTimeout(30*time.Second, 10*time.Second)
 	// Sleeper values are updated when config is loaded.
-	crawlerSleeper = newDynamicSleeper(10, 10*time.Second)
+	scannerSleeper = newDynamicSleeper(10, 10*time.Second)
 )
 
-// initDataCrawler will start the crawler in the background.
-func initDataCrawler(ctx context.Context, objAPI ObjectLayer) {
-	go runDataCrawler(ctx, objAPI)
+// initDataScanner will start the scanner in the background.
+func initDataScanner(ctx context.Context, objAPI ObjectLayer) {
+	go runDataScanner(ctx, objAPI)
 }
 
-// runDataCrawler will start a data crawler.
+// runDataScanner will start a data scanner.
 // The function will block until the context is canceled.
-// There should only ever be one crawler running per cluster.
-func runDataCrawler(ctx context.Context, objAPI ObjectLayer) {
-	// Make sure only 1 crawler is running on the cluster.
-	locker := objAPI.NewNSLock(minioMetaBucket, "runDataCrawler.lock")
+// There should only ever be one scanner running per cluster.
+func runDataScanner(ctx context.Context, objAPI ObjectLayer) {
+	var err error
+	// Make sure only 1 scanner is running on the cluster.
+	locker := objAPI.NewNSLock(minioMetaBucket, "runDataScanner.lock")
 	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	for {
-		err := locker.GetLock(ctx, dataCrawlerLeaderLockTimeout)
+		ctx, err = locker.GetLock(ctx, dataScannerLeaderLockTimeout)
 		if err != nil {
-			time.Sleep(time.Duration(r.Float64() * float64(dataCrawlStartDelay)))
+			time.Sleep(time.Duration(r.Float64() * float64(dataScannerStartDelay)))
 			continue
 		}
 		break
@@ -84,31 +86,34 @@ func runDataCrawler(ctx context.Context, objAPI ObjectLayer) {
 
 	// Load current bloom cycle
 	nextBloomCycle := intDataUpdateTracker.current() + 1
-	var buf bytes.Buffer
-	err := objAPI.GetObject(ctx, dataUsageBucket, dataUsageBloomName, 0, -1, &buf, "", ObjectOptions{})
+
+	br, err := objAPI.GetObjectNInfo(ctx, dataUsageBucket, dataUsageBloomName, nil, http.Header{}, readLock, ObjectOptions{})
 	if err != nil {
 		if !isErrObjectNotFound(err) && !isErrBucketNotFound(err) {
 			logger.LogIf(ctx, err)
 		}
 	} else {
-		if buf.Len() == 8 {
-			nextBloomCycle = binary.LittleEndian.Uint64(buf.Bytes())
+		if br.ObjInfo.Size == 8 {
+			if err = binary.Read(br, binary.LittleEndian, &nextBloomCycle); err != nil {
+				logger.LogIf(ctx, err)
+			}
 		}
+		br.Close()
 	}
 
-	crawlTimer := time.NewTimer(dataCrawlStartDelay)
-	defer crawlTimer.Stop()
+	scannerTimer := time.NewTimer(dataScannerStartDelay)
+	defer scannerTimer.Stop()
 
 	for {
 		select {
 		case <-ctx.Done():
 			return
-		case <-crawlTimer.C:
+		case <-scannerTimer.C:
 			// Reset the timer for next cycle.
-			crawlTimer.Reset(dataCrawlStartDelay)
+			scannerTimer.Reset(dataScannerStartDelay)
 
 			if intDataUpdateTracker.debug {
-				console.Debugln("starting crawler cycle")
+				console.Debugln("starting scanner cycle")
 			}
 
 			// Wait before starting next cycle and wait on startup.
@@ -116,7 +121,7 @@ func runDataCrawler(ctx context.Context, objAPI ObjectLayer) {
 			go storeDataUsageInBackend(ctx, objAPI, results)
 			bf, err := globalNotificationSys.updateBloomFilter(ctx, nextBloomCycle)
 			logger.LogIf(ctx, err)
-			err = objAPI.CrawlAndGetDataUsage(ctx, bf, results)
+			err = objAPI.NSScanner(ctx, bf, results)
 			close(results)
 			logger.LogIf(ctx, err)
 			if err == nil {
@@ -124,13 +129,13 @@ func runDataCrawler(ctx context.Context, objAPI ObjectLayer) {
 				nextBloomCycle++
 				var tmp [8]byte
 				binary.LittleEndian.PutUint64(tmp[:], nextBloomCycle)
-				r, err := hash.NewReader(bytes.NewReader(tmp[:]), int64(len(tmp)), "", "", int64(len(tmp)), false)
+				r, err := hash.NewReader(bytes.NewReader(tmp[:]), int64(len(tmp)), "", "", int64(len(tmp)))
 				if err != nil {
 					logger.LogIf(ctx, err)
 					continue
 				}
 
-				_, err = objAPI.PutObject(ctx, dataUsageBucket, dataUsageBloomName, NewPutObjReader(r, nil, nil), ObjectOptions{})
+				_, err = objAPI.PutObject(ctx, dataUsageBucket, dataUsageBloomName, NewPutObjReader(r), ObjectOptions{})
 				if !isErrBucketNotFound(err) {
 					logger.LogIf(ctx, err)
 				}
@@ -152,27 +157,27 @@ type folderScanner struct {
 	newCache   dataUsageCache
 	withFilter *bloomFilter
 
-	dataUsageCrawlDebug bool
-	healFolderInclude   uint32 // Include a clean folder one in n cycles.
-	healObjectSelect    uint32 // Do a heal check on an object once every n cycles. Must divide into healFolderInclude
+	dataUsageScannerDebug bool
+	healFolderInclude     uint32 // Include a clean folder one in n cycles.
+	healObjectSelect      uint32 // Do a heal check on an object once every n cycles. Must divide into healFolderInclude
 
 	newFolders      []cachedFolder
 	existingFolders []cachedFolder
 	disks           []StorageAPI
 }
 
-// crawlDataFolder will crawl the basepath+cache.Info.Name and return an updated cache.
+// scanDataFolder will scanner the basepath+cache.Info.Name and return an updated cache.
 // The returned cache will always be valid, but may not be updated from the existing.
-// Before each operation sleepDuration is called which can be used to temporarily halt the crawler.
+// Before each operation sleepDuration is called which can be used to temporarily halt the scanner.
 // If the supplied context is canceled the function will return at the first chance.
-func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache, getSize getSizeFn) (dataUsageCache, error) {
+func scanDataFolder(ctx context.Context, basePath string, cache dataUsageCache, getSize getSizeFn) (dataUsageCache, error) {
 	t := UTCNow()
 
 	logPrefix := color.Green("data-usage: ")
 	logSuffix := color.Blue("- %v + %v", basePath, cache.Info.Name)
 	if intDataUpdateTracker.debug {
 		defer func() {
-			console.Debugf(logPrefix+" Crawl time: %v %s\n", time.Since(t), logSuffix)
+			console.Debugf(logPrefix+" Scanner time: %v %s\n", time.Since(t), logSuffix)
 		}()
 
 	}
@@ -185,15 +190,15 @@ func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 	skipHeal := cache.Info.SkipHealing
 
 	s := folderScanner{
-		root:                basePath,
-		getSize:             getSize,
-		oldCache:            cache,
-		newCache:            dataUsageCache{Info: cache.Info},
-		newFolders:          nil,
-		existingFolders:     nil,
-		dataUsageCrawlDebug: intDataUpdateTracker.debug,
-		healFolderInclude:   0,
-		healObjectSelect:    0,
+		root:                  basePath,
+		getSize:               getSize,
+		oldCache:              cache,
+		newCache:              dataUsageCache{Info: cache.Info},
+		newFolders:            nil,
+		existingFolders:       nil,
+		dataUsageScannerDebug: intDataUpdateTracker.debug,
+		healFolderInclude:     0,
+		healObjectSelect:      0,
 	}
 
 	// Add disks for set healing.
@@ -223,21 +228,21 @@ func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 			s.withFilter = nil
 		}
 	}
-	if s.dataUsageCrawlDebug {
-		console.Debugf(logPrefix+"Start crawling. Bloom filter: %v %s\n", s.withFilter != nil, logSuffix)
+	if s.dataUsageScannerDebug {
+		console.Debugf(logPrefix+"Start scanning. Bloom filter: %v %s\n", s.withFilter != nil, logSuffix)
 	}
 
 	done := ctx.Done()
 	var flattenLevels = 2
 
-	if s.dataUsageCrawlDebug {
+	if s.dataUsageScannerDebug {
 		console.Debugf(logPrefix+"Cycle: %v, Entries: %v %s\n", cache.Info.NextCycle, len(cache.Cache), logSuffix)
 	}
 
 	// Always scan flattenLevels deep. Cache root is level 0.
 	todo := []cachedFolder{{name: cache.Info.Name, objectHealProbDiv: 1}}
 	for i := 0; i < flattenLevels; i++ {
-		if s.dataUsageCrawlDebug {
+		if s.dataUsageScannerDebug {
 			console.Debugf(logPrefix+"Level %v, scanning %v directories. %s\n", i, len(todo), logSuffix)
 		}
 		select {
@@ -253,7 +258,7 @@ func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 		}
 	}
 
-	if s.dataUsageCrawlDebug {
+	if s.dataUsageScannerDebug {
 		console.Debugf(logPrefix+"New folders: %v %s\n", s.newFolders, logSuffix)
 	}
 
@@ -282,7 +287,7 @@ func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 		}
 	}
 
-	if s.dataUsageCrawlDebug {
+	if s.dataUsageScannerDebug {
 		console.Debugf(logPrefix+"Existing folders: %v %s\n", len(s.existingFolders), logSuffix)
 	}
 
@@ -309,13 +314,13 @@ func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 				// If folder isn't in filter, skip it completely.
 				if !s.withFilter.containsDir(folder.name) {
 					if !h.mod(s.oldCache.Info.NextCycle, s.healFolderInclude/folder.objectHealProbDiv) {
-						if s.dataUsageCrawlDebug {
+						if s.dataUsageScannerDebug {
 							console.Debugf(logPrefix+"Skipping non-updated folder: %v %s\n", folder, logSuffix)
 						}
 						s.newCache.replaceHashed(h, folder.parent, s.oldCache.Cache[h.Key()])
 						continue
 					} else {
-						if s.dataUsageCrawlDebug {
+						if s.dataUsageScannerDebug {
 							console.Debugf(logPrefix+"Adding non-updated folder to heal check: %v %s\n", folder.name, logSuffix)
 						}
 						// Update probability of including objects
@@ -337,8 +342,8 @@ func crawlDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 		}
 		s.newCache.replaceHashed(h, folder.parent, *du)
 	}
-	if s.dataUsageCrawlDebug {
-		console.Debugf(logPrefix+"Finished crawl, %v entries %s\n", len(s.newCache.Cache), logSuffix)
+	if s.dataUsageScannerDebug {
+		console.Debugf(logPrefix+"Finished scanner, %v entries %s\n", len(s.newCache.Cache), logSuffix)
 	}
 	s.newCache.Info.LastUpdate = UTCNow()
 	s.newCache.Info.NextCycle++
@@ -367,7 +372,7 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 		_, prefix := path2BucketObjectWithBasePath(f.root, folder.name)
 		var activeLifeCycle *lifecycle.Lifecycle
 		if f.oldCache.Info.lifeCycle != nil && f.oldCache.Info.lifeCycle.HasActiveRules(prefix, true) {
-			if f.dataUsageCrawlDebug {
+			if f.dataUsageScannerDebug {
 				console.Debugf(scannerLogPrefix+" Prefix %q has active rules\n", prefix)
 			}
 			activeLifeCycle = f.oldCache.Info.lifeCycle
@@ -378,20 +383,20 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 			if folder.name != dataUsageRoot && !filter.containsDir(folder.name) {
 				if !thisHash.mod(f.oldCache.Info.NextCycle, f.healFolderInclude/folder.objectHealProbDiv) {
 					f.newCache.copyWithChildren(&f.oldCache, thisHash, folder.parent)
-					if f.dataUsageCrawlDebug {
+					if f.dataUsageScannerDebug {
 						console.Debugf(scannerLogPrefix+" Skipping non-updated folder: %v\n", folder.name)
 					}
 					continue
 				} else {
-					if f.dataUsageCrawlDebug {
+					if f.dataUsageScannerDebug {
 						console.Debugf(scannerLogPrefix+" Adding non-updated folder to heal check: %v\n", folder.name)
 					}
-					// If probability was already crawlerHealFolderInclude, keep it.
+					// If probability was already scannerHealFolderInclude, keep it.
 					folder.objectHealProbDiv = f.healFolderInclude
 				}
 			}
 		}
-		crawlerSleeper.Sleep(ctx, dataCrawlSleepPerFolder)
+		scannerSleeper.Sleep(ctx, dataScannerSleepPerFolder)
 
 		cache := dataUsageEntry{}
 
@@ -400,22 +405,22 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 			entName = path.Clean(path.Join(folder.name, entName))
 			bucket, prefix := path2BucketObjectWithBasePath(f.root, entName)
 			if bucket == "" {
-				if f.dataUsageCrawlDebug {
+				if f.dataUsageScannerDebug {
 					console.Debugf(scannerLogPrefix+" no bucket (%s,%s)\n", f.root, entName)
 				}
-				return nil
+				return errDoneForNow
 			}
 
 			if isReservedOrInvalidBucket(bucket, false) {
-				if f.dataUsageCrawlDebug {
+				if f.dataUsageScannerDebug {
 					console.Debugf(scannerLogPrefix+" invalid bucket: %v, entry: %v\n", bucket, entName)
 				}
-				return nil
+				return errDoneForNow
 			}
 
 			select {
 			case <-done:
-				return ctx.Err()
+				return errDoneForNow
 			default:
 			}
 
@@ -443,16 +448,16 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 			}
 
 			// Dynamic time delay.
-			wait := crawlerSleeper.Timer(ctx)
+			wait := scannerSleeper.Timer(ctx)
 
 			// Get file size, ignore errors.
-			item := crawlItem{
+			item := scannerItem{
 				Path:       path.Join(f.root, entName),
 				Typ:        typ,
 				bucket:     bucket,
 				prefix:     path.Dir(prefix),
 				objectName: path.Base(entName),
-				debug:      f.dataUsageCrawlDebug,
+				debug:      f.dataUsageScannerDebug,
 				lifeCycle:  activeLifeCycle,
 				heal:       thisHash.mod(f.oldCache.Info.NextCycle, f.healObjectSelect/folder.objectHealProbDiv) && globalIsErasure,
 			}
@@ -528,17 +533,18 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 		healObjectsPrefix := color.Green("healObjects:")
 		for k := range existing {
 			bucket, prefix := path2BucketObject(k)
-			if f.dataUsageCrawlDebug {
+			if f.dataUsageScannerDebug {
 				console.Debugf(scannerLogPrefix+" checking disappeared folder: %v/%v\n", bucket, prefix)
 			}
 
 			// Dynamic time delay.
-			wait := crawlerSleeper.Timer(ctx)
+			wait := scannerSleeper.Timer(ctx)
 			resolver.bucket = bucket
 
 			foundObjs := false
 			dangling := false
 			ctx, cancel := context.WithCancel(ctx)
+
 			err := listPathRaw(ctx, listPathRawOptions{
 				disks:          f.disks,
 				bucket:         bucket,
@@ -548,13 +554,13 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 				minDisks:       len(f.disks), // We want full consistency.
 				// Weird, maybe transient error.
 				agreed: func(entry metaCacheEntry) {
-					if f.dataUsageCrawlDebug {
+					if f.dataUsageScannerDebug {
 						console.Debugf(healObjectsPrefix+" got agreement: %v\n", entry.name)
 					}
 				},
 				// Some disks have data for this.
 				partial: func(entries metaCacheEntries, nAgreed int, errs []error) {
-					if f.dataUsageCrawlDebug {
+					if f.dataUsageScannerDebug {
 						console.Debugf(healObjectsPrefix+" got partial, %d agreed, errs: %v\n", nAgreed, errs)
 					}
 
@@ -563,7 +569,7 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 
 					// Sleep and reset.
 					wait()
-					wait = crawlerSleeper.Timer(ctx)
+					wait = scannerSleeper.Timer(ctx)
 					entry, ok := entries.resolve(&resolver)
 					if !ok {
 						for _, err := range errs {
@@ -576,7 +582,7 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 						entry, _ = entries.firstFound()
 					}
 
-					if f.dataUsageCrawlDebug {
+					if f.dataUsageScannerDebug {
 						console.Debugf(healObjectsPrefix+" resolved to: %v, dir: %v\n", entry.name, entry.isDir())
 					}
 
@@ -600,7 +606,7 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 					for _, ver := range fiv.Versions {
 						// Sleep and reset.
 						wait()
-						wait = crawlerSleeper.Timer(ctx)
+						wait = scannerSleeper.Timer(ctx)
 						err := bgSeq.queueHealTask(healSource{
 							bucket:    bucket,
 							object:    fiv.Name,
@@ -614,31 +620,31 @@ func (f *folderScanner) scanQueuedLevels(ctx context.Context, folders []cachedFo
 				},
 				// Too many disks failed.
 				finished: func(errs []error) {
-					if f.dataUsageCrawlDebug {
+					if f.dataUsageScannerDebug {
 						console.Debugf(healObjectsPrefix+" too many errors: %v\n", errs)
 					}
 					cancel()
 				},
 			})
 
-			if f.dataUsageCrawlDebug && err != nil && err != errFileNotFound {
+			if f.dataUsageScannerDebug && err != nil && err != errFileNotFound {
 				console.Debugf(healObjectsPrefix+" checking returned value %v (%T)\n", err, err)
 			}
 
 			// If we found one or more disks with this folder, delete it.
 			if err == nil && dangling {
-				if f.dataUsageCrawlDebug {
+				if f.dataUsageScannerDebug {
 					console.Debugf(healObjectsPrefix+" deleting dangling directory %s\n", prefix)
 				}
 
 				objAPI.HealObjects(ctx, bucket, prefix, madmin.HealOpts{
 					Recursive: true,
-					Remove:    true,
+					Remove:    healDeleteDangling,
 				},
 					func(bucket, object, versionID string) error {
-						// Wait for each heal as per crawler frequency.
+						// Wait for each heal as per scanner frequency.
 						wait()
-						wait = crawlerSleeper.Timer(ctx)
+						wait = scannerSleeper.Timer(ctx)
 						return bgSeq.queueHealTask(healSource{
 							bucket:    bucket,
 							object:    object,
@@ -678,7 +684,7 @@ func (f *folderScanner) deepScanFolder(ctx context.Context, folder cachedFolder,
 	addDir = func(entName string, typ os.FileMode) error {
 		select {
 		case <-done:
-			return ctx.Err()
+			return errDoneForNow
 		default:
 		}
 
@@ -686,12 +692,12 @@ func (f *folderScanner) deepScanFolder(ctx context.Context, folder cachedFolder,
 			dirStack = append(dirStack, entName)
 			err := readDirFn(path.Join(dirStack...), addDir)
 			dirStack = dirStack[:len(dirStack)-1]
-			crawlerSleeper.Sleep(ctx, dataCrawlSleepPerFolder)
+			scannerSleeper.Sleep(ctx, dataScannerSleepPerFolder)
 			return err
 		}
 
 		// Dynamic time delay.
-		wait := crawlerSleeper.Timer(ctx)
+		wait := scannerSleeper.Timer(ctx)
 
 		// Get file size, ignore errors.
 		dirStack = append(dirStack, entName)
@@ -701,19 +707,19 @@ func (f *folderScanner) deepScanFolder(ctx context.Context, folder cachedFolder,
 		bucket, prefix := path2BucketObjectWithBasePath(f.root, fileName)
 		var activeLifeCycle *lifecycle.Lifecycle
 		if f.oldCache.Info.lifeCycle != nil && f.oldCache.Info.lifeCycle.HasActiveRules(prefix, false) {
-			if f.dataUsageCrawlDebug {
+			if f.dataUsageScannerDebug {
 				console.Debugf(deepScannerLogPrefix+" Prefix %q has active rules\n", prefix)
 			}
 			activeLifeCycle = f.oldCache.Info.lifeCycle
 		}
 
-		item := crawlItem{
+		item := scannerItem{
 			Path:       fileName,
 			Typ:        typ,
 			bucket:     bucket,
 			prefix:     path.Dir(prefix),
 			objectName: path.Base(entName),
-			debug:      f.dataUsageCrawlDebug,
+			debug:      f.dataUsageScannerDebug,
 			lifeCycle:  activeLifeCycle,
 			heal:       hashPath(path.Join(prefix, entName)).mod(f.oldCache.Info.NextCycle, f.healObjectSelect/folder.objectHealProbDiv) && globalIsErasure,
 		}
@@ -748,8 +754,8 @@ func (f *folderScanner) deepScanFolder(ctx context.Context, folder cachedFolder,
 	return &cache, nil
 }
 
-// crawlItem represents each file while walking.
-type crawlItem struct {
+// scannerItem represents each file while walking.
+type scannerItem struct {
 	Path string
 	Typ  os.FileMode
 
