update deps (#20851)

Earlier, cluster and bucket metrics were named 
`minio_usage_last_activity_nano_seconds`.

The bucket level is now named as 
`minio_bucket_usage_last_activity_nano_seconds`

Signed-off-by: Shubhendu Ram Tripathi <shubhendu@minio.io>

.github/workflows/go-cross.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v4

.github/workflows/go-fips.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v4

.github/workflows/go-healing.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v4

.github/workflows/go-lint.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v4

.github/workflows/go-resiliency.yml

@@ -0,0 +1,39 @@
+name: Resiliency Functional Tests
+
+on:
+  pull_request:
+    branches:
+      - master
+
+# This ensures that previous jobs for the PR are canceled when the PR is
+# updated.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Go ${{ matrix.go-version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        go-version: [1.23.x]
+        os: [ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+          check-latest: true
+      - name: Build on ${{ matrix.os }}
+        if: matrix.os == 'ubuntu-latest'
+        env:
+          CGO_ENABLED: 0
+          GO111MODULE: on
+        run: |
+          sudo sysctl net.ipv6.conf.all.disable_ipv6=0
+          sudo sysctl net.ipv6.conf.default.disable_ipv6=0
+          make test-resiliency

.github/workflows/go.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v4
@@ -39,3 +39,4 @@ jobs:
           sudo sysctl net.ipv6.conf.all.disable_ipv6=0
           sudo sysctl net.ipv6.conf.default.disable_ipv6=0
           make verify
+          make test-timeout

.github/workflows/iam-integrations.yaml

@@ -61,7 +61,7 @@ jobs:
       # are turned off - i.e. if ldap="", then ldap server is not enabled for
       # the tests.
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         ldap: ["", "localhost:389"]
         etcd: ["", "http://localhost:2379"]
         openid: ["", "http://127.0.0.1:5556/dex"]

.github/workflows/mint.yml

@@ -29,7 +29,7 @@ jobs:
       - name: setup-go-step
         uses: actions/setup-go@v5
         with:
-          go-version: 1.22.x
+          go-version: 1.23.x
 
       - name: github sha short
         id: vars

.github/workflows/replication.yaml

@@ -21,7 +21,7 @@ jobs:
 
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
 
     steps:
       - uses: actions/checkout@v4
@@ -40,6 +40,7 @@ jobs:
           sudo sysctl net.ipv6.conf.all.disable_ipv6=0
           sudo sysctl net.ipv6.conf.default.disable_ipv6=0
           make test-ilm
+          make test-ilm-transition
 
       - name: Test PBAC
         run: |

.github/workflows/root-disable.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
 
     steps:

.github/workflows/run-mint.sh

@@ -7,6 +7,7 @@ export ACCESS_KEY="$2"
 export SECRET_KEY="$3"
 export JOB_NAME="$4"
 export MINT_MODE="full"
+export MINT_NO_FULL_OBJECT="true"
 
 docker system prune -f || true
 docker volume prune -f || true
@@ -15,6 +16,9 @@ docker volume rm $(docker volume ls -f dangling=true) || true
 ## change working directory
 cd .github/workflows/mint
 
+## always pull latest
+docker pull docker.io/minio/mint:edge
+
 docker-compose -f minio-${MODE}.yaml up -d
 sleep 1m
 
@@ -35,6 +39,7 @@ docker run --rm --net=mint_default \
 	-e ACCESS_KEY="${ACCESS_KEY}" \
 	-e SECRET_KEY="${SECRET_KEY}" \
 	-e ENABLE_HTTPS=0 \
+	-e MINT_NO_FULL_OBJECT="${MINT_NO_FULL_OBJECT}" \
 	-e MINT_MODE="${MINT_MODE}" \
 	docker.io/minio/mint:edge
 

.github/workflows/upgrade-ci-cd.yaml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
 
     steps:

.github/workflows/vulncheck.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.22.7
+          go-version: 1.23.2
       - name: Get official govulncheck
         run: go install golang.org/x/vuln/cmd/govulncheck@latest
         shell: bash

Dockerfile.hotfix

@@ -1,4 +1,4 @@
-FROM golang:1.22-alpine as build
+FROM golang:1.23-alpine as build
 
 ARG TARGETARCH
 ARG RELEASE

Dockerfile.release

@@ -1,4 +1,4 @@
-FROM golang:1.22-alpine AS build
+FROM golang:1.23-alpine AS build
 
 ARG TARGETARCH
 ARG RELEASE

Dockerfile.release.fips

@@ -1,4 +1,4 @@
-FROM golang:1.22-alpine AS build
+FROM golang:1.23-alpine AS build
 
 ARG TARGETARCH
 ARG RELEASE

Dockerfile.release.old_cpu

@@ -1,4 +1,4 @@
-FROM golang:1.22-alpine AS build
+FROM golang:1.23-alpine AS build
 
 ARG TARGETARCH
 ARG RELEASE

Makefile

@@ -24,7 +24,7 @@ help: ## print this help
 getdeps: ## fetch necessary dependencies
 	@mkdir -p ${GOPATH}/bin
 	@echo "Installing golangci-lint" && curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOLANGCI_DIR)
-	@echo "Installing msgp" && go install -v github.com/tinylib/msgp@v1.1.10-0.20240227114326-6d6f813fff1b
+	@echo "Installing msgp" && go install -v github.com/tinylib/msgp@v1.2.5
 	@echo "Installing stringer" && go install -v golang.org/x/tools/cmd/stringer@latest
 
 crosscompile: ## cross compile minio
@@ -60,6 +60,10 @@ test-ilm: install-race
 	@echo "Running ILM tests"
 	@env bash $(PWD)/docs/bucket/replication/setup_ilm_expiry_replication.sh
 
+test-ilm-transition: install-race
+	@echo "Running ILM tiering tests with healing"
+	@env bash $(PWD)/docs/bucket/lifecycle/setup_ilm_transition.sh
+
 test-pbac: install-race
 	@echo "Running bucket policies tests"
 	@env bash $(PWD)/docs/iam/policies/pbac-tests.sh
@@ -145,6 +149,10 @@ test-multipart: install-race ## test multipart
 	@echo "Test multipart behavior when part files are missing"
 	@(env bash $(PWD)/buildscripts/multipart-quorum-test.sh)
 
+test-timeout: install-race ## test multipart
+	@echo "Test server timeout"
+	@(env bash $(PWD)/buildscripts/test-timeout.sh)
+
 verify: install-race ## verify minio various setups
 	@echo "Verifying build with race"
 	@(env bash $(PWD)/buildscripts/verify-build.sh)
@@ -209,6 +217,10 @@ docker: build ## builds minio docker container
 	@echo "Building minio docker image '$(TAG)'"
 	@docker build -q --no-cache -t $(TAG) . -f Dockerfile
 
+test-resiliency: build
+	@echo "Running resiliency tests"
+	@(DOCKER_COMPOSE_FILE=$(PWD)/docs/resiliency/docker-compose.yaml env bash $(PWD)/docs/resiliency/resiliency-tests.sh)
+
 install-race: checks build-debugging ## builds minio to $(PWD)
 	@echo "Building minio binary with -race to './minio'"
 	@GORACE=history_size=7 CGO_ENABLED=1 go build -tags kqueue,dev -race -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null

README.md

@@ -4,7 +4,7 @@
 
 [![MinIO](https://raw.githubusercontent.com/minio/minio/master/.github/logo.svg?sanitize=true)](https://min.io)
 
-MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. 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.
+MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. 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. To learn more about what MinIO is doing for AI storage, go to [AI storage documentation](https://min.io/solutions/object-storage-for-ai).
 
 This README provides quickstart instructions on running MinIO on bare metal hardware, including container-based installations. For Kubernetes environments, use the [MinIO Kubernetes Operator](https://github.com/minio/operator/blob/master/README.md).
 

buildscripts/minio-iam-ldap-upgrade-import-test.sh

@@ -8,7 +8,7 @@
 #
 # This script assumes that LDAP server is at:
 #
-#   `localhost:1389`
+#   `localhost:389`
 #
 # if this is not the case, set the environment variable
 # `_MINIO_LDAP_TEST_SERVER`.
@@ -41,7 +41,7 @@ __init__() {
 	fi
 
 	if [ -z "$_MINIO_LDAP_TEST_SERVER" ]; then
-		export _MINIO_LDAP_TEST_SERVER=localhost:1389
+		export _MINIO_LDAP_TEST_SERVER=localhost:389
 		echo "Using default LDAP endpoint: $_MINIO_LDAP_TEST_SERVER"
 	fi
 
@@ -58,7 +58,7 @@ create_iam_content_in_old_minio() {
 	mc alias set old-minio http://localhost:9000 minioadmin minioadmin
 	mc ready old-minio
 	mc idp ldap add old-minio \
-		server_addr=localhost:1389 \
+		server_addr=localhost:389 \
 		server_insecure=on \
 		lookup_bind_dn=cn=admin,dc=min,dc=io \
 		lookup_bind_password=admin \

buildscripts/test-timeout.sh

@@ -0,0 +1,137 @@
+#!/bin/bash
+
+if [ -n "$TEST_DEBUG" ]; then
+	set -x
+fi
+
+WORK_DIR="$PWD/.verify-$RANDOM"
+MINIO_CONFIG_DIR="$WORK_DIR/.minio"
+MINIO=("$PWD/minio" --config-dir "$MINIO_CONFIG_DIR" server)
+
+if [ ! -x "$PWD/minio" ]; then
+	echo "minio executable binary not found in current directory"
+	exit 1
+fi
+
+if [ ! -x "$PWD/minio" ]; then
+	echo "minio executable binary not found in current directory"
+	exit 1
+fi
+
+trap 'catch $LINENO' ERR
+
+function purge() {
+	rm -rf "$1"
+}
+
+# shellcheck disable=SC2120
+catch() {
+	if [ $# -ne 0 ]; then
+		echo "error on line $1"
+	fi
+
+	echo "Cleaning up instances of MinIO"
+	pkill minio || true
+	pkill -9 minio || true
+	purge "$WORK_DIR"
+	if [ $# -ne 0 ]; then
+		exit $#
+	fi
+}
+
+catch
+
+function gen_put_request() {
+	hdr_sleep=$1
+	body_sleep=$2
+
+	echo "PUT /testbucket/testobject HTTP/1.1"
+	sleep $hdr_sleep
+	echo "Host: foo-header"
+	echo "User-Agent: curl/8.2.1"
+	echo "Accept: */*"
+	echo "Content-Length: 30"
+	echo ""
+
+	sleep $body_sleep
+	echo "random line 0"
+	echo "random line 1"
+	echo ""
+	echo ""
+}
+
+function send_put_object_request() {
+	hdr_timeout=$1
+	body_timeout=$2
+
+	start=$(date +%s)
+	timeout 5m bash -c "gen_put_request $hdr_timeout $body_timeout | netcat 127.0.0.1 $start_port | read" || return -1
+	[ $(($(date +%s) - start)) -gt $((srv_hdr_timeout + srv_idle_timeout + 1)) ] && return -1
+	return 0
+}
+
+function test_minio_with_timeout() {
+	start_port=$1
+
+	export MINIO_ROOT_USER=minio
+	export MINIO_ROOT_PASSWORD=minio123
+	export MC_HOST_minio="http://minio:minio123@127.0.0.1:${start_port}/"
+	export MINIO_CI_CD=1
+
+	mkdir ${WORK_DIR}
+	C_PWD=${PWD}
+	if [ ! -x "$PWD/mc" ]; then
+		MC_BUILD_DIR="mc-$RANDOM"
+		if ! git clone --quiet https://github.com/minio/mc "$MC_BUILD_DIR"; then
+			echo "failed to download https://github.com/minio/mc"
+			purge "${MC_BUILD_DIR}"
+			exit 1
+		fi
+
+		(cd "${MC_BUILD_DIR}" && go build -o "$C_PWD/mc")
+
+		# remove mc source.
+		purge "${MC_BUILD_DIR}"
+	fi
+
+	"${MINIO[@]}" --address ":$start_port" --read-header-timeout ${srv_hdr_timeout}s --idle-timeout ${srv_idle_timeout}s "${WORK_DIR}/disk/" >"${WORK_DIR}/server1.log" 2>&1 &
+	pid=$!
+	disown $pid
+	sleep 1
+
+	if ! ps -p ${pid} 1>&2 >/dev/null; then
+		echo "server1 log:"
+		cat "${WORK_DIR}/server1.log"
+		echo "FAILED"
+		purge "$WORK_DIR"
+		exit 1
+	fi
+
+	set -e
+
+	"${PWD}/mc" mb minio/testbucket
+	"${PWD}/mc" anonymous set public minio/testbucket
+
+	# slow header writing
+	send_put_object_request 20 0 && exit -1
+	"${PWD}/mc" stat minio/testbucket/testobject && exit -1
+
+	# quick header write and slow bodywrite
+	send_put_object_request 0 40 && exit -1
+	"${PWD}/mc" stat minio/testbucket/testobject && exit -1
+
+	# quick header and body write
+	send_put_object_request 1 1 || exit -1
+	"${PWD}/mc" stat minio/testbucket/testobject || exit -1
+}
+
+function main() {
+	export start_port=$(shuf -i 10000-65000 -n 1)
+	export srv_hdr_timeout=5
+	export srv_idle_timeout=5
+	export -f gen_put_request
+
+	test_minio_with_timeout ${start_port}
+}
+
+main "$@"

cmd/admin-handlers-users.go

@@ -37,6 +37,7 @@ import (
 	"github.com/minio/madmin-go/v3"
 	"github.com/minio/minio/internal/auth"
 	"github.com/minio/minio/internal/config/dns"
+	"github.com/minio/minio/internal/logger"
 	"github.com/minio/mux"
 	xldap "github.com/minio/pkg/v3/ldap"
 	"github.com/minio/pkg/v3/policy"
@@ -65,6 +66,17 @@ func (a adminAPIHandlers) RemoveUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// This API only supports removal of internal users not service accounts.
+	ok, _, err = globalIAMSys.IsServiceAccount(accessKey)
+	if err != nil {
+		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
+		return
+	}
+	if ok {
+		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errIAMActionNotAllowed), r.URL)
+		return
+	}
+
 	// When the user is root credential you are not allowed to
 	// remove the root user. Also you cannot delete yourself.
 	if accessKey == globalActiveCred.AccessKey || accessKey == cred.AccessKey {
@@ -1568,6 +1580,7 @@ func (a adminAPIHandlers) InfoCannedPolicy(w http.ResponseWriter, r *http.Reques
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errTooManyPolicies), r.URL)
 		return
 	}
+	setReqInfoPolicyName(ctx, name)
 
 	policyDoc, err := globalIAMSys.InfoPolicy(name)
 	if err != nil {
@@ -1671,6 +1684,7 @@ func (a adminAPIHandlers) RemoveCannedPolicy(w http.ResponseWriter, r *http.Requ
 
 	vars := mux.Vars(r)
 	policyName := vars["name"]
+	setReqInfoPolicyName(ctx, policyName)
 
 	if err := globalIAMSys.DeletePolicy(ctx, policyName, true); err != nil {
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
@@ -1703,6 +1717,13 @@ func (a adminAPIHandlers) AddCannedPolicy(w http.ResponseWriter, r *http.Request
 		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminResourceInvalidArgument), r.URL)
 		return
 	}
+	setReqInfoPolicyName(ctx, policyName)
+
+	// Reject policy names with commas.
+	if strings.Contains(policyName, ",") {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrPolicyInvalidName), r.URL)
+		return
+	}
 
 	// Error out if Content-Length is missing.
 	if r.ContentLength <= 0 {
@@ -1768,6 +1789,7 @@ func (a adminAPIHandlers) SetPolicyForUserOrGroup(w http.ResponseWriter, r *http
 	policyName := vars["policyName"]
 	entityName := vars["userOrGroup"]
 	isGroup := vars["isGroup"] == "true"
+	setReqInfoPolicyName(ctx, policyName)
 
 	if !isGroup {
 		ok, _, err := globalIAMSys.IsTempUser(entityName)
@@ -1853,7 +1875,7 @@ func (a adminAPIHandlers) SetPolicyForUserOrGroup(w http.ResponseWriter, r *http
 	}))
 }
 
-// ListPolicyMappingEntities - GET /minio/admin/v3/idp/builtin/polciy-entities?policy=xxx&user=xxx&group=xxx
+// ListPolicyMappingEntities - GET /minio/admin/v3/idp/builtin/policy-entities?policy=xxx&user=xxx&group=xxx
 func (a adminAPIHandlers) ListPolicyMappingEntities(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 
@@ -1955,6 +1977,7 @@ func (a adminAPIHandlers) AttachDetachPolicyBuiltin(w http.ResponseWriter, r *ht
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
 		return
 	}
+	setReqInfoPolicyName(ctx, strings.Join(addedOrRemoved, ","))
 
 	respBody := madmin.PolicyAssociationResp{
 		UpdatedAt: updatedAt,
@@ -2009,6 +2032,7 @@ func (a adminAPIHandlers) ExportIAM(w http.ResponseWriter, r *http.Request) {
 	// Get current object layer instance.
 	objectAPI, _ := validateAdminReq(ctx, w, r, policy.ExportIAMAction)
 	if objectAPI == nil {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
 		return
 	}
 	// Initialize a zip writer which will provide a zipped content
@@ -2231,17 +2255,13 @@ func (a adminAPIHandlers) ImportIAMV2(w http.ResponseWriter, r *http.Request) {
 func (a adminAPIHandlers) importIAM(w http.ResponseWriter, r *http.Request, apiVer string) {
 	ctx := r.Context()
 
-	// Get current object layer instance.
-	objectAPI := newObjectLayerFn()
+	// Validate signature, permissions and get current object layer instance.
+	objectAPI, _ := validateAdminReq(ctx, w, r, policy.ImportIAMAction)
 	if objectAPI == nil || globalNotificationSys == nil {
 		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
 		return
 	}
-	cred, owner, s3Err := validateAdminSignature(ctx, r, "")
-	if s3Err != ErrNone {
-		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
-		return
-	}
+
 	data, err := io.ReadAll(r.Body)
 	if err != nil {
 		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
@@ -2331,38 +2351,12 @@ func (a adminAPIHandlers) importIAM(w http.ResponseWriter, r *http.Request, apiV
 					return
 				}
 
-				if (cred.IsTemp() || cred.IsServiceAccount()) && cred.ParentUser == accessKey {
-					// Incoming access key matches parent user then we should
-					// reject password change requests.
-					writeErrorResponseJSON(ctx, w, importErrorWithAPIErr(ctx, ErrAddUserInvalidArgument, err, allUsersFile, accessKey), r.URL)
-					return
-				}
-
 				// Check if accessKey has beginning and end space characters, this only applies to new users.
 				if !exists && hasSpaceBE(accessKey) {
 					writeErrorResponseJSON(ctx, w, importErrorWithAPIErr(ctx, ErrAdminResourceInvalidArgument, err, allUsersFile, accessKey), r.URL)
 					return
 				}
 
-				checkDenyOnly := false
-				if accessKey == cred.AccessKey {
-					// Check that there is no explicit deny - otherwise it's allowed
-					// to change one's own password.
-					checkDenyOnly = true
-				}
-
-				if !globalIAMSys.IsAllowed(policy.Args{
-					AccountName:     cred.AccessKey,
-					Groups:          cred.Groups,
-					Action:          policy.CreateUserAdminAction,
-					ConditionValues: getConditionValues(r, "", cred),
-					IsOwner:         owner,
-					Claims:          cred.Claims,
-					DenyOnly:        checkDenyOnly,
-				}) {
-					writeErrorResponseJSON(ctx, w, importErrorWithAPIErr(ctx, ErrAccessDenied, err, allUsersFile, accessKey), r.URL)
-					return
-				}
 				if _, err = globalIAMSys.CreateUser(ctx, accessKey, ureq); err != nil {
 					failed.Users = append(failed.Users, madmin.IAMErrEntity{Name: accessKey, Error: err})
 				} else {
@@ -2462,17 +2456,6 @@ func (a adminAPIHandlers) importIAM(w http.ResponseWriter, r *http.Request, apiV
 					writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminResourceInvalidArgument), r.URL)
 					return
 				}
-				if !globalIAMSys.IsAllowed(policy.Args{
-					AccountName:     cred.AccessKey,
-					Groups:          cred.Groups,
-					Action:          policy.CreateServiceAccountAdminAction,
-					ConditionValues: getConditionValues(r, "", cred),
-					IsOwner:         owner,
-					Claims:          cred.Claims,
-				}) {
-					writeErrorResponseJSON(ctx, w, importErrorWithAPIErr(ctx, ErrAccessDenied, err, allSvcAcctsFile, user), r.URL)
-					return
-				}
 				updateReq := true
 				_, _, err = globalIAMSys.GetServiceAccount(ctx, svcAcctReq.AccessKey)
 				if err != nil {
@@ -2801,3 +2784,10 @@ func commonAddServiceAccount(r *http.Request, ldap bool) (context.Context, auth.
 
 	return ctx, cred, opts, createReq, targetUser, APIError{}
 }
+
+// setReqInfoPolicyName will set the given policyName as a tag on the context's request info,
+// so that it appears in audit logs.
+func setReqInfoPolicyName(ctx context.Context, policyName string) {
+	reqInfo := logger.GetReqInfo(ctx)
+	reqInfo.SetTags("policyName", policyName)
+}

cmd/admin-handlers-users_test.go

@@ -716,6 +716,12 @@ func (s *TestSuiteIAM) TestCannedPolicies(c *check) {
 		c.Fatalf("policy info err: %v", err)
 	}
 
+	// Check that policy with comma is rejected.
+	err = s.adm.AddCannedPolicy(ctx, "invalid,policy", policyBytes)
+	if err == nil {
+		c.Fatalf("invalid policy created successfully")
+	}
+
 	infoStr := string(info)
 	if !strings.Contains(infoStr, `"s3:PutObject"`) || !strings.Contains(infoStr, ":"+bucket+"/") {
 		c.Fatalf("policy contains unexpected content!")

cmd/admin-heal-ops.go

@@ -806,18 +806,20 @@ func (h *healSequence) healDiskMeta(objAPI ObjectLayer) error {
 	return h.healMinioSysMeta(objAPI, minioConfigPrefix)()
 }
 
-func (h *healSequence) healItems(objAPI ObjectLayer, bucketsOnly bool) error {
+func (h *healSequence) healItems(objAPI ObjectLayer) error {
 	if h.clientToken == bgHealingUUID {
 		// For background heal do nothing.
 		return nil
 	}
 
-	if err := h.healDiskMeta(objAPI); err != nil {
-		return err
+	if h.bucket == "" { // heal internal meta only during a site-wide heal
+		if err := h.healDiskMeta(objAPI); err != nil {
+			return err
+		}
 	}
 
 	// Heal buckets and objects
-	return h.healBuckets(objAPI, bucketsOnly)
+	return h.healBuckets(objAPI)
 }
 
 // traverseAndHeal - traverses on-disk data and performs healing
@@ -828,8 +830,7 @@ func (h *healSequence) healItems(objAPI ObjectLayer, bucketsOnly bool) error {
 // has to wait until a safe point is reached, such as between scanning
 // two objects.
 func (h *healSequence) traverseAndHeal(objAPI ObjectLayer) {
-	bucketsOnly := false // Heals buckets and objects also.
-	h.traverseAndHealDoneCh <- h.healItems(objAPI, bucketsOnly)
+	h.traverseAndHealDoneCh <- h.healItems(objAPI)
 	xioutil.SafeClose(h.traverseAndHealDoneCh)
 }
 
@@ -840,6 +841,7 @@ func (h *healSequence) healMinioSysMeta(objAPI ObjectLayer, metaPrefix string) f
 		// NOTE: Healing on meta is run regardless
 		// of any bucket being selected, this is to ensure that
 		// meta are always upto date and correct.
+		h.settings.Recursive = true
 		return objAPI.HealObjects(h.ctx, minioMetaBucket, metaPrefix, h.settings, func(bucket, object, versionID string, scanMode madmin.HealScanMode) error {
 			if h.isQuitting() {
 				return errHealStopSignalled
@@ -856,14 +858,14 @@ func (h *healSequence) healMinioSysMeta(objAPI ObjectLayer, metaPrefix string) f
 }
 
 // healBuckets - check for all buckets heal or just particular bucket.
-func (h *healSequence) healBuckets(objAPI ObjectLayer, bucketsOnly bool) error {
+func (h *healSequence) healBuckets(objAPI ObjectLayer) error {
 	if h.isQuitting() {
 		return errHealStopSignalled
 	}
 
 	// 1. If a bucket was specified, heal only the bucket.
 	if h.bucket != "" {
-		return h.healBucket(objAPI, h.bucket, bucketsOnly)
+		return h.healBucket(objAPI, h.bucket, false)
 	}
 
 	buckets, err := objAPI.ListBuckets(h.ctx, BucketOptions{})
@@ -877,7 +879,7 @@ func (h *healSequence) healBuckets(objAPI ObjectLayer, bucketsOnly bool) error {
 	})
 
 	for _, bucket := range buckets {
-		if err = h.healBucket(objAPI, bucket.Name, bucketsOnly); err != nil {
+		if err = h.healBucket(objAPI, bucket.Name, false); err != nil {
 			return err
 		}
 	}
@@ -895,16 +897,6 @@ func (h *healSequence) healBucket(objAPI ObjectLayer, bucket string, bucketsOnly
 		return nil
 	}
 
-	if !h.settings.Recursive {
-		if h.object != "" {
-			if err := h.healObject(bucket, h.object, "", h.settings.ScanMode); err != nil {
-				return err
-			}
-		}
-
-		return nil
-	}
-
 	if err := objAPI.HealObjects(h.ctx, bucket, h.object, h.settings, h.healObject); err != nil {
 		return errFnHealFromAPIErr(h.ctx, err)
 	}

cmd/api-errors.go

@@ -213,6 +213,7 @@ const (
 	ErrPolicyAlreadyAttached
 	ErrPolicyNotAttached
 	ErrExcessData
+	ErrPolicyInvalidName
 	// Add new error codes here.
 