@@ -769,10 +775,10 @@ type sizeSummary struct {
 	replicaSize    int64
 }
 
-type getSizeFn func(item crawlItem) (sizeSummary, error)
+type getSizeFn func(item scannerItem) (sizeSummary, error)
 
 // transformMetaDir will transform a directory to prefix/file.ext
-func (i *crawlItem) transformMetaDir() {
+func (i *scannerItem) transformMetaDir() {
 	split := strings.Split(i.prefix, SlashSeparator)
 	if len(split) > 1 {
 		i.prefix = path.Join(split[:len(split)-1]...)
@@ -785,22 +791,21 @@ func (i *crawlItem) transformMetaDir() {
 
 // actionMeta contains information used to apply actions.
 type actionMeta struct {
-	oi               ObjectInfo
-	successorModTime time.Time // The modtime of the successor version
-	numVersions      int       // The number of versions of this object
-	bitRotScan       bool      // indicates if bitrot check was requested.
+	oi         ObjectInfo
+	bitRotScan bool // indicates if bitrot check was requested.
 }
 
+var applyActionsLogPrefix = color.Green("applyActions:")
+
 // applyActions will apply lifecycle checks on to a scanned item.
 // The resulting size on disk will always be returned.
 // The metadata will be compared to consensus on the object layer before any changes are applied.
 // If no metadata is supplied, -1 is returned if no action is taken.
-func (i *crawlItem) applyActions(ctx context.Context, o ObjectLayer, meta actionMeta) (size int64) {
+func (i *scannerItem) applyActions(ctx context.Context, o ObjectLayer, meta actionMeta) (size int64) {
 	size, err := meta.oi.GetActualSize()
 	if i.debug {
 		logger.LogIf(ctx, err)
 	}
-	applyActionsLogPrefix := color.Green("applyActions:")
 	if i.heal {
 		if i.debug {
 			if meta.oi.VersionID != "" {
@@ -839,8 +844,8 @@ func (i *crawlItem) applyActions(ctx context.Context, o ObjectLayer, meta action
 			VersionID:        meta.oi.VersionID,
 			DeleteMarker:     meta.oi.DeleteMarker,
 			IsLatest:         meta.oi.IsLatest,
-			NumVersions:      meta.numVersions,
-			SuccessorModTime: meta.successorModTime,
+			NumVersions:      meta.oi.NumVersions,
+			SuccessorModTime: meta.oi.SuccessorModTime,
 			RestoreOngoing:   meta.oi.RestoreOngoing,
 			RestoreExpires:   meta.oi.RestoreExpires,
 			TransitionStatus: meta.oi.TransitionStatus,
@@ -884,96 +889,135 @@ func (i *crawlItem) applyActions(ctx context.Context, o ObjectLayer, meta action
 			return size
 		}
 	}
-	size = obj.Size
 
-	// Recalculate action.
+	var applied bool
+	action = evalActionFromLifecycle(ctx, *i.lifeCycle, obj, i.debug)
+	if action != lifecycle.NoneAction {
+		applied = applyLifecycleAction(ctx, action, o, obj)
+	}
+
+	if applied {
+		switch action {
+		case lifecycle.TransitionAction, lifecycle.TransitionVersionAction:
+		default: // for all lifecycle actions that remove data
+			return 0
+		}
+	}
+	return size
+}
+
+func evalActionFromLifecycle(ctx context.Context, lc lifecycle.Lifecycle, obj ObjectInfo, debug bool) (action lifecycle.Action) {
 	lcOpts := lifecycle.ObjectOpts{
-		Name:             i.objectPath(),
+		Name:             obj.Name,
 		UserTags:         obj.UserTags,
 		ModTime:          obj.ModTime,
 		VersionID:        obj.VersionID,
 		DeleteMarker:     obj.DeleteMarker,
 		IsLatest:         obj.IsLatest,
-		NumVersions:      meta.numVersions,
-		SuccessorModTime: meta.successorModTime,
+		NumVersions:      obj.NumVersions,
+		SuccessorModTime: obj.SuccessorModTime,
 		RestoreOngoing:   obj.RestoreOngoing,
 		RestoreExpires:   obj.RestoreExpires,
 		TransitionStatus: obj.TransitionStatus,
 	}
-	action = i.lifeCycle.ComputeAction(lcOpts)
-	if i.debug {
+
+	action = lc.ComputeAction(lcOpts)
+	if debug {
 		console.Debugf(applyActionsLogPrefix+" lifecycle: Secondary scan: %v\n", action)
 	}
-	switch action {
-	case lifecycle.DeleteAction, lifecycle.DeleteVersionAction:
-	case lifecycle.TransitionAction, lifecycle.TransitionVersionAction:
-	case lifecycle.DeleteRestoredAction, lifecycle.DeleteRestoredVersionAction:
-	default:
-		// No action.
-		return size
+
+	if action == lifecycle.NoneAction {
+		return action
 	}
 
-	opts := ObjectOptions{}
 	switch action {
 	case lifecycle.DeleteVersionAction, lifecycle.DeleteRestoredVersionAction:
 		// Defensive code, should never happen
 		if obj.VersionID == "" {
-			return size
+			return lifecycle.NoneAction
 		}
-		if rcfg, _ := globalBucketObjectLockSys.Get(i.bucket); rcfg.LockEnabled {
+		if rcfg, _ := globalBucketObjectLockSys.Get(obj.Bucket); rcfg.LockEnabled {
 			locked := enforceRetentionForDeletion(ctx, obj)
 			if locked {
-				if i.debug {
+				if debug {
 					if obj.VersionID != "" {
-						console.Debugf(applyActionsLogPrefix+" lifecycle: %s v(%s) is locked, not deleting\n", i.objectPath(), obj.VersionID)
+						console.Debugf(applyActionsLogPrefix+" lifecycle: %s v(%s) is locked, not deleting\n", obj.Name, obj.VersionID)
 					} else {
-						console.Debugf(applyActionsLogPrefix+" lifecycle: %s is locked, not deleting\n", i.objectPath())
+						console.Debugf(applyActionsLogPrefix+" lifecycle: %s is locked, not deleting\n", obj.Name)
 					}
 				}
-				return size
+				return lifecycle.NoneAction
 			}
 		}
+	}
+
+	return action
+}
+
+func applyTransitionAction(ctx context.Context, action lifecycle.Action, objLayer ObjectLayer, obj ObjectInfo) bool {
+	opts := ObjectOptions{}
+	if obj.TransitionStatus == "" {
+		opts.Versioned = globalBucketVersioningSys.Enabled(obj.Bucket)
 		opts.VersionID = obj.VersionID
-	case lifecycle.DeleteAction, lifecycle.DeleteRestoredAction:
-		opts.Versioned = globalBucketVersioningSys.Enabled(i.bucket)
-	case lifecycle.TransitionAction, lifecycle.TransitionVersionAction:
-		if obj.TransitionStatus == "" {
-			opts.Versioned = globalBucketVersioningSys.Enabled(obj.Bucket)
-			opts.VersionID = obj.VersionID
-			opts.TransitionStatus = lifecycle.TransitionPending
-			if _, err = o.DeleteObject(ctx, obj.Bucket, obj.Name, opts); err != nil {
-				if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-					return 0
-				}
-				// Assume it is still there.
-				logger.LogIf(ctx, err)
-				return size
-			}
-		}
-		globalTransitionState.queueTransitionTask(obj)
-		return 0
-	}
-
-	if obj.TransitionStatus != "" {
-		if err := deleteTransitionedObject(ctx, o, i.bucket, i.objectPath(), lcOpts, action, false); err != nil {
+		opts.TransitionStatus = lifecycle.TransitionPending
+		if _, err := objLayer.DeleteObject(ctx, obj.Bucket, obj.Name, opts); err != nil {
 			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				return 0
+				return false
 			}
+			// Assume it is still there.
 			logger.LogIf(ctx, err)
-			return size
+			return false
 		}
-		// Notification already sent at *deleteTransitionedObject*, return '0' here.
-		return 0
+	}
+	globalTransitionState.queueTransitionTask(obj)
+	return true
+
+}
+
+func applyExpiryOnTransitionedObject(ctx context.Context, objLayer ObjectLayer, obj ObjectInfo, restoredObject bool) bool {
+	lcOpts := lifecycle.ObjectOpts{
+		Name:             obj.Name,
+		UserTags:         obj.UserTags,
+		ModTime:          obj.ModTime,
+		VersionID:        obj.VersionID,
+		DeleteMarker:     obj.DeleteMarker,
+		IsLatest:         obj.IsLatest,
+		NumVersions:      obj.NumVersions,
+		SuccessorModTime: obj.SuccessorModTime,
+		RestoreOngoing:   obj.RestoreOngoing,
+		RestoreExpires:   obj.RestoreExpires,
+		TransitionStatus: obj.TransitionStatus,
 	}
 
-	obj, err = o.DeleteObject(ctx, i.bucket, i.objectPath(), opts)
+	if err := deleteTransitionedObject(ctx, objLayer, obj.Bucket, obj.Name, lcOpts, restoredObject, false); err != nil {
+		if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
+			return false
+		}
+		logger.LogIf(ctx, err)
+		return false
+	}
+	// Notification already sent at *deleteTransitionedObject*, just return 'true' here.
+	return true
+}
+
+func applyExpiryOnNonTransitionedObjects(ctx context.Context, objLayer ObjectLayer, obj ObjectInfo, applyOnVersion bool) bool {
+	opts := ObjectOptions{}
+
+	if applyOnVersion {
+		opts.VersionID = obj.VersionID
+	}
+	if opts.VersionID == "" {
+		opts.Versioned = globalBucketVersioningSys.Enabled(obj.Bucket)
+	}
+
+	obj, err := objLayer.DeleteObject(ctx, obj.Bucket, obj.Name, opts)
 	if err != nil {
 		if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-			return 0
+			return false
 		}
 		// Assume it is still there.
 		logger.LogIf(ctx, err)
-		return size
+		return false
 	}
 
 	eventName := event.ObjectRemovedDelete
@@ -984,20 +1028,42 @@ func (i *crawlItem) applyActions(ctx context.Context, o ObjectLayer, meta action
 	// Notify object deleted event.
 	sendEvent(eventArgs{
 		EventName:  eventName,
-		BucketName: i.bucket,
+		BucketName: obj.Bucket,
 		Object:     obj,
 		Host:       "Internal: [ILM-EXPIRY]",
 	})
-	return 0
+
+	return true
+}
+
+// Apply object, object version, restored object or restored object version action on the given object
+func applyExpiryRule(ctx context.Context, objLayer ObjectLayer, obj ObjectInfo, restoredObject, applyOnVersion bool) bool {
+	if obj.TransitionStatus != "" {
+		return applyExpiryOnTransitionedObject(ctx, objLayer, obj, restoredObject)
+	}
+	return applyExpiryOnNonTransitionedObjects(ctx, objLayer, obj, applyOnVersion)
+}
+
+// Perform actions (removal or transitioning of objects), return true the action is successfully performed
+func applyLifecycleAction(ctx context.Context, action lifecycle.Action, objLayer ObjectLayer, obj ObjectInfo) (success bool) {
+	switch action {
+	case lifecycle.DeleteVersionAction, lifecycle.DeleteAction:
+		success = applyExpiryRule(ctx, objLayer, obj, false, action == lifecycle.DeleteVersionAction)
+	case lifecycle.DeleteRestoredAction, lifecycle.DeleteRestoredVersionAction:
+		success = applyExpiryRule(ctx, objLayer, obj, true, action == lifecycle.DeleteRestoredVersionAction)
+	case lifecycle.TransitionAction, lifecycle.TransitionVersionAction:
+		success = applyTransitionAction(ctx, action, objLayer, obj)
+	}
+	return
 }
 
 // objectPath returns the prefix and object name.
-func (i *crawlItem) objectPath() string {
+func (i *scannerItem) objectPath() string {
 	return path.Join(i.prefix, i.objectName)
 }
 
 // healReplication will heal a scanned item that has failed replication.
-func (i *crawlItem) healReplication(ctx context.Context, o ObjectLayer, oi ObjectInfo, sizeS *sizeSummary) {
+func (i *scannerItem) healReplication(ctx context.Context, o ObjectLayer, oi ObjectInfo, sizeS *sizeSummary) {
 	if oi.DeleteMarker || !oi.VersionPurgeStatus.Empty() {
 		// heal delete marker replication failure or versioned delete replication failure
 		if oi.ReplicationStatus == replication.Pending ||
@@ -1010,10 +1076,10 @@ func (i *crawlItem) healReplication(ctx context.Context, o ObjectLayer, oi Objec
 	switch oi.ReplicationStatus {
 	case replication.Pending:
 		sizeS.pendingSize += oi.Size
-		globalReplicationState.queueReplicaTask(oi)
+		globalReplicationPool.queueReplicaTask(oi)
 	case replication.Failed:
 		sizeS.failedSize += oi.Size
-		globalReplicationState.queueReplicaTask(oi)
+		globalReplicationPool.queueReplicaTask(oi)
 	case replication.Completed, "COMPLETE":
 		sizeS.replicatedSize += oi.Size
 	case replication.Replica:
@@ -1022,7 +1088,7 @@ func (i *crawlItem) healReplication(ctx context.Context, o ObjectLayer, oi Objec
 }
 
 // healReplicationDeletes will heal a scanned deleted item that failed to replicate deletes.
-func (i *crawlItem) healReplicationDeletes(ctx context.Context, o ObjectLayer, oi ObjectInfo) {
+func (i *scannerItem) healReplicationDeletes(ctx context.Context, o ObjectLayer, oi ObjectInfo) {
 	// handle soft delete and permanent delete failures here.
 	if oi.DeleteMarker || !oi.VersionPurgeStatus.Empty() {
 		versionID := ""
@@ -1032,7 +1098,7 @@ func (i *crawlItem) healReplicationDeletes(ctx context.Context, o ObjectLayer, o
 		} else {
 			versionID = oi.VersionID
 		}
-		globalReplicationState.queueReplicaDeleteTask(DeletedObjectVersionInfo{
+		globalReplicationPool.queueReplicaDeleteTask(DeletedObjectVersionInfo{
 			DeletedObject: DeletedObject{
 				ObjectName:                    oi.Name,
 				DeleteMarkerVersionID:         dmVersionID,

cmd/data-update-tracker.go

@@ -80,7 +80,7 @@ func newDataUpdateTracker() *dataUpdateTracker {
 		Current: dataUpdateFilter{
 			idx: 1,
 		},
-		debug:      env.Get(envDataUsageCrawlDebug, config.EnableOff) == config.EnableOn || serverDebugLog,
+		debug:      env.Get(envDataUsageScannerDebug, config.EnableOff) == config.EnableOn || serverDebugLog,
 		input:      make(chan string, dataUpdateTrackerQueueSize),
 		save:       make(chan struct{}, 1),
 		saveExited: make(chan struct{}),

cmd/data-usage-cache.go

@@ -91,7 +91,7 @@ type dataUsageCacheInfo struct {
 	Name       string
 	LastUpdate time.Time
 	NextCycle  uint32
-	// indicates if the disk is being healed and crawler
+	// indicates if the disk is being healed and scanner
 	// should skip healing the disk
 	SkipHealing bool
 	BloomFilter []byte               `msg:"BloomFilter,omitempty"`
@@ -485,7 +485,7 @@ type objectIO interface {
 // Only backend errors are returned as errors.
 // If the object is not found or unable to deserialize d is cleared and nil error is returned.
 func (d *dataUsageCache) load(ctx context.Context, store objectIO, name string) error {
-	r, err := store.GetObjectNInfo(ctx, dataUsageBucket, name, nil, http.Header{}, readLock, ObjectOptions{})
+	r, err := store.GetObjectNInfo(ctx, dataUsageBucket, name, nil, http.Header{}, noLock, ObjectOptions{})
 	if err != nil {
 		switch err.(type) {
 		case ObjectNotFound:
@@ -513,7 +513,7 @@ func (d *dataUsageCache) save(ctx context.Context, store objectIO, name string)
 	}()
 	defer pr.Close()
 
-	r, err := hash.NewReader(pr, -1, "", "", -1, false)
+	r, err := hash.NewReader(pr, -1, "", "", -1)
 	if err != nil {
 		return err
 	}
@@ -521,8 +521,8 @@ func (d *dataUsageCache) save(ctx context.Context, store objectIO, name string)
 	_, err = store.PutObject(ctx,
 		dataUsageBucket,
 		name,
-		NewPutObjReader(r, nil, nil),
-		ObjectOptions{})
+		NewPutObjReader(r),
+		ObjectOptions{NoLock: true})
 	if isErrBucketNotFound(err) {
 		return nil
 	}

cmd/data-usage.go

@@ -20,6 +20,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"net/http"
 
 	jsoniter "github.com/json-iterator/go"
 	"github.com/minio/minio/cmd/logger"
@@ -27,7 +28,7 @@ import (
 )
 
 const (
-	envDataUsageCrawlDebug = "MINIO_DISK_USAGE_CRAWL_DEBUG"
+	envDataUsageScannerDebug = "MINIO_DISK_USAGE_SCANNER_DEBUG"
 
 	dataUsageRoot   = SlashSeparator
 	dataUsageBucket = minioMetaBucket + SlashSeparator + bucketMetaPrefix
@@ -46,12 +47,12 @@ func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dui <-chan
 			continue
 		}
 		size := int64(len(dataUsageJSON))
-		r, err := hash.NewReader(bytes.NewReader(dataUsageJSON), size, "", "", size, false)
+		r, err := hash.NewReader(bytes.NewReader(dataUsageJSON), size, "", "", size)
 		if err != nil {
 			logger.LogIf(ctx, err)
 			continue
 		}
-		_, err = objAPI.PutObject(ctx, dataUsageBucket, dataUsageObjName, NewPutObjReader(r, nil, nil), ObjectOptions{})
+		_, err = objAPI.PutObject(ctx, dataUsageBucket, dataUsageObjName, NewPutObjReader(r), ObjectOptions{})
 		if !isErrBucketNotFound(err) {
 			logger.LogIf(ctx, err)
 		}
@@ -59,20 +60,18 @@ func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dui <-chan
 }
 
 func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (DataUsageInfo, error) {
-	var dataUsageInfoJSON bytes.Buffer
-
-	err := objAPI.GetObject(ctx, dataUsageBucket, dataUsageObjName, 0, -1, &dataUsageInfoJSON, "", ObjectOptions{})
+	r, err := objAPI.GetObjectNInfo(ctx, dataUsageBucket, dataUsageObjName, nil, http.Header{}, readLock, ObjectOptions{})
 	if err != nil {
 		if isErrObjectNotFound(err) || isErrBucketNotFound(err) {
 			return DataUsageInfo{}, nil
 		}
 		return DataUsageInfo{}, toObjectErr(err, dataUsageBucket, dataUsageObjName)
 	}
+	defer r.Close()
 
 	var dataUsageInfo DataUsageInfo
 	var json = jsoniter.ConfigCompatibleWithStandardLibrary
-	err = json.Unmarshal(dataUsageInfoJSON.Bytes(), &dataUsageInfo)
-	if err != nil {
+	if err = json.NewDecoder(r).Decode(&dataUsageInfo); err != nil {
 		return DataUsageInfo{}, err
 	}
 

cmd/data-usage_test.go

@@ -51,7 +51,7 @@ func TestDataUsageUpdate(t *testing.T) {
 	}
 	createUsageTestFiles(t, base, bucket, files)
 
-	getSize := func(item crawlItem) (sizeS sizeSummary, err error) {
+	getSize := func(item scannerItem) (sizeS sizeSummary, err error) {
 		if item.Typ&os.ModeDir == 0 {
 			var s os.FileInfo
 			s, err = os.Stat(item.Path)
@@ -64,7 +64,7 @@ func TestDataUsageUpdate(t *testing.T) {
 		return
 	}
 
-	got, err := crawlDataFolder(context.Background(), base, dataUsageCache{Info: dataUsageCacheInfo{Name: bucket}}, getSize)
+	got, err := scanDataFolder(context.Background(), base, dataUsageCache{Info: dataUsageCacheInfo{Name: bucket}}, getSize)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -185,7 +185,7 @@ func TestDataUsageUpdate(t *testing.T) {
 		},
 	}
 	createUsageTestFiles(t, base, bucket, files)
-	got, err = crawlDataFolder(context.Background(), base, got, getSize)
+	got, err = scanDataFolder(context.Background(), base, got, getSize)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -270,7 +270,7 @@ func TestDataUsageUpdate(t *testing.T) {
 	}
 	// Changed dir must be picked up in this many cycles.
 	for i := 0; i < dataUsageUpdateDirCycles; i++ {
-		got, err = crawlDataFolder(context.Background(), base, got, getSize)
+		got, err = scanDataFolder(context.Background(), base, got, getSize)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -347,7 +347,7 @@ func TestDataUsageUpdatePrefix(t *testing.T) {
 	}
 	createUsageTestFiles(t, base, "", files)
 
-	getSize := func(item crawlItem) (sizeS sizeSummary, err error) {
+	getSize := func(item scannerItem) (sizeS sizeSummary, err error) {
 		if item.Typ&os.ModeDir == 0 {
 			var s os.FileInfo
 			s, err = os.Stat(item.Path)
@@ -359,7 +359,7 @@ func TestDataUsageUpdatePrefix(t *testing.T) {
 		}
 		return
 	}
-	got, err := crawlDataFolder(context.Background(), base, dataUsageCache{Info: dataUsageCacheInfo{Name: "bucket"}}, getSize)
+	got, err := scanDataFolder(context.Background(), base, dataUsageCache{Info: dataUsageCacheInfo{Name: "bucket"}}, getSize)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -469,7 +469,7 @@ func TestDataUsageUpdatePrefix(t *testing.T) {
 		},
 	}
 	createUsageTestFiles(t, base, "", files)
-	got, err = crawlDataFolder(context.Background(), base, got, getSize)
+	got, err = scanDataFolder(context.Background(), base, got, getSize)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -552,7 +552,7 @@ func TestDataUsageUpdatePrefix(t *testing.T) {
 	}
 	// Changed dir must be picked up in this many cycles.
 	for i := 0; i < dataUsageUpdateDirCycles; i++ {
-		got, err = crawlDataFolder(context.Background(), base, got, getSize)
+		got, err = scanDataFolder(context.Background(), base, got, getSize)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -646,7 +646,7 @@ func TestDataUsageCacheSerialize(t *testing.T) {
 	}
 	createUsageTestFiles(t, base, bucket, files)
 
-	getSize := func(item crawlItem) (sizeS sizeSummary, err error) {
+	getSize := func(item scannerItem) (sizeS sizeSummary, err error) {
 		if item.Typ&os.ModeDir == 0 {
 			var s os.FileInfo
 			s, err = os.Stat(item.Path)
@@ -658,7 +658,7 @@ func TestDataUsageCacheSerialize(t *testing.T) {
 		}
 		return
 	}
-	want, err := crawlDataFolder(context.Background(), base, dataUsageCache{Info: dataUsageCacheInfo{Name: bucket}}, getSize)
+	want, err := scanDataFolder(context.Background(), base, dataUsageCache{Info: dataUsageCacheInfo{Name: bucket}}, getSize)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/disk-cache-backend.go

@@ -23,7 +23,6 @@ import (
 	"crypto/rand"
 	"encoding/base64"
 	"encoding/hex"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -103,7 +102,6 @@ func (m *cacheMeta) ToObjectInfo(bucket, object string) (o ObjectInfo) {
 	}
 
 	// We set file info only if its valid.
-	o.ModTime = m.Stat.ModTime
 	o.Size = m.Stat.Size
 	o.ETag = extractETag(m.Meta)
 	o.ContentType = m.Meta["content-type"]
@@ -122,6 +120,12 @@ func (m *cacheMeta) ToObjectInfo(bucket, object string) (o ObjectInfo) {
 			o.Expires = t.UTC()
 		}
 	}
+	if mtime, ok := m.Meta["last-modified"]; ok {
+		if t, e = time.Parse(http.TimeFormat, mtime); e == nil {
+			o.ModTime = t.UTC()
+		}
+	}
+
 	// etag/md5Sum has already been extracted. We need to
 	// remove to avoid it from appearing as part of user-defined metadata
 	o.UserDefined = cleanMetadata(m.Meta)
@@ -264,10 +268,6 @@ func (c *diskCache) toClear() uint64 {
 	return bytesToClear(int64(di.Total), int64(di.Free), uint64(c.quotaPct), uint64(c.lowWatermark), uint64(c.highWatermark))
 }
 
-var (
-	errDoneForNow = errors.New("done for now")
-)
-
 func (c *diskCache) purgeWait(ctx context.Context) {
 	for {
 		select {
@@ -377,7 +377,7 @@ func (c *diskCache) purge(ctx context.Context) {
 		return nil
 	}
 
-	if err := readDirFilterFn(c.dir, filterFn); err != nil {
+	if err := readDirFn(c.dir, filterFn); err != nil {
 		logger.LogIf(ctx, err)
 		return
 	}
@@ -437,7 +437,7 @@ func (c *diskCache) Stat(ctx context.Context, bucket, object string) (oi ObjectI
 func (c *diskCache) statCachedMeta(ctx context.Context, cacheObjPath string) (meta *cacheMeta, partial bool, numHits int, err error) {
 
 	cLock := c.NewNSLockFn(cacheObjPath)
-	if err = cLock.GetRLock(ctx, globalOperationTimeout); err != nil {
+	if ctx, err = cLock.GetRLock(ctx, globalOperationTimeout); err != nil {
 		return
 	}
 
@@ -506,9 +506,7 @@ func (c *diskCache) statCache(ctx context.Context, cacheObjPath string) (meta *c
 	}
 	// get metadata of part.1 if full file has been cached.
 	partial = true
-	fi, err := os.Stat(pathJoin(cacheObjPath, cacheDataFile))
-	if err == nil {
-		meta.Stat.ModTime = atime.Get(fi)
+	if _, err := os.Stat(pathJoin(cacheObjPath, cacheDataFile)); err == nil {
 		partial = false
 	}
 	return meta, partial, meta.Hits, nil
@@ -517,9 +515,11 @@ func (c *diskCache) statCache(ctx context.Context, cacheObjPath string) (meta *c
 // saves object metadata to disk cache
 // incHitsOnly is true if metadata update is incrementing only the hit counter
 func (c *diskCache) SaveMetadata(ctx context.Context, bucket, object string, meta map[string]string, actualSize int64, rs *HTTPRangeSpec, rsFileName string, incHitsOnly bool) error {
+	var err error
 	cachedPath := getCacheSHADir(c.dir, bucket, object)
 	cLock := c.NewNSLockFn(cachedPath)
-	if err := cLock.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = cLock.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return err
 	}
 	defer cLock.Unlock()
@@ -570,7 +570,6 @@ func (c *diskCache) saveMetadata(ctx context.Context, bucket, object string, met
 		}
 	}
 	m.Stat.Size = actualSize
-	m.Stat.ModTime = UTCNow()
 	if !incHitsOnly {
 		// reset meta
 		m.Meta = meta
@@ -697,7 +696,8 @@ func (c *diskCache) Put(ctx context.Context, bucket, object string, data io.Read
 	}
 	cachePath := getCacheSHADir(c.dir, bucket, object)
 	cLock := c.NewNSLockFn(cachePath)
-	if err := cLock.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = cLock.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return oi, err
 	}
 	defer cLock.Unlock()
@@ -911,7 +911,8 @@ func (c *diskCache) bitrotReadFromCache(ctx context.Context, filePath string, of
 func (c *diskCache) Get(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, opts ObjectOptions) (gr *GetObjectReader, numHits int, err error) {
 	cacheObjPath := getCacheSHADir(c.dir, bucket, object)
 	cLock := c.NewNSLockFn(cacheObjPath)
-	if err := cLock.GetRLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = cLock.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return nil, numHits, err
 	}
 
@@ -975,7 +976,8 @@ func (c *diskCache) Get(ctx context.Context, bucket, object string, rs *HTTPRang
 // Deletes the cached object
 func (c *diskCache) delete(ctx context.Context, cacheObjPath string) (err error) {
 	cLock := c.NewNSLockFn(cacheObjPath)
-	if err := cLock.GetLock(ctx, globalOperationTimeout); err != nil {
+	_, err = cLock.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return err
 	}
 	defer cLock.Unlock()
@@ -1023,7 +1025,7 @@ func (c *diskCache) scanCacheWritebackFailures(ctx context.Context) {
 		return nil
 	}
 
-	if err := readDirFilterFn(c.dir, filterFn); err != nil {
+	if err := readDirFn(c.dir, filterFn); err != nil {
 		logger.LogIf(ctx, err)
 		return
 	}

cmd/disk-cache-utils.go

@@ -173,7 +173,11 @@ func backendDownError(err error) bool {
 
 // IsCacheable returns if the object should be saved in the cache.
 func (o ObjectInfo) IsCacheable() bool {
-	return !crypto.IsEncrypted(o.UserDefined) || globalCacheKMS != nil
+	if globalCacheKMS != nil {
+		return true
+	}
+	_, ok := crypto.IsEncrypted(o.UserDefined)
+	return !ok
 }
 
 // reads file cached on disk from offset upto length

cmd/disk-cache.go

@@ -200,6 +200,7 @@ func getMetadata(objInfo ObjectInfo) map[string]string {
 	if !objInfo.Expires.Equal(timeSentinel) {
 		metadata["expires"] = objInfo.Expires.Format(http.TimeFormat)
 	}
+	metadata["last-modified"] = objInfo.ModTime.Format(http.TimeFormat)
 	for k, v := range objInfo.UserDefined {
 		metadata[k] = v
 	}
@@ -704,14 +705,14 @@ func (c *cacheObjects) uploadObject(ctx context.Context, oi ObjectInfo) {
 	if st == CommitComplete || st.String() == "" {
 		return
 	}
-	hashReader, err := hash.NewReader(cReader, oi.Size, "", "", oi.Size, globalCLIContext.StrictS3Compat)
+	hashReader, err := hash.NewReader(cReader, oi.Size, "", "", oi.Size)
 	if err != nil {
 		return
 	}
 	var opts ObjectOptions
 	opts.UserDefined = make(map[string]string)
 	opts.UserDefined[xhttp.ContentMD5] = oi.UserDefined["content-md5"]
-	objInfo, err := c.InnerPutObjectFn(ctx, oi.Bucket, oi.Name, NewPutObjReader(hashReader, nil, nil), opts)
+	objInfo, err := c.InnerPutObjectFn(ctx, oi.Bucket, oi.Name, NewPutObjReader(hashReader), opts)
 	wbCommitStatus := CommitComplete
 	if err != nil {
 		wbCommitStatus = CommitFailed

cmd/disk-cache_test.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"testing"
+	"time"
 )
 
 // Tests ToObjectInfo function.
@@ -27,7 +28,7 @@ func TestCacheMetadataObjInfo(t *testing.T) {
 	if objInfo.Size != 0 {
 		t.Fatal("Unexpected object info value for Size", objInfo.Size)
 	}
-	if !objInfo.ModTime.Equal(timeSentinel) {
+	if !objInfo.ModTime.Equal(time.Time{}) {
 		t.Fatal("Unexpected object info value for ModTime ", objInfo.ModTime)
 	}
 	if objInfo.IsDir {

cmd/encryption-v1.go

@@ -20,6 +20,7 @@ import (
 	"bufio"
 	"crypto/hmac"
 	"crypto/rand"
+	"crypto/sha256"
 	"crypto/subtle"
 	"encoding/binary"
 	"encoding/hex"
@@ -33,7 +34,6 @@ import (
 	"github.com/minio/minio/cmd/crypto"
 	xhttp "github.com/minio/minio/cmd/http"
 	"github.com/minio/minio/cmd/logger"
-	sha256 "github.com/minio/sha256-simd"
 	"github.com/minio/sio"
 )
 
@@ -247,56 +247,45 @@ func EncryptRequest(content io.Reader, r *http.Request, bucket, object string, m
 }
 
 func decryptObjectInfo(key []byte, bucket, object string, metadata map[string]string) ([]byte, error) {
-	switch {
-	default:
-		return nil, errObjectTampered
-	case crypto.S3.IsEncrypted(metadata) && isCacheEncrypted(metadata):
-		if globalCacheKMS == nil {
+	switch kind, _ := crypto.IsEncrypted(metadata); kind {
+	case crypto.S3:
+		var KMS crypto.KMS = GlobalKMS
+		if isCacheEncrypted(metadata) {
+			KMS = globalCacheKMS
+		}
+		if KMS == nil {
 			return nil, errKMSNotConfigured
 		}
-		keyID, kmsKey, sealedKey, err := crypto.S3.ParseMetadata(metadata)
+		objectKey, err := crypto.S3.UnsealObjectKey(KMS, metadata, bucket, object)
 		if err != nil {
 			return nil, err
 		}
-		extKey, err := globalCacheKMS.UnsealKey(keyID, kmsKey, crypto.Context{bucket: path.Join(bucket, object)})
-		if err != nil {
-			return nil, err
-		}
-		var objectKey crypto.ObjectKey
-		if err = objectKey.Unseal(extKey, sealedKey, crypto.S3.String(), bucket, object); err != nil {
-			return nil, err
-		}
 		return objectKey[:], nil
-	case crypto.S3.IsEncrypted(metadata):
+	case crypto.S3KMS:
 		if GlobalKMS == nil {
 			return nil, errKMSNotConfigured
 		}
-		keyID, kmsKey, sealedKey, err := crypto.S3.ParseMetadata(metadata)
-
+		objectKey, err := crypto.S3KMS.UnsealObjectKey(GlobalKMS, metadata, bucket, object)
 		if err != nil {
 			return nil, err
 		}
-		extKey, err := GlobalKMS.UnsealKey(keyID, kmsKey, crypto.Context{bucket: path.Join(bucket, object)})
-		if err != nil {
-			return nil, err
-		}
-		var objectKey crypto.ObjectKey
-		if err = objectKey.Unseal(extKey, sealedKey, crypto.S3.String(), bucket, object); err != nil {
-			return nil, err
-		}
 		return objectKey[:], nil
-	case crypto.SSEC.IsEncrypted(metadata):
-		var extKey [32]byte
-		copy(extKey[:], key)
+	case crypto.SSEC:
 		sealedKey, err := crypto.SSEC.ParseMetadata(metadata)
 		if err != nil {
 			return nil, err
 		}
-		var objectKey crypto.ObjectKey
+		var (
+			objectKey crypto.ObjectKey
+			extKey    [32]byte
+		)
+		copy(extKey[:], key)
 		if err = objectKey.Unseal(extKey, sealedKey, crypto.SSEC.String(), bucket, object); err != nil {
 			return nil, err
 		}
 		return objectKey[:], nil
+	default:
+		return nil, errObjectTampered
 	}
 }
 
@@ -516,7 +505,7 @@ func (d *DecryptBlocksReader) Read(p []byte) (int, error) {
 // It returns an error if the object is not encrypted or marked as encrypted
 // but has an invalid size.
 func (o *ObjectInfo) DecryptedSize() (int64, error) {
-	if !crypto.IsEncrypted(o.UserDefined) {
+	if _, ok := crypto.IsEncrypted(o.UserDefined); !ok {
 		return 0, errors.New("Cannot compute decrypted size of an unencrypted object")
 	}
 	if !isEncryptedMultipart(*o) {
@@ -649,7 +638,7 @@ func tryDecryptETag(key []byte, encryptedETag string, ssec bool) string {
 // requested range starts, along with the DARE sequence number within
 // that part. For single part objects, the partStart will be 0.
 func (o *ObjectInfo) GetDecryptedRange(rs *HTTPRangeSpec) (encOff, encLength, skipLen int64, seqNumber uint32, partStart int, err error) {
-	if !crypto.IsEncrypted(o.UserDefined) {
+	if _, ok := crypto.IsEncrypted(o.UserDefined); !ok {
 		err = errors.New("Object is not encrypted")
 		return
 	}
@@ -796,7 +785,7 @@ func DecryptObjectInfo(info *ObjectInfo, r *http.Request) (encrypted bool, err e
 		}
 	}
 
-	encrypted = crypto.IsEncrypted(info.UserDefined)
+	_, encrypted = crypto.IsEncrypted(info.UserDefined)
 	if !encrypted && crypto.SSEC.IsRequested(headers) && r.Header.Get(xhttp.AmzCopySource) == "" {
 		return false, errInvalidEncryptionParameters
 	}
@@ -818,7 +807,7 @@ func DecryptObjectInfo(info *ObjectInfo, r *http.Request) (encrypted bool, err e
 			return encrypted, err
 		}
 
-		if crypto.IsEncrypted(info.UserDefined) && !crypto.IsMultiPart(info.UserDefined) {
+		if _, ok := crypto.IsEncrypted(info.UserDefined); ok && !crypto.IsMultiPart(info.UserDefined) {
 			info.ETag = getDecryptedETag(headers, *info, false)
 		}
 	}

cmd/encryption-v1_test.go

@@ -129,7 +129,7 @@ func TestDecryptObjectInfo(t *testing.T) {
 	for i, test := range decryptObjectInfoTests {
 		if encrypted, err := DecryptObjectInfo(&test.info, test.request); err != test.expErr {
 			t.Errorf("Test %d: Decryption returned wrong error code: got %d , want %d", i, err, test.expErr)
-		} else if enc := crypto.IsEncrypted(test.info.UserDefined); encrypted && enc != encrypted {
+		} else if _, enc := crypto.IsEncrypted(test.info.UserDefined); encrypted && enc != encrypted {
 			t.Errorf("Test %d: Decryption thinks object is encrypted but it is not", i)
 		} else if !encrypted && enc != encrypted {
 			t.Errorf("Test %d: Decryption thinks object is not encrypted but it is", i)

cmd/erasure-common.go

@@ -23,12 +23,22 @@ import (
 	"github.com/minio/minio/pkg/sync/errgroup"
 )
 
+func (er erasureObjects) getLocalDisks() (localDisks []StorageAPI) {
+	disks := er.getDisks()
+	for _, disk := range disks {
+		if disk != nil && disk.IsLocal() {
+			localDisks = append(localDisks, disk)
+		}
+	}
+	return localDisks
+}
+
 func (er erasureObjects) getLoadBalancedLocalDisks() (newDisks []StorageAPI) {
 	disks := er.getDisks()
 	// Based on the random shuffling return back randomized disks.
 	for _, i := range hashOrder(UTCNow().String(), len(disks)) {
 		if disks[i-1] != nil && disks[i-1].IsLocal() {
-			if !disks[i-1].Healing() && disks[i-1].IsOnline() {
+			if disks[i-1].Healing() == nil && disks[i-1].IsOnline() {
 				newDisks = append(newDisks, disks[i-1])
 			}
 		}