 	// SSE-S3/SSE-KMS related API errors
@@ -561,6 +562,11 @@ var errorCodes = errorCodeMap{
 		Description:    "More data provided than indicated content length",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrPolicyInvalidName: {
+		Code:           "PolicyInvalidName",
+		Description:    "Policy name may not contain comma",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrPolicyTooLarge: {
 		Code:           "PolicyTooLarge",
 		Description:    "Policy exceeds the maximum allowed document size.",

cmd/api-response.go

@@ -593,8 +593,6 @@ func generateListVersionsResponse(ctx context.Context, bucket, prefix, marker, v
 			for k, v := range cleanReservedKeys(object.UserDefined) {
 				content.UserMetadata.Set(k, v)
 			}
-
-			content.UserMetadata.Set("expires", object.Expires.Format(http.TimeFormat))
 			content.Internal = &ObjectInternalInfo{
 				K: object.DataBlocks,
 				M: object.ParityBlocks,
@@ -729,7 +727,6 @@ func generateListObjectsV2Response(ctx context.Context, bucket, prefix, token, n
 				for k, v := range cleanReservedKeys(object.UserDefined) {
 					content.UserMetadata.Set(k, v)
 				}
-				content.UserMetadata.Set("expires", object.Expires.Format(http.TimeFormat))
 				content.Internal = &ObjectInternalInfo{
 					K: object.DataBlocks,
 					M: object.ParityBlocks,

cmd/background-newdisks-heal-ops.go

@@ -223,9 +223,6 @@ func (h *healingTracker) updateProgress(success, skipped bool, bytes uint64) {
 // 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: drive %q is not marked as healing", h.ID)
-	}
 	h.mu.Lock()
 	if h.ID == "" || h.PoolIndex < 0 || h.SetIndex < 0 || h.DiskIndex < 0 {
 		h.ID, _ = h.disk.GetDiskID()

cmd/batch-handlers.go

@@ -301,12 +301,12 @@ func (r *BatchJobReplicateV1) StartFromSource(ctx context.Context, api ObjectLay
 			return true
 		}
 
-		if !r.Flags.Filter.CreatedAfter.IsZero() && r.Flags.Filter.CreatedAfter.Before(oi.ModTime) {
+		if !r.Flags.Filter.CreatedAfter.IsZero() && r.Flags.Filter.CreatedAfter.After(oi.ModTime) {
 			// skip all objects that are created before the specified time.
 			return true
 		}
 
-		if !r.Flags.Filter.CreatedBefore.IsZero() && r.Flags.Filter.CreatedBefore.After(oi.ModTime) {
+		if !r.Flags.Filter.CreatedBefore.IsZero() && r.Flags.Filter.CreatedBefore.Before(oi.ModTime) {
 			// skip all objects that are created after the specified time.
 			return true
 		}
@@ -1047,12 +1047,12 @@ func (r *BatchJobReplicateV1) Start(ctx context.Context, api ObjectLayer, job Ba
 			return false
 		}
 
-		if !r.Flags.Filter.CreatedAfter.IsZero() && r.Flags.Filter.CreatedAfter.Before(info.ModTime) {
+		if !r.Flags.Filter.CreatedAfter.IsZero() && r.Flags.Filter.CreatedAfter.After(info.ModTime) {
 			// skip all objects that are created before the specified time.
 			return false
 		}
 
-		if !r.Flags.Filter.CreatedBefore.IsZero() && r.Flags.Filter.CreatedBefore.After(info.ModTime) {
+		if !r.Flags.Filter.CreatedBefore.IsZero() && r.Flags.Filter.CreatedBefore.Before(info.ModTime) {
 			// skip all objects that are created after the specified time.
 			return false
 		}

cmd/bitrot-streaming.go

@@ -20,6 +20,7 @@ package cmd
 import (
 	"bytes"
 	"context"
+	"errors"
 	"hash"
 	"io"
 	"sync"
@@ -37,12 +38,22 @@ type streamingBitrotWriter struct {
 	shardSize    int64
 	canClose     *sync.WaitGroup
 	byteBuf      []byte
+	finished     bool
 }
 
 func (b *streamingBitrotWriter) Write(p []byte) (int, error) {
 	if len(p) == 0 {
 		return 0, nil
 	}
+	if b.finished {
+		return 0, errors.New("bitrot write not allowed")
+	}
+	if int64(len(p)) > b.shardSize {
+		return 0, errors.New("unexpected bitrot buffer size")
+	}
+	if int64(len(p)) < b.shardSize {
+		b.finished = true
+	}
 	b.h.Reset()
 	b.h.Write(p)
 	hashBytes := b.h.Sum(nil)

cmd/bucket-handlers.go

@@ -1338,6 +1338,7 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
 					return
 				}
 			}
+			opts.EncryptFn = metadataEncrypter(objectEncryptionKey)
 			pReader, err = pReader.WithEncryption(hashReader, &objectEncryptionKey)
 			if err != nil {
 				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
@@ -1809,6 +1810,10 @@ func (api objectAPIHandlers) PutBucketObjectLockConfigHandler(w http.ResponseWri
 		return
 	}
 
+	// Audit log tags.
+	reqInfo := logger.GetReqInfo(ctx)
+	reqInfo.SetTags("retention", config.String())
+
 	configData, err := xml.Marshal(config)
 	if err != nil {
 		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)

cmd/bucket-lifecycle.go

@@ -71,7 +71,7 @@ func NewLifecycleSys() *LifecycleSys {
 	return &LifecycleSys{}
 }
 
-func ilmTrace(startTime time.Time, duration time.Duration, oi ObjectInfo, event string, metadata map[string]string) madmin.TraceInfo {
+func ilmTrace(startTime time.Time, duration time.Duration, oi ObjectInfo, event string, metadata map[string]string, err string) madmin.TraceInfo {
 	sz, _ := oi.GetActualSize()
 	return madmin.TraceInfo{
 		TraceType: madmin.TraceILM,
@@ -81,18 +81,22 @@ func ilmTrace(startTime time.Time, duration time.Duration, oi ObjectInfo, event
 		Duration:  duration,
 		Path:      pathJoin(oi.Bucket, oi.Name),
 		Bytes:     sz,
-		Error:     "",
+		Error:     err,
 		Message:   getSource(4),
 		Custom:    metadata,
 	}
 }
 
-func (sys *LifecycleSys) trace(oi ObjectInfo) func(event string, metadata map[string]string) {
+func (sys *LifecycleSys) trace(oi ObjectInfo) func(event string, metadata map[string]string, err error) {
 	startTime := time.Now()
-	return func(event string, metadata map[string]string) {
+	return func(event string, metadata map[string]string, err error) {
 		duration := time.Since(startTime)
 		if globalTrace.NumSubscribers(madmin.TraceILM) > 0 {
-			globalTrace.Publish(ilmTrace(startTime, duration, oi, event, metadata))
+			e := ""
+			if err != nil {
+				e = err.Error()
+			}
+			globalTrace.Publish(ilmTrace(startTime, duration, oi, event, metadata, e))
 		}
 	}
 }
@@ -348,7 +352,7 @@ func (es *expiryState) Worker(input <-chan expiryOp) {
 				traceFn := globalLifecycleSys.trace(oi)
 				if !oi.TransitionedObject.FreeVersion {
 					// nothing to be done
-					return
+					continue
 				}
 
 				ignoreNotFoundErr := func(err error) error {
@@ -362,7 +366,8 @@ func (es *expiryState) Worker(input <-chan expiryOp) {
 				err := deleteObjectFromRemoteTier(es.ctx, oi.TransitionedObject.Name, oi.TransitionedObject.VersionID, oi.TransitionedObject.Tier)
 				if ignoreNotFoundErr(err) != nil {
 					transitionLogIf(es.ctx, err)
-					return
+					traceFn(ILMFreeVersionDelete, nil, err)
+					continue
 				}
 
 				// Remove this free version

cmd/bucket-listobjects-handlers.go

@@ -245,7 +245,7 @@ func parseRequestToken(token string) (subToken string, nodeIndex int) {
 
 func proxyRequestByToken(ctx context.Context, w http.ResponseWriter, r *http.Request, token string) (string, bool) {
 	subToken, nodeIndex := parseRequestToken(token)
-	if nodeIndex > 0 {
+	if nodeIndex >= 0 {
 		return subToken, proxyRequestByNodeIndex(ctx, w, r, nodeIndex)
 	}
 	return subToken, false

cmd/bucket-replication.go

@@ -53,8 +53,6 @@ import (
 	"github.com/minio/minio/internal/once"
 	"github.com/tinylib/msgp/msgp"
 	"github.com/zeebo/xxh3"
-	"golang.org/x/exp/maps"
-	"golang.org/x/exp/slices"
 )
 
 const (
@@ -780,8 +778,9 @@ func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo, part
 	isSSEC := crypto.SSEC.IsEncrypted(objInfo.UserDefined)
 
 	for k, v := range objInfo.UserDefined {
+		_, isValidSSEHeader := validSSEReplicationHeaders[k]
 		// In case of SSE-C objects copy the allowed internal headers as well
-		if !isSSEC || !slices.Contains(maps.Keys(validSSEReplicationHeaders), k) {
+		if !isSSEC || !isValidSSEHeader {
 			if stringsHasPrefixFold(k, ReservedMetadataPrefixLower) {
 				continue
 			}
@@ -789,7 +788,7 @@ func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo, part
 				continue
 			}
 		}
-		if slices.Contains(maps.Keys(validSSEReplicationHeaders), k) {
+		if isValidSSEHeader {
 			meta[validSSEReplicationHeaders[k]] = v
 		} else {
 			meta[k] = v

cmd/bucket-stats.go

@@ -108,18 +108,18 @@ func (l ReplicationLastHour) merge(o ReplicationLastHour) (merged ReplicationLas
 
 // Add  a new duration data
 func (l *ReplicationLastHour) addsize(sz int64) {
-	min := time.Now().Unix() / 60
-	l.forwardTo(min)
-	winIdx := min % 60
-	l.Totals[winIdx].merge(AccElem{Total: min, Size: sz, N: 1})
-	l.LastMin = min
+	minutes := time.Now().Unix() / 60
+	l.forwardTo(minutes)
+	winIdx := minutes % 60
+	l.Totals[winIdx].merge(AccElem{Total: minutes, Size: sz, N: 1})
+	l.LastMin = minutes
 }
 
 // Merge all recorded counts of last hour into one
 func (l *ReplicationLastHour) getTotal() AccElem {
 	var res AccElem
-	min := time.Now().Unix() / 60
-	l.forwardTo(min)
+	minutes := time.Now().Unix() / 60
+	l.forwardTo(minutes)
 	for _, elem := range l.Totals[:] {
 		res.merge(elem)
 	}

cmd/data-scanner.go

@@ -1325,10 +1325,13 @@ func applyExpiryOnNonTransitionedObjects(ctx context.Context, objLayer ObjectLay
 	dobj, err = objLayer.DeleteObject(ctx, obj.Bucket, encodeDirObject(obj.Name), opts)
 	if err != nil {
 		if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
+			traceFn(ILMExpiry, nil, nil)
 			return false
 		}
 		// Assume it is still there.
-		ilmLogOnceIf(ctx, fmt.Errorf("DeleteObject(%s, %s): %w", obj.Bucket, obj.Name, err), "non-transition-expiry"+obj.Name)
+		err := fmt.Errorf("DeleteObject(%s, %s): %w", obj.Bucket, obj.Name, err)
+		ilmLogOnceIf(ctx, err, "non-transition-expiry"+obj.Name)
+		traceFn(ILMExpiry, nil, err)
 		return false
 	}
 	if dobj.Name == "" {
@@ -1549,7 +1552,7 @@ const (
 	ILMTransition = " ilm:transition"
 )
 
-func auditLogLifecycle(ctx context.Context, oi ObjectInfo, event string, tags map[string]string, traceFn func(event string, metadata map[string]string)) {
+func auditLogLifecycle(ctx context.Context, oi ObjectInfo, event string, tags map[string]string, traceFn func(event string, metadata map[string]string, err error)) {
 	var apiName string
 	switch event {
 	case ILMExpiry:
@@ -1567,5 +1570,5 @@ func auditLogLifecycle(ctx context.Context, oi ObjectInfo, event string, tags ma
 		VersionID: oi.VersionID,
 		Tags:      tags,
 	})
-	traceFn(event, tags)
+	traceFn(event, tags, nil)
 }

cmd/data-usage-cache.go

@@ -39,6 +39,8 @@ import (
 	"github.com/valyala/bytebufferpool"
 )
 
+//msgp:clearomitted
+
 //go:generate msgp -file $GOFILE -unexported
 
 // dataUsageHash is the hash type used.

cmd/data-usage-cache_gen.go

@@ -1633,6 +1633,8 @@ func (z *dataUsageEntry) DecodeMsg(dc *msgp.Reader) (err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, err = dc.ReadMapKeyPtr()
@@ -1719,12 +1721,95 @@ func (z *dataUsageEntry) DecodeMsg(dc *msgp.Reader) (err error) {
 				if z.AllTierStats == nil {
 					z.AllTierStats = new(allTierStats)
 				}
-				err = z.AllTierStats.DecodeMsg(dc)
+				var zb0004 uint32
+				zb0004, err = dc.ReadMapHeader()
 				if err != nil {
 					err = msgp.WrapError(err, "AllTierStats")
 					return
 				}
+				for zb0004 > 0 {
+					zb0004--
+					field, err = dc.ReadMapKeyPtr()
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats")
+						return
+					}
+					switch msgp.UnsafeString(field) {
+					case "ts":
+						var zb0005 uint32
+						zb0005, err = dc.ReadMapHeader()
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats", "Tiers")
+							return
+						}
+						if z.AllTierStats.Tiers == nil {
+							z.AllTierStats.Tiers = make(map[string]tierStats, zb0005)
+						} else if len(z.AllTierStats.Tiers) > 0 {
+							for key := range z.AllTierStats.Tiers {
+								delete(z.AllTierStats.Tiers, key)
+							}
+						}
+						for zb0005 > 0 {
+							zb0005--
+							var za0003 string
+							var za0004 tierStats
+							za0003, err = dc.ReadString()
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers")
+								return
+							}
+							var zb0006 uint32
+							zb0006, err = dc.ReadMapHeader()
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+								return
+							}
+							for zb0006 > 0 {
+								zb0006--
+								field, err = dc.ReadMapKeyPtr()
+								if err != nil {
+									err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+									return
+								}
+								switch msgp.UnsafeString(field) {
+								case "ts":
+									za0004.TotalSize, err = dc.ReadUint64()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "TotalSize")
+										return
+									}
+								case "nv":
+									za0004.NumVersions, err = dc.ReadInt()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumVersions")
+										return
+									}
+								case "no":
+									za0004.NumObjects, err = dc.ReadInt()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumObjects")
+										return
+									}
+								default:
+									err = dc.Skip()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+										return
+									}
+								}
+							}
+							z.AllTierStats.Tiers[za0003] = za0004
+						}
+					default:
+						err = dc.Skip()
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats")
+							return
+						}
+					}
+				}
 			}
+			zb0001Mask |= 0x1
 		case "c":
 			z.Compacted, err = dc.ReadBool()
 			if err != nil {
@@ -1739,6 +1824,11 @@ func (z *dataUsageEntry) DecodeMsg(dc *msgp.Reader) (err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.AllTierStats = nil
+	}
+
 	return
 }
 
@@ -1757,121 +1847,166 @@ func (z *dataUsageEntry) EncodeMsg(en *msgp.Writer) (err error) {
 	if err != nil {
 		return
 	}
-	if zb0001Len == 0 {
-		return
-	}
-	// write "ch"
-	err = en.Append(0xa2, 0x63, 0x68)
-	if err != nil {
-		return
-	}
-	err = z.Children.EncodeMsg(en)
-	if err != nil {
-		err = msgp.WrapError(err, "Children")
-		return
-	}
-	// write "sz"
-	err = en.Append(0xa2, 0x73, 0x7a)
-	if err != nil {
-		return
-	}
-	err = en.WriteInt64(z.Size)
-	if err != nil {
-		err = msgp.WrapError(err, "Size")
-		return
-	}
-	// write "os"
-	err = en.Append(0xa2, 0x6f, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteUint64(z.Objects)
-	if err != nil {
-		err = msgp.WrapError(err, "Objects")
-		return
-	}
-	// write "vs"
-	err = en.Append(0xa2, 0x76, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteUint64(z.Versions)
-	if err != nil {
-		err = msgp.WrapError(err, "Versions")
-		return
-	}
-	// write "dms"
-	err = en.Append(0xa3, 0x64, 0x6d, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteUint64(z.DeleteMarkers)
-	if err != nil {
-		err = msgp.WrapError(err, "DeleteMarkers")
-		return
-	}
-	// write "szs"
-	err = en.Append(0xa3, 0x73, 0x7a, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteArrayHeader(uint32(dataUsageBucketLen))
-	if err != nil {
-		err = msgp.WrapError(err, "ObjSizes")
-		return
-	}
-	for za0001 := range z.ObjSizes {
-		err = en.WriteUint64(z.ObjSizes[za0001])
-		if err != nil {
-			err = msgp.WrapError(err, "ObjSizes", za0001)
-			return
-		}
-	}
-	// write "vh"
-	err = en.Append(0xa2, 0x76, 0x68)
-	if err != nil {
-		return
-	}
-	err = en.WriteArrayHeader(uint32(dataUsageVersionLen))
-	if err != nil {
-		err = msgp.WrapError(err, "ObjVersions")
-		return
-	}
-	for za0002 := range z.ObjVersions {
-		err = en.WriteUint64(z.ObjVersions[za0002])
-		if err != nil {
-			err = msgp.WrapError(err, "ObjVersions", za0002)
-			return
-		}
-	}
-	if (zb0001Mask & 0x80) == 0 { // if not omitted
-		// write "ats"
-		err = en.Append(0xa3, 0x61, 0x74, 0x73)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// write "ch"
+		err = en.Append(0xa2, 0x63, 0x68)
 		if err != nil {
 			return
 		}
-		if z.AllTierStats == nil {
-			err = en.WriteNil()
+		err = z.Children.EncodeMsg(en)
+		if err != nil {
+			err = msgp.WrapError(err, "Children")
+			return
+		}
+		// write "sz"
+		err = en.Append(0xa2, 0x73, 0x7a)
+		if err != nil {
+			return
+		}
+		err = en.WriteInt64(z.Size)
+		if err != nil {
+			err = msgp.WrapError(err, "Size")
+			return
+		}
+		// write "os"
+		err = en.Append(0xa2, 0x6f, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteUint64(z.Objects)
+		if err != nil {
+			err = msgp.WrapError(err, "Objects")
+			return
+		}
+		// write "vs"
+		err = en.Append(0xa2, 0x76, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteUint64(z.Versions)
+		if err != nil {
+			err = msgp.WrapError(err, "Versions")
+			return
+		}
+		// write "dms"
+		err = en.Append(0xa3, 0x64, 0x6d, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteUint64(z.DeleteMarkers)
+		if err != nil {
+			err = msgp.WrapError(err, "DeleteMarkers")
+			return
+		}
+		// write "szs"
+		err = en.Append(0xa3, 0x73, 0x7a, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteArrayHeader(uint32(dataUsageBucketLen))
+		if err != nil {
+			err = msgp.WrapError(err, "ObjSizes")
+			return
+		}
+		for za0001 := range z.ObjSizes {
+			err = en.WriteUint64(z.ObjSizes[za0001])
 			if err != nil {
-				return
-			}
-		} else {
-			err = z.AllTierStats.EncodeMsg(en)
-			if err != nil {
-				err = msgp.WrapError(err, "AllTierStats")
+				err = msgp.WrapError(err, "ObjSizes", za0001)
 				return
 			}
 		}
-	}
-	// write "c"
-	err = en.Append(0xa1, 0x63)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.Compacted)
-	if err != nil {
-		err = msgp.WrapError(err, "Compacted")
-		return
+		// write "vh"
+		err = en.Append(0xa2, 0x76, 0x68)
+		if err != nil {
+			return
+		}
+		err = en.WriteArrayHeader(uint32(dataUsageVersionLen))
+		if err != nil {
+			err = msgp.WrapError(err, "ObjVersions")
+			return
+		}
+		for za0002 := range z.ObjVersions {
+			err = en.WriteUint64(z.ObjVersions[za0002])
+			if err != nil {
+				err = msgp.WrapError(err, "ObjVersions", za0002)
+				return
+			}
+		}
+		if (zb0001Mask & 0x80) == 0 { // if not omitted
+			// write "ats"
+			err = en.Append(0xa3, 0x61, 0x74, 0x73)
+			if err != nil {
+				return
+			}
+			if z.AllTierStats == nil {
+				err = en.WriteNil()
+				if err != nil {
+					return
+				}
+			} else {
+				// map header, size 1
+				// write "ts"
+				err = en.Append(0x81, 0xa2, 0x74, 0x73)
+				if err != nil {
+					return
+				}
+				err = en.WriteMapHeader(uint32(len(z.AllTierStats.Tiers)))
+				if err != nil {
+					err = msgp.WrapError(err, "AllTierStats", "Tiers")
+					return
+				}
+				for za0003, za0004 := range z.AllTierStats.Tiers {
+					err = en.WriteString(za0003)
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats", "Tiers")
+						return
+					}
+					// map header, size 3
+					// write "ts"
+					err = en.Append(0x83, 0xa2, 0x74, 0x73)
+					if err != nil {
+						return
+					}
+					err = en.WriteUint64(za0004.TotalSize)
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "TotalSize")
+						return
+					}
+					// write "nv"
+					err = en.Append(0xa2, 0x6e, 0x76)
+					if err != nil {
+						return
+					}
+					err = en.WriteInt(za0004.NumVersions)
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumVersions")
+						return
+					}
+					// write "no"
+					err = en.Append(0xa2, 0x6e, 0x6f)
+					if err != nil {
+						return
+					}
+					err = en.WriteInt(za0004.NumObjects)
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumObjects")
+						return
+					}
+				}
+			}
+		}
+		// write "c"
+		err = en.Append(0xa1, 0x63)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.Compacted)
+		if err != nil {
+			err = msgp.WrapError(err, "Compacted")
+			return
+		}
 	}
 	return
 }
@@ -1889,56 +2024,69 @@ func (z *dataUsageEntry) MarshalMsg(b []byte) (o []byte, err error) {
 	}
 	// variable map header, size zb0001Len
 	o = append(o, 0x80|uint8(zb0001Len))
-	if zb0001Len == 0 {
-		return
-	}
-	// string "ch"
-	o = append(o, 0xa2, 0x63, 0x68)
-	o, err = z.Children.MarshalMsg(o)
-	if err != nil {
-		err = msgp.WrapError(err, "Children")
-		return
-	}
-	// string "sz"
-	o = append(o, 0xa2, 0x73, 0x7a)
-	o = msgp.AppendInt64(o, z.Size)
-	// string "os"
-	o = append(o, 0xa2, 0x6f, 0x73)
-	o = msgp.AppendUint64(o, z.Objects)
-	// string "vs"
-	o = append(o, 0xa2, 0x76, 0x73)
-	o = msgp.AppendUint64(o, z.Versions)
-	// string "dms"
-	o = append(o, 0xa3, 0x64, 0x6d, 0x73)
-	o = msgp.AppendUint64(o, z.DeleteMarkers)
-	// string "szs"
-	o = append(o, 0xa3, 0x73, 0x7a, 0x73)
-	o = msgp.AppendArrayHeader(o, uint32(dataUsageBucketLen))
-	for za0001 := range z.ObjSizes {
-		o = msgp.AppendUint64(o, z.ObjSizes[za0001])
-	}
-	// string "vh"
-	o = append(o, 0xa2, 0x76, 0x68)
-	o = msgp.AppendArrayHeader(o, uint32(dataUsageVersionLen))
-	for za0002 := range z.ObjVersions {
-		o = msgp.AppendUint64(o, z.ObjVersions[za0002])
-	}
-	if (zb0001Mask & 0x80) == 0 { // if not omitted
-		// string "ats"
-		o = append(o, 0xa3, 0x61, 0x74, 0x73)
-		if z.AllTierStats == nil {
-			o = msgp.AppendNil(o)
-		} else {
-			o, err = z.AllTierStats.MarshalMsg(o)
-			if err != nil {
-				err = msgp.WrapError(err, "AllTierStats")
-				return
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// string "ch"
+		o = append(o, 0xa2, 0x63, 0x68)
+		o, err = z.Children.MarshalMsg(o)
+		if err != nil {
+			err = msgp.WrapError(err, "Children")
+			return
+		}
+		// string "sz"
+		o = append(o, 0xa2, 0x73, 0x7a)
+		o = msgp.AppendInt64(o, z.Size)
+		// string "os"
+		o = append(o, 0xa2, 0x6f, 0x73)
+		o = msgp.AppendUint64(o, z.Objects)
+		// string "vs"
+		o = append(o, 0xa2, 0x76, 0x73)
+		o = msgp.AppendUint64(o, z.Versions)
+		// string "dms"
+		o = append(o, 0xa3, 0x64, 0x6d, 0x73)
+		o = msgp.AppendUint64(o, z.DeleteMarkers)
+		// string "szs"
+		o = append(o, 0xa3, 0x73, 0x7a, 0x73)
+		o = msgp.AppendArrayHeader(o, uint32(dataUsageBucketLen))
+		for za0001 := range z.ObjSizes {
+			o = msgp.AppendUint64(o, z.ObjSizes[za0001])
+		}
+		// string "vh"
+		o = append(o, 0xa2, 0x76, 0x68)
+		o = msgp.AppendArrayHeader(o, uint32(dataUsageVersionLen))
+		for za0002 := range z.ObjVersions {
+			o = msgp.AppendUint64(o, z.ObjVersions[za0002])
+		}
+		if (zb0001Mask & 0x80) == 0 { // if not omitted
+			// string "ats"
+			o = append(o, 0xa3, 0x61, 0x74, 0x73)
+			if z.AllTierStats == nil {
+				o = msgp.AppendNil(o)
+			} else {
+				// map header, size 1
+				// string "ts"
+				o = append(o, 0x81, 0xa2, 0x74, 0x73)
+				o = msgp.AppendMapHeader(o, uint32(len(z.AllTierStats.Tiers)))
+				for za0003, za0004 := range z.AllTierStats.Tiers {
+					o = msgp.AppendString(o, za0003)
+					// map header, size 3
+					// string "ts"
+					o = append(o, 0x83, 0xa2, 0x74, 0x73)
+					o = msgp.AppendUint64(o, za0004.TotalSize)
+					// string "nv"
+					o = append(o, 0xa2, 0x6e, 0x76)
+					o = msgp.AppendInt(o, za0004.NumVersions)
+					// string "no"
+					o = append(o, 0xa2, 0x6e, 0x6f)
+					o = msgp.AppendInt(o, za0004.NumObjects)
+				}
 			}
 		}
+		// string "c"
+		o = append(o, 0xa1, 0x63)
+		o = msgp.AppendBool(o, z.Compacted)
 	}
-	// string "c"
-	o = append(o, 0xa1, 0x63)
-	o = msgp.AppendBool(o, z.Compacted)
 	return
 }
 
@@ -1952,6 +2100,8 @@ func (z *dataUsageEntry) UnmarshalMsg(bts []byte) (o []byte, err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, bts, err = msgp.ReadMapKeyZC(bts)
@@ -2037,12 +2187,95 @@ func (z *dataUsageEntry) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				if z.AllTierStats == nil {
 					z.AllTierStats = new(allTierStats)
 				}
-				bts, err = z.AllTierStats.UnmarshalMsg(bts)
+				var zb0004 uint32
+				zb0004, bts, err = msgp.ReadMapHeaderBytes(bts)
 				if err != nil {
 					err = msgp.WrapError(err, "AllTierStats")
 					return
 				}
+				for zb0004 > 0 {
+					zb0004--
+					field, bts, err = msgp.ReadMapKeyZC(bts)
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats")
+						return
+					}
+					switch msgp.UnsafeString(field) {
+					case "ts":
+						var zb0005 uint32
+						zb0005, bts, err = msgp.ReadMapHeaderBytes(bts)
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats", "Tiers")
+							return
+						}
+						if z.AllTierStats.Tiers == nil {
+							z.AllTierStats.Tiers = make(map[string]tierStats, zb0005)
+						} else if len(z.AllTierStats.Tiers) > 0 {
+							for key := range z.AllTierStats.Tiers {
+								delete(z.AllTierStats.Tiers, key)
+							}
+						}
+						for zb0005 > 0 {
+							var za0003 string
+							var za0004 tierStats
+							zb0005--
+							za0003, bts, err = msgp.ReadStringBytes(bts)
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers")
+								return
+							}
+							var zb0006 uint32
+							zb0006, bts, err = msgp.ReadMapHeaderBytes(bts)
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+								return
+							}
+							for zb0006 > 0 {
+								zb0006--
+								field, bts, err = msgp.ReadMapKeyZC(bts)
+								if err != nil {
+									err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+									return
+								}
+								switch msgp.UnsafeString(field) {
+								case "ts":
+									za0004.TotalSize, bts, err = msgp.ReadUint64Bytes(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "TotalSize")
+										return
+									}
+								case "nv":
+									za0004.NumVersions, bts, err = msgp.ReadIntBytes(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumVersions")
+										return
+									}
+								case "no":
+									za0004.NumObjects, bts, err = msgp.ReadIntBytes(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumObjects")
+										return
+									}
+								default:
+									bts, err = msgp.Skip(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+										return
+									}
+								}
+							}
+							z.AllTierStats.Tiers[za0003] = za0004
+						}
+					default:
+						bts, err = msgp.Skip(bts)
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats")
+							return
+						}
+					}
+				}
 			}
+			zb0001Mask |= 0x1
 		case "c":
 			z.Compacted, bts, err = msgp.ReadBoolBytes(bts)
 			if err != nil {
@@ -2057,6 +2290,11 @@ func (z *dataUsageEntry) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.AllTierStats = nil
+	}
+
 	o = bts
 	return
 }
@@ -2067,7 +2305,13 @@ func (z *dataUsageEntry) Msgsize() (s int) {
 	if z.AllTierStats == nil {
 		s += msgp.NilSize
 	} else {
-		s += z.AllTierStats.Msgsize()
+		s += 1 + 3 + msgp.MapHeaderSize
+		if z.AllTierStats.Tiers != nil {
+			for za0003, za0004 := range z.AllTierStats.Tiers {
+				_ = za0004
+				s += msgp.StringPrefixSize + len(za0003) + 1 + 3 + msgp.Uint64Size + 3 + msgp.IntSize + 3 + msgp.IntSize
+			}
+		}
 	}
 	s += 2 + msgp.BoolSize
 	return
@@ -2628,6 +2872,8 @@ func (z *dataUsageEntryV7) DecodeMsg(dc *msgp.Reader) (err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, err = dc.ReadMapKeyPtr()
@@ -2714,12 +2960,95 @@ func (z *dataUsageEntryV7) DecodeMsg(dc *msgp.Reader) (err error) {
 				if z.AllTierStats == nil {
 					z.AllTierStats = new(allTierStats)
 				}
-				err = z.AllTierStats.DecodeMsg(dc)
+				var zb0004 uint32
+				zb0004, err = dc.ReadMapHeader()
 				if err != nil {
 					err = msgp.WrapError(err, "AllTierStats")
 					return
 				}
+				for zb0004 > 0 {
+					zb0004--
+					field, err = dc.ReadMapKeyPtr()
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats")
+						return
+					}
+					switch msgp.UnsafeString(field) {
+					case "ts":
+						var zb0005 uint32
+						zb0005, err = dc.ReadMapHeader()
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats", "Tiers")
+							return
+						}
+						if z.AllTierStats.Tiers == nil {
+							z.AllTierStats.Tiers = make(map[string]tierStats, zb0005)
+						} else if len(z.AllTierStats.Tiers) > 0 {
+							for key := range z.AllTierStats.Tiers {
+								delete(z.AllTierStats.Tiers, key)
+							}
+						}
+						for zb0005 > 0 {
+							zb0005--
+							var za0003 string
+							var za0004 tierStats
+							za0003, err = dc.ReadString()
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers")
+								return
+							}
+							var zb0006 uint32
+							zb0006, err = dc.ReadMapHeader()
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+								return
+							}
+							for zb0006 > 0 {
+								zb0006--
+								field, err = dc.ReadMapKeyPtr()
+								if err != nil {
+									err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+									return
+								}
+								switch msgp.UnsafeString(field) {
+								case "ts":
+									za0004.TotalSize, err = dc.ReadUint64()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "TotalSize")
+										return
+									}
+								case "nv":
+									za0004.NumVersions, err = dc.ReadInt()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumVersions")
+										return
+									}
+								case "no":
+									za0004.NumObjects, err = dc.ReadInt()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumObjects")
+										return
+									}
+								default:
+									err = dc.Skip()
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+										return
+									}
+								}
+							}
+							z.AllTierStats.Tiers[za0003] = za0004
+						}
+					default:
+						err = dc.Skip()
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats")
+							return
+						}
+					}
+				}
 			}
+			zb0001Mask |= 0x1
 		case "c":
 			z.Compacted, err = dc.ReadBool()
 			if err != nil {
@@ -2734,6 +3063,11 @@ func (z *dataUsageEntryV7) DecodeMsg(dc *msgp.Reader) (err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.AllTierStats = nil
+	}
+
 	return
 }
 
@@ -2747,6 +3081,8 @@ func (z *dataUsageEntryV7) UnmarshalMsg(bts []byte) (o []byte, err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, bts, err = msgp.ReadMapKeyZC(bts)
@@ -2832,12 +3168,95 @@ func (z *dataUsageEntryV7) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				if z.AllTierStats == nil {
 					z.AllTierStats = new(allTierStats)
 				}
-				bts, err = z.AllTierStats.UnmarshalMsg(bts)
+				var zb0004 uint32
+				zb0004, bts, err = msgp.ReadMapHeaderBytes(bts)
 				if err != nil {
 					err = msgp.WrapError(err, "AllTierStats")
 					return
 				}
+				for zb0004 > 0 {
+					zb0004--
+					field, bts, err = msgp.ReadMapKeyZC(bts)
+					if err != nil {
+						err = msgp.WrapError(err, "AllTierStats")
+						return
+					}
+					switch msgp.UnsafeString(field) {
+					case "ts":
+						var zb0005 uint32
+						zb0005, bts, err = msgp.ReadMapHeaderBytes(bts)
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats", "Tiers")
+							return
+						}
+						if z.AllTierStats.Tiers == nil {
+							z.AllTierStats.Tiers = make(map[string]tierStats, zb0005)
+						} else if len(z.AllTierStats.Tiers) > 0 {
+							for key := range z.AllTierStats.Tiers {
+								delete(z.AllTierStats.Tiers, key)
+							}
+						}
+						for zb0005 > 0 {
+							var za0003 string
+							var za0004 tierStats
+							zb0005--
+							za0003, bts, err = msgp.ReadStringBytes(bts)
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers")
+								return
+							}
+							var zb0006 uint32
+							zb0006, bts, err = msgp.ReadMapHeaderBytes(bts)
+							if err != nil {
+								err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+								return
+							}
+							for zb0006 > 0 {
+								zb0006--
+								field, bts, err = msgp.ReadMapKeyZC(bts)
+								if err != nil {
+									err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+									return
+								}
+								switch msgp.UnsafeString(field) {
+								case "ts":
+									za0004.TotalSize, bts, err = msgp.ReadUint64Bytes(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "TotalSize")
+										return
+									}
+								case "nv":
+									za0004.NumVersions, bts, err = msgp.ReadIntBytes(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumVersions")
+										return
+									}
+								case "no":
+									za0004.NumObjects, bts, err = msgp.ReadIntBytes(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003, "NumObjects")
+										return
+									}
+								default:
+									bts, err = msgp.Skip(bts)
+									if err != nil {
+										err = msgp.WrapError(err, "AllTierStats", "Tiers", za0003)
+										return
+									}
+								}
+							}
+							z.AllTierStats.Tiers[za0003] = za0004
+						}
+					default:
+						bts, err = msgp.Skip(bts)
+						if err != nil {
+							err = msgp.WrapError(err, "AllTierStats")
+							return
+						}
+					}
+				}
 			}
+			zb0001Mask |= 0x1
 		case "c":
 			z.Compacted, bts, err = msgp.ReadBoolBytes(bts)
 			if err != nil {
@@ -2852,6 +3271,11 @@ func (z *dataUsageEntryV7) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.AllTierStats = nil
+	}
+
 	o = bts
 	return
 }
@@ -2862,7 +3286,13 @@ func (z *dataUsageEntryV7) Msgsize() (s int) {
 	if z.AllTierStats == nil {
 		s += msgp.NilSize
 	} else {
-		s += z.AllTierStats.Msgsize()
+		s += 1 + 3 + msgp.MapHeaderSize
+		if z.AllTierStats.Tiers != nil {
+			for za0003, za0004 := range z.AllTierStats.Tiers {
+				_ = za0004
+				s += msgp.StringPrefixSize + len(za0003) + 1 + 3 + msgp.Uint64Size + 3 + msgp.IntSize + 3 + msgp.IntSize
+			}
+		}
 	}
 	s += 2 + msgp.BoolSize
 	return

cmd/dynamic-timeouts.go

@@ -117,12 +117,12 @@ func (dt *dynamicTimeout) logEntry(duration time.Duration) {
 // adjust changes the value of the dynamic timeout based on the
 // previous results
 func (dt *dynamicTimeout) adjust(entries [dynamicTimeoutLogSize]time.Duration) {
-	failures, max := 0, time.Duration(0)
+	failures, maxDur := 0, time.Duration(0)
 	for _, dur := range entries[:] {
 		if dur == maxDuration {
 			failures++
-		} else if dur > max {
-			max = dur
+		} else if dur > maxDur {
+			maxDur = dur
 		}
 	}
 
@@ -144,12 +144,12 @@ func (dt *dynamicTimeout) adjust(entries [dynamicTimeoutLogSize]time.Duration) {
 	} else if failPct < dynamicTimeoutDecreaseThresholdPct {
 		// We are hitting the timeout relatively few times,
 		// so decrease the timeout towards 25 % of maximum time spent.
-		max = max * 125 / 100
+		maxDur = maxDur * 125 / 100
 
 		timeout := atomic.LoadInt64(&dt.timeout)
-		if max < time.Duration(timeout) {
+		if maxDur < time.Duration(timeout) {
 			// Move 50% toward the max.
-			timeout = (int64(max) + timeout) / 2
+			timeout = (int64(maxDur) + timeout) / 2
 		}
 		if timeout < dt.minimum {
 			timeout = dt.minimum

cmd/encryption-v1.go

@@ -109,7 +109,7 @@ func kmsKeyIDFromMetadata(metadata map[string]string) string {
 // be AWS S3 compliant.
 //
 // DecryptETags uses a KMS bulk decryption API, if available, which
-// is more efficient than decrypting ETags sequentually.
+// is more efficient than decrypting ETags sequentially.
 func DecryptETags(ctx context.Context, k *kms.KMS, objects []ObjectInfo) error {
 	const BatchSize = 250 // We process the objects in batches - 250 is a reasonable default.
 	var (

cmd/endpoint.go

@@ -26,6 +26,7 @@ import (
 	"path/filepath"
 	"reflect"
 	"runtime"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -38,7 +39,6 @@ import (
 	"github.com/minio/minio/internal/mountinfo"
 	"github.com/minio/pkg/v3/env"
 	xnet "github.com/minio/pkg/v3/net"
-	"golang.org/x/exp/slices"
 )
 
 // EndpointType - enum for endpoint type.

cmd/erasure-healing-common.go

@@ -277,23 +277,21 @@ func partNeedsHealing(partErrs []int) bool {
 	return slices.IndexFunc(partErrs, func(i int) bool { return i != checkPartSuccess && i != checkPartUnknown }) > -1
 }
 
-func hasPartErr(partErrs []int) bool {
-	return slices.IndexFunc(partErrs, func(i int) bool { return i != checkPartSuccess }) > -1
+func countPartNotSuccess(partErrs []int) (c int) {
+	for _, pe := range partErrs {
+		if pe != checkPartSuccess {
+			c++
+		}
+	}
+	return
 }
 
-// disksWithAllParts - This function needs to be called with
-// []StorageAPI returned by listOnlineDisks. Returns,
-//
-// - disks which have all parts specified in the latest xl.meta.
-//
-//   - slice of errors about the state of data files on disk - can have
-//     a not-found error or a hash-mismatch error.
-func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetadata []FileInfo,
+// checkObjectWithAllParts sets partsMetadata and onlineDisks when xl.meta is inexistant/corrupted or outdated
+// it also checks if the status of each part (corrupted, missing, ok) in each drive
+func checkObjectWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetadata []FileInfo,
 	errs []error, latestMeta FileInfo, filterByETag bool, bucket, object string,
 	scanMode madmin.HealScanMode,
-) (availableDisks []StorageAPI, dataErrsByDisk map[int][]int, dataErrsByPart map[int][]int) {
-	availableDisks = make([]StorageAPI, len(onlineDisks))
-
+) (dataErrsByDisk map[int][]int, dataErrsByPart map[int][]int) {
 	dataErrsByDisk = make(map[int][]int, len(onlineDisks))
 	for i := range onlineDisks {
 		dataErrsByDisk[i] = make([]int, len(latestMeta.Parts))
@@ -334,12 +332,12 @@ func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetad
 
 	metaErrs := make([]error, len(errs))
 
-	for i, onlineDisk := range onlineDisks {
+	for i := range onlineDisks {
 		if errs[i] != nil {
 			metaErrs[i] = errs[i]
 			continue
 		}
-		if onlineDisk == OfflineDisk {
+		if onlineDisks[i] == OfflineDisk {
 			metaErrs[i] = errDiskNotFound
 			continue
 		}
@@ -355,6 +353,7 @@ func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetad
 		if corrupted {
 			metaErrs[i] = errFileCorrupt
 			partsMetadata[i] = FileInfo{}
+			onlineDisks[i] = nil
 			continue
 		}
 
@@ -362,6 +361,7 @@ func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetad
 			if !meta.IsValid() {
 				partsMetadata[i] = FileInfo{}
 				metaErrs[i] = errFileCorrupt
+				onlineDisks[i] = nil
 				continue
 			}
 
@@ -372,6 +372,7 @@ func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetad
 					// might have the right erasure distribution.
 					partsMetadata[i] = FileInfo{}
 					metaErrs[i] = errFileCorrupt
+					onlineDisks[i] = nil
 					continue
 				}
 			}
@@ -392,8 +393,8 @@ func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetad
 		if metaErrs[i] != nil {
 			continue
 		}
-		meta := partsMetadata[i]
 
+		meta := partsMetadata[i]
 		if meta.Deleted || meta.IsRemote() {
 			continue
 		}
@@ -440,16 +441,5 @@ func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetad
 			dataErrsByDisk[disk][part] = dataErrsByPart[part][disk]
 		}
 	}
-
-	for i, onlineDisk := range onlineDisks {
-		if metaErrs[i] == nil && !hasPartErr(dataErrsByDisk[i]) {
-			// All parts verified, mark it as all data available.
-			availableDisks[i] = onlineDisk
-		} else {
-			// upon errors just make that disk's fileinfo invalid
-			partsMetadata[i] = FileInfo{}
-		}
-	}
-
 	return
 }

cmd/erasure-healing-common_test.go

@@ -313,11 +313,11 @@ func TestListOnlineDisks(t *testing.T) {
 				t.Fatalf("Expected modTime to be equal to %v but was found to be %v",
 					test.expectedTime, modTime)
 			}
-			availableDisks, _, _ := disksWithAllParts(ctx, onlineDisks, partsMetadata,
+			_, _ = checkObjectWithAllParts(ctx, onlineDisks, partsMetadata,
 				test.errs, fi, false, bucket, object, madmin.HealDeepScan)
 
 			if test._tamperBackend != noTamper {
-				if tamperedIndex != -1 && availableDisks[tamperedIndex] != nil {
+				if tamperedIndex != -1 && onlineDisks[tamperedIndex] != nil {
 					t.Fatalf("Drive (%v) with part.1 missing is not a drive with available data",
 						erasureDisks[tamperedIndex])
 				}
@@ -495,11 +495,11 @@ func TestListOnlineDisksSmallObjects(t *testing.T) {
 					test.expectedTime, modTime)
 			}
 
-			availableDisks, _, _ := disksWithAllParts(ctx, onlineDisks, partsMetadata,
+			_, _ = checkObjectWithAllParts(ctx, onlineDisks, partsMetadata,
 				test.errs, fi, false, bucket, object, madmin.HealDeepScan)
 
 			if test._tamperBackend != noTamper {
-				if tamperedIndex != -1 && availableDisks[tamperedIndex] != nil {
+				if tamperedIndex != -1 && onlineDisks[tamperedIndex] != nil {
 					t.Fatalf("Drive (%v) with part.1 missing is not a drive with available data",
 						erasureDisks[tamperedIndex])
 				}
@@ -545,6 +545,7 @@ func TestDisksWithAllParts(t *testing.T) {
 
 	// Test 1: Test that all disks are returned without any failures with
 	// unmodified meta data
+	erasureDisks = s.getDisks()
 	partsMetadata, errs := readAllFileInfo(ctx, erasureDisks, "", bucket, object, "", false, true)
 	if err != nil {
 		t.Fatalf("Failed to read xl meta data %v", err)
@@ -557,14 +558,10 @@ func TestDisksWithAllParts(t *testing.T) {
 
 	erasureDisks, _, _ = listOnlineDisks(erasureDisks, partsMetadata, errs, readQuorum)
 
-	filteredDisks, _, dataErrsPerDisk := disksWithAllParts(ctx, erasureDisks, partsMetadata,
+	dataErrsPerDisk, _ := checkObjectWithAllParts(ctx, erasureDisks, partsMetadata,
 		errs, fi, false, bucket, object, madmin.HealDeepScan)
 
-	if len(filteredDisks) != len(erasureDisks) {
-		t.Errorf("Unexpected number of drives: %d", len(filteredDisks))
-	}
-
-	for diskIndex, disk := range filteredDisks {
+	for diskIndex, disk := range erasureDisks {
 		if partNeedsHealing(dataErrsPerDisk[diskIndex]) {
 			t.Errorf("Unexpected error: %v", dataErrsPerDisk[diskIndex])
 		}
@@ -575,17 +572,15 @@ func TestDisksWithAllParts(t *testing.T) {
 	}
 
 	// Test 2: Not synchronized modtime
+	erasureDisks = s.getDisks()
 	partsMetadataBackup := partsMetadata[0]
 	partsMetadata[0].ModTime = partsMetadata[0].ModTime.Add(-1 * time.Hour)
 
 	errs = make([]error, len(erasureDisks))
-	filteredDisks, _, _ = disksWithAllParts(ctx, erasureDisks, partsMetadata,
+	_, _ = checkObjectWithAllParts(ctx, erasureDisks, partsMetadata,
 		errs, fi, false, bucket, object, madmin.HealDeepScan)
 
-	if len(filteredDisks) != len(erasureDisks) {
-		t.Errorf("Unexpected number of drives: %d", len(filteredDisks))
-	}
-	for diskIndex, disk := range filteredDisks {
+	for diskIndex, disk := range erasureDisks {
 		if diskIndex == 0 && disk != nil {
 			t.Errorf("Drive not filtered as expected, drive: %d", diskIndex)
 		}
@@ -596,17 +591,15 @@ func TestDisksWithAllParts(t *testing.T) {
 	partsMetadata[0] = partsMetadataBackup // Revert before going to the next test
 
 	// Test 3: Not synchronized DataDir
+	erasureDisks = s.getDisks()
 	partsMetadataBackup = partsMetadata[1]
 	partsMetadata[1].DataDir = "foo-random"
 
 	errs = make([]error, len(erasureDisks))
-	filteredDisks, _, _ = disksWithAllParts(ctx, erasureDisks, partsMetadata,
+	_, _ = checkObjectWithAllParts(ctx, erasureDisks, partsMetadata,
 		errs, fi, false, bucket, object, madmin.HealDeepScan)
 
-	if len(filteredDisks) != len(erasureDisks) {
-		t.Errorf("Unexpected number of drives: %d", len(filteredDisks))
-	}
-	for diskIndex, disk := range filteredDisks {
+	for diskIndex, disk := range erasureDisks {
 		if diskIndex == 1 && disk != nil {
 			t.Errorf("Drive not filtered as expected, drive: %d", diskIndex)
 		}
@@ -617,6 +610,7 @@ func TestDisksWithAllParts(t *testing.T) {
 	partsMetadata[1] = partsMetadataBackup // Revert before going to the next test
 
 	// Test 4: key = disk index, value = part name with hash mismatch
+	erasureDisks = s.getDisks()
 	diskFailures := make(map[int]string)
 	diskFailures[0] = "part.1"
 	diskFailures[3] = "part.1"
@@ -637,29 +631,18 @@ func TestDisksWithAllParts(t *testing.T) {
 	}
 
 	errs = make([]error, len(erasureDisks))
-	filteredDisks, dataErrsPerDisk, _ = disksWithAllParts(ctx, erasureDisks, partsMetadata,
+	dataErrsPerDisk, _ = checkObjectWithAllParts(ctx, erasureDisks, partsMetadata,
 		errs, fi, false, bucket, object, madmin.HealDeepScan)
 
-	if len(filteredDisks) != len(erasureDisks) {
-		t.Errorf("Unexpected number of drives: %d", len(filteredDisks))
-	}
-
-	for diskIndex, disk := range filteredDisks {
+	for diskIndex := range erasureDisks {
 		if _, ok := diskFailures[diskIndex]; ok {
-			if disk != nil {
-				t.Errorf("Drive not filtered as expected, drive: %d", diskIndex)
-			}
 			if !partNeedsHealing(dataErrsPerDisk[diskIndex]) {
 				t.Errorf("Disk expected to be healed, driveIndex: %d", diskIndex)
 			}
 		} else {
-			if disk == nil {
-				t.Errorf("Drive erroneously filtered, driveIndex: %d", diskIndex)
-			}
 			if partNeedsHealing(dataErrsPerDisk[diskIndex]) {
 				t.Errorf("Disk not expected to be healed, driveIndex: %d", diskIndex)
 			}
-
 		}
 	}
 }

cmd/erasure-healing.go

@@ -32,7 +32,6 @@ import (
 	"github.com/minio/minio/internal/grid"
 	"github.com/minio/minio/internal/logger"
 	"github.com/minio/pkg/v3/sync/errgroup"
-	"golang.org/x/exp/slices"
 )
 
 //go:generate stringer -type=healingMetric -trimprefix=healingMetric $GOFILE
@@ -45,7 +44,8 @@ const (
 	healingMetricCheckAbandonedParts
 )
 
-func (er erasureObjects) listAndHeal(ctx context.Context, bucket, prefix string, scanMode madmin.HealScanMode, healEntry func(string, metaCacheEntry, madmin.HealScanMode) error) error {
+// List a prefix or a single object versions and heal
+func (er erasureObjects) listAndHeal(ctx context.Context, bucket, prefix string, recursive bool, scanMode madmin.HealScanMode, healEntry func(string, metaCacheEntry, madmin.HealScanMode) error) error {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -78,11 +78,14 @@ func (er erasureObjects) listAndHeal(ctx context.Context, bucket, prefix string,
 		bucket:         bucket,
 		path:           path,
 		filterPrefix:   filterPrefix,
-		recursive:      true,
+		recursive:      recursive,
 		forwardTo:      "",
 		minDisks:       1,
 		reportNotFound: false,
 		agreed: func(entry metaCacheEntry) {
+			if !recursive && prefix != entry.name {
+				return
+			}
 			if err := healEntry(bucket, entry, scanMode); err != nil {
 				cancel()
 			}
@@ -94,7 +97,9 @@ func (er erasureObjects) listAndHeal(ctx context.Context, bucket, prefix string,
 				// proceed to heal nonetheless.
 				entry, _ = entries.firstFound()
 			}
-
+			if !recursive && prefix != entry.name {
+				return
+			}
 			if err := healEntry(bucket, *entry, scanMode); err != nil {
 				cancel()
 				return
@@ -149,37 +154,40 @@ var errLegacyXLMeta = errors.New("legacy XL meta")
 
 var errOutdatedXLMeta = errors.New("outdated XL meta")
 
-var errPartMissingOrCorrupt = errors.New("part missing or corrupt")
+var (
+	errPartCorrupt = errors.New("part corrupt")
+	errPartMissing = errors.New("part missing")
+)
 