cmd/erasure-decode_test.go

@@ -41,46 +41,46 @@ var erasureDecodeTests = []struct {
 	algorithm                    BitrotAlgorithm
 	shouldFail, shouldFailQuorum bool
 }{
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},             // 0
-	{dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},                 // 1
-	{dataBlocks: 4, onDisks: 8, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 2
-	{dataBlocks: 5, onDisks: 10, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 1, length: oneMiByte - 1, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},        // 3
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},             // 0
+	{dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},                 // 1
+	{dataBlocks: 4, onDisks: 8, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 2
+	{dataBlocks: 5, onDisks: 10, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 1, length: oneMiByte - 1, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},        // 3
 	{dataBlocks: 6, onDisks: 12, offDisks: 0, blocksize: int64(oneMiByte), data: oneMiByte, offset: oneMiByte, length: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},
 	// 4
 	{dataBlocks: 7, onDisks: 14, offDisks: 0, blocksize: int64(oneMiByte), data: oneMiByte, offset: 3, length: 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                    // 5
 	{dataBlocks: 8, onDisks: 16, offDisks: 0, blocksize: int64(oneMiByte), data: oneMiByte, offset: 4, length: 8 * 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 6
-	{dataBlocks: 7, onDisks: 14, offDisks: 7, blocksize: int64(blockSizeV1), data: oneMiByte, offset: oneMiByte, length: 1, algorithm: DefaultBitrotAlgorithm, shouldFail: true, shouldFailQuorum: false},              // 7
-	{dataBlocks: 6, onDisks: 12, offDisks: 6, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},             // 8
+	{dataBlocks: 7, onDisks: 14, offDisks: 7, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte, length: 1, algorithm: DefaultBitrotAlgorithm, shouldFail: true, shouldFailQuorum: false},              // 7
+	{dataBlocks: 6, onDisks: 12, offDisks: 6, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},             // 8
 	{dataBlocks: 5, onDisks: 10, offDisks: 5, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                           // 9
-	{dataBlocks: 4, onDisks: 8, offDisks: 4, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},                              // 10
+	{dataBlocks: 4, onDisks: 8, offDisks: 4, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},                              // 10
 	{dataBlocks: 3, onDisks: 6, offDisks: 3, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 11
-	{dataBlocks: 2, onDisks: 4, offDisks: 2, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},              // 12
+	{dataBlocks: 2, onDisks: 4, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},              // 12
 	{dataBlocks: 2, onDisks: 4, offDisks: 1, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 13
 	{dataBlocks: 3, onDisks: 6, offDisks: 2, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 14
 	{dataBlocks: 4, onDisks: 8, offDisks: 3, blocksize: int64(2 * oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},            // 15
 	{dataBlocks: 5, onDisks: 10, offDisks: 6, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                // 16
-	{dataBlocks: 5, onDisks: 10, offDisks: 2, blocksize: int64(blockSizeV1), data: 2 * oneMiByte, offset: oneMiByte, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 17
-	{dataBlocks: 5, onDisks: 10, offDisks: 1, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                         // 18
-	{dataBlocks: 6, onDisks: 12, offDisks: 3, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},
+	{dataBlocks: 5, onDisks: 10, offDisks: 2, blocksize: int64(blockSizeV2), data: 2 * oneMiByte, offset: oneMiByte, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 17
+	{dataBlocks: 5, onDisks: 10, offDisks: 1, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                         // 18
+	{dataBlocks: 6, onDisks: 12, offDisks: 3, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},
 	// 19
-	{dataBlocks: 6, onDisks: 12, offDisks: 7, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                                             // 20
-	{dataBlocks: 8, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                            // 21
+	{dataBlocks: 6, onDisks: 12, offDisks: 7, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                                             // 20
+	{dataBlocks: 8, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                            // 21
 	{dataBlocks: 8, onDisks: 16, offDisks: 9, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                                               // 22
-	{dataBlocks: 8, onDisks: 16, offDisks: 7, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                            // 23
-	{dataBlocks: 2, onDisks: 4, offDisks: 1, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                             // 24
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                             // 25
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(blockSizeV1) + 1, offset: 0, length: int64(blockSizeV1) + 1, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                               // 26
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 12, length: int64(blockSizeV1) + 17, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                             // 27
-	{dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 1023, length: int64(blockSizeV1) + 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},             // 28
-	{dataBlocks: 4, onDisks: 8, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 11, length: int64(blockSizeV1) + 2*1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},             // 29
-	{dataBlocks: 6, onDisks: 12, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 512, length: int64(blockSizeV1) + 8*1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},           // 30
-	{dataBlocks: 8, onDisks: 16, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: int64(blockSizeV1), length: int64(blockSizeV1) - 1, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 31
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(oneMiByte), offset: -1, length: 3, algorithm: DefaultBitrotAlgorithm, shouldFail: true, shouldFailQuorum: false},                                              // 32
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(oneMiByte), offset: 1024, length: -1, algorithm: DefaultBitrotAlgorithm, shouldFail: true, shouldFailQuorum: false},                                           // 33
-	{dataBlocks: 4, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV1), data: int64(blockSizeV1), offset: 0, length: int64(blockSizeV1), algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                                       // 34
-	{dataBlocks: 4, onDisks: 6, offDisks: 1, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 12, length: int64(blockSizeV1) + 17, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                             // 35
-	{dataBlocks: 4, onDisks: 6, offDisks: 3, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 1023, length: int64(blockSizeV1) + 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},              // 36
-	{dataBlocks: 8, onDisks: 12, offDisks: 4, blocksize: int64(blockSizeV1), data: int64(2 * blockSizeV1), offset: 11, length: int64(blockSizeV1) + 2*1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},            // 37
+	{dataBlocks: 8, onDisks: 16, offDisks: 7, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                            // 23
+	{dataBlocks: 2, onDisks: 4, offDisks: 1, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                             // 24
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, length: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                                             // 25
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(blockSizeV2) + 1, offset: 0, length: int64(blockSizeV2) + 1, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                               // 26
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 12, length: int64(blockSizeV2) + 17, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                             // 27
+	{dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 1023, length: int64(blockSizeV2) + 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},             // 28
+	{dataBlocks: 4, onDisks: 8, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 11, length: int64(blockSizeV2) + 2*1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},             // 29
+	{dataBlocks: 6, onDisks: 12, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 512, length: int64(blockSizeV2) + 8*1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},           // 30
+	{dataBlocks: 8, onDisks: 16, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: int64(blockSizeV2), length: int64(blockSizeV2) - 1, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 31
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(oneMiByte), offset: -1, length: 3, algorithm: DefaultBitrotAlgorithm, shouldFail: true, shouldFailQuorum: false},                                              // 32
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(oneMiByte), offset: 1024, length: -1, algorithm: DefaultBitrotAlgorithm, shouldFail: true, shouldFailQuorum: false},                                           // 33
+	{dataBlocks: 4, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV2), data: int64(blockSizeV2), offset: 0, length: int64(blockSizeV2), algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                                       // 34
+	{dataBlocks: 4, onDisks: 6, offDisks: 1, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 12, length: int64(blockSizeV2) + 17, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                             // 35
+	{dataBlocks: 4, onDisks: 6, offDisks: 3, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 1023, length: int64(blockSizeV2) + 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},              // 36
+	{dataBlocks: 8, onDisks: 12, offDisks: 4, blocksize: int64(blockSizeV2), data: int64(2 * blockSizeV2), offset: 11, length: int64(blockSizeV2) + 2*1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},            // 37
 }
 
 func TestErasureDecode(t *testing.T) {
@@ -288,13 +288,13 @@ func TestErasureDecodeRandomOffsetLength(t *testing.T) {
 // Benchmarks
 
 func benchmarkErasureDecode(data, parity, dataDown, parityDown int, size int64, b *testing.B) {
-	setup, err := newErasureTestSetup(data, parity, blockSizeV1)
+	setup, err := newErasureTestSetup(data, parity, blockSizeV2)
 	if err != nil {
 		b.Fatalf("failed to create test setup: %v", err)
 	}
 	defer setup.Remove()
 	disks := setup.disks
-	erasure, err := NewErasure(context.Background(), data, parity, blockSizeV1)
+	erasure, err := NewErasure(context.Background(), data, parity, blockSizeV2)
 	if err != nil {
 		b.Fatalf("failed to create ErasureStorage: %v", err)
 	}
@@ -308,7 +308,7 @@ func benchmarkErasureDecode(data, parity, dataDown, parityDown int, size int64,
 	}
 
 	content := make([]byte, size)
-	buffer := make([]byte, blockSizeV1, 2*blockSizeV1)
+	buffer := make([]byte, blockSizeV2, 2*blockSizeV2)
 	_, err = erasure.Encode(context.Background(), bytes.NewReader(content), writers, buffer, erasure.dataBlocks+1)
 	closeBitrotWriters(writers)
 	if err != nil {

cmd/erasure-encode_test.go

@@ -62,26 +62,26 @@ var erasureEncodeTests = []struct {
 	algorithm                    BitrotAlgorithm
 	shouldFail, shouldFailQuorum bool
 }{
-	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                             // 0
-	{dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 1, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},                                 // 1
-	{dataBlocks: 4, onDisks: 8, offDisks: 2, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                 // 2
-	{dataBlocks: 5, onDisks: 10, offDisks: 3, blocksize: int64(blockSizeV1), data: oneMiByte, offset: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                    // 3
-	{dataBlocks: 6, onDisks: 12, offDisks: 4, blocksize: int64(blockSizeV1), data: oneMiByte, offset: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                    // 4
-	{dataBlocks: 7, onDisks: 14, offDisks: 5, blocksize: int64(blockSizeV1), data: 0, offset: 0, shouldFail: false, algorithm: SHA256, shouldFailQuorum: false},                                        // 5
-	{dataBlocks: 8, onDisks: 16, offDisks: 7, blocksize: int64(blockSizeV1), data: 0, offset: 0, shouldFail: false, algorithm: DefaultBitrotAlgorithm, shouldFailQuorum: false},                        // 6
-	{dataBlocks: 2, onDisks: 4, offDisks: 2, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: true},                              // 7
-	{dataBlocks: 4, onDisks: 8, offDisks: 4, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: SHA256, shouldFail: false, shouldFailQuorum: true},                                  // 8
-	{dataBlocks: 7, onDisks: 14, offDisks: 7, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                 // 9
-	{dataBlocks: 8, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                 // 10
+	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                             // 0
+	{dataBlocks: 3, onDisks: 6, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 1, algorithm: SHA256, shouldFail: false, shouldFailQuorum: false},                                 // 1
+	{dataBlocks: 4, onDisks: 8, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                 // 2
+	{dataBlocks: 5, onDisks: 10, offDisks: 3, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                    // 3
+	{dataBlocks: 6, onDisks: 12, offDisks: 4, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},                    // 4
+	{dataBlocks: 7, onDisks: 14, offDisks: 5, blocksize: int64(blockSizeV2), data: 0, offset: 0, shouldFail: false, algorithm: SHA256, shouldFailQuorum: false},                                        // 5
+	{dataBlocks: 8, onDisks: 16, offDisks: 7, blocksize: int64(blockSizeV2), data: 0, offset: 0, shouldFail: false, algorithm: DefaultBitrotAlgorithm, shouldFailQuorum: false},                        // 6
+	{dataBlocks: 2, onDisks: 4, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: true},                              // 7
+	{dataBlocks: 4, onDisks: 8, offDisks: 4, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: SHA256, shouldFail: false, shouldFailQuorum: true},                                  // 8
+	{dataBlocks: 7, onDisks: 14, offDisks: 7, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                 // 9
+	{dataBlocks: 8, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                 // 10
 	{dataBlocks: 5, onDisks: 10, offDisks: 3, blocksize: int64(oneMiByte), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                  // 11
-	{dataBlocks: 3, onDisks: 6, offDisks: 1, blocksize: int64(blockSizeV1), data: oneMiByte, offset: oneMiByte / 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},     // 12
+	{dataBlocks: 3, onDisks: 6, offDisks: 1, blocksize: int64(blockSizeV2), data: oneMiByte, offset: oneMiByte / 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},     // 12
 	{dataBlocks: 2, onDisks: 4, offDisks: 0, blocksize: int64(oneMiByte / 2), data: oneMiByte, offset: oneMiByte/2 + 1, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false}, // 13
 	{dataBlocks: 4, onDisks: 8, offDisks: 0, blocksize: int64(oneMiByte - 1), data: oneMiByte, offset: oneMiByte - 1, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},               // 14
-	{dataBlocks: 8, onDisks: 12, offDisks: 2, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 15
-	{dataBlocks: 8, onDisks: 10, offDisks: 1, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 16
-	{dataBlocks: 10, onDisks: 14, offDisks: 0, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 17, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},              // 17
+	{dataBlocks: 8, onDisks: 12, offDisks: 2, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 15
+	{dataBlocks: 8, onDisks: 10, offDisks: 1, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                // 16
+	{dataBlocks: 10, onDisks: 14, offDisks: 0, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 17, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},              // 17
 	{dataBlocks: 2, onDisks: 6, offDisks: 2, blocksize: int64(oneMiByte), data: oneMiByte, offset: oneMiByte / 2, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},       // 18
-	{dataBlocks: 10, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV1), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                // 19
+	{dataBlocks: 10, onDisks: 16, offDisks: 8, blocksize: int64(blockSizeV2), data: oneMiByte, offset: 0, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: true},                // 19
 }
 
 func TestErasureEncode(t *testing.T) {
@@ -166,17 +166,17 @@ func TestErasureEncode(t *testing.T) {
 // Benchmarks
 
 func benchmarkErasureEncode(data, parity, dataDown, parityDown int, size int64, b *testing.B) {
-	setup, err := newErasureTestSetup(data, parity, blockSizeV1)
+	setup, err := newErasureTestSetup(data, parity, blockSizeV2)
 	if err != nil {
 		b.Fatalf("failed to create test setup: %v", err)
 	}
 	defer setup.Remove()
-	erasure, err := NewErasure(context.Background(), data, parity, blockSizeV1)
+	erasure, err := NewErasure(context.Background(), data, parity, blockSizeV2)
 	if err != nil {
 		b.Fatalf("failed to create ErasureStorage: %v", err)
 	}
 	disks := setup.disks
-	buffer := make([]byte, blockSizeV1, 2*blockSizeV1)
+	buffer := make([]byte, blockSizeV2, 2*blockSizeV2)
 	content := make([]byte, size)
 
 	for i := 0; i < dataDown; i++ {

cmd/erasure-heal_test.go

@@ -39,26 +39,26 @@ var erasureHealTests = []struct {
 	algorithm       BitrotAlgorithm
 	shouldFail      bool
 }{
-	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: SHA256, shouldFail: false},                   // 0
-	{dataBlocks: 3, disks: 6, offDisks: 2, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},               // 1
-	{dataBlocks: 4, disks: 8, offDisks: 2, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},               // 2
-	{dataBlocks: 5, disks: 10, offDisks: 3, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 3
-	{dataBlocks: 6, disks: 12, offDisks: 2, badDisks: 3, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: SHA256, shouldFail: false},                  // 4
-	{dataBlocks: 7, disks: 14, offDisks: 4, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 5
-	{dataBlocks: 8, disks: 16, offDisks: 6, badDisks: 1, badStaleDisks: 1, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 6
+	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: SHA256, shouldFail: false},                   // 0
+	{dataBlocks: 3, disks: 6, offDisks: 2, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},               // 1
+	{dataBlocks: 4, disks: 8, offDisks: 2, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},               // 2
+	{dataBlocks: 5, disks: 10, offDisks: 3, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 3
+	{dataBlocks: 6, disks: 12, offDisks: 2, badDisks: 3, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: SHA256, shouldFail: false},                  // 4
+	{dataBlocks: 7, disks: 14, offDisks: 4, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 5
+	{dataBlocks: 8, disks: 16, offDisks: 6, badDisks: 1, badStaleDisks: 1, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 6
 	{dataBlocks: 7, disks: 14, offDisks: 2, badDisks: 3, badStaleDisks: 0, blocksize: int64(oneMiByte / 2), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},            // 7
 	{dataBlocks: 6, disks: 12, offDisks: 1, badDisks: 0, badStaleDisks: 1, blocksize: int64(oneMiByte - 1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true}, // 8
 	{dataBlocks: 5, disks: 10, offDisks: 3, badDisks: 0, badStaleDisks: 3, blocksize: int64(oneMiByte / 2), size: oneMiByte, algorithm: SHA256, shouldFail: true},                 // 9
-	{dataBlocks: 4, disks: 8, offDisks: 1, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},   // 10
-	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 1, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true},    // 11
-	{dataBlocks: 6, disks: 12, offDisks: 8, badDisks: 3, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true},   // 12
-	{dataBlocks: 7, disks: 14, offDisks: 3, badDisks: 4, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},              // 13
-	{dataBlocks: 7, disks: 14, offDisks: 6, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 14
-	{dataBlocks: 8, disks: 16, offDisks: 4, badDisks: 5, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true},   // 15
-	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},   // 16
-	{dataBlocks: 12, disks: 16, offDisks: 2, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false}, // 17
-	{dataBlocks: 6, disks: 8, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},               // 18
-	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV1), size: oneMiByte * 64, algorithm: SHA256, shouldFail: false},              // 19
+	{dataBlocks: 4, disks: 8, offDisks: 1, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},   // 10
+	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 1, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true},    // 11
+	{dataBlocks: 6, disks: 12, offDisks: 8, badDisks: 3, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true},   // 12
+	{dataBlocks: 7, disks: 14, offDisks: 3, badDisks: 4, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},              // 13
+	{dataBlocks: 7, disks: 14, offDisks: 6, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},  // 14
+	{dataBlocks: 8, disks: 16, offDisks: 4, badDisks: 5, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: true},   // 15
+	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},   // 16
+	{dataBlocks: 12, disks: 16, offDisks: 2, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false}, // 17
+	{dataBlocks: 6, disks: 8, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: BLAKE2b512, shouldFail: false},               // 18
+	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte * 64, algorithm: SHA256, shouldFail: false},              // 19
 }
 
 func TestErasureHeal(t *testing.T) {

cmd/erasure-healing.go

@@ -239,13 +239,6 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 	storageDisks := er.getDisks()
 	storageEndpoints := er.getEndpoints()
 
-	// List of disks having latest version of the object er.meta
-	// (by modtime).
-	latestDisks, modTime := listOnlineDisks(storageDisks, partsMetadata, errs)
-
-	// List of disks having all parts as per latest er.meta.
-	availableDisks, dataErrs := disksWithAllParts(ctx, latestDisks, partsMetadata, errs, bucket, object, scanMode)
-
 	// Initialize heal result object
 	result = madmin.HealResultItem{
 		Type:         madmin.HealItemObject,
@@ -256,6 +249,21 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 		DataBlocks:   len(storageDisks) - er.defaultParityCount,
 	}
 
+	if !opts.NoLock {
+		lk := er.NewNSLock(bucket, object)
+		if ctx, err = lk.GetLock(ctx, globalOperationTimeout); err != nil {
+			return result, err
+		}
+		defer lk.Unlock()
+	}
+
+	// List of disks having latest version of the object er.meta
+	// (by modtime).
+	latestDisks, modTime := listOnlineDisks(storageDisks, partsMetadata, errs)
+
+	// List of disks having all parts as per latest er.meta.
+	availableDisks, dataErrs := disksWithAllParts(ctx, latestDisks, partsMetadata, errs, bucket, object, scanMode)
+
 	// Loop to find number of disks with valid data, per-drive
 	// data state and a list of outdated disks on which data needs
 	// to be healed.
@@ -709,7 +717,7 @@ func (er erasureObjects) purgeObjectDangling(ctx context.Context, bucket, object
 			if versionID == "" {
 				err = er.deleteObject(ctx, bucket, object, writeQuorum)
 			} else {
-				err = er.deleteObjectVersion(ctx, bucket, object, writeQuorum, FileInfo{VersionID: versionID})
+				err = er.deleteObjectVersion(ctx, bucket, object, writeQuorum, FileInfo{VersionID: versionID}, false)
 			}
 
 			// If Delete was successful, make sure to return the appropriate error

cmd/erasure-metadata-utils_test.go

@@ -18,6 +18,9 @@ package cmd
 
 import (
 	"context"
+	"encoding/hex"
+	"fmt"
+	"math/rand"
 	"reflect"
 	"testing"
 )
@@ -199,3 +202,22 @@ func TestEvalDisks(t *testing.T) {
 	z := objLayer.(*erasureServerPools)
 	testShuffleDisks(t, z)
 }
+
+func Test_hashOrder(t *testing.T) {
+	for x := 1; x < 17; x++ {
+		t.Run(fmt.Sprintf("%d", x), func(t *testing.T) {
+			var first [17]int
+			rng := rand.New(rand.NewSource(0))
+			var tmp [16]byte
+			rng.Read(tmp[:])
+			prefix := hex.EncodeToString(tmp[:])
+			for i := 0; i < 10000; i++ {
+				rng.Read(tmp[:])
+
+				y := hashOrder(fmt.Sprintf("%s/%x", prefix, hex.EncodeToString(tmp[:3])), x)
+				first[y[0]]++
+			}
+			t.Log("first:", first[:x])
+		})
+	}
+}

cmd/erasure-metadata.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"context"
+	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
 	"net/http"
@@ -28,7 +29,6 @@ import (
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/bucket/replication"
 	"github.com/minio/minio/pkg/sync/errgroup"
-	"github.com/minio/sha256-simd"
 )
 
 const erasureAlgorithm = "rs-vandermonde"
@@ -102,23 +102,26 @@ func (fi FileInfo) IsValid() bool {
 func (fi FileInfo) ToObjectInfo(bucket, object string) ObjectInfo {
 	object = decodeDirObject(object)
 	versionID := fi.VersionID
-	if globalBucketVersioningSys.Enabled(bucket) && versionID == "" {
+	if (globalBucketVersioningSys.Enabled(bucket) || globalBucketVersioningSys.Suspended(bucket)) && versionID == "" {
 		versionID = nullVersionID
 	}
 
 	objInfo := ObjectInfo{
-		IsDir:           HasSuffix(object, SlashSeparator),
-		Bucket:          bucket,
-		Name:            object,
-		VersionID:       versionID,
-		IsLatest:        fi.IsLatest,
-		DeleteMarker:    fi.Deleted,
-		Size:            fi.Size,
-		ModTime:         fi.ModTime,
-		Legacy:          fi.XLV1,
-		ContentType:     fi.Metadata["content-type"],
-		ContentEncoding: fi.Metadata["content-encoding"],
+		IsDir:            HasSuffix(object, SlashSeparator),
+		Bucket:           bucket,
+		Name:             object,
+		VersionID:        versionID,
+		IsLatest:         fi.IsLatest,
+		DeleteMarker:     fi.Deleted,
+		Size:             fi.Size,
+		ModTime:          fi.ModTime,
+		Legacy:           fi.XLV1,
+		ContentType:      fi.Metadata["content-type"],
+		ContentEncoding:  fi.Metadata["content-encoding"],
+		NumVersions:      fi.NumVersions,
+		SuccessorModTime: fi.SuccessorModTime,
 	}
+
 	// Update expires
 	var (
 		t time.Time

cmd/erasure-multipart.go

@@ -20,10 +20,12 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"os"
 	"path"
 	"sort"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/minio/minio-go/v7/pkg/set"
@@ -91,50 +93,85 @@ func (er erasureObjects) removeObjectPart(bucket, object, uploadID, dataDir stri
 // Clean-up the old multipart uploads. Should be run in a Go routine.
 func (er erasureObjects) cleanupStaleUploads(ctx context.Context, expiry time.Duration) {
 	// run multiple cleanup's local to this server.
+	var wg sync.WaitGroup
 	for _, disk := range er.getLoadBalancedLocalDisks() {
 		if disk != nil {
-			er.cleanupStaleUploadsOnDisk(ctx, disk, expiry)
-			return
+			wg.Add(1)
+			go func(disk StorageAPI) {
+				defer wg.Done()
+				er.cleanupStaleUploadsOnDisk(ctx, disk, expiry)
+			}(disk)
 		}
 	}
+	wg.Wait()
+}
+
+func (er erasureObjects) renameAll(ctx context.Context, bucket, prefix string) {
+	var wg sync.WaitGroup
+	for _, disk := range er.getDisks() {
+		if disk == nil {
+			continue
+		}
+		wg.Add(1)
+		go func(disk StorageAPI) {
+			defer wg.Done()
+			disk.RenameFile(ctx, bucket, prefix, minioMetaTmpBucket, mustGetUUID())
+		}(disk)
+	}
+	wg.Wait()
+}
+
+func (er erasureObjects) deleteAll(ctx context.Context, bucket, prefix string) {
+	var wg sync.WaitGroup
+	for _, disk := range er.getDisks() {
+		if disk == nil {
+			continue
+		}
+		wg.Add(1)
+		go func(disk StorageAPI) {
+			defer wg.Done()
+			disk.Delete(ctx, bucket, prefix, true)
+		}(disk)
+	}
+	wg.Wait()
 }
 