 // Only heal on disks where we are sure that healing is needed. We can expand
 // this list as and when we figure out more errors can be added to this list safely.
-func shouldHealObjectOnDisk(erErr error, partsErrs []int, meta FileInfo, latestMeta FileInfo) (bool, error) {
+func shouldHealObjectOnDisk(erErr error, partsErrs []int, meta FileInfo, latestMeta FileInfo) (bool, bool, error) {
 	if errors.Is(erErr, errFileNotFound) || errors.Is(erErr, errFileVersionNotFound) || errors.Is(erErr, errFileCorrupt) {
-		return true, erErr
+		return true, true, erErr
 	}
 	if erErr == nil {
 		if meta.XLV1 {
 			// Legacy means heal always
 			// always check first.
-			return true, errLegacyXLMeta
+			return true, true, errLegacyXLMeta
 		}
 		if !latestMeta.Equals(meta) {
-			return true, errOutdatedXLMeta
+			return true, true, errOutdatedXLMeta
 		}
 		if !meta.Deleted && !meta.IsRemote() {
 			// If xl.meta was read fine but there may be problem with the part.N files.
 			for _, partErr := range partsErrs {
-				if slices.Contains([]int{
-					checkPartFileNotFound,
-					checkPartFileCorrupt,
-				}, partErr) {
-					return true, errPartMissingOrCorrupt
+				if partErr == checkPartFileNotFound {
+					return true, false, errPartMissing
+				}
+				if partErr == checkPartFileCorrupt {
+					return true, false, errPartCorrupt
 				}
 			}
 		}
-		return false, nil
+		return false, false, nil
 	}
-	return false, erErr
+	return false, false, erErr
 }
 
 const (
@@ -254,6 +262,21 @@ func (er *erasureObjects) auditHealObject(ctx context.Context, bucket, object, v
 	auditLogInternal(ctx, opts)
 }
 
+func objectErrToDriveState(reason error) string {
+	switch {
+	case reason == nil:
+		return madmin.DriveStateOk
+	case IsErr(reason, errDiskNotFound):
+		return madmin.DriveStateOffline
+	case IsErr(reason, errFileNotFound, errFileVersionNotFound, errVolumeNotFound, errPartMissing, errOutdatedXLMeta, errLegacyXLMeta):
+		return madmin.DriveStateMissing
+	case IsErr(reason, errFileCorrupt, errPartCorrupt):
+		return madmin.DriveStateCorrupt
+	default:
+		return fmt.Sprintf("%s (%s)", madmin.DriveStateUnknown, reason.Error())
+	}
+}
+
 // Heals an object by re-writing corrupt/missing erasure blocks.
 func (er *erasureObjects) healObject(ctx context.Context, bucket string, object string, versionID string, opts madmin.HealOpts) (result madmin.HealResultItem, err error) {
 	dryRun := opts.DryRun
@@ -340,16 +363,7 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
 	// No modtime quorum
 	filterDisksByETag := quorumETag != ""
 
-	// List of disks having all parts as per latest metadata.
-	// NOTE: do not pass in latestDisks to diskWithAllParts since
-	// the diskWithAllParts needs to reach the drive to ensure
-	// validity of the metadata content, we should make sure that
-	// we pass in disks as is for it to be verified. Once verified
-	// the disksWithAllParts() returns the actual disks that can be
-	// used here for reconstruction. This is done to ensure that
-	// we do not skip drives that have inconsistent metadata to be
-	// skipped from purging when they are stale.
-	availableDisks, dataErrsByDisk, dataErrsByPart := disksWithAllParts(ctx, onlineDisks, partsMetadata,
+	dataErrsByDisk, dataErrsByPart := checkObjectWithAllParts(ctx, onlineDisks, partsMetadata,
 		errs, latestMeta, filterDisksByETag, bucket, object, scanMode)
 
 	var erasure Erasure
@@ -371,26 +385,18 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
 	// data state and a list of outdated disks on which data needs
 	// to be healed.
 	outDatedDisks := make([]StorageAPI, len(storageDisks))
-	disksToHealCount := 0
-	for i := range availableDisks {
-		yes, reason := shouldHealObjectOnDisk(errs[i], dataErrsByDisk[i], partsMetadata[i], latestMeta)
+	disksToHealCount, xlMetaToHealCount := 0, 0
+	for i := range onlineDisks {
+		yes, isMeta, reason := shouldHealObjectOnDisk(errs[i], dataErrsByDisk[i], partsMetadata[i], latestMeta)
 		if yes {
 			outDatedDisks[i] = storageDisks[i]
 			disksToHealCount++
+			if isMeta {
+				xlMetaToHealCount++
+			}
 		}
 
-		driveState := ""
-		switch {
-		case reason == nil:
-			driveState = madmin.DriveStateOk
-		case IsErr(reason, errDiskNotFound):
-			driveState = madmin.DriveStateOffline
-		case IsErr(reason, errFileNotFound, errFileVersionNotFound, errVolumeNotFound, errPartMissingOrCorrupt, errOutdatedXLMeta, errLegacyXLMeta):
-			driveState = madmin.DriveStateMissing
-		default:
-			// all remaining cases imply corrupt data/metadata
-			driveState = madmin.DriveStateCorrupt
-		}
+		driveState := objectErrToDriveState(reason)
 
 		result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
 			UUID:     "",
@@ -404,16 +410,6 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
 		})
 	}
 
-	if isAllNotFound(errs) {
-		// File is fully gone, fileInfo is empty.
-		err := errFileNotFound
-		if versionID != "" {
-			err = errFileVersionNotFound
-		}
-		return er.defaultHealResult(FileInfo{}, storageDisks, storageEndpoints, errs,
-			bucket, object, versionID), err
-	}
-
 	if disksToHealCount == 0 {
 		// Nothing to heal!
 		return result, nil
@@ -425,13 +421,23 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
 		return result, nil
 	}
 
-	cannotHeal := !latestMeta.XLV1 && !latestMeta.Deleted && disksToHealCount > latestMeta.Erasure.ParityBlocks
+	cannotHeal := !latestMeta.XLV1 && !latestMeta.Deleted && xlMetaToHealCount > latestMeta.Erasure.ParityBlocks
 	if cannotHeal && quorumETag != "" {
 		// This is an object that is supposed to be removed by the dangling code
 		// but we noticed that ETag is the same for all objects, let's give it a shot
 		cannotHeal = false
 	}
 
+	if !latestMeta.Deleted && !latestMeta.IsRemote() {
+		// check if there is a part that lost its quorum
+		for _, partErrs := range dataErrsByPart {
+			if countPartNotSuccess(partErrs) > latestMeta.Erasure.ParityBlocks {
+				cannotHeal = true
+				break
+			}
+		}
+	}
+
 	if cannotHeal {
 		// Allow for dangling deletes, on versions that have DataDir missing etc.
 		// this would end up restoring the correct readable versions.
@@ -470,16 +476,15 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
 	tmpID := mustGetUUID()
 	migrateDataDir := mustGetUUID()
 
-	// Reorder so that we have data disks first and parity disks next.
-	if !latestMeta.Deleted && len(latestMeta.Erasure.Distribution) != len(availableDisks) {
-		err := fmt.Errorf("unexpected file distribution (%v) from available disks (%v), looks like backend disks have been manually modified refusing to heal %s/%s(%s)",
-			latestMeta.Erasure.Distribution, availableDisks, bucket, object, versionID)
-		healingLogOnceIf(ctx, err, "heal-object-available-disks")
+	if !latestMeta.Deleted && len(latestMeta.Erasure.Distribution) != len(onlineDisks) {
+		err := fmt.Errorf("unexpected file distribution (%v) from online disks (%v), looks like backend disks have been manually modified refusing to heal %s/%s(%s)",
+			latestMeta.Erasure.Distribution, onlineDisks, bucket, object, versionID)
+		healingLogOnceIf(ctx, err, "heal-object-online-disks")
 		return er.defaultHealResult(latestMeta, storageDisks, storageEndpoints, errs,
 			bucket, object, versionID), err
 	}
 
-	latestDisks := shuffleDisks(availableDisks, latestMeta.Erasure.Distribution)
+	latestDisks := shuffleDisks(onlineDisks, latestMeta.Erasure.Distribution)
 
 	if !latestMeta.Deleted && len(latestMeta.Erasure.Distribution) != len(outDatedDisks) {
 		err := fmt.Errorf("unexpected file distribution (%v) from outdated disks (%v), looks like backend disks have been manually modified refusing to heal %s/%s(%s)",
@@ -550,6 +555,10 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
 				if disk == OfflineDisk {
 					continue
 				}
+				thisPartErrs := shuffleCheckParts(dataErrsByPart[partIndex], latestMeta.Erasure.Distribution)
+				if thisPartErrs[i] != checkPartSuccess {
+					continue
+				}
 				checksumInfo := copyPartsMetadata[i].Erasure.GetChecksumInfo(partNumber)
 				partPath := pathJoin(object, srcDataDir, fmt.Sprintf("part.%d", partNumber))
 				readers[i] = newBitrotReader(disk, copyPartsMetadata[i].Data, bucket, partPath, tillOffset, checksumAlgo,
@@ -817,13 +826,7 @@ func (er *erasureObjects) defaultHealResult(lfi FileInfo, storageDisks []Storage
 			})
 			continue
 		}
-		driveState := madmin.DriveStateCorrupt
-		switch errs[index] {
-		case errFileNotFound, errVolumeNotFound:
-			driveState = madmin.DriveStateMissing
-		case nil:
-			driveState = madmin.DriveStateOk
-		}
+		driveState := objectErrToDriveState(errs[index])
 		result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
 			UUID:     "",
 			Endpoint: storageEndpoints[index].String(),

cmd/erasure-healing_test.go

@@ -733,7 +733,7 @@ func TestHealingDanglingObject(t *testing.T) {
 		t.Fatalf("Expected versions 1, got %d", fileInfoPreHeal.NumVersions)
 	}
 
-	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
+	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Recursive: true, Remove: true},
 		func(bucket, object, vid string, scanMode madmin.HealScanMode) error {
 			_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{ScanMode: scanMode, Remove: true})
 			return err
@@ -780,7 +780,7 @@ func TestHealingDanglingObject(t *testing.T) {
 		t.Fatalf("Expected versions 1, got %d", fileInfoPreHeal.NumVersions)
 	}
 
-	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
+	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Recursive: true, Remove: true},
 		func(bucket, object, vid string, scanMode madmin.HealScanMode) error {
 			_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{ScanMode: scanMode, Remove: true})
 			return err
@@ -829,7 +829,7 @@ func TestHealingDanglingObject(t *testing.T) {
 		t.Fatalf("Expected versions 3, got %d", fileInfoPreHeal.NumVersions)
 	}
 
-	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
+	if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Recursive: true, Remove: true},
 		func(bucket, object, vid string, scanMode madmin.HealScanMode) error {
 			_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{ScanMode: scanMode, Remove: true})
 			return err

cmd/erasure-metadata-utils.go

@@ -52,15 +52,15 @@ func reduceCommonVersions(diskVersions [][]byte, writeQuorum int) (versions []by
 	}
 
 	var commonVersions uint64
-	max := 0
+	maxCnt := 0
 	for versions, count := range diskVersionsCount {
-		if max < count {
-			max = count
+		if maxCnt < count {
+			maxCnt = count
 			commonVersions = versions
 		}
 	}
 
-	if max >= writeQuorum {
+	if maxCnt >= writeQuorum {
 		for _, versions := range diskVersions {
 			if binary.BigEndian.Uint64(versions) == commonVersions {
 				return versions
@@ -80,15 +80,15 @@ func reduceCommonDataDir(dataDirs []string, writeQuorum int) (dataDir string) {
 		dataDirsCount[ddir]++
 	}
 
-	max := 0
+	maxCnt := 0
 	for ddir, count := range dataDirsCount {
-		if max < count {
-			max = count
+		if maxCnt < count {
+			maxCnt = count
 			dataDir = ddir
 		}
 	}
 
-	if max >= writeQuorum {
+	if maxCnt >= writeQuorum {
 		return dataDir
 	}
 
@@ -115,20 +115,20 @@ func reduceErrs(errs []error, ignoredErrs []error) (maxCount int, maxErr error)
 		errorCounts[err]++
 	}
 
-	max := 0
+	maxCnt := 0
 	for err, count := range errorCounts {
 		switch {
-		case max < count:
-			max = count
+		case maxCnt < count:
+			maxCnt = count
 			maxErr = err
 
 		// Prefer `nil` over other error values with the same
 		// number of occurrences.
-		case max == count && err == nil:
+		case maxCnt == count && err == nil:
 			maxErr = err
 		}
 	}
-	return max, maxErr
+	return maxCnt, maxErr
 }
 
 // reduceQuorumErrs behaves like reduceErrs by only for returning
@@ -295,34 +295,34 @@ func shuffleDisksAndPartsMetadata(disks []StorageAPI, partsMetadata []FileInfo,
 	return shuffledDisks, shuffledPartsMetadata
 }
 
-// Return shuffled partsMetadata depending on distribution.
-func shufflePartsMetadata(partsMetadata []FileInfo, distribution []int) (shuffledPartsMetadata []FileInfo) {
+func shuffleWithDist[T any](input []T, distribution []int) []T {
 	if distribution == nil {
-		return partsMetadata
+		return input
 	}
-	shuffledPartsMetadata = make([]FileInfo, len(partsMetadata))
-	// Shuffle slice xl metadata for expected distribution.
-	for index := range partsMetadata {
+	shuffled := make([]T, len(input))
+	for index := range input {
 		blockIndex := distribution[index]
-		shuffledPartsMetadata[blockIndex-1] = partsMetadata[index]
+		shuffled[blockIndex-1] = input[index]
 	}
-	return shuffledPartsMetadata
+	return shuffled
+}
+
+// Return shuffled partsMetadata depending on distribution.
+func shufflePartsMetadata(partsMetadata []FileInfo, distribution []int) []FileInfo {
+	return shuffleWithDist[FileInfo](partsMetadata, distribution)
+}
+
+// shuffleCheckParts - shuffle CheckParts slice depending on the
+// erasure distribution.
+func shuffleCheckParts(parts []int, distribution []int) []int {
+	return shuffleWithDist[int](parts, distribution)
 }
 
 // shuffleDisks - shuffle input disks slice depending on the
 // erasure distribution. Return shuffled slice of disks with
 // their expected distribution.
-func shuffleDisks(disks []StorageAPI, distribution []int) (shuffledDisks []StorageAPI) {
-	if distribution == nil {
-		return disks
-	}
-	shuffledDisks = make([]StorageAPI, len(disks))
-	// Shuffle disks for expected distribution.
-	for index := range disks {
-		blockIndex := distribution[index]
-		shuffledDisks[blockIndex-1] = disks[index]
-	}
-	return shuffledDisks
+func shuffleDisks(disks []StorageAPI, distribution []int) []StorageAPI {
+	return shuffleWithDist[StorageAPI](disks, distribution)
 }
 
 // evalDisks - returns a new slice of disks where nil is set if

cmd/erasure-metadata.go

@@ -514,8 +514,10 @@ func listObjectParities(partsMetadata []FileInfo, errs []error) (parities []int)
 		if metadata.Deleted || metadata.Size == 0 {
 			parities[index] = totalShards / 2
 		} else if metadata.TransitionStatus == lifecycle.TransitionComplete {
-			// For tiered objects, read quorum is N/2+1 to ensure simple majority on xl.meta. It is not equal to EcM because the data integrity is entrusted with the warm tier.
-			parities[index] = totalShards - (totalShards/2 + 1)
+			// For tiered objects, read quorum is N/2+1 to ensure simple majority on xl.meta.
+			// It is not equal to EcM because the data integrity is entrusted with the warm tier.
+			// However, we never go below EcM, in case of a EcM=EcN setup.
+			parities[index] = max(totalShards-(totalShards/2+1), metadata.Erasure.ParityBlocks)
 		} else {
 			parities[index] = metadata.Erasure.ParityBlocks
 		}

cmd/erasure-multipart.go

@@ -626,17 +626,13 @@ func (er erasureObjects) PutObjectPart(ctx context.Context, bucket, object, uplo
 	switch size := data.Size(); {
 	case size == 0:
 		buffer = make([]byte, 1) // Allocate at least a byte to reach EOF
-	case size == -1:
-		if size := data.ActualSize(); size > 0 && size < fi.Erasure.BlockSize {
-			// Account for padding and forced compression overhead and encryption.
-			buffer = make([]byte, data.ActualSize()+256+32+32, data.ActualSize()*2+512)
+	case size >= fi.Erasure.BlockSize || size == -1:
+		if int64(globalBytePoolCap.Load().Width()) < fi.Erasure.BlockSize {
+			buffer = make([]byte, fi.Erasure.BlockSize, 2*fi.Erasure.BlockSize)
 		} else {
 			buffer = globalBytePoolCap.Load().Get()
 			defer globalBytePoolCap.Load().Put(buffer)
 		}
-	case size >= fi.Erasure.BlockSize:
-		buffer = globalBytePoolCap.Load().Get()
-		defer globalBytePoolCap.Load().Put(buffer)
 	case size < fi.Erasure.BlockSize:
 		// No need to allocate fully fi.Erasure.BlockSize buffer if the incoming data is smaller.
 		buffer = make([]byte, size, 2*size+int64(fi.Erasure.ParityBlocks+fi.Erasure.DataBlocks-1))
@@ -744,6 +740,15 @@ func (er erasureObjects) PutObjectPart(ctx context.Context, bucket, object, uplo
 	ctx = plkctx.Context()
 	defer partIDLock.Unlock(plkctx)
 
+	// Read lock for upload id, only held while reading the upload metadata.
+	uploadIDRLock := er.NewNSLock(bucket, pathJoin(object, uploadID))
+	rlkctx, err := uploadIDRLock.GetRLock(ctx, globalOperationTimeout)
+	if err != nil {
+		return PartInfo{}, err
+	}
+	ctx = rlkctx.Context()
+	defer uploadIDRLock.RUnlock(rlkctx)
+
 	onlineDisks, err = er.renamePart(ctx, onlineDisks, minioMetaTmpBucket, tmpPartPath, minioMetaMultipartBucket, partPath, partFI, writeQuorum)
 	if err != nil {
 		if errors.Is(err, errFileNotFound) {

cmd/erasure-object.go

@@ -2365,6 +2365,7 @@ func (er erasureObjects) TransitionObject(ctx context.Context, bucket, object st
 
 	destObj, err := genTransitionObjName(bucket)
 	if err != nil {
+		traceFn(ILMTransition, nil, err)
 		return err
 	}
 
@@ -2375,9 +2376,14 @@ func (er erasureObjects) TransitionObject(ctx context.Context, bucket, object st
 	}()
 
 	var rv remoteVersionID
-	rv, err = tgtClient.Put(ctx, destObj, pr, fi.Size)
+	rv, err = tgtClient.PutWithMeta(ctx, destObj, pr, fi.Size, map[string]string{
+		"name": object, // preserve the original name of the object on the remote tier object metadata.
+		// this is just for future reverse lookup() purposes (applies only for new objects)
+		// does not apply retro-actively on already transitioned objects.
+	})
 	pr.CloseWithError(err)
 	if err != nil {
+		traceFn(ILMTransition, nil, err)
 		return err
 	}
 	fi.TransitionStatus = lifecycle.TransitionComplete

cmd/erasure-server-pool-decom.go

@@ -845,7 +845,7 @@ func (z *erasureServerPools) decommissionPool(ctx context.Context, idx int, pool
 				// to decommission, just skip it, this also includes
 				// any other versions that have already expired.
 				remainingVersions := len(fivs.Versions) - expired
-				if version.Deleted && remainingVersions == 1 {
+				if version.Deleted && remainingVersions == 1 && rcfg == nil {
 					decommissioned++
 					stopFn(version.Size, errors.New("DELETE marked object with no other non-current versions will be skipped"))
 					continue

cmd/erasure-server-pool.go

@@ -256,7 +256,7 @@ func (z *erasureServerPools) NewNSLock(bucket string, objects ...string) RWLocke
 
 // GetDisksID will return disks by their ID.
 func (z *erasureServerPools) GetDisksID(ids ...string) []StorageAPI {
-	idMap := make(map[string]struct{})
+	idMap := make(map[string]struct{}, len(ids))
 	for _, id := range ids {
 		idMap[id] = struct{}{}
 	}
@@ -357,7 +357,7 @@ func (p serverPoolsAvailableSpace) TotalAvailable() uint64 {
 
 // FilterMaxUsed will filter out any pools that has used percent bigger than max,
 // unless all have that, in which case all are preserved.
-func (p serverPoolsAvailableSpace) FilterMaxUsed(max int) {
+func (p serverPoolsAvailableSpace) FilterMaxUsed(maxUsed int) {
 	// We aren't modifying p, only entries in it, so we don't need to receive a pointer.
 	if len(p) <= 1 {
 		// Nothing to do.
@@ -365,7 +365,7 @@ func (p serverPoolsAvailableSpace) FilterMaxUsed(max int) {
 	}
 	var ok bool
 	for _, z := range p {
-		if z.Available > 0 && z.MaxUsedPct < max {
+		if z.Available > 0 && z.MaxUsedPct < maxUsed {
 			ok = true
 			break
 		}
@@ -378,7 +378,7 @@ func (p serverPoolsAvailableSpace) FilterMaxUsed(max int) {
 
 	// Remove entries that are above.
 	for i, z := range p {
-		if z.Available > 0 && z.MaxUsedPct < max {
+		if z.Available > 0 && z.MaxUsedPct < maxUsed {
 			continue
 		}
 		p[i].Available = 0
@@ -1858,16 +1858,6 @@ func (z *erasureServerPools) PutObjectPart(ctx context.Context, bucket, object,
 		return PartInfo{}, err
 	}
 
-	// Read lock for upload id.
-	// Only held while reading the upload metadata.
-	uploadIDRLock := z.NewNSLock(bucket, pathJoin(object, uploadID))
-	rlkctx, err := uploadIDRLock.GetRLock(ctx, globalOperationTimeout)
-	if err != nil {
-		return PartInfo{}, err
-	}
-	ctx = rlkctx.Context()
-	defer uploadIDRLock.RUnlock(rlkctx)
-
 	if z.SinglePool() {
 		return z.serverPools[0].PutObjectPart(ctx, bucket, object, uploadID, partID, data, opts)
 	}
@@ -2478,6 +2468,7 @@ func (z *erasureServerPools) Walk(ctx context.Context, bucket, prefix string, re
 // HealObjectFn closure function heals the object.
 type HealObjectFn func(bucket, object, versionID string, scanMode madmin.HealScanMode) error
 
+// List a prefix or a single object versions and heal
 func (z *erasureServerPools) HealObjects(ctx context.Context, bucket, prefix string, opts madmin.HealOpts, healObjectFn HealObjectFn) error {
 	healEntry := func(bucket string, entry metaCacheEntry, scanMode madmin.HealScanMode) error {
 		if entry.isDir() {
@@ -2541,7 +2532,7 @@ func (z *erasureServerPools) HealObjects(ctx context.Context, bucket, prefix str
 			go func(idx int, set *erasureObjects) {
 				defer wg.Done()
 
-				errs[idx] = set.listAndHeal(ctx, bucket, prefix, opts.ScanMode, healEntry)
+				errs[idx] = set.listAndHeal(ctx, bucket, prefix, opts.Recursive, opts.ScanMode, healEntry)
 			}(idx, set)
 		}
 		wg.Wait()
@@ -2593,15 +2584,22 @@ func (z *erasureServerPools) HealObject(ctx context.Context, bucket, object, ver
 		}
 	}
 
+	hr := madmin.HealResultItem{
+		Type:      madmin.HealItemObject,
+		Bucket:    bucket,
+		Object:    object,
+		VersionID: versionID,
+	}
+
 	// At this stage, all errors are 'not found'
 	if versionID != "" {
-		return madmin.HealResultItem{}, VersionNotFound{
+		return hr, VersionNotFound{
 			Bucket:    bucket,
 			Object:    object,
 			VersionID: versionID,
 		}
 	}
-	return madmin.HealResultItem{}, ObjectNotFound{
+	return hr, ObjectNotFound{
 		Bucket: bucket,
 		Object: object,
 	}

cmd/ftp-server-driver.go

@@ -24,6 +24,8 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"net"
+	"net/http"
 	"os"
 	"path"
 	"strings"
@@ -286,6 +288,10 @@ func (driver *ftpDriver) CheckPasswd(c *ftp.Context, username, password string)
 }
 
 func (driver *ftpDriver) getMinIOClient(ctx *ftp.Context) (*minio.Client, error) {
+	tr := http.RoundTripper(globalRemoteFTPClientTransport)
+	if host, _, err := net.SplitHostPort(ctx.Sess.RemoteAddr().String()); err == nil {
+		tr = forwardForTransport{tr: tr, fwd: host}
+	}
 	ui, ok := globalIAMSys.GetUser(context.Background(), ctx.Sess.LoginUser())
 	if !ok && !globalIAMSys.LDAPConfig.Enabled() {
 		return nil, errNoSuchUser
@@ -363,7 +369,7 @@ func (driver *ftpDriver) getMinIOClient(ctx *ftp.Context) (*minio.Client, error)
 		return minio.New(driver.endpoint, &minio.Options{
 			Creds:     mcreds,
 			Secure:    globalIsTLS,
-			Transport: globalRemoteFTPClientTransport,
+			Transport: tr,
 		})
 	}
 
@@ -377,7 +383,7 @@ func (driver *ftpDriver) getMinIOClient(ctx *ftp.Context) (*minio.Client, error)
 	return minio.New(driver.endpoint, &minio.Options{
 		Creds:     credentials.NewStaticV4(ui.Credentials.AccessKey, ui.Credentials.SecretKey, ""),
 		Secure:    globalIsTLS,
-		Transport: globalRemoteFTPClientTransport,
+		Transport: tr,
 	})
 }
 

cmd/generic-handlers.go

@@ -33,8 +33,6 @@ import (
 	"github.com/minio/minio-go/v7/pkg/set"
 	"github.com/minio/minio/internal/grid"
 	xnet "github.com/minio/pkg/v3/net"
-	"golang.org/x/exp/maps"
-	"golang.org/x/exp/slices"
 
 	"github.com/minio/minio/internal/amztime"
 	"github.com/minio/minio/internal/config/dns"
@@ -75,7 +73,7 @@ const (
 // and must not set by clients
 func containsReservedMetadata(header http.Header) bool {
 	for key := range header {
-		if slices.Contains(maps.Keys(validSSEReplicationHeaders), key) {
+		if _, ok := validSSEReplicationHeaders[key]; ok {
 			return false
 		}
 		if stringsHasPrefixFold(key, ReservedMetadataPrefix) {

cmd/global-heal.go

@@ -459,8 +459,6 @@ func (er *erasureObjects) healErasureSet(ctx context.Context, buckets []string,
 					continue
 				}
 
-				var versionHealed bool
-
 				res, err := er.HealObject(ctx, bucket, encodedEntryName,
 					version.VersionID, madmin.HealOpts{
 						ScanMode: scanMode,
@@ -475,21 +473,23 @@ func (er *erasureObjects) healErasureSet(ctx context.Context, buckets []string,
 					}
 				} else {
 					// Look for the healing results
-					if res.After.Drives[tracker.DiskIndex].State == madmin.DriveStateOk {
-						versionHealed = true
+					if res.After.Drives[tracker.DiskIndex].State != madmin.DriveStateOk {
+						err = fmt.Errorf("unexpected after heal state: %s", res.After.Drives[tracker.DiskIndex].State)
 					}
 				}
 
-				if versionHealed {
+				if err == nil {
 					bgSeq.countHealed(madmin.HealItemObject)
 					result = healEntrySuccess(uint64(version.Size))
 				} else {
 					bgSeq.countFailed(madmin.HealItemObject)
 					result = healEntryFailure(uint64(version.Size))
 					if version.VersionID != "" {
-						healingLogIf(ctx, fmt.Errorf("unable to heal object %s/%s-v(%s): %w", bucket, version.Name, version.VersionID, err))
+						healingLogIf(ctx, fmt.Errorf("unable to heal object %s/%s (version-id=%s): %w",
+							bucket, version.Name, version.VersionID, err))
 					} else {
-						healingLogIf(ctx, fmt.Errorf("unable to heal object %s/%s: %w", bucket, version.Name, err))
+						healingLogIf(ctx, fmt.Errorf("unable to heal object %s/%s: %w",
+							bucket, version.Name, err))
 					}
 				}
 

cmd/iam-object-store.go

@@ -793,7 +793,10 @@ func (iamOS *IAMObjectStore) loadAllFromObjStore(ctx context.Context, cache *iam
 	for _, item := range listedConfigItems[stsListKey] {
 		userName := path.Dir(item)
 		// loadUser() will delete expired user during the load.
-		iamLogIf(ctx, iamOS.loadUser(ctx, userName, stsUser, stsAccountsFromStore))
+		err := iamOS.loadUser(ctx, userName, stsUser, stsAccountsFromStore)
+		if err != nil && !errors.Is(err, errNoSuchUser) {
+			iamLogIf(ctx, err)
+		}
 		// No need to return errors for failed expiration of STS users
 	}
 
@@ -801,7 +804,10 @@ func (iamOS *IAMObjectStore) loadAllFromObjStore(ctx context.Context, cache *iam
 	// (removed during loadUser() in the loop above) are removed from memory.
 	for _, item := range listedConfigItems[policyDBSTSUsersListKey] {
 		stsName := strings.TrimSuffix(item, ".json")
-		iamLogIf(ctx, iamOS.loadMappedPolicy(ctx, stsName, stsUser, false, stsAccPoliciesFromStore))
+		err := iamOS.loadMappedPolicy(ctx, stsName, stsUser, false, stsAccPoliciesFromStore)
+		if err != nil && !errors.Is(err, errNoSuchPolicy) {
+			iamLogIf(ctx, err)
+		}
 		// No need to return errors for failed expiration of STS users
 	}
 

cmd/iam-store.go

@@ -26,6 +26,7 @@ import (
 	"path"
 	"sort"
 	"strings"
+	"sync"
 	"time"
 
 	jsoniter "github.com/json-iterator/go"
@@ -37,6 +38,7 @@ import (
 	"github.com/minio/minio/internal/jwt"
 	"github.com/minio/pkg/v3/env"
 	"github.com/minio/pkg/v3/policy"
+	"github.com/minio/pkg/v3/sync/errgroup"
 	"github.com/puzpuzpuz/xsync/v3"
 	"golang.org/x/sync/singleflight"
 )
@@ -357,6 +359,68 @@ func (c *iamCache) removeGroupFromMembershipsMap(group string) {
 	}
 }
 
+func (c *iamCache) policyDBGetGroups(store *IAMStoreSys, userPolicyPresent bool, groups ...string) ([]string, error) {
+	var policies []string
+	for _, group := range groups {
+		if store.getUsersSysType() == MinIOUsersSysType {
+			g, ok := c.iamGroupsMap[group]
+			if !ok {
+				continue
+			}
+
+			// Group is disabled, so we return no policy - this
+			// ensures the request is denied.
+			if g.Status == statusDisabled {
+				continue
+			}
+		}
+
+		policy, ok := c.iamGroupPolicyMap.Load(group)
+		if !ok {
+			continue
+		}
+
+		policies = append(policies, policy.toSlice()...)
+	}
+
+	found := len(policies) > 0
+	if found {
+		return policies, nil
+	}
+
+	if userPolicyPresent {
+		// if user mapping present and no group policies found
+		// rely on user policy for access, instead of fallback.
+		return nil, nil
+	}
+
+	var mu sync.Mutex
+
+	// no mappings found, fallback for all groups.
+	g := errgroup.WithNErrs(len(groups)).WithConcurrency(10) // load like 10 groups at a time.
+
+	for index := range groups {
+		index := index
+		g.Go(func() error {
+			err := store.loadMappedPolicy(context.TODO(), groups[index], regUser, true, c.iamGroupPolicyMap)
+			if err != nil && !errors.Is(err, errNoSuchPolicy) {
+				return err
+			}
+			if errors.Is(err, errNoSuchPolicy) {
+				return nil
+			}
+			policy, _ := c.iamGroupPolicyMap.Load(groups[index])
+			mu.Lock()
+			policies = append(policies, policy.toSlice()...)
+			mu.Unlock()
+			return nil
+		}, index)
+	}
+
+	err := errors.Join(g.Wait()...)
+	return policies, err
+}
+
 // policyDBGet - lower-level helper; does not take locks.
 //
 // If a group is passed, it returns policies associated with the group.
@@ -676,7 +740,8 @@ func (store *IAMStoreSys) LoadIAMCache(ctx context.Context, firstTime bool) erro
 type IAMStoreSys struct {
 	IAMStorageAPI
 
-	group *singleflight.Group
+	group  *singleflight.Group
+	policy *singleflight.Group
 }
 
 // HasWatcher - returns if the storage system has a watcher.
@@ -757,21 +822,32 @@ func (store *IAMStoreSys) PolicyDBGet(name string, groups ...string) ([]string,
 	cache := store.rlock()
 	defer store.runlock()
 
-	policies, _, err := cache.policyDBGet(store, name, false, false)
-	if err != nil {
-		return nil, err
-	}
-
-	userPolicyPresent := len(policies) > 0
-	for _, group := range groups {
-		ps, _, err := cache.policyDBGet(store, group, true, userPolicyPresent)
+	getPolicies := func() ([]string, error) {
+		policies, _, err := cache.policyDBGet(store, name, false, false)
 		if err != nil {
 			return nil, err
 		}
-		policies = append(policies, ps...)
-	}
 
-	return policies, nil
+		userPolicyPresent := len(policies) > 0
+
+		groupPolicies, err := cache.policyDBGetGroups(store, userPolicyPresent, groups...)
+		if err != nil {
+			return nil, err
+		}
+
+		policies = append(policies, groupPolicies...)
+		return policies, nil
+	}
+	if store.policy != nil {
+		val, err, _ := store.policy.Do(name, func() (interface{}, error) {
+			return getPolicies()
+		})
+		if err != nil {
+			return nil, err
+		}
+		return val.([]string), nil
+	}
+	return getPolicies()
 }
 
 // AddUsersToGroup - adds users to group, creating the group if needed.
@@ -2009,7 +2085,8 @@ type ParentUserInfo struct {
 // GetAllParentUsers - returns all distinct "parent-users" associated with STS
 // or service credentials, mapped to all distinct roleARNs associated with the
 // parent user. The dummy role ARN is associated with parent users from
-// policy-claim based OpenID providers.
+// policy-claim based OpenID providers. The root credential as a parent
+// user is not included in the result.
 func (store *IAMStoreSys) GetAllParentUsers() map[string]ParentUserInfo {
 	cache := store.rlock()
 	defer store.runlock()
@@ -2048,7 +2125,7 @@ func (store *IAMStoreSys) getParentUsers(cache *iamCache) map[string]ParentUserI
 		if err != nil {
 			continue
 		}
-		if cred.ParentUser == "" {
+		if cred.ParentUser == "" || cred.ParentUser == globalActiveCred.AccessKey {
 			continue
 		}
 

cmd/iam.go

@@ -178,13 +178,18 @@ func (sys *IAMSys) initStore(objAPI ObjectLayer, etcdClient *etcd.Client) {
 	}
 
 	if etcdClient == nil {
-		var group *singleflight.Group
+		var (
+			group  *singleflight.Group
+			policy *singleflight.Group
+		)
 		if env.Get("_MINIO_IAM_SINGLE_FLIGHT", config.EnableOn) == config.EnableOn {
 			group = &singleflight.Group{}
+			policy = &singleflight.Group{}
 		}
 		sys.store = &IAMStoreSys{
 			IAMStorageAPI: newIAMObjectStore(objAPI, sys.usersSysType),
 			group:         group,
+			policy:        policy,
 		}
 	} else {
 		sys.store = &IAMStoreSys{IAMStorageAPI: newIAMEtcdStore(etcdClient, sys.usersSysType)}
@@ -406,6 +411,7 @@ func (sys *IAMSys) periodicRoutines(ctx context.Context, baseInterval time.Durat
 	timer := time.NewTimer(waitInterval())
 	defer timer.Stop()
 
+	lastPurgeHour := -1
 	for {
 		select {
 		case <-timer.C:
@@ -421,9 +427,9 @@ func (sys *IAMSys) periodicRoutines(ctx context.Context, baseInterval time.Durat
 				}
 			}
 
-			// The following actions are performed about once in 4 times that
-			// IAM is refreshed:
-			if r.Intn(4) == 0 {
+			// Run purge routines once in each hour.
+			if refreshStart.Hour() != lastPurgeHour {
+				lastPurgeHour = refreshStart.Hour()
 				// Poll and remove accounts for those users who were removed
 				// from LDAP/OpenID.
 				if sys.LDAPConfig.Enabled() {

cmd/metacache-set.go

@@ -29,6 +29,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	jsoniter "github.com/json-iterator/go"
@@ -182,8 +183,7 @@ func (o *listPathOptions) gatherResults(ctx context.Context, in <-chan metaCache
 	resultsDone := make(chan metaCacheEntriesSorted)
 	// Copy so we can mutate
 	resCh := resultsDone
-	var done bool
-	var mu sync.Mutex
+	var done atomic.Bool
 	resErr := io.EOF
 
 	go func() {
@@ -194,9 +194,7 @@ func (o *listPathOptions) gatherResults(ctx context.Context, in <-chan metaCache
 				// past limit
 				continue
 			}
-			mu.Lock()
-			returned = done
-			mu.Unlock()
+			returned = done.Load()
 			if returned {
 				resCh = nil
 				continue
@@ -250,9 +248,7 @@ func (o *listPathOptions) gatherResults(ctx context.Context, in <-chan metaCache
 	return func() (metaCacheEntriesSorted, error) {
 		select {
 		case <-ctx.Done():
-			mu.Lock()
-			done = true
-			mu.Unlock()
+			done.Store(true)
 			return metaCacheEntriesSorted{}, ctx.Err()
 		case r := <-resultsDone:
 			return r, resErr
@@ -626,18 +622,18 @@ func calcCommonWritesDeletes(infos []DiskInfo, readQuorum int) (commonWrite, com
 	}
 
 	filter := func(list []uint64) (commonCount uint64) {
-		max := 0
+		maxCnt := 0
 		signatureMap := map[uint64]int{}
 		for _, v := range list {
 			signatureMap[v]++
 		}
 		for ops, count := range signatureMap {
-			if max < count && commonCount < ops {
-				max = count
+			if maxCnt < count && commonCount < ops {
+				maxCnt = count
 				commonCount = ops
 			}
 		}
-		if max < readQuorum {
+		if maxCnt < readQuorum {
 			return 0
 		}
 		return commonCount
@@ -650,7 +646,7 @@ func calcCommonWritesDeletes(infos []DiskInfo, readQuorum int) (commonWrite, com
 
 func calcCommonCounter(infos []DiskInfo, readQuorum int) (commonCount uint64) {
 	filter := func() (commonCount uint64) {
-		max := 0
+		maxCnt := 0
 		signatureMap := map[uint64]int{}
 		for _, info := range infos {
 			if info.Error != "" {
@@ -660,12 +656,12 @@ func calcCommonCounter(infos []DiskInfo, readQuorum int) (commonCount uint64) {
 			signatureMap[mutations]++
 		}
 		for ops, count := range signatureMap {
-			if max < count && commonCount < ops {
-				max = count
+			if maxCnt < count && commonCount < ops {
+				maxCnt = count
 				commonCount = ops
 			}
 		}
-		if max < readQuorum {
+		if maxCnt < readQuorum {
 			return 0
 		}
 		return commonCount

cmd/metrics-v2.go

@@ -685,6 +685,16 @@ func getUsageLastScanActivityMD() MetricDescription {
 	}
 }
 
+func getBucketUsageLastScanActivityMD() MetricDescription {
+	return MetricDescription{
+		Namespace: bucketMetricNamespace,
+		Subsystem: usageSubsystem,
+		Name:      lastActivityTime,
+		Help:      "Time elapsed (in nano seconds) since last scan activity",
+		Type:      gaugeMetric,
+	}
+}
+
 func getBucketUsageQuotaTotalBytesMD() MetricDescription {
 	return MetricDescription{
 		Namespace: bucketMetricNamespace,
@@ -1875,13 +1885,17 @@ func getHistogramMetrics(hist *prometheus.HistogramVec, desc MetricDescription,
 		// add metrics with +Inf label
 		labels1 := make(map[string]string)
 		for _, lp := range dtoMetric.GetLabel() {
-			labels1[*lp.Name] = *lp.Value
+			if *lp.Name == "api" && toLowerAPILabels {
+				labels1[*lp.Name] = strings.ToLower(*lp.Value)
+			} else {
+				labels1[*lp.Name] = *lp.Value
+			}
 		}
 		labels1["le"] = fmt.Sprintf("%.3f", math.Inf(+1))
 		metrics = append(metrics, MetricV2{
 			Description:    desc,
 			VariableLabels: labels1,
-			Value:          dtoMetric.Counter.GetValue(),
+			Value:          float64(dtoMetric.Histogram.GetSampleCount()),
 		})
 	}
 	return metrics
@@ -3239,7 +3253,7 @@ func getBucketUsageMetrics(opts MetricsGroupOpts) *MetricsGroupV2 {
 		}
 
 		metrics = append(metrics, MetricV2{
-			Description: getUsageLastScanActivityMD(),
+			Description: getBucketUsageLastScanActivityMD(),
 			Value:       float64(time.Since(dataUsageInfo.LastUpdate)),
 		})
 

cmd/metrics-v2_test.go

@@ -18,13 +18,15 @@
 package cmd
 
 import (
+	"slices"
+	"strings"
 	"testing"
 	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 )
 
-func TestGetHistogramMetrics(t *testing.T) {
+func TestGetHistogramMetrics_BucketCount(t *testing.T) {
 	histBuckets := []float64{0.05, 0.1, 0.25, 0.5, 0.75}
 	labels := []string{"GetObject", "PutObject", "CopyObject", "CompleteMultipartUpload"}
 	ttfbHist := prometheus.NewHistogramVec(
@@ -83,6 +85,135 @@ func TestGetHistogramMetrics(t *testing.T) {
 	metrics := getHistogramMetrics(ttfbHist, getBucketTTFBDistributionMD(), false)
 	// additional labels for +Inf for all histogram metrics
 	if expPoints := len(labels) * (len(histBuckets) + 1); expPoints != len(metrics) {
-		t.Fatalf("Expected %v data points but got %v", expPoints, len(metrics))
+		t.Fatalf("Expected %v data points when toLowerAPILabels=false but got %v", expPoints, len(metrics))
+	}
+
+	metrics = getHistogramMetrics(ttfbHist, getBucketTTFBDistributionMD(), true)
+	// additional labels for +Inf for all histogram metrics
+	if expPoints := len(labels) * (len(histBuckets) + 1); expPoints != len(metrics) {
+		t.Fatalf("Expected %v data points when toLowerAPILabels=true but got %v", expPoints, len(metrics))
+	}
+}
+
+func TestGetHistogramMetrics_Values(t *testing.T) {
+	histBuckets := []float64{0.50, 5.00}
+	labels := []string{"PutObject", "CopyObject"}
+	ttfbHist := prometheus.NewHistogramVec(
+		prometheus.HistogramOpts{
+			Name:    "s3_ttfb_seconds",
+			Help:    "Time taken by requests served by current MinIO server instance",
+			Buckets: histBuckets,
+		},
+		[]string{"api"},
+	)
+	observations := []struct {
+		val   float64
+		label string
+	}{
+		{
+			val:   0.02,
+			label: labels[0],
+		},
+		{
+			val:   0.19,
+			label: labels[1],
+		},
+		{
+			val:   0.31,
+			label: labels[1],
+		},
+		{
+			val:   0.61,
+			label: labels[0],
+		},
+		{
+			val:   6.79,
+			label: labels[1],
+		},
+	}
+	ticker := time.NewTicker(1 * time.Millisecond)
+	defer ticker.Stop()
+	for _, obs := range observations {
+		// Send observations once every 1ms, to simulate delay between
+		// observations. This is to test the channel based
+		// synchronization used internally.
+		select {
+		case <-ticker.C:
+			ttfbHist.With(prometheus.Labels{"api": obs.label}).Observe(obs.val)
+		}
+	}
+
+	// Accumulate regular-cased API label metrics for 'PutObject' for deeper verification
+	metrics := getHistogramMetrics(ttfbHist, getBucketTTFBDistributionMD(), false)
+	capitalPutObjects := make([]MetricV2, 0, len(histBuckets)+1)
+	for _, metric := range metrics {
+		if value := metric.VariableLabels["api"]; value == "PutObject" {
+			capitalPutObjects = append(capitalPutObjects, metric)
+		}
+	}
+	if expMetricsPerAPI := len(histBuckets) + 1; expMetricsPerAPI != len(capitalPutObjects) {
+		t.Fatalf("Expected %d api=PutObject metrics but got %d", expMetricsPerAPI, len(capitalPutObjects))
+	}
+
+	// Deterministic ordering
+	slices.SortFunc(capitalPutObjects, func(a MetricV2, b MetricV2) int {
+		le1 := a.VariableLabels["le"]
+		le2 := a.VariableLabels["le"]
+		return strings.Compare(le1, le2)
+	})
+	if le := capitalPutObjects[0].VariableLabels["le"]; le != "0.500" {
+		t.Errorf("Expected le='0.050' api=PutObject metrics but got '%v'", le)
+	}
+	if value := capitalPutObjects[0].Value; value != 1 {
+		t.Errorf("Expected le='0.050' api=PutObject value to be 1 but got '%v'", value)
+	}
+	if le := capitalPutObjects[1].VariableLabels["le"]; le != "5.000" {
+		t.Errorf("Expected le='5.000' api=PutObject metrics but got '%v'", le)
+	}
+	if value := capitalPutObjects[1].Value; value != 2 {
+		t.Errorf("Expected le='5.000' api=PutObject value to be 2 but got '%v'", value)
+	}
+	if le := capitalPutObjects[2].VariableLabels["le"]; le != "+Inf" {
+		t.Errorf("Expected le='+Inf' api=PutObject metrics but got '%v'", le)
+	}
+	if value := capitalPutObjects[2].Value; value != 2 {
+		t.Errorf("Expected le='+Inf' api=PutObject value to be 2 but got '%v'", value)
+	}
+
+	// Accumulate lower-cased API label metrics for 'copyobject' for deeper verification
+	metrics = getHistogramMetrics(ttfbHist, getBucketTTFBDistributionMD(), true)
+	lowerCopyObjects := make([]MetricV2, 0, len(histBuckets)+1)
+	for _, metric := range metrics {
+		if value := metric.VariableLabels["api"]; value == "copyobject" {
+			lowerCopyObjects = append(lowerCopyObjects, metric)
+		}
+	}
+	if expMetricsPerAPI := len(histBuckets) + 1; expMetricsPerAPI != len(lowerCopyObjects) {
+		t.Fatalf("Expected %d api=copyobject metrics but got %d", expMetricsPerAPI, len(lowerCopyObjects))
+	}
+
+	// Deterministic ordering
+	slices.SortFunc(lowerCopyObjects, func(a MetricV2, b MetricV2) int {
+		le1 := a.VariableLabels["le"]
+		le2 := a.VariableLabels["le"]
+		return strings.Compare(le1, le2)
+	})
+	if le := lowerCopyObjects[0].VariableLabels["le"]; le != "0.500" {
+		t.Errorf("Expected le='0.050' api=copyobject metrics but got '%v'", le)
+	}
+	if value := lowerCopyObjects[0].Value; value != 2 {
+		t.Errorf("Expected le='0.050' api=copyobject value to be 2 but got '%v'", value)
+	}
+	if le := lowerCopyObjects[1].VariableLabels["le"]; le != "5.000" {
+		t.Errorf("Expected le='5.000' api=copyobject metrics but got '%v'", le)
+	}
+	if value := lowerCopyObjects[1].Value; value != 2 {
+		t.Errorf("Expected le='5.000' api=copyobject value to be 2 but got '%v'", value)
+	}
+	if le := lowerCopyObjects[2].VariableLabels["le"]; le != "+Inf" {
+		t.Errorf("Expected le='+Inf' api=copyobject metrics but got '%v'", le)
+	}
+	if value := lowerCopyObjects[2].Value; value != 3 {
+		t.Errorf("Expected le='+Inf' api=copyobject value to be 3 but got '%v'", value)
 	}
 }

cmd/metrics-v3-types.go

@@ -20,6 +20,7 @@ package cmd
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strings"
 	"sync"
 
@@ -27,7 +28,6 @@ import (
 	"github.com/minio/minio/internal/logger"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
-	"golang.org/x/exp/slices"
 )
 
 type collectorPath string

cmd/object-api-options.go

@@ -404,12 +404,7 @@ func putOptsFromHeaders(ctx context.Context, hdr http.Header, metadata map[strin
 		metadata = make(map[string]string)
 	}
 
-	wantCRC, err := hash.GetContentChecksum(hdr)
-	if err != nil {
-		return opts, fmt.Errorf("invalid/unknown checksum sent: %v", err)
-	}
 	etag := strings.TrimSpace(hdr.Get(xhttp.MinIOSourceETag))
-
 	if crypto.S3KMS.IsRequested(hdr) {
 		keyID, context, err := crypto.S3KMS.ParseHTTP(hdr)
 		if err != nil {
@@ -423,7 +418,6 @@ func putOptsFromHeaders(ctx context.Context, hdr http.Header, metadata map[strin
 			ServerSideEncryption: sseKms,
 			UserDefined:          metadata,
 			MTime:                mtime,
-			WantChecksum:         wantCRC,
 			PreserveETag:         etag,
 		}, nil
 	}
@@ -438,7 +432,6 @@ func putOptsFromHeaders(ctx context.Context, hdr http.Header, metadata map[strin
 	opts.ReplicationSourceRetentionTimestamp = retaintimestmp
 	opts.ReplicationSourceTaggingTimestamp = taggingtimestmp
 	opts.PreserveETag = etag
-	opts.WantChecksum = wantCRC
 
 	return opts, nil
 }

cmd/object-api-utils.go

@@ -29,6 +29,7 @@ import (
 	"net/http"
 	"path"
 	"runtime"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -52,7 +53,6 @@ import (
 	"github.com/minio/pkg/v3/trie"
 	"github.com/minio/pkg/v3/wildcard"
 	"github.com/valyala/bytebufferpool"
-	"golang.org/x/exp/slices"
 )
 
 const (

cmd/object-handlers-common.go

@@ -352,11 +352,11 @@ func isETagEqual(left, right string) bool {
 // setPutObjHeaders sets all the necessary headers returned back
 // upon a success Put/Copy/CompleteMultipart/Delete requests
 // to activate delete only headers set delete as true
-func setPutObjHeaders(w http.ResponseWriter, objInfo ObjectInfo, delete bool, h http.Header) {
+func setPutObjHeaders(w http.ResponseWriter, objInfo ObjectInfo, del bool, h http.Header) {
 	// We must not use the http.Header().Set method here because some (broken)
 	// clients expect the ETag header key to be literally "ETag" - not "Etag" (case-sensitive).
 	// Therefore, we have to set the ETag directly as map entry.
-	if objInfo.ETag != "" && !delete {
+	if objInfo.ETag != "" && !del {
 		w.Header()[xhttp.ETag] = []string{`"` + objInfo.ETag + `"`}
 	}
 
@@ -364,13 +364,13 @@ func setPutObjHeaders(w http.ResponseWriter, objInfo ObjectInfo, delete bool, h
 	if objInfo.VersionID != "" && objInfo.VersionID != nullVersionID {
 		w.Header()[xhttp.AmzVersionID] = []string{objInfo.VersionID}
 		// If version is a deleted marker, set this header as well
-		if objInfo.DeleteMarker && delete { // only returned during delete object
+		if objInfo.DeleteMarker && del { // only returned during delete object
 			w.Header()[xhttp.AmzDeleteMarker] = []string{strconv.FormatBool(objInfo.DeleteMarker)}
 		}
 	}
 
 	if objInfo.Bucket != "" && objInfo.Name != "" {
-		if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil && !delete {
+		if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil && !del {
 			lc.SetPredictionHeaders(w, objInfo.ToLifecycleOpts())
 		}
 	}

cmd/object-handlers.go

@@ -1191,6 +1191,9 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
 		return
 	}
 