 // Remove the old multipart uploads on the given disk.
 func (er erasureObjects) cleanupStaleUploadsOnDisk(ctx context.Context, disk StorageAPI, expiry time.Duration) {
 	now := time.Now()
-	shaDirs, err := disk.ListDir(ctx, minioMetaMultipartBucket, "", -1)
-	if err != nil {
-		return
-	}
-	for _, shaDir := range shaDirs {
-		uploadIDDirs, err := disk.ListDir(ctx, minioMetaMultipartBucket, shaDir, -1)
-		if err != nil {
-			continue
-		}
-		for _, uploadIDDir := range uploadIDDirs {
+	diskPath := disk.Endpoint().Path
+
+	readDirFn(pathJoin(diskPath, minioMetaMultipartBucket), func(shaDir string, typ os.FileMode) error {
+		return readDirFn(pathJoin(diskPath, minioMetaMultipartBucket, shaDir), func(uploadIDDir string, typ os.FileMode) error {
 			uploadIDPath := pathJoin(shaDir, uploadIDDir)
 			fi, err := disk.ReadVersion(ctx, minioMetaMultipartBucket, uploadIDPath, "", false)
 			if err != nil {
-				continue
+				return nil
 			}
+			wait := er.deletedCleanupSleeper.Timer(ctx)
 			if now.Sub(fi.ModTime) > expiry {
-				er.deleteObject(ctx, minioMetaMultipartBucket, uploadIDPath, fi.Erasure.DataBlocks+1)
+				er.renameAll(ctx, minioMetaMultipartBucket, uploadIDPath)
 			}
+			wait()
+			return nil
+		})
+	})
+
+	readDirFn(pathJoin(diskPath, minioMetaTmpBucket), func(tmpDir string, typ os.FileMode) error {
+		if tmpDir == ".trash/" { // do not remove .trash/ here, it has its own routines
+			return nil
 		}
-	}
-	tmpDirs, err := disk.ListDir(ctx, minioMetaTmpBucket, "", -1)
-	if err != nil {
-		return
-	}
-	for _, tmpDir := range tmpDirs {
-		fi, err := disk.ReadVersion(ctx, minioMetaTmpBucket, tmpDir, "", false)
+		vi, err := disk.StatVol(ctx, pathJoin(minioMetaTmpBucket, tmpDir))
 		if err != nil {
-			continue
+			return nil
 		}
-		if now.Sub(fi.ModTime) > expiry {
-			er.deleteObject(ctx, minioMetaTmpBucket, tmpDir, fi.Erasure.DataBlocks+1)
+		wait := er.deletedCleanupSleeper.Timer(ctx)
+		if now.Sub(vi.Created) > expiry {
+			er.deleteAll(ctx, minioMetaTmpBucket, tmpDir)
 		}
-	}
+		wait()
+		return nil
+	})
 }
 
 // ListMultipartUploads - lists all the pending multipart
@@ -247,7 +284,7 @@ func (er erasureObjects) newMultipartUpload(ctx context.Context, bucket string,
 	}
 
 	dataBlocks := len(onlineDisks) - parityBlocks
-	fi := newFileInfo(object, dataBlocks, parityBlocks)
+	fi := newFileInfo(pathJoin(bucket, object), dataBlocks, parityBlocks)
 
 	// we now know the number of blocks this object needs for data and parity.
 	// establish the writeQuorum using this data
@@ -325,7 +362,7 @@ func (er erasureObjects) NewMultipartUpload(ctx context.Context, bucket, object
 //
 // Implements S3 compatible Upload Part Copy API.
 func (er erasureObjects) CopyObjectPart(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject, uploadID string, partID int, startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (pi PartInfo, e error) {
-	partInfo, err := er.PutObjectPart(ctx, dstBucket, dstObject, uploadID, partID, NewPutObjReader(srcInfo.Reader, nil, nil), dstOpts)
+	partInfo, err := er.PutObjectPart(ctx, dstBucket, dstObject, uploadID, partID, NewPutObjReader(srcInfo.Reader), dstOpts)
 	if err != nil {
 		return pi, toObjectErr(err, dstBucket, dstObject)
 	}
@@ -341,7 +378,8 @@ func (er erasureObjects) CopyObjectPart(ctx context.Context, srcBucket, srcObjec
 // Implements S3 compatible Upload Part API.
 func (er erasureObjects) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, r *PutObjReader, opts ObjectOptions) (pi PartInfo, err error) {
 	uploadIDLock := er.NewNSLock(bucket, pathJoin(object, uploadID))
-	if err = uploadIDLock.GetRLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = uploadIDLock.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return PartInfo{}, err
 	}
 	readLocked := true
@@ -415,7 +453,14 @@ func (er erasureObjects) PutObjectPart(ctx context.Context, bucket, object, uplo
 	switch size := data.Size(); {
 	case size == 0:
 		buffer = make([]byte, 1) // Allocate atleast a byte to reach EOF
-	case size == -1 || size >= fi.Erasure.BlockSize:
+	case size == -1:
+		if size := data.ActualSize(); size > 0 && size < fi.Erasure.BlockSize {
+			buffer = make([]byte, data.ActualSize()+256, data.ActualSize()*2+512)
+		} else {
+			buffer = er.bp.Get()
+			defer er.bp.Put(buffer)
+		}
+	case size >= fi.Erasure.BlockSize:
 		buffer = er.bp.Get()
 		defer er.bp.Put(buffer)
 	case size < fi.Erasure.BlockSize:
@@ -456,7 +501,8 @@ func (er erasureObjects) PutObjectPart(ctx context.Context, bucket, object, uplo
 	// PutObjectParts would serialize here updating `xl.meta`
 	uploadIDLock.RUnlock()
 	readLocked = false
-	if err = uploadIDLock.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = uploadIDLock.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return PartInfo{}, err
 	}
 	defer uploadIDLock.Unlock()
@@ -537,8 +583,10 @@ func (er erasureObjects) GetMultipartInfo(ctx context.Context, bucket, object, u
 		UploadID: uploadID,
 	}
 
+	var err error
 	uploadIDLock := er.NewNSLock(bucket, pathJoin(object, uploadID))
-	if err := uploadIDLock.GetRLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = uploadIDLock.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return MultipartInfo{}, err
 	}
 	defer uploadIDLock.RUnlock()
@@ -584,9 +632,10 @@ func (er erasureObjects) GetMultipartInfo(ctx context.Context, bucket, object, u
 // Implements S3 compatible ListObjectParts API. The resulting
 // ListPartsInfo structure is marshaled directly into XML and
 // replied back to the client.
-func (er erasureObjects) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker, maxParts int, opts ObjectOptions) (result ListPartsInfo, e error) {
+func (er erasureObjects) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker, maxParts int, opts ObjectOptions) (result ListPartsInfo, err error) {
 	uploadIDLock := er.NewNSLock(bucket, pathJoin(object, uploadID))
-	if err := uploadIDLock.GetRLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = uploadIDLock.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return ListPartsInfo{}, err
 	}
 	defer uploadIDLock.RUnlock()
@@ -679,7 +728,8 @@ func (er erasureObjects) CompleteMultipartUpload(ctx context.Context, bucket str
 	// Hold read-locks to verify uploaded parts, also disallows
 	// parallel part uploads as well.
 	uploadIDLock := er.NewNSLock(bucket, pathJoin(object, uploadID))
-	if err = uploadIDLock.GetRLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = uploadIDLock.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return oi, err
 	}
 	defer uploadIDLock.RUnlock()
@@ -834,7 +884,8 @@ func (er erasureObjects) CompleteMultipartUpload(ctx context.Context, bucket str
 
 	// Hold namespace to complete the transaction
 	lk := er.NewNSLock(bucket, object)
-	if err = lk.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = lk.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return oi, err
 	}
 	defer lk.Unlock()
@@ -874,9 +925,10 @@ func (er erasureObjects) CompleteMultipartUpload(ctx context.Context, bucket str
 // All parts are purged from all disks and reference to the uploadID
 // would be removed from the system, rollback is not possible on this
 // operation.
-func (er erasureObjects) AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) error {
+func (er erasureObjects) AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) (err error) {
 	lk := er.NewNSLock(bucket, pathJoin(object, uploadID))
-	if err := lk.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = lk.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return err
 	}
 	defer lk.Unlock()

cmd/erasure-object.go

@@ -45,7 +45,7 @@ var objectOpIgnoredErrs = append(baseIgnoredErrs, errDiskAccessDenied, errUnform
 // CopyObject - copy object source object to destination object.
 // if source object and destination object are same we only
 // update metadata.
-func (er erasureObjects) CopyObject(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject string, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (oi ObjectInfo, e error) {
+func (er erasureObjects) CopyObject(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject string, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (oi ObjectInfo, err error) {
 	// This call shouldn't be used for anything other than metadata updates or adding self referential versions.
 	if !srcInfo.metadataOnly {
 		return oi, NotImplemented{}
@@ -54,7 +54,8 @@ func (er erasureObjects) CopyObject(ctx context.Context, srcBucket, srcObject, d
 	defer ObjectPathUpdated(pathJoin(dstBucket, dstObject))
 
 	lk := er.NewNSLock(dstBucket, dstObject)
-	if err := lk.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = lk.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return oi, err
 	}
 	defer lk.Unlock()
@@ -147,12 +148,14 @@ func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object stri
 		lock := er.NewNSLock(bucket, object)
 		switch lockType {
 		case writeLock:
-			if err = lock.GetLock(ctx, globalOperationTimeout); err != nil {
+			ctx, err = lock.GetLock(ctx, globalOperationTimeout)
+			if err != nil {
 				return nil, err
 			}
 			nsUnlocker = lock.Unlock
 		case readLock:
-			if err = lock.GetRLock(ctx, globalOperationTimeout); err != nil {
+			ctx, err = lock.GetRLock(ctx, globalOperationTimeout)
+			if err != nil {
 				return nil, err
 			}
 			nsUnlocker = lock.RUnlock
@@ -162,14 +165,6 @@ func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object stri
 
 	fi, metaArr, onlineDisks, err := er.getObjectFileInfo(ctx, bucket, object, opts, true)
 	if err != nil {
-		if isProxyable(ctx, bucket) && (errors.Is(err, errFileNotFound) || errors.Is(err, errFileVersionNotFound)) {
-			// proxy to replication target if active-active replication is in place.
-			reader, proxy := proxyGetToReplicationTarget(ctx, bucket, object, rs, h, opts)
-			if reader == nil || !proxy {
-				return nil, toObjectErr(err, bucket, object)
-			}
-			return reader, nil
-		}
 		return nil, toObjectErr(err, bucket, object)
 	}
 
@@ -187,7 +182,7 @@ func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object stri
 	}
 	if objInfo.TransitionStatus == lifecycle.TransitionComplete {
 		// If transitioned, stream from transition tier unless object is restored locally or restore date is past.
-		restoreHdr, ok := objInfo.UserDefined[xhttp.AmzRestore]
+		restoreHdr, ok := caseInsensitiveMap(objInfo.UserDefined).Lookup(xhttp.AmzRestore)
 		if !ok || !strings.HasPrefix(restoreHdr, "ongoing-request=false") || (!objInfo.RestoreExpires.IsZero() && time.Now().After(objInfo.RestoreExpires)) {
 			return getTransitionedObjectReader(ctx, bucket, object, rs, h, objInfo, opts)
 		}
@@ -216,10 +211,11 @@ func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object stri
 //
 // startOffset indicates the starting read location of the object.
 // length indicates the total length of the object.
-func (er erasureObjects) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) error {
+func (er erasureObjects) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error) {
 	// Lock the object before reading.
 	lk := er.NewNSLock(bucket, object)
-	if err := lk.GetRLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = lk.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return err
 	}
 	defer lk.RUnlock()
@@ -336,7 +332,9 @@ func (er erasureObjects) getObjectWithFileInfo(ctx context.Context, bucket, obje
 				}
 				if scan != madmin.HealUnknownScan {
 					healOnce.Do(func() {
-						go healObject(bucket, object, fi.VersionID, scan)
+						if _, healing := er.getOnlineDisksWithHealing(); !healing {
+							go healObject(bucket, object, fi.VersionID, scan)
+						}
 					})
 				}
 			}
@@ -378,12 +376,15 @@ func (er erasureObjects) getObject(ctx context.Context, bucket, object string, s
 
 // GetObjectInfo - reads object metadata and replies back ObjectInfo.
 func (er erasureObjects) GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (info ObjectInfo, err error) {
-	// Lock the object before reading.
-	lk := er.NewNSLock(bucket, object)
-	if err := lk.GetRLock(ctx, globalOperationTimeout); err != nil {
-		return ObjectInfo{}, err
+	if !opts.NoLock {
+		// Lock the object before reading.
+		lk := er.NewNSLock(bucket, object)
+		ctx, err = lk.GetRLock(ctx, globalOperationTimeout)
+		if err != nil {
+			return ObjectInfo{}, err
+		}
+		defer lk.RUnlock()
 	}
-	defer lk.RUnlock()
 
 	return er.getObjectInfo(ctx, bucket, object, opts)
 }
@@ -414,7 +415,7 @@ func (er erasureObjects) getObjectFileInfo(ctx context.Context, bucket, object s
 					er.deleteObjectVersion(ctx, bucket, object, 1, FileInfo{
 						Name:      object,
 						VersionID: opts.VersionID,
-					})
+					}, false)
 				}
 			}
 		}
@@ -444,7 +445,9 @@ func (er erasureObjects) getObjectFileInfo(ctx context.Context, bucket, object s
 
 	// if missing metadata can be reconstructed, attempt to reconstruct.
 	if missingBlocks > 0 && missingBlocks < readQuorum {
-		go healObject(bucket, object, fi.VersionID, madmin.HealNormalScan)
+		if _, healing := er.getOnlineDisksWithHealing(); !healing {
+			go healObject(bucket, object, fi.VersionID, madmin.HealNormalScan)
+		}
 	}
 
 	return fi, metaArr, onlineDisks, nil
@@ -454,13 +457,6 @@ func (er erasureObjects) getObjectFileInfo(ctx context.Context, bucket, object s
 func (er erasureObjects) getObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	fi, _, _, err := er.getObjectFileInfo(ctx, bucket, object, opts, false)
 	if err != nil {
-		// proxy HEAD to replication target if active-active replication configured on bucket
-		if isProxyable(ctx, bucket) && (errors.Is(err, errFileNotFound) || errors.Is(err, errFileVersionNotFound)) {
-			oi, proxy, err := proxyHeadToReplicationTarget(ctx, bucket, object, opts)
-			if proxy {
-				return oi, err
-			}
-		}
 		return objInfo, toObjectErr(err, bucket, object)
 
 	}
@@ -471,10 +467,11 @@ func (er erasureObjects) getObjectInfo(ctx context.Context, bucket, object strin
 			objInfo.StorageClass = sc
 		}
 	}
-	if !fi.VersionPurgeStatus.Empty() {
+	if !fi.VersionPurgeStatus.Empty() && opts.VersionID != "" {
 		// Make sure to return object info to provide extra information.
 		return objInfo, toObjectErr(errMethodNotAllowed, bucket, object)
 	}
+
 	if fi.Deleted {
 		if opts.VersionID == "" || opts.DeleteMarker {
 			return objInfo, toObjectErr(errFileNotFound, bucket, object)
@@ -627,10 +624,13 @@ func (er erasureObjects) putObject(ctx context.Context, bucket string, object st
 
 	storageDisks := er.getDisks()
 
-	// Get parity and data drive count based on storage class metadata
-	parityDrives := globalStorageClass.GetParityForSC(opts.UserDefined[xhttp.AmzStorageClass])
-	if parityDrives <= 0 {
-		parityDrives = er.defaultParityCount
+	parityDrives := len(storageDisks) / 2
+	if !opts.MaxParity {
+		// Get parity and data drive count based on storage class metadata
+		parityDrives = globalStorageClass.GetParityForSC(opts.UserDefined[xhttp.AmzStorageClass])
+		if parityDrives <= 0 {
+			parityDrives = er.defaultParityCount
+		}
 	}
 	dataDrives := len(storageDisks) - parityDrives
 
@@ -662,7 +662,7 @@ func (er erasureObjects) putObject(ctx context.Context, bucket string, object st
 	// Initialize parts metadata
 	partsMetadata := make([]FileInfo, len(storageDisks))
 
-	fi := newFileInfo(object, dataDrives, parityDrives)
+	fi := newFileInfo(pathJoin(bucket, object), dataDrives, parityDrives)
 
 	if opts.Versioned {
 		fi.VersionID = opts.VersionID
@@ -691,7 +691,14 @@ func (er erasureObjects) putObject(ctx context.Context, bucket string, object st
 	switch size := data.Size(); {
 	case size == 0:
 		buffer = make([]byte, 1) // Allocate atleast a byte to reach EOF
-	case size == -1 || size >= fi.Erasure.BlockSize:
+	case size == -1:
+		if size := data.ActualSize(); size > 0 && size < fi.Erasure.BlockSize {
+			buffer = make([]byte, data.ActualSize()+256, data.ActualSize()*2+512)
+		} else {
+			buffer = er.bp.Get()
+			defer er.bp.Put(buffer)
+		}
+	case size >= fi.Erasure.BlockSize:
 		buffer = er.bp.Get()
 		defer er.bp.Put(buffer)
 	case size < fi.Erasure.BlockSize:
@@ -727,8 +734,10 @@ func (er erasureObjects) putObject(ctx context.Context, bucket string, object st
 	}
 
 	if !opts.NoLock {
+		var err error
 		lk := er.NewNSLock(bucket, object)
-		if err := lk.GetLock(ctx, globalOperationTimeout); err != nil {
+		ctx, err = lk.GetLock(ctx, globalOperationTimeout)
+		if err != nil {
 			return ObjectInfo{}, err
 		}
 		defer lk.Unlock()
@@ -800,7 +809,7 @@ func (er erasureObjects) putObject(ctx context.Context, bucket string, object st
 	return fi.ToObjectInfo(bucket, object), nil
 }
 
-func (er erasureObjects) deleteObjectVersion(ctx context.Context, bucket, object string, writeQuorum int, fi FileInfo) error {
+func (er erasureObjects) deleteObjectVersion(ctx context.Context, bucket, object string, writeQuorum int, fi FileInfo, forceDelMarker bool) error {
 	defer ObjectPathUpdated(pathJoin(bucket, object))
 	disks := er.getDisks()
 	g := errgroup.WithNErrs(len(disks))
@@ -810,7 +819,7 @@ func (er erasureObjects) deleteObjectVersion(ctx context.Context, bucket, object
 			if disks[index] == nil {
 				return errDiskNotFound
 			}
-			return disks[index].DeleteVersion(ctx, bucket, object, fi)
+			return disks[index].DeleteVersion(ctx, bucket, object, fi, forceDelMarker)
 		}, index)
 	}
 	// return errors if any during deletion
@@ -1037,7 +1046,8 @@ func (er erasureObjects) DeleteObject(ctx context.Context, bucket, object string
 	}
 	// Acquire a write lock before deleting the object.
 	lk := er.NewNSLock(bucket, object)
-	if err = lk.GetLock(ctx, globalDeleteOperationTimeout); err != nil {
+	ctx, err = lk.GetLock(ctx, globalDeleteOperationTimeout)
+	if err != nil {
 		return ObjectInfo{}, err
 	}
 	defer lk.Unlock()
@@ -1049,11 +1059,10 @@ func (er erasureObjects) DeleteObject(ctx context.Context, bucket, object string
 	if goi.VersionID != "" {
 		markDelete = true
 	}
+
 	// Default deleteMarker to true if object is under versioning
-	deleteMarker := true
-	if gerr == nil {
-		deleteMarker = goi.VersionID != ""
-	}
+	deleteMarker := opts.Versioned
+
 	if opts.VersionID != "" {
 		// case where replica version needs to be deleted on target cluster
 		if versionFound && opts.DeleteMarkerReplicationStatus == replication.Replica.String() {
@@ -1062,7 +1071,7 @@ func (er erasureObjects) DeleteObject(ctx context.Context, bucket, object string
 		if opts.VersionPurgeStatus.Empty() && opts.DeleteMarkerReplicationStatus == "" {
 			markDelete = false
 		}
-		if opts.DeleteMarker && opts.VersionPurgeStatus == Complete {
+		if opts.VersionPurgeStatus == Complete {
 			markDelete = false
 		}
 		// determine if the version represents an object delete
@@ -1098,7 +1107,7 @@ func (er erasureObjects) DeleteObject(ctx context.Context, bucket, object string
 			// version as delete marker
 			// Add delete marker, since we don't have any version specified explicitly.
 			// Or if a particular version id needs to be replicated.
-			if err = er.deleteObjectVersion(ctx, bucket, object, writeQuorum, fi); err != nil {
+			if err = er.deleteObjectVersion(ctx, bucket, object, writeQuorum, fi, opts.DeleteMarker); err != nil {
 				return objInfo, toObjectErr(err, bucket, object)
 			}
 			return fi.ToObjectInfo(bucket, object), nil
@@ -1115,7 +1124,7 @@ func (er erasureObjects) DeleteObject(ctx context.Context, bucket, object string
 		DeleteMarkerReplicationStatus: opts.DeleteMarkerReplicationStatus,
 		VersionPurgeStatus:            opts.VersionPurgeStatus,
 		TransitionStatus:              opts.TransitionStatus,
-	}); err != nil {
+	}, opts.DeleteMarker); err != nil {
 		return objInfo, toObjectErr(err, bucket, object)
 	}
 