+	// Sanitize the source object name similar to NewMultipart and PutObject API
+	srcObject = trimLeadingSlash(srcObject)
+
 	if vid != "" && vid != nullVersionID {
 		_, err := uuid.Parse(vid)
 		if err != nil {
@@ -1899,6 +1902,13 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
 	var reader io.Reader
 	reader = rd
 
+	var opts ObjectOptions
+	opts, err = putOptsFromReq(ctx, r, bucket, object, metadata)
+	if err != nil {
+		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
+		return
+	}
+
 	actualSize := size
 	var idxCb func() []byte
 	if isCompressible(r.Header, object) && size > minCompressibleSize {
@@ -1915,6 +1925,8 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
 			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
 			return
 		}
+		opts.WantChecksum = actualReader.Checksum()
+
 		// Set compression metrics.
 		var s2c io.ReadCloser
 		wantEncryption := crypto.Requested(r.Header)
@@ -1945,22 +1957,17 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
 		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
 		return
 	}
-	if err := hashReader.AddChecksum(r, size < 0); err != nil {
-		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
-		return
+	if size >= 0 {
+		if err := hashReader.AddChecksum(r, false); err != nil {
+			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
+			return
+		}
+		opts.WantChecksum = hashReader.Checksum()
 	}
 
 	rawReader := hashReader
 	pReader := NewPutObjReader(rawReader)
-
-	var opts ObjectOptions
-	opts, err = putOptsFromReq(ctx, r, bucket, object, metadata)
-	if err != nil {
-		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
-		return
-	}
 	opts.IndexCB = idxCb
-	opts.WantChecksum = hashReader.Checksum()
 
 	if opts.PreserveETag != "" ||
 		r.Header.Get(xhttp.IfMatch) != "" ||
@@ -2899,6 +2906,8 @@ func (api objectAPIHandlers) PutObjectRetentionHandler(w http.ResponseWriter, r
 		writeErrorResponse(ctx, w, apiErr, r.URL)
 		return
 	}
+	reqInfo := logger.GetReqInfo(ctx)
+	reqInfo.SetTags("retention", objRetention.String())
 
 	opts, err := getOpts(ctx, r, bucket, object)
 	if err != nil {

cmd/object-multipart-handlers.go

@@ -1204,6 +1204,10 @@ func (api objectAPIHandlers) ListObjectPartsHandler(w http.ResponseWriter, r *ht
 			listPartsInfo.Parts[i].ETag = tryDecryptETag(objectEncryptionKey, p.ETag, kind == crypto.S3)
 			listPartsInfo.Parts[i].Size = p.ActualSize
 		}
+	} else if _, ok := listPartsInfo.UserDefined[ReservedMetadataPrefix+"compression"]; ok {
+		for i, p := range listPartsInfo.Parts {
+			listPartsInfo.Parts[i].Size = p.ActualSize
+		}
 	}
 
 	response := generateListPartsResponse(listPartsInfo, encodingType)

cmd/os_windows.go

@@ -60,20 +60,19 @@ func readDirFn(dirPath string, filter func(name string, typ os.FileMode) error)
 		if err != nil {
 			if err == syscall.ERROR_NO_MORE_FILES {
 				break
-			} else {
-				if isSysErrPathNotFound(err) {
-					return nil
-				}
-				err = osErrToFileErr(&os.PathError{
-					Op:   "FindNextFile",
-					Path: dirPath,
-					Err:  err,
-				})
-				if err == errFileNotFound {
-					return nil
-				}
-				return err
 			}
+			if isSysErrPathNotFound(err) {
+				return nil
+			}
+			err = osErrToFileErr(&os.PathError{
+				Op:   "FindNextFile",
+				Path: dirPath,
+				Err:  err,
+			})
+			if err == errFileNotFound {
+				return nil
+			}
+			return err
 		}
 		name := syscall.UTF16ToString(data.FileName[0:])
 		if name == "" || name == "." || name == ".." { // Useless names
@@ -136,13 +135,12 @@ func readDirWithOpts(dirPath string, opts readDirOpts) (entries []string, err er
 		if err != nil {
 			if err == syscall.ERROR_NO_MORE_FILES {
 				break
-			} else {
-				return nil, osErrToFileErr(&os.PathError{
-					Op:   "FindNextFile",
-					Path: dirPath,
-					Err:  err,
-				})
 			}
+			return nil, osErrToFileErr(&os.PathError{
+				Op:   "FindNextFile",
+				Path: dirPath,
+				Err:  err,
+			})
 		}
 
 		name := syscall.UTF16ToString(data.FileName[0:])

cmd/peer-rest-server.go

@@ -56,6 +56,7 @@ var (
 	aoBucketInfo           = grid.NewArrayOf[*BucketInfo](func() *BucketInfo { return &BucketInfo{} })
 	aoMetricsGroup         = grid.NewArrayOf[*MetricV2](func() *MetricV2 { return &MetricV2{} })
 	madminBgHealState      = grid.NewJSONPool[madmin.BgHealState]()
+	madminHealResultItem   = grid.NewJSONPool[madmin.HealResultItem]()
 	madminCPUs             = grid.NewJSONPool[madmin.CPUs]()
 	madminMemInfo          = grid.NewJSONPool[madmin.MemInfo]()
 	madminNetInfo          = grid.NewJSONPool[madmin.NetInfo]()
@@ -97,7 +98,7 @@ var (
 	getSysErrorsRPC                = grid.NewSingleHandler[*grid.MSS, *grid.JSON[madmin.SysErrors]](grid.HandlerGetSysErrors, grid.NewMSS, madminSysErrors.NewJSON)
 	getSysServicesRPC              = grid.NewSingleHandler[*grid.MSS, *grid.JSON[madmin.SysServices]](grid.HandlerGetSysServices, grid.NewMSS, madminSysServices.NewJSON)
 	headBucketRPC                  = grid.NewSingleHandler[*grid.MSS, *VolInfo](grid.HandlerHeadBucket, grid.NewMSS, func() *VolInfo { return &VolInfo{} })
-	healBucketRPC                  = grid.NewSingleHandler[*grid.MSS, grid.NoPayload](grid.HandlerHealBucket, grid.NewMSS, grid.NewNoPayload)
+	healBucketRPC                  = grid.NewSingleHandler[*grid.MSS, *grid.JSON[madmin.HealResultItem]](grid.HandlerHealBucket, grid.NewMSS, madminHealResultItem.NewJSON)
 	listBucketsRPC                 = grid.NewSingleHandler[*BucketOptions, *grid.Array[*BucketInfo]](grid.HandlerListBuckets, func() *BucketOptions { return &BucketOptions{} }, aoBucketInfo.New)
 	loadBucketMetadataRPC          = grid.NewSingleHandler[*grid.MSS, grid.NoPayload](grid.HandlerLoadBucketMetadata, grid.NewMSS, grid.NewNoPayload).IgnoreNilConn()
 	loadGroupRPC                   = grid.NewSingleHandler[*grid.MSS, grid.NoPayload](grid.HandlerLoadGroup, grid.NewMSS, grid.NewNoPayload)
@@ -1258,21 +1259,21 @@ func (s *peerRESTServer) NetSpeedTestHandler(w http.ResponseWriter, r *http.Requ
 	peersLogIf(r.Context(), gob.NewEncoder(w).Encode(result))
 }
 
-func (s *peerRESTServer) HealBucketHandler(mss *grid.MSS) (np grid.NoPayload, nerr *grid.RemoteErr) {
+func (s *peerRESTServer) HealBucketHandler(mss *grid.MSS) (np *grid.JSON[madmin.HealResultItem], nerr *grid.RemoteErr) {
 	bucket := mss.Get(peerS3Bucket)
 	if isMinioMetaBucket(bucket) {
 		return np, grid.NewRemoteErr(errInvalidArgument)
 	}
 
 	bucketDeleted := mss.Get(peerS3BucketDeleted) == "true"
-	_, err := healBucketLocal(context.Background(), bucket, madmin.HealOpts{
+	res, err := healBucketLocal(context.Background(), bucket, madmin.HealOpts{
 		Remove: bucketDeleted,
 	})
 	if err != nil {
 		return np, grid.NewRemoteErr(err)
 	}
 
-	return np, nil
+	return madminHealResultItem.NewJSONWith(&res), nil
 }
 
 func (s *peerRESTServer) ListBucketsHandler(opts *BucketOptions) (*grid.Array[*BucketInfo], *grid.RemoteErr) {

cmd/peer-s3-client.go

@@ -21,6 +21,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 	"sort"
 	"strconv"
 	"sync/atomic"
@@ -29,7 +30,6 @@ import (
 	"github.com/minio/madmin-go/v3"
 	"github.com/minio/minio/internal/grid"
 	"github.com/minio/pkg/v3/sync/errgroup"
-	"golang.org/x/exp/slices"
 )
 
 var errPeerOffline = errors.New("peer is offline")
@@ -178,13 +178,24 @@ func (sys *S3PeerSys) HealBucket(ctx context.Context, bucket string, opts madmin
 		}
 	}
 
+	if healBucketErr := reduceWriteQuorumErrs(ctx, errs, bucketOpIgnoredErrs, len(errs)/2+1); healBucketErr != nil {
+		return madmin.HealResultItem{}, toObjectErr(healBucketErr, bucket)
+	}
+
+	res := madmin.HealResultItem{
+		Type:     madmin.HealItemBucket,
+		Bucket:   bucket,
+		SetCount: -1, // explicitly set an invalid value -1, for bucket heal scenario
+	}
+
 	for i, err := range errs {
 		if err == nil {
-			return healBucketResults[i], nil
+			res.Before.Drives = append(res.Before.Drives, healBucketResults[i].Before.Drives...)
+			res.After.Drives = append(res.After.Drives, healBucketResults[i].After.Drives...)
 		}
 	}
 
-	return madmin.HealResultItem{}, toObjectErr(errVolumeNotFound, bucket)
+	return res, nil
 }
 
 // ListBuckets lists buckets across all nodes and returns a consistent view:
@@ -355,14 +366,8 @@ func (client *remotePeerS3Client) HealBucket(ctx context.Context, bucket string,
 	ctx, cancel := context.WithTimeout(ctx, globalDriveConfig.GetMaxTimeout())
 	defer cancel()
 
-	_, err := healBucketRPC.Call(ctx, conn, mss)
-
-	// Initialize heal result info
-	return madmin.HealResultItem{
-		Type:     madmin.HealItemBucket,
-		Bucket:   bucket,
-		SetCount: -1, // explicitly set an invalid value -1, for bucket heal scenario
-	}, toStorageErr(err)
+	resp, err := healBucketRPC.Call(ctx, conn, mss)
+	return resp.ValueOrZero(), toStorageErr(err)
 }
 
 // GetBucketInfo returns bucket stat info from a peer

cmd/peer-s3-server.go

@@ -101,7 +101,7 @@ func healBucketLocal(ctx context.Context, bucket string, opts madmin.HealOpts) (
 	for i := range beforeState {
 		res.Before.Drives = append(res.Before.Drives, madmin.HealDriveInfo{
 			UUID:     "",
-			Endpoint: localDrives[i].String(),
+			Endpoint: localDrives[i].Endpoint().String(),
 			State:    beforeState[i],
 		})
 	}
@@ -149,7 +149,7 @@ func healBucketLocal(ctx context.Context, bucket string, opts madmin.HealOpts) (
 	for i := range afterState {
 		res.After.Drives = append(res.After.Drives, madmin.HealDriveInfo{
 			UUID:     "",
-			Endpoint: localDrives[i].String(),
+			Endpoint: localDrives[i].Endpoint().String(),
 			State:    afterState[i],
 		})
 	}

cmd/post-policy_test.go

@@ -56,10 +56,12 @@ func newPostPolicyBytesV4WithContentRange(credential, bucketName, objectKey stri
 	credentialConditionStr := fmt.Sprintf(`["eq", "$x-amz-credential", "%s"]`, credential)
 	// Add the meta-uuid string, set to 1234
 	uuidConditionStr := fmt.Sprintf(`["eq", "$x-amz-meta-uuid", "%s"]`, "1234")
+	// Add the content-encoding string, set to gzip.
+	contentEncodingConditionStr := fmt.Sprintf(`["eq", "$content-encoding", "%s"]`, "gzip")
 
 	// Combine all conditions into one string.
-	conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s, %s, %s]`, bucketConditionStr,
-		keyConditionStr, contentLengthCondStr, algorithmConditionStr, dateConditionStr, credentialConditionStr, uuidConditionStr)
+	conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s, %s, %s, %s]`, bucketConditionStr,
+		keyConditionStr, contentLengthCondStr, algorithmConditionStr, dateConditionStr, credentialConditionStr, uuidConditionStr, contentEncodingConditionStr)
 	retStr := "{"
 	retStr = retStr + expirationStr + ","
 	retStr += conditionStr
@@ -85,9 +87,11 @@ func newPostPolicyBytesV4(credential, bucketName, objectKey string, expiration t
 	credentialConditionStr := fmt.Sprintf(`["eq", "$x-amz-credential", "%s"]`, credential)
 	// Add the meta-uuid string, set to 1234
 	uuidConditionStr := fmt.Sprintf(`["eq", "$x-amz-meta-uuid", "%s"]`, "1234")
+	// Add the content-encoding string, set to gzip
+	contentEncodingConditionStr := fmt.Sprintf(`["eq", "$content-encoding", "%s"]`, "gzip")
 
 	// Combine all conditions into one string.
-	conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s, %s]`, bucketConditionStr, keyConditionStr, algorithmConditionStr, dateConditionStr, credentialConditionStr, uuidConditionStr)
+	conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s, %s, %s]`, bucketConditionStr, keyConditionStr, algorithmConditionStr, dateConditionStr, credentialConditionStr, uuidConditionStr, contentEncodingConditionStr)
 	retStr := "{"
 	retStr = retStr + expirationStr + ","
 	retStr += conditionStr
@@ -331,7 +335,7 @@ func testPostPolicyBucketHandler(obj ObjectLayer, instanceType string, t TestErr
 			accessKey:          credentials.AccessKey,
 			secretKey:          credentials.SecretKey,
 			dates:              []interface{}{curTimePlus5Min.Format(iso8601TimeFormat), curTime.Format(iso8601DateFormat), curTime.Format(yyyymmdd)},
-			policy:             `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], ["starts-with", "$key", "test/"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$x-amz-meta-uuid", "1234"]]}`,
+			policy:             `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], ["starts-with", "$key", "test/"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$x-amz-meta-uuid", "1234"],["eq", "$content-encoding", "gzip"]]}`,
 		},
 		// Success case, no multipart filename.
 		{
@@ -341,7 +345,7 @@ func testPostPolicyBucketHandler(obj ObjectLayer, instanceType string, t TestErr
 			accessKey:          credentials.AccessKey,
 			secretKey:          credentials.SecretKey,
 			dates:              []interface{}{curTimePlus5Min.Format(iso8601TimeFormat), curTime.Format(iso8601DateFormat), curTime.Format(yyyymmdd)},
-			policy:             `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], ["starts-with", "$key", "test/"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$x-amz-meta-uuid", "1234"]]}`,
+			policy:             `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], ["starts-with", "$key", "test/"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$x-amz-meta-uuid", "1234"],["eq", "$content-encoding", "gzip"]]}`,
 			noFilename:         true,
 		},
 		// Success case, big body.
@@ -352,7 +356,7 @@ func testPostPolicyBucketHandler(obj ObjectLayer, instanceType string, t TestErr
 			accessKey:          credentials.AccessKey,
 			secretKey:          credentials.SecretKey,
 			dates:              []interface{}{curTimePlus5Min.Format(iso8601TimeFormat), curTime.Format(iso8601DateFormat), curTime.Format(yyyymmdd)},
-			policy:             `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], ["starts-with", "$key", "test/"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$x-amz-meta-uuid", "1234"]]}`,
+			policy:             `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], ["starts-with", "$key", "test/"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$x-amz-meta-uuid", "1234"],["eq", "$content-encoding", "gzip"]]}`,
 		},
 		// Corrupted Base 64 result
 		{
@@ -447,7 +451,7 @@ func testPostPolicyBucketHandler(obj ObjectLayer, instanceType string, t TestErr
 			malformedBody:       false,
 			ignoreContentLength: false,
 		},
-		// Failed with Content-Length not specified.
+		// Success with Content-Length not specified.
 		{
 			objectName:          "test",
 			data:                bytes.Repeat([]byte("a"), 1025),
@@ -547,7 +551,7 @@ func testPostPolicyBucketHandlerRedirect(obj ObjectLayer, instanceType string, t
 	rec := httptest.NewRecorder()
 
 	dates := []interface{}{curTimePlus5Min.Format(iso8601TimeFormat), curTime.Format(iso8601DateFormat), curTime.Format(yyyymmdd)}
-	policy := `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], {"success_action_redirect":"` + redirectURL.String() + `"},["starts-with", "$key", "test/"], ["eq", "$x-amz-meta-uuid", "1234"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"]]}`
+	policy := `{"expiration": "%s","conditions":[["eq", "$bucket", "` + bucketName + `"], {"success_action_redirect":"` + redirectURL.String() + `"},["starts-with", "$key", "test/"], ["eq", "$x-amz-meta-uuid", "1234"], ["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"], ["eq", "$x-amz-date", "%s"], ["eq", "$x-amz-credential", "` + credentials.AccessKey + `/%s/us-east-1/s3/aws4_request"],["eq", "$content-encoding", "gzip"]]}`
 
 	// Generate the final policy document
 	policy = fmt.Sprintf(policy, dates...)

cmd/postpolicyform.go

@@ -53,18 +53,6 @@ var startsWithConds = map[string]bool{
 	"$x-amz-date":              false,
 }
 
-var postPolicyIgnoreKeys = map[string]bool{
-	"Policy":              true,
-	xhttp.AmzSignature:    true,
-	xhttp.ContentEncoding: true,
-	http.CanonicalHeaderKey(xhttp.AmzChecksumAlgo):   true,
-	http.CanonicalHeaderKey(xhttp.AmzChecksumCRC32):  true,
-	http.CanonicalHeaderKey(xhttp.AmzChecksumCRC32C): true,
-	http.CanonicalHeaderKey(xhttp.AmzChecksumSHA1):   true,
-	http.CanonicalHeaderKey(xhttp.AmzChecksumSHA256): true,
-	http.CanonicalHeaderKey(xhttp.AmzChecksumMode):   true,
-}
-
 // Add policy conditionals.
 const (
 	policyCondEqual         = "eq"
@@ -232,19 +220,19 @@ func parsePostPolicyForm(r io.Reader) (PostPolicyForm, error) {
 					operator, matchType, value,
 				})
 			case policyCondContentLength:
-				min, err := toInteger(condt[1])
+				minLen, err := toInteger(condt[1])
 				if err != nil {
 					return parsedPolicy, err
 				}
 
-				max, err := toInteger(condt[2])
+				maxLen, err := toInteger(condt[2])
 				if err != nil {
 					return parsedPolicy, err
 				}
 
 				parsedPolicy.Conditions.ContentLengthRange = contentLengthRange{
-					Min:   min,
-					Max:   max,
+					Min:   minLen,
+					Max:   maxLen,
 					Valid: true,
 				}
 			default:
@@ -272,60 +260,57 @@ func checkPolicyCond(op string, input1, input2 string) bool {
 	return false
 }
 
+// S3 docs: "Each form field that you specify in a form (except x-amz-signature, file, policy, and field names
+// that have an x-ignore- prefix) must appear in the list of conditions."
+// https://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-HTTPPOSTConstructPolicy.html
+// keyInPolicyExceptions - list of keys that, when present in the form, can be missing in the conditions of the policy.
+var keyInPolicyExceptions = map[string]bool{
+	xhttp.AmzSignature: true,
+	"File":             true,
+	"Policy":           true,
+
+	// MinIO specific exceptions to the general S3 rule above.
+	encrypt.SseKmsKeyID:          true,
+	encrypt.SseEncryptionContext: true,
+	encrypt.SseCustomerAlgorithm: true,
+	encrypt.SseCustomerKey:       true,
+	encrypt.SseCustomerKeyMD5:    true,
+}
+
 // checkPostPolicy - apply policy conditions and validate input values.
-// (http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-HTTPPOSTConstructPolicy.html)
+// Note that content-length-range is checked in the API handler function PostPolicyBucketHandler.
+// formValues is the already-canonicalized form values from the POST request.
 func checkPostPolicy(formValues http.Header, postPolicyForm PostPolicyForm) error {
 	// Check if policy document expiry date is still not reached
 	if !postPolicyForm.Expiration.After(UTCNow()) {
 		return fmt.Errorf("Invalid according to Policy: Policy expired")
 	}
-	// check all formValues appear in postPolicyForm or return error. #https://github.com/minio/minio/issues/17391
-	checkHeader := map[string][]string{}
-	ignoreKeys := map[string]bool{}
-	for key, value := range formValues {
-		switch {
-		case ignoreKeys[key], postPolicyIgnoreKeys[key], strings.HasPrefix(key, encrypt.SseGenericHeader):
-			continue
-		case strings.HasPrefix(key, "X-Amz-Ignore-"):
-			ignoreKey := strings.Replace(key, "X-Amz-Ignore-", "", 1)
-			ignoreKeys[ignoreKey] = true
-			// if it have already
-			delete(checkHeader, ignoreKey)
-		default:
-			checkHeader[key] = value
-		}
-	}
-	// map to store the metadata
-	metaMap := make(map[string]string)
-	for _, policy := range postPolicyForm.Conditions.Policies {
-		if strings.HasPrefix(policy.Key, "$x-amz-meta-") {
-			formCanonicalName := http.CanonicalHeaderKey(strings.TrimPrefix(policy.Key, "$"))
-			metaMap[formCanonicalName] = policy.Value
-		}
-	}
-	// Check if any extra metadata field is passed as input
-	for key := range formValues {
-		if strings.HasPrefix(key, "X-Amz-Meta-") {
-			if _, ok := metaMap[key]; !ok {
-				return fmt.Errorf("Invalid according to Policy: Extra input fields: %s", key)
-			}
-		}
-	}
 
-	// Flag to indicate if all policies conditions are satisfied
-	var condPassed bool
+	// mustFindInPolicy is a map to list all the keys that we must find in the policy as
+	// we process it below. At the end of checkPostPolicy function, if any key is left in
+	// this map, that's an error.
+	mustFindInPolicy := make(map[string][]string, len(formValues))
+	for key, values := range formValues {
+		if keyInPolicyExceptions[key] || strings.HasPrefix(key, "X-Ignore-") {
+			continue
+		}
+		mustFindInPolicy[key] = values
+	}
 
 	// Iterate over policy conditions and check them against received form fields
 	for _, policy := range postPolicyForm.Conditions.Policies {
 		// Form fields names are in canonical format, convert conditions names
 		// to canonical for simplification purpose, so `$key` will become `Key`
 		formCanonicalName := http.CanonicalHeaderKey(strings.TrimPrefix(policy.Key, "$"))
+
 		// Operator for the current policy condition
 		op := policy.Operator
-		// Multiple values should not occur
-		if len(checkHeader[formCanonicalName]) >= 2 {
-			return fmt.Errorf("Invalid according to Policy: Policy Condition failed: [%s, %s, %s]. FormValues have multiple values: [%s]", op, policy.Key, policy.Value, strings.Join(checkHeader[formCanonicalName], ", "))
+
+		// Multiple values are not allowed for a single form field
+		if len(mustFindInPolicy[formCanonicalName]) >= 2 {
+			return fmt.Errorf("Invalid according to Policy: Policy Condition failed: [%s, %s, %s]. FormValues have multiple values: [%s]", op, policy.Key, policy.Value, strings.Join(mustFindInPolicy[formCanonicalName], ", "))
 		}
+
 		// If the current policy condition is known
 		if startsWithSupported, condFound := startsWithConds[policy.Key]; condFound {
 			// Check if the current condition supports starts-with operator
@@ -333,35 +318,35 @@ func checkPostPolicy(formValues http.Header, postPolicyForm PostPolicyForm) erro
 				return fmt.Errorf("Invalid according to Policy: Policy Condition failed")
 			}
 			// Check if current policy condition is satisfied
-			condPassed = checkPolicyCond(op, formValues.Get(formCanonicalName), policy.Value)
-			if !condPassed {
+			if !checkPolicyCond(op, formValues.Get(formCanonicalName), policy.Value) {
 				return fmt.Errorf("Invalid according to Policy: Policy Condition failed")
 			}
 		} else if strings.HasPrefix(policy.Key, "$x-amz-meta-") || strings.HasPrefix(policy.Key, "$x-amz-") {
 			// This covers all conditions X-Amz-Meta-* and X-Amz-*
 			// Check if policy condition is satisfied
-			condPassed = checkPolicyCond(op, formValues.Get(formCanonicalName), policy.Value)
-			if !condPassed {
+			if !checkPolicyCond(op, formValues.Get(formCanonicalName), policy.Value) {
 				return fmt.Errorf("Invalid according to Policy: Policy Condition failed: [%s, %s, %s]", op, policy.Key, policy.Value)
 			}
 		}
-		delete(checkHeader, formCanonicalName)
+		delete(mustFindInPolicy, formCanonicalName)
 	}
-	// For SignV2 - Signature/AWSAccessKeyId field will be ignored.
+
+	// For SignV2 - Signature/AWSAccessKeyId fields do not need to be in the policy
 	if _, ok := formValues[xhttp.AmzSignatureV2]; ok {
-		delete(checkHeader, xhttp.AmzSignatureV2)
-		for k := range checkHeader {
+		delete(mustFindInPolicy, xhttp.AmzSignatureV2)
+		for k := range mustFindInPolicy {
 			// case-insensitivity for AWSAccessKeyId
 			if strings.EqualFold(k, xhttp.AmzAccessKeyID) {
-				delete(checkHeader, k)
+				delete(mustFindInPolicy, k)
 				break
 			}
 		}
 	}
 