@@ -1146,7 +1155,16 @@ func (er erasureObjects) addPartial(bucket, object, versionID string) {
 }
 
 // PutObjectTags - replace or add tags to an existing object
-func (er erasureObjects) PutObjectTags(ctx context.Context, bucket, object string, tags string, opts ObjectOptions) error {
+func (er erasureObjects) PutObjectTags(ctx context.Context, bucket, object string, tags string, opts ObjectOptions) (ObjectInfo, error) {
+	var err error
+	// Lock the object before updating tags.
+	lk := er.NewNSLock(bucket, object)
+	ctx, err = lk.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
+		return ObjectInfo{}, err
+	}
+	defer lk.Unlock()
+
 	disks := er.getDisks()
 
 	// Read metadata associated with the object from all disks.
@@ -1154,7 +1172,7 @@ func (er erasureObjects) PutObjectTags(ctx context.Context, bucket, object strin
 
 	readQuorum, writeQuorum, err := objectQuorumFromMeta(ctx, metaArr, errs, er.defaultParityCount)
 	if err != nil {
-		return toObjectErr(err, bucket, object)
+		return ObjectInfo{}, toObjectErr(err, bucket, object)
 	}
 
 	// List all online disks.
@@ -1163,13 +1181,13 @@ func (er erasureObjects) PutObjectTags(ctx context.Context, bucket, object strin
 	// Pick latest valid metadata.
 	fi, err := pickValidFileInfo(ctx, metaArr, modTime, readQuorum)
 	if err != nil {
-		return toObjectErr(err, bucket, object)
+		return ObjectInfo{}, toObjectErr(err, bucket, object)
 	}
 	if fi.Deleted {
 		if opts.VersionID == "" {
-			return toObjectErr(errFileNotFound, bucket, object)
+			return ObjectInfo{}, toObjectErr(errFileNotFound, bucket, object)
 		}
-		return toObjectErr(errMethodNotAllowed, bucket, object)
+		return ObjectInfo{}, toObjectErr(errMethodNotAllowed, bucket, object)
 	}
 
 	onlineDisks, metaArr = shuffleDisksAndPartsMetadataByIndex(onlineDisks, metaArr, fi.Erasure.Distribution)
@@ -1192,15 +1210,18 @@ func (er erasureObjects) PutObjectTags(ctx context.Context, bucket, object strin
 
 	// Write unique `xl.meta` for each disk.
 	if onlineDisks, err = writeUniqueFileInfo(ctx, onlineDisks, minioMetaTmpBucket, tempObj, metaArr, writeQuorum); err != nil {
-		return toObjectErr(err, bucket, object)
+		return ObjectInfo{}, toObjectErr(err, bucket, object)
 	}
 
 	// Atomically rename metadata from tmp location to destination for each disk.
 	if _, err = renameFileInfo(ctx, onlineDisks, minioMetaTmpBucket, tempObj, bucket, object, writeQuorum); err != nil {
-		return toObjectErr(err, bucket, object)
+		return ObjectInfo{}, toObjectErr(err, bucket, object)
 	}
 
-	return nil
+	objInfo := fi.ToObjectInfo(bucket, object)
+	objInfo.UserTags = tags
+
+	return objInfo, nil
 }
 
 // updateObjectMeta will update the metadata of a file.
@@ -1264,7 +1285,7 @@ func (er erasureObjects) updateObjectMeta(ctx context.Context, bucket, object st
 }
 
 // DeleteObjectTags - delete object tags from an existing object
-func (er erasureObjects) DeleteObjectTags(ctx context.Context, bucket, object string, opts ObjectOptions) error {
+func (er erasureObjects) DeleteObjectTags(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) {
 	return er.PutObjectTags(ctx, bucket, object, "", opts)
 }
 

cmd/erasure-server-pool.go

@@ -33,9 +33,9 @@ import (
 	"github.com/minio/minio-go/v7/pkg/tags"
 	"github.com/minio/minio/cmd/config/storageclass"
 	"github.com/minio/minio/cmd/logger"
-	"github.com/minio/minio/pkg/color"
 	"github.com/minio/minio/pkg/madmin"
 	"github.com/minio/minio/pkg/sync/errgroup"
+	"github.com/minio/minio/pkg/wildcard"
 )
 
 type erasureServerPools struct {
@@ -107,16 +107,10 @@ func newErasureServerPools(ctx context.Context, endpointServerPools EndpointServ
 			return nil, fmt.Errorf("All serverPools should have same deployment ID expected %s, got %s", deploymentID, formats[i].ID)
 		}
 
-		// Validate if users brought different different distribution algo pools.
-		if distributionAlgo != formats[i].Erasure.DistributionAlgo {
-			return nil, fmt.Errorf("All serverPools should have same distributionAlgo expected %s, got %s", distributionAlgo, formats[i].Erasure.DistributionAlgo)
-		}
-
-		z.serverPools[i], err = newErasureSets(ctx, ep.Endpoints, storageDisks[i], formats[i], commonParityDrives)
+		z.serverPools[i], err = newErasureSets(ctx, ep.Endpoints, storageDisks[i], formats[i], commonParityDrives, i)
 		if err != nil {
 			return nil, err
 		}
-		z.serverPools[i].poolNumber = i
 	}
 	ctx, z.shutdown = context.WithCancel(ctx)
 	go intDataUpdateTracker.start(ctx, localDrives...)
@@ -252,29 +246,39 @@ func (z *erasureServerPools) getServerPoolsAvailableSpace(ctx context.Context, s
 
 // getPoolIdx returns the found previous object and its corresponding pool idx,
 // if none are found falls back to most available space pool.
-func (z *erasureServerPools) getPoolIdx(ctx context.Context, bucket, object string, opts ObjectOptions, size int64) (idx int, err error) {
+func (z *erasureServerPools) getPoolIdx(ctx context.Context, bucket, object string, size int64) (idx int, err error) {
 	if z.SinglePool() {
 		return 0, nil
 	}
+
+	errs := make([]error, len(z.serverPools))
+	objInfos := make([]ObjectInfo, len(z.serverPools))
+
+	var wg sync.WaitGroup
 	for i, pool := range z.serverPools {
-		objInfo, err := pool.GetObjectInfo(ctx, bucket, object, opts)
-		switch err.(type) {
-		case ObjectNotFound:
-			// VersionId was not specified but found delete marker or no versions exist.
-		case MethodNotAllowed:
-			// VersionId was specified but found delete marker
-		default:
-			if err != nil {
-				// any other un-handled errors return right here.
-				return -1, err
-			}
+		wg.Add(1)
+		go func(i int, pool *erasureSets) {
+			defer wg.Done()
+			objInfos[i], errs[i] = pool.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
+		}(i, pool)
+	}
+	wg.Wait()
+
+	for i, err := range errs {
+		if err != nil && !isErrObjectNotFound(err) {
+			return -1, err
 		}
-		// delete marker not specified means no versions
-		// exist continue to next pool.
-		if !objInfo.DeleteMarker && err != nil {
+		if isErrObjectNotFound(err) {
+			// No object exists or its a delete marker,
+			// check objInfo to confirm.
+			if objInfos[i].DeleteMarker && objInfos[i].Name != "" {
+				return i, nil
+			}
+			// objInfo is not valid, truly the object doesn't
+			// exist proceed to next pool.
 			continue
 		}
-		// Success case and when DeleteMarker is true return.
+		// object exists at this pool.
 		return i, nil
 	}
 
@@ -307,8 +311,8 @@ func (z *erasureServerPools) Shutdown(ctx context.Context) error {
 	return nil
 }
 
-func (z *erasureServerPools) BackendInfo() (b BackendInfo) {
-	b.Type = BackendErasure
+func (z *erasureServerPools) BackendInfo() (b madmin.BackendInfo) {
+	b.Type = madmin.Erasure
 
 	scParity := globalStorageClass.GetParityForSC(storageclass.STANDARD)
 	if scParity <= 0 {
@@ -327,6 +331,35 @@ func (z *erasureServerPools) BackendInfo() (b BackendInfo) {
 	return
 }
 
+func (z *erasureServerPools) LocalStorageInfo(ctx context.Context) (StorageInfo, []error) {
+	var storageInfo StorageInfo
+
+	storageInfos := make([]StorageInfo, len(z.serverPools))
+	storageInfosErrs := make([][]error, len(z.serverPools))
+	g := errgroup.WithNErrs(len(z.serverPools))
+	for index := range z.serverPools {
+		index := index
+		g.Go(func() error {
+			storageInfos[index], storageInfosErrs[index] = z.serverPools[index].LocalStorageInfo(ctx)
+			return nil
+		}, index)
+	}
+
+	// Wait for the go routines.
+	g.Wait()
+
+	storageInfo.Backend = z.BackendInfo()
+	for _, lstorageInfo := range storageInfos {
+		storageInfo.Disks = append(storageInfo.Disks, lstorageInfo.Disks...)
+	}
+
+	var errs []error
+	for i := range z.serverPools {
+		errs = append(errs, storageInfosErrs[i]...)
+	}
+	return storageInfo, errs
+}
+
 func (z *erasureServerPools) StorageInfo(ctx context.Context) (StorageInfo, []error) {
 	var storageInfo StorageInfo
 
@@ -356,7 +389,7 @@ func (z *erasureServerPools) StorageInfo(ctx context.Context) (StorageInfo, []er
 	return storageInfo, errs
 }
 
-func (z *erasureServerPools) CrawlAndGetDataUsage(ctx context.Context, bf *bloomFilter, updates chan<- DataUsageInfo) error {
+func (z *erasureServerPools) NSScanner(ctx context.Context, bf *bloomFilter, updates chan<- DataUsageInfo) error {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -371,12 +404,11 @@ func (z *erasureServerPools) CrawlAndGetDataUsage(ctx context.Context, bf *bloom
 	}
 
 	if len(allBuckets) == 0 {
-		logger.Info(color.Green("data-crawl:") + " No buckets found, skipping crawl")
 		updates <- DataUsageInfo{} // no buckets found update data usage to reflect latest state
 		return nil
 	}
 
-	// Crawl latest allBuckets first.
+	// Scanner latest allBuckets first.
 	sort.Slice(allBuckets, func(i, j int) bool {
 		return allBuckets[i].Created.After(allBuckets[j].Created)
 	})
@@ -398,8 +430,8 @@ func (z *erasureServerPools) CrawlAndGetDataUsage(ctx context.Context, bf *bloom
 						mu.Unlock()
 					}
 				}()
-				// Start crawler. Blocks until done.
-				err := erObj.crawlAndGetDataUsage(ctx, allBuckets, bf, updates)
+				// Start scanner. Blocks until done.
+				err := erObj.nsScanner(ctx, allBuckets, bf, updates)
 				if err != nil {
 					logger.LogIf(ctx, err)
 					mu.Lock()
@@ -521,60 +553,129 @@ func (z *erasureServerPools) GetObjectNInfo(ctx context.Context, bucket, object
 
 	object = encodeDirObject(object)
 
-	for _, pool := range z.serverPools {
-		gr, err = pool.GetObjectNInfo(ctx, bucket, object, rs, h, lockType, opts)
-		if err != nil {
-			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				continue
+	if z.SinglePool() {
+		return z.serverPools[0].GetObjectNInfo(ctx, bucket, object, rs, h, lockType, opts)
+	}
+
+	var unlockOnDefer bool
+	var nsUnlocker = func() {}
+	defer func() {
+		if unlockOnDefer {
+			nsUnlocker()
+		}
+	}()
+
+	// Acquire lock
+	if lockType != noLock {
+		lock := z.NewNSLock(bucket, object)
+		switch lockType {
+		case writeLock:
+			ctx, err = lock.GetLock(ctx, globalOperationTimeout)
+			if err != nil {
+				return nil, err
+			}
+			nsUnlocker = lock.Unlock
+		case readLock:
+			ctx, err = lock.GetRLock(ctx, globalOperationTimeout)
+			if err != nil {
+				return nil, err
+			}
+			nsUnlocker = lock.RUnlock
+		}
+		unlockOnDefer = true
+	}
+
+	errs := make([]error, len(z.serverPools))
+	grs := make([]*GetObjectReader, len(z.serverPools))
+
+	lockType = noLock // do not take locks at lower levels
+	var wg sync.WaitGroup
+	for i, pool := range z.serverPools {
+		wg.Add(1)
+		go func(i int, pool *erasureSets) {
+			defer wg.Done()
+			grs[i], errs[i] = pool.GetObjectNInfo(ctx, bucket, object, rs, h, lockType, opts)
+		}(i, pool)
+	}
+	wg.Wait()
+
+	var found int = -1
+	for i, err := range errs {
+		if err == nil {
+			found = i
+			break
+		}
+		if !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
+			for _, grr := range grs {
+				if grr != nil {
+					grr.Close()
+				}
 			}
 			return gr, err
 		}
-		return gr, nil
 	}
+
+	if found >= 0 {
+		return grs[found], nil
+	}
+
+	object = decodeDirObject(object)
 	if opts.VersionID != "" {
 		return gr, VersionNotFound{Bucket: bucket, Object: object, VersionID: opts.VersionID}
 	}
 	return gr, ObjectNotFound{Bucket: bucket, Object: object}
 }
 
-func (z *erasureServerPools) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) error {
-	if err := checkGetObjArgs(ctx, bucket, object); err != nil {
-		return err
-	}
-
-	object = encodeDirObject(object)
-
-	for _, pool := range z.serverPools {
-		if err := pool.GetObject(ctx, bucket, object, startOffset, length, writer, etag, opts); err != nil {
-			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				continue
-			}
-			return err
-		}
-		return nil
-	}
-	if opts.VersionID != "" {
-		return VersionNotFound{Bucket: bucket, Object: object, VersionID: opts.VersionID}
-	}
-	return ObjectNotFound{Bucket: bucket, Object: object}
-}
-
 func (z *erasureServerPools) GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	if err = checkGetObjArgs(ctx, bucket, object); err != nil {
 		return objInfo, err
 	}
 
 	object = encodeDirObject(object)
-	for _, pool := range z.serverPools {
-		objInfo, err = pool.GetObjectInfo(ctx, bucket, object, opts)
-		if err != nil {
-			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				continue
-			}
-			return objInfo, err
-		}
-		return objInfo, nil
+
+	if z.SinglePool() {
+		return z.serverPools[0].GetObjectInfo(ctx, bucket, object, opts)
 	}
+
+	// Lock the object before reading.
+	lk := z.NewNSLock(bucket, object)
+	ctx, err = lk.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
+		return ObjectInfo{}, err
+	}
+	defer lk.RUnlock()
+
+	errs := make([]error, len(z.serverPools))
+	objInfos := make([]ObjectInfo, len(z.serverPools))
+
+	opts.NoLock = true // avoid taking locks at lower levels for multi-pool setups.
+	var wg sync.WaitGroup
+	for i, pool := range z.serverPools {
+		wg.Add(1)
+		go func(i int, pool *erasureSets) {
+			defer wg.Done()
+			objInfos[i], errs[i] = pool.GetObjectInfo(ctx, bucket, object, opts)
+		}(i, pool)
+	}
+	wg.Wait()
+
+	var found int = -1
+	for i, err := range errs {
+		if err == nil {
+			found = i
+			break
+		}
+		if !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
+			// some errors such as MethodNotAllowed for delete marker
+			// should be returned upwards.
+			return objInfos[i], err
+		}
+	}
+
+	if found >= 0 {
+		return objInfos[found], nil
+	}
+
 	object = decodeDirObject(object)
 	if opts.VersionID != "" {
 		return objInfo, VersionNotFound{Bucket: bucket, Object: object, VersionID: opts.VersionID}
@@ -595,7 +696,7 @@ func (z *erasureServerPools) PutObject(ctx context.Context, bucket string, objec
 		return z.serverPools[0].PutObject(ctx, bucket, object, data, opts)
 	}
 
-	idx, err := z.getPoolIdx(ctx, bucket, object, opts, data.Size())
+	idx, err := z.getPoolIdx(ctx, bucket, object, data.Size())
 	if err != nil {
 		return ObjectInfo{}, err
 	}
@@ -610,21 +711,17 @@ func (z *erasureServerPools) DeleteObject(ctx context.Context, bucket string, ob
 	}
 
 	object = encodeDirObject(object)
-
 	if z.SinglePool() {
 		return z.serverPools[0].DeleteObject(ctx, bucket, object, opts)
 	}
-	for _, pool := range z.serverPools {
-		objInfo, err = pool.DeleteObject(ctx, bucket, object, opts)
-		if err == nil {
-			return objInfo, nil
-		}
-		if err != nil && !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
-			break
-		}
+
+	// We don't know the size here set 1GiB atleast.
+	idx, err := z.getPoolIdx(ctx, bucket, object, 1<<30)
+	if err != nil {
+		return objInfo, err
 	}
 
-	return objInfo, err
+	return z.serverPools[idx].DeleteObject(ctx, bucket, object, opts)
 }
 
 func (z *erasureServerPools) DeleteObjects(ctx context.Context, bucket string, objects []ObjectToDelete, opts ObjectOptions) ([]DeletedObject, []error) {
@@ -638,9 +735,28 @@ func (z *erasureServerPools) DeleteObjects(ctx context.Context, bucket string, o
 		objSets.Add(objects[i].ObjectName)
 	}
 
+	poolObjIdxMap := map[int][]ObjectToDelete{}
+	origIndexMap := map[int][]int{}
+	if !z.SinglePool() {
+		for j, obj := range objects {
+			idx, err := z.getPoolIdx(ctx, bucket, obj.ObjectName, 1<<30)
+			if err != nil {
+				// Unhandled errors return right here.
+				for i := range derrs {
+					derrs[i] = err
+				}
+				return dobjects, derrs
+			}
+			poolObjIdxMap[idx] = append(poolObjIdxMap[idx], obj)
+			origIndexMap[idx] = append(origIndexMap[idx], j)
+		}
+	}
+
+	var err error
 	// Acquire a bulk write lock across 'objects'
 	multiDeleteLock := z.NewNSLock(bucket, objSets.ToSlice()...)
-	if err := multiDeleteLock.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = multiDeleteLock.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		for i := range derrs {
 			derrs[i] = err
 		}
@@ -652,13 +768,15 @@ func (z *erasureServerPools) DeleteObjects(ctx context.Context, bucket string, o
 		return z.serverPools[0].DeleteObjects(ctx, bucket, objects, opts)
 	}
 
-	for _, pool := range z.serverPools {
-		deletedObjects, errs := pool.DeleteObjects(ctx, bucket, objects, opts)
+	for idx, pool := range z.serverPools {
+		objs := poolObjIdxMap[idx]
+		orgIndexes := origIndexMap[idx]
+		deletedObjects, errs := pool.DeleteObjects(ctx, bucket, objs, opts)
 		for i, derr := range errs {
 			if derr != nil {
-				derrs[i] = derr
+				derrs[orgIndexes[i]] = derr
 			}
-			dobjects[i] = deletedObjects[i]
+			dobjects[orgIndexes[i]] = deletedObjects[i]
 		}
 	}
 	return dobjects, derrs
@@ -670,7 +788,7 @@ func (z *erasureServerPools) CopyObject(ctx context.Context, srcBucket, srcObjec
 
 	cpSrcDstSame := isStringEqual(pathJoin(srcBucket, srcObject), pathJoin(dstBucket, dstObject))
 
-	poolIdx, err := z.getPoolIdx(ctx, dstBucket, dstObject, dstOpts, srcInfo.Size)
+	poolIdx, err := z.getPoolIdx(ctx, dstBucket, dstObject, srcInfo.Size)
 	if err != nil {
 		return objInfo, err
 	}
@@ -739,7 +857,7 @@ func (z *erasureServerPools) ListObjectVersions(ctx context.Context, bucket, pre
 		Bucket:      bucket,
 		Prefix:      prefix,
 		Separator:   delimiter,
-		Limit:       maxKeys,
+		Limit:       maxKeysPlusOne(maxKeys, marker != ""),
 		Marker:      marker,
 		InclDeleted: true,
 		AskDisks:    globalAPIConfig.getListQuorum(),
@@ -759,6 +877,11 @@ func (z *erasureServerPools) ListObjectVersions(ctx context.Context, bucket, pre
 	if err != nil && err != io.EOF {
 		return loi, err
 	}
+	if versionMarker == "" {
+		// If we are not looking for a specific version skip it.
+		marker, _ = parseMarker(marker)
+		merged.forwardPast(marker)
+	}
 	objects := merged.fileInfoVersions(bucket, prefix, delimiter, versionMarker)
 	loi.IsTruncated = err == nil && len(objects) > 0
 	if maxKeys > 0 && len(objects) > maxKeys {
@@ -766,7 +889,7 @@ func (z *erasureServerPools) ListObjectVersions(ctx context.Context, bucket, pre
 		loi.IsTruncated = true
 	}
 	for _, obj := range objects {
-		if obj.IsDir && delimiter != "" {
+		if obj.IsDir && obj.ModTime.IsZero() && delimiter != "" {
 			loi.Prefixes = append(loi.Prefixes, obj.Name)
 		} else {
 			loi.Objects = append(loi.Objects, obj)
@@ -780,6 +903,16 @@ func (z *erasureServerPools) ListObjectVersions(ctx context.Context, bucket, pre
 	return loi, nil
 }
 
+func maxKeysPlusOne(maxKeys int, addOne bool) int {
+	if maxKeys < 0 || maxKeys > maxObjectList {
+		maxKeys = maxObjectList
+	}
+	if addOne {
+		maxKeys++
+	}
+	return maxKeys
+}
+
 func (z *erasureServerPools) ListObjects(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsInfo, error) {
 	var loi ListObjectsInfo
 
@@ -787,7 +920,7 @@ func (z *erasureServerPools) ListObjects(ctx context.Context, bucket, prefix, ma
 		Bucket:      bucket,
 		Prefix:      prefix,
 		Separator:   delimiter,
-		Limit:       maxKeys,
+		Limit:       maxKeysPlusOne(maxKeys, marker != ""),
 		Marker:      marker,
 		InclDeleted: false,
 		AskDisks:    globalAPIConfig.getListQuorum(),
@@ -796,6 +929,8 @@ func (z *erasureServerPools) ListObjects(ctx context.Context, bucket, prefix, ma
 		logger.LogIf(ctx, err)
 		return loi, err
 	}
+	marker, _ = parseMarker(marker)
+	merged.forwardPast(marker)
 
 	// Default is recursive, if delimiter is set then list non recursive.
 	objects := merged.fileInfos(bucket, prefix, delimiter)
@@ -805,7 +940,7 @@ func (z *erasureServerPools) ListObjects(ctx context.Context, bucket, prefix, ma
 		loi.IsTruncated = true
 	}
 	for _, obj := range objects {
-		if obj.IsDir && delimiter != "" {
+		if obj.IsDir && obj.ModTime.IsZero() && delimiter != "" {
 			loi.Prefixes = append(loi.Prefixes, obj.Name)
 		} else {
 			loi.Objects = append(loi.Objects, obj)
@@ -854,7 +989,7 @@ func (z *erasureServerPools) NewMultipartUpload(ctx context.Context, bucket, obj
 	}
 
 	// We don't know the exact size, so we ask for at least 1GiB file.
-	idx, err := z.getPoolIdx(ctx, bucket, object, opts, 1<<30)
+	idx, err := z.getPoolIdx(ctx, bucket, object, 1<<30)
 	if err != nil {
 		return "", err
 	}
@@ -869,7 +1004,7 @@ func (z *erasureServerPools) CopyObjectPart(ctx context.Context, srcBucket, srcO
 	}
 
 	return z.PutObjectPart(ctx, destBucket, destObject, uploadID, partID,
-		NewPutObjReader(srcInfo.Reader, nil, nil), dstOpts)
+		NewPutObjReader(srcInfo.Reader), dstOpts)
 }
 
 // PutObjectPart - writes part of an object to hashedSet based on the object name.
@@ -1115,22 +1250,24 @@ func (z *erasureServerPools) DeleteBucket(ctx context.Context, bucket string, fo
 // data is not distributed across sets.
 // Errors are logged but individual disk failures are not returned.
 func (z *erasureServerPools) deleteAll(ctx context.Context, bucket, prefix string) {
-	var wg sync.WaitGroup
 	for _, servers := range z.serverPools {
 		for _, set := range servers.sets {
-			for _, disk := range set.getDisks() {
-				if disk == nil {
-					continue
-				}
-				wg.Add(1)
-				go func(disk StorageAPI) {
-					defer wg.Done()
-					disk.Delete(ctx, bucket, prefix, true)
-				}(disk)
-			}
+			set.deleteAll(ctx, bucket, prefix)
+		}
+	}
+}
+
+// renameAll will rename bucket+prefix unconditionally across all disks to
+// minioMetaTmpBucket + unique uuid,
+// Note that set distribution is ignored so it should only be used in cases where
+// data is not distributed across sets. Errors are logged but individual
+// disk failures are not returned.
+func (z *erasureServerPools) renameAll(ctx context.Context, bucket, prefix string) {
+	for _, servers := range z.serverPools {
+		for _, set := range servers.sets {
+			set.renameAll(ctx, bucket, prefix)
 		}
 	}
-	wg.Wait()
 }
 
 // This function is used to undo a successful DeleteBucket operation.
@@ -1180,9 +1317,11 @@ func (z *erasureServerPools) ListBuckets(ctx context.Context) (buckets []BucketI
 }
 
 func (z *erasureServerPools) HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error) {
+	var err error
 	// Acquire lock on format.json
 	formatLock := z.NewNSLock(minioMetaBucket, formatConfigFile)
-	if err := formatLock.GetLock(ctx, globalOperationTimeout); err != nil {
+	ctx, err = formatLock.GetLock(ctx, globalOperationTimeout)
+	if err != nil {
 		return madmin.HealResultItem{}, err
 	}
 	defer formatLock.Unlock()
@@ -1312,90 +1451,99 @@ func (z *erasureServerPools) Walk(ctx context.Context, bucket, prefix string, re
 type HealObjectFn func(bucket, object, versionID string) error
 
 func (z *erasureServerPools) HealObjects(ctx context.Context, bucket, prefix string, opts madmin.HealOpts, healObject HealObjectFn) error {
-	// If listing did not return any entries upon first attempt, we
-	// return `ObjectNotFound`, to indicate the caller for any
-	// actions they may want to take as if `prefix` is missing.
-	err := toObjectErr(errFileNotFound, bucket, prefix)
-	for _, erasureSet := range z.serverPools {
-		for _, set := range erasureSet.sets {
-			var entryChs []FileInfoVersionsCh
-			var mu sync.Mutex
+	errCh := make(chan error)
+	ctx, cancel := context.WithCancel(ctx)
+	go func() {
+		defer close(errCh)
+		defer cancel()
+
+		for _, erasureSet := range z.serverPools {
 			var wg sync.WaitGroup
-			for _, disk := range set.getOnlineDisks() {
-				disk := disk
+			for _, set := range erasureSet.sets {
+				set := set
 				wg.Add(1)
 				go func() {
 					defer wg.Done()
-					entryCh, err := disk.WalkVersions(ctx, bucket, prefix, "", true, ctx.Done())
-					if err != nil {
-						// Disk walk returned error, ignore it.
+
+					disks, _ := set.getOnlineDisksWithHealing()
+					if len(disks) == 0 {
+						errCh <- errors.New("HealObjects: No non-healing disks found")
+						cancel()
+						return
+					}
+
+					healEntry := func(entry metaCacheEntry) {
+						if entry.isDir() {
+							return
+						}
+						// We might land at .metacache, .trash, .multipart
+						// no need to heal them skip, only when bucket
+						// is '.minio.sys'
+						if bucket == minioMetaBucket {
+							if wildcard.Match("buckets/*/.metacache/*", entry.name) {
+								return
+							}
+							if wildcard.Match("tmp/.trash/*", entry.name) {
+								return
+							}
+							if wildcard.Match("multipart/*", entry.name) {
+								return
+							}
+						}
+						fivs, err := entry.fileInfoVersions(bucket)
+						if err != nil {
+							errCh <- err
+							cancel()
+							return
+						}
+						waitForLowHTTPReq(globalHealConfig.IOCount, globalHealConfig.Sleep)
+						for _, version := range fivs.Versions {
+							if err := healObject(bucket, version.Name, version.VersionID); err != nil {
+								errCh <- err
+								cancel()
+								return
+							}
+						}
+					}
+
+					// How to resolve partial results.
+					resolver := metadataResolutionParams{
+						dirQuorum: 1,
+						objQuorum: 1,
+						bucket:    bucket,
+					}
+
+					if err := listPathRaw(ctx, listPathRawOptions{
+						disks:          disks,
+						bucket:         bucket,
+						path:           baseDirFromPrefix(prefix),
+						recursive:      true,
+						forwardTo:      "",
+						minDisks:       1,
+						reportNotFound: false,
+						agreed:         healEntry,
+						partial: func(entries metaCacheEntries, nAgreed int, errs []error) {
+							entry, ok := entries.resolve(&resolver)
+							if ok {
+								healEntry(*entry)
+							}
+						},
+						finished: nil,
+					}); err != nil {
+						cancel()
 						return
 					}
-					mu.Lock()
-					entryChs = append(entryChs, FileInfoVersionsCh{
-						Ch: entryCh,
-					})
-					mu.Unlock()
 				}()
 			}
 			wg.Wait()
-
-			entriesValid := make([]bool, len(entryChs))
-			entries := make([]FileInfoVersions, len(entryChs))
-
-			for {
-				entry, quorumCount, ok := lexicallySortedEntryVersions(entryChs, entries, entriesValid)
-				if !ok {
-					break
-				}
-
-				// Remove empty directories if found - they have no meaning.
-				// Can be left over from highly concurrent put/remove.
-				if quorumCount > set.setDriveCount/2 && entry.IsEmptyDir {
-					if !opts.DryRun && opts.Remove {
-						set.deleteEmptyDir(ctx, bucket, entry.Name)
-					}
-				}
-
-				// Indicate that first attempt was a success and subsequent loop
-				// knows that its not our first attempt at 'prefix'
-				err = nil
-
-				if quorumCount == set.setDriveCount && opts.ScanMode == madmin.HealNormalScan {
-					continue
-				}
-
-				for _, version := range entry.Versions {
-					if err := healObject(bucket, version.Name, version.VersionID); err != nil {
-						return toObjectErr(err, bucket, version.Name)
-					}
-				}
-			}
 		}
-	}
-
-	return err
+	}()
+	return <-errCh
 }
 
 func (z *erasureServerPools) HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (madmin.HealResultItem, error) {
 	object = encodeDirObject(object)
 
-	lk := z.NewNSLock(bucket, object)
-	if bucket == minioMetaBucket {
-		// For .minio.sys bucket heals we should hold write locks.
-		if err := lk.GetLock(ctx, globalOperationTimeout); err != nil {
-			return madmin.HealResultItem{}, err
-		}
-		defer lk.Unlock()
-	} else {
-		// Lock the object before healing. Use read lock since healing
-		// will only regenerate parts & xl.meta of outdated disks.
-		if err := lk.GetRLock(ctx, globalOperationTimeout); err != nil {
-			return madmin.HealResultItem{}, err
-		}
-		defer lk.RUnlock()
-	}
-
 	for _, pool := range z.serverPools {
 		result, err := pool.HealObject(ctx, bucket, object, versionID, opts)
 		result.Object = decodeDirObject(result.Object)
@@ -1426,18 +1574,18 @@ func (z *erasureServerPools) GetMetrics(ctx context.Context) (*BackendMetrics, e
 	return &BackendMetrics{}, NotImplemented{}
 }
 
-func (z *erasureServerPools) getPoolAndSet(id string) (int, int, error) {
+func (z *erasureServerPools) getPoolAndSet(id string) (poolIdx, setIdx, diskIdx int, err error) {
 	for poolIdx := range z.serverPools {
 		format := z.serverPools[poolIdx].format
 		for setIdx, set := range format.Erasure.Sets {
-			for _, diskID := range set {
+			for i, diskID := range set {
 				if diskID == id {
-					return poolIdx, setIdx, nil
+					return poolIdx, setIdx, i, nil
 				}
 			}
 		}
 	}
-	return 0, 0, fmt.Errorf("DiskID(%s) %w", id, errDiskNotFound)
+	return -1, -1, -1, fmt.Errorf("DiskID(%s) %w", id, errDiskNotFound)
 }
 
 // HealthOptions takes input options to return sepcific information
@@ -1455,6 +1603,40 @@ type HealthResult struct {
 	WriteQuorum   int
 }
 
+// ReadHealth returns if the cluster can serve read requests
+func (z *erasureServerPools) ReadHealth(ctx context.Context) bool {
+	erasureSetUpCount := make([][]int, len(z.serverPools))
+	for i := range z.serverPools {
+		erasureSetUpCount[i] = make([]int, len(z.serverPools[i].sets))
+	}
+
+	diskIDs := globalNotificationSys.GetLocalDiskIDs(ctx)
+	diskIDs = append(diskIDs, getLocalDiskIDs(z))
+
+	for _, localDiskIDs := range diskIDs {
+		for _, id := range localDiskIDs {
+			poolIdx, setIdx, _, err := z.getPoolAndSet(id)
+			if err != nil {
+				logger.LogIf(ctx, err)
+				continue
+			}
+			erasureSetUpCount[poolIdx][setIdx]++
+		}
+	}
+
+	b := z.BackendInfo()
+	readQuorum := b.StandardSCData[0]
+
+	for poolIdx := range erasureSetUpCount {
+		for setIdx := range erasureSetUpCount[poolIdx] {
+			if erasureSetUpCount[poolIdx][setIdx] < readQuorum {
+				return false
+			}
+		}
+	}
+	return true
+}
+
 // Health - returns current status of the object layer health,
 // provides if write access exists across sets, additionally
 // can be used to query scenarios if health may be lost
@@ -1472,7 +1654,7 @@ func (z *erasureServerPools) Health(ctx context.Context, opts HealthOptions) Hea
 
 	for _, localDiskIDs := range diskIDs {
 		for _, id := range localDiskIDs {
-			poolIdx, setIdx, err := z.getPoolAndSet(id)
+			poolIdx, setIdx, _, err := z.getPoolAndSet(id)
 			if err != nil {
 				logger.LogIf(ctx, err)
 				continue
@@ -1495,7 +1677,7 @@ func (z *erasureServerPools) Health(ctx context.Context, opts HealthOptions) Hea
 		// we need to tell healthy status as 'false' so that this server
 		// is not taken down for maintenance
 		var err error
-		aggHealStateResult, err = getAggregatedBackgroundHealState(ctx)
+		aggHealStateResult, err = getAggregatedBackgroundHealState(ctx, nil)
 		if err != nil {
 			logger.LogIf(logger.SetReqInfo(ctx, reqInfo), fmt.Errorf("Unable to verify global heal status: %w", err))
 			return HealthResult{
@@ -1542,62 +1724,35 @@ func (z *erasureServerPools) Health(ctx context.Context, opts HealthOptions) Hea
 }
 
 // PutObjectTags - replace or add tags to an existing object
-func (z *erasureServerPools) PutObjectTags(ctx context.Context, bucket, object string, tags string, opts ObjectOptions) error {
+func (z *erasureServerPools) PutObjectTags(ctx context.Context, bucket, object string, tags string, opts ObjectOptions) (ObjectInfo, error) {
 	object = encodeDirObject(object)
 	if z.SinglePool() {
 		return z.serverPools[0].PutObjectTags(ctx, bucket, object, tags, opts)
 	}
 
-	for _, pool := range z.serverPools {
-		err := pool.PutObjectTags(ctx, bucket, object, tags, opts)
-		if err != nil {
-			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				continue
-			}
-			return err
-		}
-		return nil
-	}
-	if opts.VersionID != "" {
-		return VersionNotFound{
-			Bucket:    bucket,
-			Object:    object,
-			VersionID: opts.VersionID,
-		}
-	}
-	return ObjectNotFound{
-		Bucket: bucket,
-		Object: object,
+	// We don't know the size here set 1GiB atleast.
+	idx, err := z.getPoolIdx(ctx, bucket, object, 1<<30)
+	if err != nil {
+		return ObjectInfo{}, err
 	}
+
+	return z.serverPools[idx].PutObjectTags(ctx, bucket, object, tags, opts)
 }
 
 // DeleteObjectTags - delete object tags from an existing object
-func (z *erasureServerPools) DeleteObjectTags(ctx context.Context, bucket, object string, opts ObjectOptions) error {
+func (z *erasureServerPools) DeleteObjectTags(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) {
 	object = encodeDirObject(object)
 	if z.SinglePool() {
 		return z.serverPools[0].DeleteObjectTags(ctx, bucket, object, opts)
 	}
-	for _, pool := range z.serverPools {
-		err := pool.DeleteObjectTags(ctx, bucket, object, opts)
-		if err != nil {
-			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				continue
-			}
-			return err
-		}
-		return nil
-	}
-	if opts.VersionID != "" {
-		return VersionNotFound{
-			Bucket:    bucket,
-			Object:    object,
-			VersionID: opts.VersionID,
-		}
-	}
-	return ObjectNotFound{
-		Bucket: bucket,
-		Object: object,
+
+	// We don't know the size here set 1GiB atleast.
+	idx, err := z.getPoolIdx(ctx, bucket, object, 1<<30)
+	if err != nil {
+		return ObjectInfo{}, err
 	}
+
+	return z.serverPools[idx].DeleteObjectTags(ctx, bucket, object, opts)
 }
 
 // GetObjectTags - get object tags from an existing object
@@ -1606,25 +1761,12 @@ func (z *erasureServerPools) GetObjectTags(ctx context.Context, bucket, object s
 	if z.SinglePool() {
 		return z.serverPools[0].GetObjectTags(ctx, bucket, object, opts)
 	}
-	for _, pool := range z.serverPools {
-		tags, err := pool.GetObjectTags(ctx, bucket, object, opts)
-		if err != nil {
-			if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
-				continue
-			}
-			return tags, err
-		}
-		return tags, nil
-	}
-	if opts.VersionID != "" {
-		return nil, VersionNotFound{
-			Bucket:    bucket,
-			Object:    object,
-			VersionID: opts.VersionID,
-		}
-	}
-	return nil, ObjectNotFound{
-		Bucket: bucket,
-		Object: object,
+
+	// We don't know the size here set 1GiB atleast.
+	idx, err := z.getPoolIdx(ctx, bucket, object, 1<<30)
+	if err != nil {
+		return nil, err
 	}
+
+	return z.serverPools[idx].GetObjectTags(ctx, bucket, object, opts)
 }

cmd/erasure-sets.go

@@ -18,10 +18,10 @@ package cmd
 
 import (
 	"context"
+	"encoding/binary"
 	"errors"
 	"fmt"
 	"hash/crc32"
-	"io"
 	"math/rand"
 	"net/http"
 	"sort"
@@ -29,6 +29,7 @@ import (
 	"time"
 
 	"github.com/dchest/siphash"
+	"github.com/dustin/go-humanize"
 	"github.com/google/uuid"
 	"github.com/minio/minio-go/v7/pkg/set"
 	"github.com/minio/minio-go/v7/pkg/tags"
@@ -83,7 +84,7 @@ type erasureSets struct {
 	setCount, setDriveCount int
 	defaultParityCount      int
 
-	poolNumber int
+	poolIndex int
 
 	disksConnectEvent chan diskConnectInfo
 
@@ -217,7 +218,7 @@ func (s *erasureSets) connectDisks() {
 				}
 				return
 			}
-			if disk.IsLocal() && disk.Healing() {
+			if disk.IsLocal() && disk.Healing() != nil {
 				globalBackgroundHealState.pushHealLocalDisks(disk.Endpoint())
 				logger.Info(fmt.Sprintf("Found the drive %s that needs healing, attempting to heal...", disk))
 			}
@@ -246,6 +247,7 @@ func (s *erasureSets) connectDisks() {
 				disk.SetDiskID(format.Erasure.This)
 				s.erasureDisks[setIndex][diskIndex] = disk
 			}
+			disk.SetDiskLoc(s.poolIndex, setIndex, diskIndex)
 			s.endpointStrings[setIndex*s.setDriveCount+diskIndex] = disk.String()
 			s.erasureDisksMu.Unlock()
 			go func(setIndex int) {
@@ -331,7 +333,7 @@ func (s *erasureSets) GetDisks(setIndex int) func() []StorageAPI {
 const defaultMonitorConnectEndpointInterval = defaultMonitorNewDiskInterval + time.Second*5
 
 // Initialize new set of erasure coded sets.
-func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []StorageAPI, format *formatErasureV3, defaultParityCount int) (*erasureSets, error) {
+func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []StorageAPI, format *formatErasureV3, defaultParityCount, poolIdx int) (*erasureSets, error) {
 	setCount := len(format.Erasure.Sets)
 	setDriveCount := len(format.Erasure.Sets[0])
 