-	if len(checkHeader) != 0 {
-		logKeys := make([]string, 0, len(checkHeader))
-		for key := range checkHeader {
+	// Check mustFindInPolicy to see if any key is left, if so, it was not found in policy and we return an error.
+	if len(mustFindInPolicy) != 0 {
+		logKeys := make([]string, 0, len(mustFindInPolicy))
+		for key := range mustFindInPolicy {
 			logKeys = append(logKeys, key)
 		}
 		return fmt.Errorf("Each form field that you specify in a form must appear in the list of policy conditions. %q not specified in the policy.", strings.Join(logKeys, ", "))

cmd/postpolicyform_test.go

@@ -20,12 +20,12 @@ package cmd
 import (
 	"bytes"
 	"encoding/base64"
-	"fmt"
 	"net/http"
 	"strings"
 	"testing"
 
 	minio "github.com/minio/minio-go/v7"
+	xhttp "github.com/minio/minio/internal/http"
 )
 
 func TestParsePostPolicyForm(t *testing.T) {
@@ -78,6 +78,28 @@ func TestParsePostPolicyForm(t *testing.T) {
 	}
 }
 
+type formValues struct {
+	http.Header
+}
+
+func newFormValues() formValues {
+	return formValues{make(http.Header)}
+}
+
+func (f formValues) Set(key, value string) formValues {
+	f.Header.Set(key, value)
+	return f
+}
+
+func (f formValues) Add(key, value string) formValues {
+	f.Header.Add(key, value)
+	return f
+}
+
+func (f formValues) Clone() formValues {
+	return formValues{f.Header.Clone()}
+}
+
 // Test Post Policy parsing and checking conditions
 func TestPostPolicyForm(t *testing.T) {
 	pp := minio.NewPostPolicy()
@@ -85,76 +107,193 @@ func TestPostPolicyForm(t *testing.T) {
 	pp.SetContentType("image/jpeg")
 	pp.SetUserMetadata("uuid", "14365123651274")
 	pp.SetKeyStartsWith("user/user1/filename")
-	pp.SetContentLengthRange(1048579, 10485760)
+	pp.SetContentLengthRange(100, 999999) // not testable from this layer, condition is checked in the API handler.
 	pp.SetSuccessStatusAction("201")
+	pp.SetCondition("eq", "X-Amz-Credential", "KVGKMDUQ23TCZXTLTHLP/20160727/us-east-1/s3/aws4_request")
+	pp.SetCondition("eq", "X-Amz-Algorithm", "AWS4-HMAC-SHA256")
+	pp.SetCondition("eq", xhttp.AmzDate, "20160727T000000Z")
+
+	defaultFormVals := newFormValues()
+	defaultFormVals.Set("Bucket", "testbucket")
+	defaultFormVals.Set("Content-Type", "image/jpeg")
+	defaultFormVals.Set(xhttp.AmzMetaUUID, "14365123651274")
+	defaultFormVals.Set("Key", "user/user1/filename/${filename}/myfile.txt")
+	defaultFormVals.Set("X-Amz-Credential", "KVGKMDUQ23TCZXTLTHLP/20160727/us-east-1/s3/aws4_request")
+	defaultFormVals.Set("X-Amz-Algorithm", "AWS4-HMAC-SHA256")
+	defaultFormVals.Set(xhttp.AmzDate, "20160727T000000Z")
+	defaultFormVals.Set("Success_action_status", "201")
+
+	policyCondFailedErr := "Invalid according to Policy: Policy Condition failed"
 
 	type testCase struct {
-		Bucket              string
-		Key                 string
-		XAmzDate            string
-		XAmzAlgorithm       string
-		XAmzCredential      string
-		XAmzMetaUUID        string
-		ContentType         string
-		SuccessActionStatus string
-		Policy              string
-		Expired             bool
-		expectedErr         error
+		name    string
+		fv      formValues
+		expired bool
+		wantErr string
 	}
 
+	// Test case just contains fields we override from defaultFormVals.
 	testCases := []testCase{
-		// Everything is fine with this test
-		{Bucket: "testbucket", Key: "user/user1/filename/${filename}/myfile.txt", XAmzMetaUUID: "14365123651274", SuccessActionStatus: "201", XAmzCredential: "KVGKMDUQ23TCZXTLTHLP/20160727/us-east-1/s3/aws4_request", XAmzDate: "20160727T000000Z", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: nil},
-		// Expired policy document
-		{Bucket: "testbucket", Key: "user/user1/filename/${filename}/myfile.txt", XAmzMetaUUID: "14365123651274", SuccessActionStatus: "201", XAmzCredential: "KVGKMDUQ23TCZXTLTHLP/20160727/us-east-1/s3/aws4_request", XAmzDate: "20160727T000000Z", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", Expired: true, expectedErr: fmt.Errorf("Invalid according to Policy: Policy expired")},
-		// Different AMZ date
-		{Bucket: "testbucket", Key: "user/user1/filename/${filename}/myfile.txt", XAmzMetaUUID: "14365123651274", XAmzDate: "2017T000000Z", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed")},
-		// Key which doesn't start with user/user1/filename
-		{Bucket: "testbucket", Key: "myfile.txt", XAmzDate: "20160727T000000Z", XAmzMetaUUID: "14365123651274", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed")},
-		// Incorrect bucket name.
-		{Bucket: "incorrect", Key: "user/user1/filename/myfile.txt", XAmzMetaUUID: "14365123651274", XAmzDate: "20160727T000000Z", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed")},
-		// Incorrect key name
-		{Bucket: "testbucket", Key: "incorrect", XAmzDate: "20160727T000000Z", XAmzMetaUUID: "14365123651274", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed")},
-		// Incorrect date
-		{Bucket: "testbucket", Key: "user/user1/filename/${filename}/myfile.txt", XAmzMetaUUID: "14365123651274", XAmzDate: "incorrect", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed")},
-		// Incorrect ContentType
-		{Bucket: "testbucket", Key: "user/user1/filename/${filename}/myfile.txt", XAmzMetaUUID: "14365123651274", XAmzDate: "20160727T000000Z", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "incorrect", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed")},
-		// Incorrect Metadata
-		{Bucket: "testbucket", Key: "user/user1/filename/${filename}/myfile.txt", XAmzMetaUUID: "151274", SuccessActionStatus: "201", XAmzCredential: "KVGKMDUQ23TCZXTLTHLP/20160727/us-east-1/s3/aws4_request", XAmzDate: "20160727T000000Z", XAmzAlgorithm: "AWS4-HMAC-SHA256", ContentType: "image/jpeg", expectedErr: fmt.Errorf("Invalid according to Policy: Policy Condition failed: [eq, $x-amz-meta-uuid, 14365123651274]")},
+		{
+			name:    "happy path no errors",
+			fv:      defaultFormVals.Clone(),
+			wantErr: "",
+		},
+		{
+			name:    "expired policy document",
+			fv:      defaultFormVals.Clone(),
+			expired: true,
+			wantErr: "Invalid according to Policy: Policy expired",
+		},
+		{
+			name:    "different AMZ date",
+			fv:      defaultFormVals.Clone().Set(xhttp.AmzDate, "2017T000000Z"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect date",
+			fv:      defaultFormVals.Clone().Set(xhttp.AmzDate, "incorrect"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "key which doesn't start with user/user1/filename",
+			fv:      defaultFormVals.Clone().Set("Key", "myfile.txt"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect key name",
+			fv:      defaultFormVals.Clone().Set("Key", "incorrect"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect bucket name",
+			fv:      defaultFormVals.Clone().Set("Bucket", "incorrect"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect ContentType",
+			fv:      defaultFormVals.Clone().Set(xhttp.ContentType, "incorrect"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect X-Amz-Algorithm",
+			fv:      defaultFormVals.Clone().Set(xhttp.AmzAlgorithm, "incorrect"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect X-Amz-Credential",
+			fv:      defaultFormVals.Clone().Set(xhttp.AmzCredential, "incorrect"),
+			wantErr: policyCondFailedErr,
+		},
+		{
+			name:    "incorrect metadata uuid",
+			fv:      defaultFormVals.Clone().Set(xhttp.AmzMetaUUID, "151274"),
+			wantErr: "Invalid according to Policy: Policy Condition failed: [eq, $x-amz-meta-uuid, 14365123651274]",
+		},
+		{
+			name:    "unknown key XAmzMetaName is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(xhttp.AmzMetaName, "my-name"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Meta-Name" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key XAmzChecksumAlgo is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumAlgo), "algo-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Checksum-Algorithm" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key XAmzChecksumCRC32 is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumCRC32), "crc32-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Checksum-Crc32" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key XAmzChecksumCRC32C is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumCRC32C), "crc32c-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Checksum-Crc32c" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key XAmzChecksumSHA1 is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumSHA1), "sha1-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Checksum-Sha1" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key XAmzChecksumSHA256 is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumSHA256), "sha256-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Checksum-Sha256" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key XAmzChecksumMode is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.AmzChecksumMode), "mode-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "X-Amz-Checksum-Mode" not specified in the policy.`,
+		},
+		{
+			name:    "unknown key Content-Encoding is error as it does not appear in policy",
+			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.ContentEncoding), "encoding-val"),
+			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "Content-Encoding" not specified in the policy.`,
+		},
+		{
+			name:    "many bucket values",
+			fv:      defaultFormVals.Clone().Add("Bucket", "anotherbucket"),
+			wantErr: "Invalid according to Policy: Policy Condition failed: [eq, $bucket, testbucket]. FormValues have multiple values: [testbucket, anotherbucket]",
+		},
+		{
+			name: "XAmzSignature does not have to appear in policy",
+			fv:   defaultFormVals.Clone().Set(xhttp.AmzSignature, "my-signature"),
+		},
+		{
+			name: "XIgnoreFoo does not have to appear in policy",
+			fv:   defaultFormVals.Clone().Set("X-Ignore-Foo", "my-foo-value"),
+		},
+		{
+			name: "File does not have to appear in policy",
+			fv:   defaultFormVals.Clone().Set("File", "file-value"),
+		},
+		{
+			name: "Signature does not have to appear in policy",
+			fv:   defaultFormVals.Clone().Set(xhttp.AmzSignatureV2, "signature-value"),
+		},
+		{
+			name: "AWSAccessKeyID does not have to appear in policy",
+			fv:   defaultFormVals.Clone().Set(xhttp.AmzAccessKeyID, "access").Set(xhttp.AmzSignatureV2, "signature-value"),
+		},
+		{
+			name: "any form value starting with X-Amz-Server-Side-Encryption- does not have to appear in policy",
+			fv: defaultFormVals.Clone().
+				Set(xhttp.AmzServerSideEncryptionKmsContext, "context-val").
+				Set(xhttp.AmzServerSideEncryptionCustomerAlgorithm, "algo-val"),
+		},
 	}
-	// Validate all the test cases.
-	for i, tt := range testCases {
-		formValues := make(http.Header)
-		formValues.Set("Bucket", tt.Bucket)
-		formValues.Set("Key", tt.Key)
-		formValues.Set("Content-Type", tt.ContentType)
-		formValues.Set("X-Amz-Date", tt.XAmzDate)
-		formValues.Set("X-Amz-Meta-Uuid", tt.XAmzMetaUUID)
-		formValues.Set("X-Amz-Algorithm", tt.XAmzAlgorithm)
-		formValues.Set("X-Amz-Credential", tt.XAmzCredential)
-		if tt.Expired {
-			// Expired already.
-			pp.SetExpires(UTCNow().AddDate(0, 0, -10))
-		} else {
-			// Expires in 10 days.
-			pp.SetExpires(UTCNow().AddDate(0, 0, 10))
-		}
 
-		formValues.Set("Policy", base64.StdEncoding.EncodeToString([]byte(pp.String())))
-		formValues.Set("Success_action_status", tt.SuccessActionStatus)
-		policyBytes, err := base64.StdEncoding.DecodeString(base64.StdEncoding.EncodeToString([]byte(pp.String())))
-		if err != nil {
-			t.Fatal(err)
-		}
+	// Run tests
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.expired {
+				// Expired already.
+				pp.SetExpires(UTCNow().AddDate(0, 0, -10))
+			} else {
+				// Expires in 10 days.
+				pp.SetExpires(UTCNow().AddDate(0, 0, 10))
+			}
 
-		postPolicyForm, err := parsePostPolicyForm(bytes.NewReader(policyBytes))
-		if err != nil {
-			t.Fatal(err)
-		}
+			tt.fv.Set("Policy", base64.StdEncoding.EncodeToString([]byte(pp.String())))
 
-		err = checkPostPolicy(formValues, postPolicyForm)
-		if err != nil && tt.expectedErr != nil && err.Error() != tt.expectedErr.Error() {
-			t.Fatalf("Test %d:, Expected %s, got %s", i+1, tt.expectedErr.Error(), err.Error())
-		}
+			policyBytes, err := base64.StdEncoding.DecodeString(base64.StdEncoding.EncodeToString([]byte(pp.String())))
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			postPolicyForm, err := parsePostPolicyForm(bytes.NewReader(policyBytes))
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			errStr := ""
+			err = checkPostPolicy(tt.fv.Header, postPolicyForm)
+			if err != nil {
+				errStr = err.Error()
+			}
+			if errStr != tt.wantErr {
+				t.Errorf("test: '%s', want error: '%s', got error: '%s'", tt.name, tt.wantErr, errStr)
+			}
+		})
 	}
 }

cmd/server-main.go

@@ -31,6 +31,7 @@ import (
 	"os/signal"
 	"path/filepath"
 	"runtime"
+	"slices"
 	"strings"
 	"syscall"
 	"time"
@@ -53,7 +54,6 @@ import (
 	"github.com/minio/minio/internal/logger"
 	"github.com/minio/pkg/v3/certs"
 	"github.com/minio/pkg/v3/env"
-	"golang.org/x/exp/slices"
 	"gopkg.in/yaml.v2"
 )
 
@@ -421,6 +421,7 @@ func serverHandleCmdArgs(ctxt serverCtxt) {
 		Interface:   ctxt.Interface,
 		SendBufSize: ctxt.SendBufSize,
 		RecvBufSize: ctxt.RecvBufSize,
+		IdleTimeout: ctxt.IdleTimeout,
 	}
 
 	// allow transport to be HTTP/1.1 for proxying.
@@ -878,6 +879,8 @@ func serverMain(ctx *cli.Context) {
 			UseHandler(setCriticalErrorHandler(corsHandler(handler))).
 			UseTLSConfig(newTLSConfig(getCert)).
 			UseIdleTimeout(globalServerCtxt.IdleTimeout).
+			UseReadTimeout(globalServerCtxt.IdleTimeout).
+			UseWriteTimeout(globalServerCtxt.IdleTimeout).
 			UseReadHeaderTimeout(globalServerCtxt.ReadHeaderTimeout).
 			UseBaseContext(GlobalContext).
 			UseCustomLogger(log.New(io.Discard, "", 0)). // Turn-off random logging by Go stdlib

cmd/sftp-server-driver.go

@@ -23,6 +23,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"net/http"
 	"os"
 	"path"
 	"strings"
@@ -45,6 +46,7 @@ const ftpMaxWriteOffset = 100 << 20
 type sftpDriver struct {
 	permissions *ssh.Permissions
 	endpoint    string
+	remoteIP    string
 }
 
 //msgp:ignore sftpMetrics
@@ -89,8 +91,12 @@ func (m *sftpMetrics) log(s *sftp.Request, user string) func(sz int64, err error
 // - sftp.Filewrite
 // - sftp.Filelist
 // - sftp.Filecmd
-func NewSFTPDriver(perms *ssh.Permissions) sftp.Handlers {
-	handler := &sftpDriver{endpoint: fmt.Sprintf("127.0.0.1:%s", globalMinioPort), permissions: perms}
+func NewSFTPDriver(perms *ssh.Permissions, remoteIP string) sftp.Handlers {
+	handler := &sftpDriver{
+		endpoint:    fmt.Sprintf("127.0.0.1:%s", globalMinioPort),
+		permissions: perms,
+		remoteIP:    remoteIP,
+	}
 	return sftp.Handlers{
 		FileGet:  handler,
 		FilePut:  handler,
@@ -99,16 +105,31 @@ func NewSFTPDriver(perms *ssh.Permissions) sftp.Handlers {
 	}
 }
 
+type forwardForTransport struct {
+	tr  http.RoundTripper
+	fwd string
+}
+
+func (f forwardForTransport) RoundTrip(r *http.Request) (*http.Response, error) {
+	r.Header.Set("X-Forwarded-For", f.fwd)
+	return f.tr.RoundTrip(r)
+}
+
 func (f *sftpDriver) getMinIOClient() (*minio.Client, error) {
 	mcreds := credentials.NewStaticV4(
 		f.permissions.CriticalOptions["AccessKey"],
 		f.permissions.CriticalOptions["SecretKey"],
 		f.permissions.CriticalOptions["SessionToken"],
 	)
+	// Set X-Forwarded-For on all requests.
+	tr := http.RoundTripper(globalRemoteFTPClientTransport)
+	if f.remoteIP != "" {
+		tr = forwardForTransport{tr: tr, fwd: f.remoteIP}
+	}
 	return minio.New(f.endpoint, &minio.Options{
 		Creds:     mcreds,
 		Secure:    globalIsTLS,
-		Transport: globalRemoteFTPClientTransport,
+		Transport: tr,
 	})
 }
 

cmd/sftp-server.go

@@ -488,7 +488,12 @@ func startSFTPServer(args []string) {
 	sshConfig.AddHostKey(private)
 
 	handleSFTPSession := func(channel ssh.Channel, sconn *ssh.ServerConn) {
-		server := sftp.NewRequestServer(channel, NewSFTPDriver(sconn.Permissions), sftp.WithRSAllocator())
+		var remoteIP string
+
+		if host, _, err := net.SplitHostPort(sconn.RemoteAddr().String()); err == nil {
+			remoteIP = host
+		}
+		server := sftp.NewRequestServer(channel, NewSFTPDriver(sconn.Permissions, remoteIP), sftp.WithRSAllocator())
 		defer server.Close()
 		server.Serve()
 	}

cmd/signature-v4-utils.go

@@ -23,6 +23,7 @@ import (
 	"encoding/hex"
 	"io"
 	"net/http"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -31,7 +32,6 @@ import (
 	xhttp "github.com/minio/minio/internal/http"
 	"github.com/minio/minio/internal/logger"
 	"github.com/minio/pkg/v3/policy"
-	"golang.org/x/exp/slices"
 )
 
 // http Header "x-amz-content-sha256" == "UNSIGNED-PAYLOAD" indicates that the

cmd/signature-v4.go

@@ -60,7 +60,7 @@ const (
 // getCanonicalHeaders generate a list of request headers with their values
 func getCanonicalHeaders(signedHeaders http.Header) string {
 	var headers []string
-	vals := make(http.Header)
+	vals := make(http.Header, len(signedHeaders))
 	for k, vv := range signedHeaders {
 		k = strings.ToLower(k)
 		headers = append(headers, k)

cmd/storage-datatypes.go

@@ -25,6 +25,8 @@ import (
 	xioutil "github.com/minio/minio/internal/ioutil"
 )
 
+//msgp:clearomitted
+
 //go:generate msgp -file=$GOFILE
 
 // DeleteOptions represents the disk level delete options available for the APIs

cmd/storage-datatypes_gen.go

@@ -746,6 +746,8 @@ func (z *DeleteOptions) DecodeMsg(dc *msgp.Reader) (err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, err = dc.ReadMapKeyPtr()
@@ -801,6 +803,7 @@ func (z *DeleteOptions) DecodeMsg(dc *msgp.Reader) (err error) {
 				err = msgp.WrapError(err, "OldDataDir")
 				return
 			}
+			zb0001Mask |= 0x1
 		default:
 			err = dc.Skip()
 			if err != nil {
@@ -809,6 +812,11 @@ func (z *DeleteOptions) DecodeMsg(dc *msgp.Reader) (err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.OldDataDir = ""
+	}
+
 	return
 }
 
@@ -827,61 +835,62 @@ func (z *DeleteOptions) EncodeMsg(en *msgp.Writer) (err error) {
 	if err != nil {
 		return
 	}
-	if zb0001Len == 0 {
-		return
-	}
-	// write "BaseOptions"
-	err = en.Append(0xab, 0x42, 0x61, 0x73, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73)
-	if err != nil {
-		return
-	}
-	// map header, size 0
-	_ = z.BaseOptions
-	err = en.Append(0x80)
-	if err != nil {
-		return
-	}
-	// write "r"
-	err = en.Append(0xa1, 0x72)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.Recursive)
-	if err != nil {
-		err = msgp.WrapError(err, "Recursive")
-		return
-	}
-	// write "i"
-	err = en.Append(0xa1, 0x69)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.Immediate)
-	if err != nil {
-		err = msgp.WrapError(err, "Immediate")
-		return
-	}
-	// write "u"
-	err = en.Append(0xa1, 0x75)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.UndoWrite)
-	if err != nil {
-		err = msgp.WrapError(err, "UndoWrite")
-		return
-	}
-	if (zb0001Mask & 0x10) == 0 { // if not omitted
-		// write "o"
-		err = en.Append(0xa1, 0x6f)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// write "BaseOptions"
+		err = en.Append(0xab, 0x42, 0x61, 0x73, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73)
 		if err != nil {
 			return
 		}
-		err = en.WriteString(z.OldDataDir)
+		// map header, size 0
+		_ = z.BaseOptions
+		err = en.Append(0x80)
 		if err != nil {
-			err = msgp.WrapError(err, "OldDataDir")
 			return
 		}
+		// write "r"
+		err = en.Append(0xa1, 0x72)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.Recursive)
+		if err != nil {
+			err = msgp.WrapError(err, "Recursive")
+			return
+		}
+		// write "i"
+		err = en.Append(0xa1, 0x69)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.Immediate)
+		if err != nil {
+			err = msgp.WrapError(err, "Immediate")
+			return
+		}
+		// write "u"
+		err = en.Append(0xa1, 0x75)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.UndoWrite)
+		if err != nil {
+			err = msgp.WrapError(err, "UndoWrite")
+			return
+		}
+		if (zb0001Mask & 0x10) == 0 { // if not omitted
+			// write "o"
+			err = en.Append(0xa1, 0x6f)
+			if err != nil {
+				return
+			}
+			err = en.WriteString(z.OldDataDir)
+			if err != nil {
+				err = msgp.WrapError(err, "OldDataDir")
+				return
+			}
+		}
 	}
 	return
 }
@@ -899,27 +908,28 @@ func (z *DeleteOptions) MarshalMsg(b []byte) (o []byte, err error) {
 	}
 	// variable map header, size zb0001Len
 	o = append(o, 0x80|uint8(zb0001Len))
-	if zb0001Len == 0 {
-		return
-	}
-	// string "BaseOptions"
-	o = append(o, 0xab, 0x42, 0x61, 0x73, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73)
-	// map header, size 0
-	_ = z.BaseOptions
-	o = append(o, 0x80)
-	// string "r"
-	o = append(o, 0xa1, 0x72)
-	o = msgp.AppendBool(o, z.Recursive)
-	// string "i"
-	o = append(o, 0xa1, 0x69)
-	o = msgp.AppendBool(o, z.Immediate)
-	// string "u"
-	o = append(o, 0xa1, 0x75)
-	o = msgp.AppendBool(o, z.UndoWrite)
-	if (zb0001Mask & 0x10) == 0 { // if not omitted
-		// string "o"
-		o = append(o, 0xa1, 0x6f)
-		o = msgp.AppendString(o, z.OldDataDir)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// string "BaseOptions"
+		o = append(o, 0xab, 0x42, 0x61, 0x73, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73)
+		// map header, size 0
+		_ = z.BaseOptions
+		o = append(o, 0x80)
+		// string "r"
+		o = append(o, 0xa1, 0x72)
+		o = msgp.AppendBool(o, z.Recursive)
+		// string "i"
+		o = append(o, 0xa1, 0x69)
+		o = msgp.AppendBool(o, z.Immediate)
+		// string "u"
+		o = append(o, 0xa1, 0x75)
+		o = msgp.AppendBool(o, z.UndoWrite)
+		if (zb0001Mask & 0x10) == 0 { // if not omitted
+			// string "o"
+			o = append(o, 0xa1, 0x6f)
+			o = msgp.AppendString(o, z.OldDataDir)
+		}
 	}
 	return
 }
@@ -934,6 +944,8 @@ func (z *DeleteOptions) UnmarshalMsg(bts []byte) (o []byte, err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, bts, err = msgp.ReadMapKeyZC(bts)
@@ -989,6 +1001,7 @@ func (z *DeleteOptions) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				err = msgp.WrapError(err, "OldDataDir")
 				return
 			}
+			zb0001Mask |= 0x1
 		default:
 			bts, err = msgp.Skip(bts)
 			if err != nil {
@@ -997,6 +1010,11 @@ func (z *DeleteOptions) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.OldDataDir = ""
+	}
+
 	o = bts
 	return
 }
@@ -2453,6 +2471,9 @@ func (z *FileInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 			err = msgp.WrapError(err, "Data")
 			return
 		}
+		if z.Data == nil {
+			z.Data = make([]byte, 0)
+		}
 	}
 	z.NumVersions, err = dc.ReadInt()
 	if err != nil {
@@ -2487,6 +2508,9 @@ func (z *FileInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 			err = msgp.WrapError(err, "Checksum")
 			return
 		}
+		if z.Checksum == nil {
+			z.Checksum = make([]byte, 0)
+		}
 	}
 	z.Versioned, err = dc.ReadBool()
 	if err != nil {
@@ -2907,6 +2931,9 @@ func (z *FileInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			err = msgp.WrapError(err, "Data")
 			return
 		}
+		if z.Data == nil {
+			z.Data = make([]byte, 0)
+		}
 	}
 	z.NumVersions, bts, err = msgp.ReadIntBytes(bts)
 	if err != nil {
@@ -2937,6 +2964,9 @@ func (z *FileInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			err = msgp.WrapError(err, "Checksum")
 			return
 		}
+		if z.Checksum == nil {
+			z.Checksum = make([]byte, 0)
+		}
 	}
 	z.Versioned, bts, err = msgp.ReadBoolBytes(bts)
 	if err != nil {
@@ -3961,6 +3991,9 @@ func (z *RawFileInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 					err = msgp.WrapError(err, "Buf")
 					return
 				}
+				if z.Buf == nil {
+					z.Buf = make([]byte, 0)
+				}
 			}
 		default:
 			err = dc.Skip()
@@ -4038,6 +4071,9 @@ func (z *RawFileInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 					err = msgp.WrapError(err, "Buf")
 					return
 				}
+				if z.Buf == nil {
+					z.Buf = make([]byte, 0)
+				}
 			}
 		default:
 			bts, err = msgp.Skip(bts)
@@ -4220,6 +4256,8 @@ func (z *ReadMultipleReq) DecodeMsg(dc *msgp.Reader) (err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, err = dc.ReadMapKeyPtr()
@@ -4240,6 +4278,7 @@ func (z *ReadMultipleReq) DecodeMsg(dc *msgp.Reader) (err error) {
 				err = msgp.WrapError(err, "Prefix")
 				return
 			}
+			zb0001Mask |= 0x1
 		case "fl":
 			var zb0002 uint32
 			zb0002, err = dc.ReadArrayHeader()
@@ -4291,6 +4330,11 @@ func (z *ReadMultipleReq) DecodeMsg(dc *msgp.Reader) (err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.Prefix = ""
+	}
+
 	return
 }
 