@@ -353,13 +355,17 @@ func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []Sto
 		distributionAlgo:   format.Erasure.DistributionAlgo,
 		deploymentID:       uuid.MustParse(format.ID),
 		mrfOperations:      make(map[healSource]int),
+		poolIndex:          poolIdx,
 	}
 
 	mutex := newNSLock(globalIsDistErasure)
 
+	// Number of buffers, max 2GB
+	n := (2 * humanize.GiByte) / (blockSizeV2 * 2)
+
 	// Initialize byte pool once for all sets, bpool size is set to
-	// setCount * setDriveCount with each memory upto blockSizeV1.
-	bp := bpool.NewBytePoolCap(setCount*setDriveCount, blockSizeV1, blockSizeV1*2)
+	// setCount * setDriveCount with each memory upto blockSizeV2.
+	bp := bpool.NewBytePoolCap(n, blockSizeV2, blockSizeV2*2)
 
 	for i := 0; i < setCount; i++ {
 		s.erasureDisks[i] = make([]StorageAPI, setDriveCount)
@@ -393,27 +399,36 @@ func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []Sto
 			if err != nil {
 				continue
 			}
+			disk.SetDiskLoc(s.poolIndex, m, n)
 			s.endpointStrings[m*setDriveCount+n] = disk.String()
 			s.erasureDisks[m][n] = disk
 		}
 
 		// Initialize erasure objects for a given set.
 		s.sets[i] = &erasureObjects{
-			setNumber:          i,
-			setDriveCount:      setDriveCount,
-			defaultParityCount: defaultParityCount,
-			getDisks:           s.GetDisks(i),
-			getLockers:         s.GetLockers(i),
-			getEndpoints:       s.GetEndpoints(i),
-			nsMutex:            mutex,
-			bp:                 bp,
-			mrfOpCh:            make(chan partialOperation, 10000),
+			setIndex:              i,
+			poolIndex:             poolIdx,
+			setDriveCount:         setDriveCount,
+			defaultParityCount:    defaultParityCount,
+			getDisks:              s.GetDisks(i),
+			getLockers:            s.GetLockers(i),
+			getEndpoints:          s.GetEndpoints(i),
+			deletedCleanupSleeper: newDynamicSleeper(10, 10*time.Second),
+			nsMutex:               mutex,
+			bp:                    bp,
+			mrfOpCh:               make(chan partialOperation, 10000),
 		}
 	}
 
+	// cleanup ".trash/" folder every 30 minutes with sufficient sleep cycles.
+	const deletedObjectsCleanupInterval = 10 * time.Minute
+
 	// start cleanup stale uploads go-routine.
 	go s.cleanupStaleUploads(ctx, GlobalStaleUploadsCleanupInterval, GlobalStaleUploadsExpiry)
 
+	// start cleanup of deleted objects.
+	go s.cleanupDeletedObjects(ctx, deletedObjectsCleanupInterval)
+
 	// Start the disk monitoring and connect routine.
 	go s.monitorAndConnectEndpoints(ctx, defaultMonitorConnectEndpointInterval)
 	go s.maintainMRFList()
@@ -422,15 +437,37 @@ func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []Sto
 	return s, nil
 }
 
-func (s *erasureSets) cleanupStaleUploads(ctx context.Context, cleanupInterval, expiry time.Duration) {
-	ticker := time.NewTicker(cleanupInterval)
-	defer ticker.Stop()
+func (s *erasureSets) cleanupDeletedObjects(ctx context.Context, cleanupInterval time.Duration) {
+	timer := time.NewTimer(cleanupInterval)
+	defer timer.Stop()
 
 	for {
 		select {
 		case <-ctx.Done():
 			return
-		case <-ticker.C:
+		case <-timer.C:
+			// Reset for the next interval
+			timer.Reset(cleanupInterval)
+
+			for _, set := range s.sets {
+				set.cleanupDeletedObjects(ctx)
+			}
+		}
+	}
+}
+
+func (s *erasureSets) cleanupStaleUploads(ctx context.Context, cleanupInterval, expiry time.Duration) {
+	timer := time.NewTimer(cleanupInterval)
+	defer timer.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-timer.C:
+			// Reset for the next interval
+			timer.Reset(cleanupInterval)
+
 			for _, set := range s.sets {
 				set.cleanupStaleUploads(ctx, expiry)
 			}
@@ -446,7 +483,7 @@ type auditObjectOp struct {
 	Disks []string `json:"disks"`
 }
 
-func auditObjectErasureSet(ctx context.Context, object string, set *erasureObjects, poolNum int) {
+func auditObjectErasureSet(ctx context.Context, object string, set *erasureObjects) {
 	if len(logger.AuditTargets) == 0 {
 		return
 	}
@@ -454,8 +491,8 @@ func auditObjectErasureSet(ctx context.Context, object string, set *erasureObjec
 	object = decodeDirObject(object)
 
 	op := auditObjectOp{
-		Pool:  poolNum + 1,
-		Set:   set.setNumber + 1,
+		Pool:  set.poolIndex + 1,
+		Set:   set.setIndex + 1,
 		Disks: set.getEndpoints(),
 	}
 
@@ -503,7 +540,7 @@ func (s *erasureSets) StorageUsageInfo(ctx context.Context) StorageInfo {
 	storageUsageInfo := func() StorageInfo {
 		var storageInfo StorageInfo
 		storageInfos := make([]StorageInfo, len(s.sets))
-		storageInfo.Backend.Type = BackendErasure
+		storageInfo.Backend.Type = madmin.Erasure
 
 		g := errgroup.WithNErrs(len(s.sets))
 		for index := range s.sets {
@@ -538,6 +575,37 @@ func (s *erasureSets) StorageUsageInfo(ctx context.Context) StorageInfo {
 
 // StorageInfo - combines output of StorageInfo across all erasure coded object sets.
 func (s *erasureSets) StorageInfo(ctx context.Context) (StorageInfo, []error) {
+	var storageInfo madmin.StorageInfo
+
+	storageInfos := make([]madmin.StorageInfo, len(s.sets))
+	storageInfoErrs := make([][]error, len(s.sets))
+
+	g := errgroup.WithNErrs(len(s.sets))
+	for index := range s.sets {
+		index := index
+		g.Go(func() error {
+			storageInfos[index], storageInfoErrs[index] = s.sets[index].StorageInfo(ctx)
+			return nil
+		}, index)
+	}
+
+	// Wait for the go routines.
+	g.Wait()
+
+	for _, lstorageInfo := range storageInfos {
+		storageInfo.Disks = append(storageInfo.Disks, lstorageInfo.Disks...)
+	}
+
+	var errs []error
+	for i := range s.sets {
+		errs = append(errs, storageInfoErrs[i]...)
+	}
+
+	return storageInfo, errs
+}
+
+// StorageInfo - combines output of StorageInfo across all erasure coded object sets.
+func (s *erasureSets) LocalStorageInfo(ctx context.Context) (StorageInfo, []error) {
 	var storageInfo StorageInfo
 
 	storageInfos := make([]StorageInfo, len(s.sets))
@@ -547,7 +615,7 @@ func (s *erasureSets) StorageInfo(ctx context.Context) (StorageInfo, []error) {
 	for index := range s.sets {
 		index := index
 		g.Go(func() error {
-			storageInfos[index], storageInfoErrs[index] = s.sets[index].StorageInfo(ctx)
+			storageInfos[index], storageInfoErrs[index] = s.sets[index].LocalStorageInfo(ctx)
 			return nil
 		}, index)
 	}
@@ -630,9 +698,11 @@ func sipHashMod(key string, cardinality int, id [16]byte) int {
 	if cardinality <= 0 {
 		return -1
 	}
-	sip := siphash.New(id[:])
-	sip.Write([]byte(key))
-	return int(sip.Sum64() % uint64(cardinality))
+	// use the faster version as per siphash docs
+	// https://github.com/dchest/siphash#usage
+	k0, k1 := binary.LittleEndian.Uint64(id[0:8]), binary.LittleEndian.Uint64(id[8:16])
+	sum64 := siphash.Hash(k0, k1, []byte(key))
+	return int(sum64 % uint64(cardinality))
 }
 
 func crcHashMod(key string, cardinality int) int {
@@ -772,17 +842,10 @@ func (s *erasureSets) ListBuckets(ctx context.Context) (buckets []BucketInfo, er
 // GetObjectNInfo - returns object info and locked object ReadCloser
 func (s *erasureSets) GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.GetObjectNInfo(ctx, bucket, object, rs, h, lockType, opts)
 }
 
-// GetObject - reads an object from the hashedSet based on the object name.
-func (s *erasureSets) GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) error {
-	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
-	return set.GetObject(ctx, bucket, object, startOffset, length, writer, etag, opts)
-}
-
 func (s *erasureSets) parentDirIsObject(ctx context.Context, bucket, parent string) bool {
 	if parent == "." {
 		return false
@@ -793,7 +856,7 @@ func (s *erasureSets) parentDirIsObject(ctx context.Context, bucket, parent stri
 // PutObject - writes an object to hashedSet based on the object name.
 func (s *erasureSets) PutObject(ctx context.Context, bucket string, object string, data *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	opts.ParentIsObject = s.parentDirIsObject
 	return set.PutObject(ctx, bucket, object, data, opts)
 }
@@ -801,14 +864,14 @@ func (s *erasureSets) PutObject(ctx context.Context, bucket string, object strin
 // GetObjectInfo - reads object metadata from the hashedSet based on the object name.
 func (s *erasureSets) GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.GetObjectInfo(ctx, bucket, object, opts)
 }
 
 // DeleteObject - deletes an object from the hashedSet based on the object name.
 func (s *erasureSets) DeleteObject(ctx context.Context, bucket string, object string, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.DeleteObject(ctx, bucket, object, opts)
 }
 
@@ -860,7 +923,7 @@ func (s *erasureSets) DeleteObjects(ctx context.Context, bucket string, objects
 			delErrs[obj.origIndex] = errs[i]
 			delObjects[obj.origIndex] = dobjects[i]
 			if errs[i] == nil {
-				auditObjectErasureSet(ctx, obj.object.ObjectName, set, s.poolNumber)
+				auditObjectErasureSet(ctx, obj.object.ObjectName, set)
 			}
 		}
 	}
@@ -873,7 +936,7 @@ func (s *erasureSets) CopyObject(ctx context.Context, srcBucket, srcObject, dstB
 	srcSet := s.getHashedSet(srcObject)
 	dstSet := s.getHashedSet(dstObject)
 
-	auditObjectErasureSet(ctx, dstObject, dstSet, s.poolNumber)
+	auditObjectErasureSet(ctx, dstObject, dstSet)
 
 	cpSrcDstSame := srcSet == dstSet
 	// Check if this request is only metadata update.
@@ -909,162 +972,18 @@ func (s *erasureSets) CopyObject(ctx context.Context, srcBucket, srcObject, dstB
 	return dstSet.putObject(ctx, dstBucket, dstObject, srcInfo.PutObjReader, putOpts)
 }
 
-// FileInfoVersionsCh - file info versions channel
-type FileInfoVersionsCh struct {
-	Ch    chan FileInfoVersions
-	Prev  FileInfoVersions
-	Valid bool
-}
-
-// Pop - pops a cached entry if any, or from the cached channel.
-func (f *FileInfoVersionsCh) Pop() (fi FileInfoVersions, ok bool) {
-	if f.Valid {
-		f.Valid = false
-		return f.Prev, true
-	} // No cached entries found, read from channel
-	f.Prev, ok = <-f.Ch
-	return f.Prev, ok
-}
-
-// Push - cache an entry, for Pop() later.
-func (f *FileInfoVersionsCh) Push(fi FileInfoVersions) {
-	f.Prev = fi
-	f.Valid = true
-}
-
-// FileInfoCh - file info channel
-type FileInfoCh struct {
-	Ch    chan FileInfo
-	Prev  FileInfo
-	Valid bool
-}
-
-// Pop - pops a cached entry if any, or from the cached channel.
-func (f *FileInfoCh) Pop() (fi FileInfo, ok bool) {
-	if f.Valid {
-		f.Valid = false
-		return f.Prev, true
-	} // No cached entries found, read from channel
-	f.Prev, ok = <-f.Ch
-	return f.Prev, ok
-}
-
-// Push - cache an entry, for Pop() later.
-func (f *FileInfoCh) Push(fi FileInfo) {
-	f.Prev = fi
-	f.Valid = true
-}
-
-// Calculate lexically least entry across multiple FileInfo channels,
-// returns the lexically common entry and the total number of times
-// we found this entry. Additionally also returns a boolean
-// to indicate if the caller needs to call this function
-// again to list the next entry. It is callers responsibility
-// if the caller wishes to list N entries to call lexicallySortedEntry
-// N times until this boolean is 'false'.
-func lexicallySortedEntryVersions(entryChs []FileInfoVersionsCh, entries []FileInfoVersions, entriesValid []bool) (FileInfoVersions, int, bool) {
-	for j := range entryChs {
-		entries[j], entriesValid[j] = entryChs[j].Pop()
-	}
-
-	var isTruncated = false
-	for _, valid := range entriesValid {
-		if !valid {
-			continue
-		}
-		isTruncated = true
-		break
-	}
-
-	var lentry FileInfoVersions
-	var found bool
-	for i, valid := range entriesValid {
-		if !valid {
-			continue
-		}
-		if !found {
-			lentry = entries[i]
-			found = true
-			continue
-		}
-		if entries[i].Name < lentry.Name {
-			lentry = entries[i]
-		}
-	}
-
-	// We haven't been able to find any lexically least entry,
-	// this would mean that we don't have valid entry.
-	if !found {
-		return lentry, 0, isTruncated
-	}
-
-	lexicallySortedEntryCount := 0
-	for i, valid := range entriesValid {
-		if !valid {
-			continue
-		}
-
-		// Entries are duplicated across disks,
-		// we should simply skip such entries.
-		if lentry.Name == entries[i].Name && lentry.LatestModTime.Equal(entries[i].LatestModTime) {
-			lexicallySortedEntryCount++
-			continue
-		}
-
-		// Push all entries which are lexically higher
-		// and will be returned later in Pop()
-		entryChs[i].Push(entries[i])
-	}
-
-	return lentry, lexicallySortedEntryCount, isTruncated
-}
-
-func (s *erasureSets) startMergeWalksVersions(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}) []FileInfoVersionsCh {
-	return s.startMergeWalksVersionsN(ctx, bucket, prefix, marker, recursive, endWalkCh, -1)
-}
-
-// Starts a walk versions channel across N number of disks and returns a slice.
-// FileInfoCh which can be read from.
-func (s *erasureSets) startMergeWalksVersionsN(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}, ndisks int) []FileInfoVersionsCh {
-	var entryChs []FileInfoVersionsCh
-	var wg sync.WaitGroup
-	var mutex sync.Mutex
-	for _, set := range s.sets {
-		// Reset for the next erasure set.
-		for _, disk := range set.getLoadBalancedNDisks(ndisks) {
-			wg.Add(1)
-			go func(disk StorageAPI) {
-				defer wg.Done()
-
-				entryCh, err := disk.WalkVersions(GlobalContext, bucket, prefix, marker, recursive, endWalkCh)
-				if err != nil {
-					return
-				}
-
-				mutex.Lock()
-				entryChs = append(entryChs, FileInfoVersionsCh{
-					Ch: entryCh,
-				})
-				mutex.Unlock()
-			}(disk)
-		}
-	}
-	wg.Wait()
-	return entryChs
-}
-
 func (s *erasureSets) ListMultipartUploads(ctx context.Context, bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (result ListMultipartsInfo, err error) {
 	// In list multipart uploads we are going to treat input prefix as the object,
 	// this means that we are not supporting directory navigation.
 	set := s.getHashedSet(prefix)
-	auditObjectErasureSet(ctx, prefix, set, s.poolNumber)
+	auditObjectErasureSet(ctx, prefix, set)
 	return set.ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
 }
 
 // Initiate a new multipart upload on a hashedSet based on object name.
 func (s *erasureSets) NewMultipartUpload(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.NewMultipartUpload(ctx, bucket, object, opts)
 }
 
@@ -1072,42 +991,42 @@ func (s *erasureSets) NewMultipartUpload(ctx context.Context, bucket, object str
 func (s *erasureSets) CopyObjectPart(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, uploadID string, partID int,
 	startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (partInfo PartInfo, err error) {
 	destSet := s.getHashedSet(destObject)
-	auditObjectErasureSet(ctx, destObject, destSet, s.poolNumber)
-	return destSet.PutObjectPart(ctx, destBucket, destObject, uploadID, partID, NewPutObjReader(srcInfo.Reader, nil, nil), dstOpts)
+	auditObjectErasureSet(ctx, destObject, destSet)
+	return destSet.PutObjectPart(ctx, destBucket, destObject, uploadID, partID, NewPutObjReader(srcInfo.Reader), dstOpts)
 }
 
 // PutObjectPart - writes part of an object to hashedSet based on the object name.
 func (s *erasureSets) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.PutObjectPart(ctx, bucket, object, uploadID, partID, data, opts)
 }
 
 // GetMultipartInfo - return multipart metadata info uploaded at hashedSet.
 func (s *erasureSets) GetMultipartInfo(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) (result MultipartInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.GetMultipartInfo(ctx, bucket, object, uploadID, opts)
 }
 
 // ListObjectParts - lists all uploaded parts to an object in hashedSet.
 func (s *erasureSets) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker int, maxParts int, opts ObjectOptions) (result ListPartsInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.ListObjectParts(ctx, bucket, object, uploadID, partNumberMarker, maxParts, opts)
 }
 
 // Aborts an in-progress multipart operation on hashedSet based on the object name.
 func (s *erasureSets) AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) error {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	return set.AbortMultipartUpload(ctx, bucket, object, uploadID, opts)
 }
 
 // CompleteMultipartUpload - completes a pending multipart transaction, on hashedSet based on object name.
 func (s *erasureSets) CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error) {
 	set := s.getHashedSet(object)
-	auditObjectErasureSet(ctx, object, set, s.poolNumber)
+	auditObjectErasureSet(ctx, object, set)
 	opts.ParentIsObject = s.parentDirIsObject
 	return set.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, opts)
 }
@@ -1291,8 +1210,8 @@ func (s *erasureSets) HealFormat(ctx context.Context, dryRun bool) (res madmin.H
 	res.Before.Drives = make([]madmin.HealDriveInfo, len(beforeDrives))
 	// Copy "after" drive state too from before.
 	for k, v := range beforeDrives {
-		res.Before.Drives[k] = madmin.HealDriveInfo(v)
-		res.After.Drives[k] = madmin.HealDriveInfo(v)
+		res.Before.Drives[k] = v
+		res.After.Drives[k] = v
 	}
 
 	if countErrs(sErrs, errUnformattedDisk) == 0 {
@@ -1335,7 +1254,7 @@ func (s *erasureSets) HealFormat(ctx context.Context, dryRun bool) (res madmin.H
 			if s.erasureDisks[m][n] != nil {
 				s.erasureDisks[m][n].Close()
 			}
-
+			storageDisks[index].SetDiskLoc(s.poolIndex, m, n)
 			s.erasureDisks[m][n] = storageDisks[index]
 			s.endpointStrings[m*s.setDriveCount+n] = storageDisks[index].String()
 		}
@@ -1359,11 +1278,11 @@ func (s *erasureSets) HealBucket(ctx context.Context, bucket string, opts madmin
 		SetCount:  s.setCount,
 	}
 
-	for _, s := range s.sets {
+	for _, set := range s.sets {
 		var healResult madmin.HealResultItem
-		healResult, err = s.HealBucket(ctx, bucket, opts)
+		healResult, err = set.HealBucket(ctx, bucket, opts)
 		if err != nil {
-			return result, err
+			return result, toObjectErr(err, bucket)
 		}
 		result.Before.Drives = append(result.Before.Drives, healResult.Before.Drives...)
 		result.After.Drives = append(result.After.Drives, healResult.After.Drives...)
@@ -1384,13 +1303,13 @@ func (s *erasureSets) HealObject(ctx context.Context, bucket, object, versionID
 }
 
 // PutObjectTags - replace or add tags to an existing object
-func (s *erasureSets) PutObjectTags(ctx context.Context, bucket, object string, tags string, opts ObjectOptions) error {
+func (s *erasureSets) PutObjectTags(ctx context.Context, bucket, object string, tags string, opts ObjectOptions) (ObjectInfo, error) {
 	er := s.getHashedSet(object)
 	return er.PutObjectTags(ctx, bucket, object, tags, opts)
 }
 
 // DeleteObjectTags - delete object tags from an existing object
-func (s *erasureSets) DeleteObjectTags(ctx context.Context, bucket, object string, opts ObjectOptions) error {
+func (s *erasureSets) DeleteObjectTags(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) {
 	er := s.getHashedSet(object)
 	return er.DeleteObjectTags(ctx, bucket, object, opts)
 }