@@ -4309,87 +4353,88 @@ func (z *ReadMultipleReq) EncodeMsg(en *msgp.Writer) (err error) {
 	if err != nil {
 		return
 	}
-	if zb0001Len == 0 {
-		return
-	}
-	// write "bk"
-	err = en.Append(0xa2, 0x62, 0x6b)
-	if err != nil {
-		return
-	}
-	err = en.WriteString(z.Bucket)
-	if err != nil {
-		err = msgp.WrapError(err, "Bucket")
-		return
-	}
-	if (zb0001Mask & 0x2) == 0 { // if not omitted
-		// write "pr"
-		err = en.Append(0xa2, 0x70, 0x72)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// write "bk"
+		err = en.Append(0xa2, 0x62, 0x6b)
 		if err != nil {
 			return
 		}
-		err = en.WriteString(z.Prefix)
+		err = en.WriteString(z.Bucket)
 		if err != nil {
-			err = msgp.WrapError(err, "Prefix")
+			err = msgp.WrapError(err, "Bucket")
 			return
 		}
-	}
-	// write "fl"
-	err = en.Append(0xa2, 0x66, 0x6c)
-	if err != nil {
-		return
-	}
-	err = en.WriteArrayHeader(uint32(len(z.Files)))
-	if err != nil {
-		err = msgp.WrapError(err, "Files")
-		return
-	}
-	for za0001 := range z.Files {
-		err = en.WriteString(z.Files[za0001])
+		if (zb0001Mask & 0x2) == 0 { // if not omitted
+			// write "pr"
+			err = en.Append(0xa2, 0x70, 0x72)
+			if err != nil {
+				return
+			}
+			err = en.WriteString(z.Prefix)
+			if err != nil {
+				err = msgp.WrapError(err, "Prefix")
+				return
+			}
+		}
+		// write "fl"
+		err = en.Append(0xa2, 0x66, 0x6c)
 		if err != nil {
-			err = msgp.WrapError(err, "Files", za0001)
 			return
 		}
-	}
-	// write "ms"
-	err = en.Append(0xa2, 0x6d, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteInt64(z.MaxSize)
-	if err != nil {
-		err = msgp.WrapError(err, "MaxSize")
-		return
-	}
-	// write "mo"
-	err = en.Append(0xa2, 0x6d, 0x6f)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.MetadataOnly)
-	if err != nil {
-		err = msgp.WrapError(err, "MetadataOnly")
-		return
-	}
-	// write "ab"
-	err = en.Append(0xa2, 0x61, 0x62)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.AbortOn404)
-	if err != nil {
-		err = msgp.WrapError(err, "AbortOn404")
-		return
-	}
-	// write "mr"
-	err = en.Append(0xa2, 0x6d, 0x72)
-	if err != nil {
-		return
-	}
-	err = en.WriteInt(z.MaxResults)
-	if err != nil {
-		err = msgp.WrapError(err, "MaxResults")
-		return
+		err = en.WriteArrayHeader(uint32(len(z.Files)))
+		if err != nil {
+			err = msgp.WrapError(err, "Files")
+			return
+		}
+		for za0001 := range z.Files {
+			err = en.WriteString(z.Files[za0001])
+			if err != nil {
+				err = msgp.WrapError(err, "Files", za0001)
+				return
+			}
+		}
+		// write "ms"
+		err = en.Append(0xa2, 0x6d, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteInt64(z.MaxSize)
+		if err != nil {
+			err = msgp.WrapError(err, "MaxSize")
+			return
+		}
+		// write "mo"
+		err = en.Append(0xa2, 0x6d, 0x6f)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.MetadataOnly)
+		if err != nil {
+			err = msgp.WrapError(err, "MetadataOnly")
+			return
+		}
+		// write "ab"
+		err = en.Append(0xa2, 0x61, 0x62)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.AbortOn404)
+		if err != nil {
+			err = msgp.WrapError(err, "AbortOn404")
+			return
+		}
+		// write "mr"
+		err = en.Append(0xa2, 0x6d, 0x72)
+		if err != nil {
+			return
+		}
+		err = en.WriteInt(z.MaxResults)
+		if err != nil {
+			err = msgp.WrapError(err, "MaxResults")
+			return
+		}
 	}
 	return
 }
@@ -4407,35 +4452,36 @@ func (z *ReadMultipleReq) MarshalMsg(b []byte) (o []byte, err error) {
 	}
 	// variable map header, size zb0001Len
 	o = append(o, 0x80|uint8(zb0001Len))
-	if zb0001Len == 0 {
-		return
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// string "bk"
+		o = append(o, 0xa2, 0x62, 0x6b)
+		o = msgp.AppendString(o, z.Bucket)
+		if (zb0001Mask & 0x2) == 0 { // if not omitted
+			// string "pr"
+			o = append(o, 0xa2, 0x70, 0x72)
+			o = msgp.AppendString(o, z.Prefix)
+		}
+		// string "fl"
+		o = append(o, 0xa2, 0x66, 0x6c)
+		o = msgp.AppendArrayHeader(o, uint32(len(z.Files)))
+		for za0001 := range z.Files {
+			o = msgp.AppendString(o, z.Files[za0001])
+		}
+		// string "ms"
+		o = append(o, 0xa2, 0x6d, 0x73)
+		o = msgp.AppendInt64(o, z.MaxSize)
+		// string "mo"
+		o = append(o, 0xa2, 0x6d, 0x6f)
+		o = msgp.AppendBool(o, z.MetadataOnly)
+		// string "ab"
+		o = append(o, 0xa2, 0x61, 0x62)
+		o = msgp.AppendBool(o, z.AbortOn404)
+		// string "mr"
+		o = append(o, 0xa2, 0x6d, 0x72)
+		o = msgp.AppendInt(o, z.MaxResults)
 	}
-	// string "bk"
-	o = append(o, 0xa2, 0x62, 0x6b)
-	o = msgp.AppendString(o, z.Bucket)
-	if (zb0001Mask & 0x2) == 0 { // if not omitted
-		// string "pr"
-		o = append(o, 0xa2, 0x70, 0x72)
-		o = msgp.AppendString(o, z.Prefix)
-	}
-	// string "fl"
-	o = append(o, 0xa2, 0x66, 0x6c)
-	o = msgp.AppendArrayHeader(o, uint32(len(z.Files)))
-	for za0001 := range z.Files {
-		o = msgp.AppendString(o, z.Files[za0001])
-	}
-	// string "ms"
-	o = append(o, 0xa2, 0x6d, 0x73)
-	o = msgp.AppendInt64(o, z.MaxSize)
-	// string "mo"
-	o = append(o, 0xa2, 0x6d, 0x6f)
-	o = msgp.AppendBool(o, z.MetadataOnly)
-	// string "ab"
-	o = append(o, 0xa2, 0x61, 0x62)
-	o = msgp.AppendBool(o, z.AbortOn404)
-	// string "mr"
-	o = append(o, 0xa2, 0x6d, 0x72)
-	o = msgp.AppendInt(o, z.MaxResults)
 	return
 }
 
@@ -4449,6 +4495,8 @@ func (z *ReadMultipleReq) UnmarshalMsg(bts []byte) (o []byte, err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 1 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, bts, err = msgp.ReadMapKeyZC(bts)
@@ -4469,6 +4517,7 @@ func (z *ReadMultipleReq) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				err = msgp.WrapError(err, "Prefix")
 				return
 			}
+			zb0001Mask |= 0x1
 		case "fl":
 			var zb0002 uint32
 			zb0002, bts, err = msgp.ReadArrayHeaderBytes(bts)
@@ -4520,6 +4569,11 @@ func (z *ReadMultipleReq) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if (zb0001Mask & 0x1) == 0 {
+		z.Prefix = ""
+	}
+
 	o = bts
 	return
 }
@@ -4544,6 +4598,8 @@ func (z *ReadMultipleResp) DecodeMsg(dc *msgp.Reader) (err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 2 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, err = dc.ReadMapKeyPtr()
@@ -4564,6 +4620,7 @@ func (z *ReadMultipleResp) DecodeMsg(dc *msgp.Reader) (err error) {
 				err = msgp.WrapError(err, "Prefix")
 				return
 			}
+			zb0001Mask |= 0x1
 		case "fl":
 			z.File, err = dc.ReadString()
 			if err != nil {
@@ -4582,6 +4639,7 @@ func (z *ReadMultipleResp) DecodeMsg(dc *msgp.Reader) (err error) {
 				err = msgp.WrapError(err, "Error")
 				return
 			}
+			zb0001Mask |= 0x2
 		case "d":
 			z.Data, err = dc.ReadBytes(z.Data)
 			if err != nil {
@@ -4602,6 +4660,15 @@ func (z *ReadMultipleResp) DecodeMsg(dc *msgp.Reader) (err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if zb0001Mask != 0x3 {
+		if (zb0001Mask & 0x1) == 0 {
+			z.Prefix = ""
+		}
+		if (zb0001Mask & 0x2) == 0 {
+			z.Error = ""
+		}
+	}
 	return
 }
 
@@ -4624,82 +4691,83 @@ func (z *ReadMultipleResp) EncodeMsg(en *msgp.Writer) (err error) {
 	if err != nil {
 		return
 	}
-	if zb0001Len == 0 {
-		return
-	}
-	// write "bk"
-	err = en.Append(0xa2, 0x62, 0x6b)
-	if err != nil {
-		return
-	}
-	err = en.WriteString(z.Bucket)
-	if err != nil {
-		err = msgp.WrapError(err, "Bucket")
-		return
-	}
-	if (zb0001Mask & 0x2) == 0 { // if not omitted
-		// write "pr"
-		err = en.Append(0xa2, 0x70, 0x72)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// write "bk"
+		err = en.Append(0xa2, 0x62, 0x6b)
 		if err != nil {
 			return
 		}
-		err = en.WriteString(z.Prefix)
+		err = en.WriteString(z.Bucket)
 		if err != nil {
-			err = msgp.WrapError(err, "Prefix")
+			err = msgp.WrapError(err, "Bucket")
 			return
 		}
-	}
-	// write "fl"
-	err = en.Append(0xa2, 0x66, 0x6c)
-	if err != nil {
-		return
-	}
-	err = en.WriteString(z.File)
-	if err != nil {
-		err = msgp.WrapError(err, "File")
-		return
-	}
-	// write "ex"
-	err = en.Append(0xa2, 0x65, 0x78)
-	if err != nil {
-		return
-	}
-	err = en.WriteBool(z.Exists)
-	if err != nil {
-		err = msgp.WrapError(err, "Exists")
-		return
-	}
-	if (zb0001Mask & 0x10) == 0 { // if not omitted
-		// write "er"
-		err = en.Append(0xa2, 0x65, 0x72)
+		if (zb0001Mask & 0x2) == 0 { // if not omitted
+			// write "pr"
+			err = en.Append(0xa2, 0x70, 0x72)
+			if err != nil {
+				return
+			}
+			err = en.WriteString(z.Prefix)
+			if err != nil {
+				err = msgp.WrapError(err, "Prefix")
+				return
+			}
+		}
+		// write "fl"
+		err = en.Append(0xa2, 0x66, 0x6c)
 		if err != nil {
 			return
 		}
-		err = en.WriteString(z.Error)
+		err = en.WriteString(z.File)
 		if err != nil {
-			err = msgp.WrapError(err, "Error")
+			err = msgp.WrapError(err, "File")
+			return
+		}
+		// write "ex"
+		err = en.Append(0xa2, 0x65, 0x78)
+		if err != nil {
+			return
+		}
+		err = en.WriteBool(z.Exists)
+		if err != nil {
+			err = msgp.WrapError(err, "Exists")
+			return
+		}
+		if (zb0001Mask & 0x10) == 0 { // if not omitted
+			// write "er"
+			err = en.Append(0xa2, 0x65, 0x72)
+			if err != nil {
+				return
+			}
+			err = en.WriteString(z.Error)
+			if err != nil {
+				err = msgp.WrapError(err, "Error")
+				return
+			}
+		}
+		// write "d"
+		err = en.Append(0xa1, 0x64)
+		if err != nil {
+			return
+		}
+		err = en.WriteBytes(z.Data)
+		if err != nil {
+			err = msgp.WrapError(err, "Data")
+			return
+		}
+		// write "m"
+		err = en.Append(0xa1, 0x6d)
+		if err != nil {
+			return
+		}
+		err = en.WriteTime(z.Modtime)
+		if err != nil {
+			err = msgp.WrapError(err, "Modtime")
 			return
 		}
-	}
-	// write "d"
-	err = en.Append(0xa1, 0x64)
-	if err != nil {
-		return
-	}
-	err = en.WriteBytes(z.Data)
-	if err != nil {
-		err = msgp.WrapError(err, "Data")
-		return
-	}
-	// write "m"
-	err = en.Append(0xa1, 0x6d)
-	if err != nil {
-		return
-	}
-	err = en.WriteTime(z.Modtime)
-	if err != nil {
-		err = msgp.WrapError(err, "Modtime")
-		return
 	}
 	return
 }
@@ -4721,34 +4789,35 @@ func (z *ReadMultipleResp) MarshalMsg(b []byte) (o []byte, err error) {
 	}
 	// variable map header, size zb0001Len
 	o = append(o, 0x80|uint8(zb0001Len))
-	if zb0001Len == 0 {
-		return
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// string "bk"
+		o = append(o, 0xa2, 0x62, 0x6b)
+		o = msgp.AppendString(o, z.Bucket)
+		if (zb0001Mask & 0x2) == 0 { // if not omitted
+			// string "pr"
+			o = append(o, 0xa2, 0x70, 0x72)
+			o = msgp.AppendString(o, z.Prefix)
+		}
+		// string "fl"
+		o = append(o, 0xa2, 0x66, 0x6c)
+		o = msgp.AppendString(o, z.File)
+		// string "ex"
+		o = append(o, 0xa2, 0x65, 0x78)
+		o = msgp.AppendBool(o, z.Exists)
+		if (zb0001Mask & 0x10) == 0 { // if not omitted
+			// string "er"
+			o = append(o, 0xa2, 0x65, 0x72)
+			o = msgp.AppendString(o, z.Error)
+		}
+		// string "d"
+		o = append(o, 0xa1, 0x64)
+		o = msgp.AppendBytes(o, z.Data)
+		// string "m"
+		o = append(o, 0xa1, 0x6d)
+		o = msgp.AppendTime(o, z.Modtime)
 	}
-	// string "bk"
-	o = append(o, 0xa2, 0x62, 0x6b)
-	o = msgp.AppendString(o, z.Bucket)
-	if (zb0001Mask & 0x2) == 0 { // if not omitted
-		// string "pr"
-		o = append(o, 0xa2, 0x70, 0x72)
-		o = msgp.AppendString(o, z.Prefix)
-	}
-	// string "fl"
-	o = append(o, 0xa2, 0x66, 0x6c)
-	o = msgp.AppendString(o, z.File)
-	// string "ex"
-	o = append(o, 0xa2, 0x65, 0x78)
-	o = msgp.AppendBool(o, z.Exists)
-	if (zb0001Mask & 0x10) == 0 { // if not omitted
-		// string "er"
-		o = append(o, 0xa2, 0x65, 0x72)
-		o = msgp.AppendString(o, z.Error)
-	}
-	// string "d"
-	o = append(o, 0xa1, 0x64)
-	o = msgp.AppendBytes(o, z.Data)
-	// string "m"
-	o = append(o, 0xa1, 0x6d)
-	o = msgp.AppendTime(o, z.Modtime)
 	return
 }
 
@@ -4762,6 +4831,8 @@ func (z *ReadMultipleResp) UnmarshalMsg(bts []byte) (o []byte, err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 2 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, bts, err = msgp.ReadMapKeyZC(bts)
@@ -4782,6 +4853,7 @@ func (z *ReadMultipleResp) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				err = msgp.WrapError(err, "Prefix")
 				return
 			}
+			zb0001Mask |= 0x1
 		case "fl":
 			z.File, bts, err = msgp.ReadStringBytes(bts)
 			if err != nil {
@@ -4800,6 +4872,7 @@ func (z *ReadMultipleResp) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				err = msgp.WrapError(err, "Error")
 				return
 			}
+			zb0001Mask |= 0x2
 		case "d":
 			z.Data, bts, err = msgp.ReadBytesBytes(bts, z.Data)
 			if err != nil {
@@ -4820,6 +4893,15 @@ func (z *ReadMultipleResp) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if zb0001Mask != 0x3 {
+		if (zb0001Mask & 0x1) == 0 {
+			z.Prefix = ""
+		}
+		if (zb0001Mask & 0x2) == 0 {
+			z.Error = ""
+		}
+	}
 	o = bts
 	return
 }

cmd/storage-rest-client.go

@@ -464,16 +464,20 @@ func (client *storageRESTClient) WriteAll(ctx context.Context, volume string, pa
 // CheckParts - stat all file parts.
 func (client *storageRESTClient) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) (*CheckPartsResp, error) {
 	var resp *CheckPartsResp
-	resp, err := storageCheckPartsRPC.Call(ctx, client.gridConn, &CheckPartsHandlerParams{
+	st, err := storageCheckPartsRPC.Call(ctx, client.gridConn, &CheckPartsHandlerParams{
 		DiskID:   *client.diskID.Load(),
 		Volume:   volume,
 		FilePath: path,
 		FI:       fi,
 	})
 	if err != nil {
-		return nil, err
+		return nil, toStorageErr(err)
 	}
-	return resp, nil
+	err = st.Results(func(r *CheckPartsResp) error {
+		resp = r
+		return nil
+	})
+	return resp, toStorageErr(err)
 }
 
 // RenameData - rename source path to destination path atomically, metadata and data file.

cmd/storage-rest-server.go

@@ -56,7 +56,7 @@ type storageRESTServer struct {
 }
 
 var (
-	storageCheckPartsRPC       = grid.NewSingleHandler[*CheckPartsHandlerParams, *CheckPartsResp](grid.HandlerCheckParts2, func() *CheckPartsHandlerParams { return &CheckPartsHandlerParams{} }, func() *CheckPartsResp { return &CheckPartsResp{} })
+	storageCheckPartsRPC       = grid.NewStream[*CheckPartsHandlerParams, grid.NoPayload, *CheckPartsResp](grid.HandlerCheckParts3, func() *CheckPartsHandlerParams { return &CheckPartsHandlerParams{} }, nil, func() *CheckPartsResp { return &CheckPartsResp{} })
 	storageDeleteFileRPC       = grid.NewSingleHandler[*DeleteFileHandlerParams, grid.NoPayload](grid.HandlerDeleteFile, func() *DeleteFileHandlerParams { return &DeleteFileHandlerParams{} }, grid.NewNoPayload).AllowCallRequestPool(true)
 	storageDeleteVersionRPC    = grid.NewSingleHandler[*DeleteVersionHandlerParams, grid.NoPayload](grid.HandlerDeleteVersion, func() *DeleteVersionHandlerParams { return &DeleteVersionHandlerParams{} }, grid.NewNoPayload)
 	storageDiskInfoRPC         = grid.NewSingleHandler[*DiskInfoOptions, *DiskInfo](grid.HandlerDiskInfo, func() *DiskInfoOptions { return &DiskInfoOptions{} }, func() *DiskInfo { return &DiskInfo{} }).WithSharedResponse().AllowCallRequestPool(true)
@@ -456,16 +456,20 @@ func (s *storageRESTServer) UpdateMetadataHandler(p *MetadataHandlerParams) (gri
 	return grid.NewNPErr(s.getStorage().UpdateMetadata(context.Background(), volume, filePath, p.FI, p.UpdateOpts))
 }
 
-// CheckPartsHandler - check if a file metadata exists.
-func (s *storageRESTServer) CheckPartsHandler(p *CheckPartsHandlerParams) (*CheckPartsResp, *grid.RemoteErr) {
+// CheckPartsHandler - check if a file parts exists.
+func (s *storageRESTServer) CheckPartsHandler(ctx context.Context, p *CheckPartsHandlerParams, out chan<- *CheckPartsResp) *grid.RemoteErr {
 	if !s.checkID(p.DiskID) {
-		return nil, grid.NewRemoteErr(errDiskNotFound)
+		return grid.NewRemoteErr(errDiskNotFound)
 	}
 	volume := p.Volume
 	filePath := p.FilePath
 
-	resp, err := s.getStorage().CheckParts(context.Background(), volume, filePath, p.FI)
-	return resp, grid.NewRemoteErr(err)
+	resp, err := s.getStorage().CheckParts(ctx, volume, filePath, p.FI)
+	if err != nil {
+		return grid.NewRemoteErr(err)
+	}
+	out <- resp
+	return grid.NewRemoteErr(err)
 }
 
 func (s *storageRESTServer) WriteAllHandler(p *WriteAllHandlerParams) (grid.NoPayload, *grid.RemoteErr) {
@@ -1382,7 +1386,7 @@ func registerStorageRESTHandlers(router *mux.Router, endpointServerPools Endpoin
 			logger.FatalIf(storageRenameDataRPC.Register(gm, server.RenameDataHandler, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageRenameDataInlineRPC.Register(gm, server.RenameDataInlineHandler, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageDeleteFileRPC.Register(gm, server.DeleteFileHandler, endpoint.Path), "unable to register handler")
-			logger.FatalIf(storageCheckPartsRPC.Register(gm, server.CheckPartsHandler, endpoint.Path), "unable to register handler")
+			logger.FatalIf(storageCheckPartsRPC.RegisterNoInput(gm, server.CheckPartsHandler, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageReadVersionRPC.Register(gm, server.ReadVersionHandlerWS, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageWriteMetadataRPC.Register(gm, server.WriteMetadataHandler, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageUpdateMetadataRPC.Register(gm, server.UpdateMetadataHandler, endpoint.Path), "unable to register handler")

cmd/sts-handlers_test.go

@@ -24,6 +24,7 @@ import (
 	"io"
 	"os"
 	"reflect"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -34,7 +35,6 @@ import (
 	cr "github.com/minio/minio-go/v7/pkg/credentials"
 	"github.com/minio/minio-go/v7/pkg/set"
 	"github.com/minio/pkg/v3/ldap"
-	"golang.org/x/exp/slices"
 )
 
 func runAllIAMSTSTests(suite *TestSuiteIAM, c *check) {

cmd/test-utils_test.go

@@ -2247,12 +2247,12 @@ func getEndpointsLocalAddr(endpointServerPools EndpointServerPools) string {
 }
 
 // fetches a random number between range min-max.
-func getRandomRange(min, max int, seed int64) int {
+func getRandomRange(minN, maxN int, seed int64) int {
 	// special value -1 means no explicit seeding.
-	if seed != -1 {
-		rand.Seed(seed)
+	if seed == -1 {
+		return rand.New(rand.NewSource(time.Now().UnixNano())).Intn(maxN-minN) + minN
 	}
-	return rand.Intn(max-min) + min
+	return rand.New(rand.NewSource(seed)).Intn(maxN-minN) + minN
 }
 
 // Randomizes the order of bytes in the byte array

cmd/utils.go

@@ -411,7 +411,12 @@ func startProfiler(profilerType string) (minioProfiler, error) {
 			return nil, err
 		}
 		stop := fgprof.Start(f, fgprof.FormatPprof)
+		startedAt := time.Now()
 		prof.stopFn = func() ([]byte, error) {
+			if elapsed := time.Since(startedAt); elapsed < 100*time.Millisecond {
+				// Light hack around https://github.com/felixge/fgprof/pull/34
+				time.Sleep(100*time.Millisecond - elapsed)
+			}
 			err := stop()
 			if err != nil {
 				return nil, err

cmd/warm-backend-azure.go

@@ -26,6 +26,7 @@ import (
 	"strings"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
 	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob"
 	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blob"
@@ -59,10 +60,15 @@ func (az *warmBackendAzure) getDest(object string) string {
 	return destObj
 }
 
-func (az *warmBackendAzure) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
+func (az *warmBackendAzure) PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error) {
+	azMeta := map[string]*string{}
+	for k, v := range meta {
+		azMeta[k] = to.Ptr(v)
+	}
 	resp, err := az.clnt.UploadStream(ctx, az.Bucket, az.getDest(object), io.LimitReader(r, length), &azblob.UploadStreamOptions{
 		Concurrency: 4,
 		AccessTier:  az.tier(), // set tier if specified
+		Metadata:    azMeta,
 	})
 	if err != nil {
 		return "", azureToObjectError(err, az.Bucket, az.getDest(object))
@@ -74,6 +80,10 @@ func (az *warmBackendAzure) Put(ctx context.Context, object string, r io.Reader,
 	return remoteVersionID(vid), nil
 }
 
+func (az *warmBackendAzure) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
+	return az.PutWithMeta(ctx, object, r, length, map[string]string{})
+}
+
 func (az *warmBackendAzure) Get(ctx context.Context, object string, rv remoteVersionID, opts WarmBackendGetOpts) (r io.ReadCloser, err error) {
 	if opts.startOffset < 0 {
 		return nil, InvalidRange{}

cmd/warm-backend-gcs.go

@@ -47,16 +47,17 @@ func (gcs *warmBackendGCS) getDest(object string) string {
 	return destObj
 }
 
-// FIXME: add support for remote version ID in GCS remote tier and remove this.
-// Currently it's a no-op.
-
-func (gcs *warmBackendGCS) Put(ctx context.Context, key string, data io.Reader, length int64) (remoteVersionID, error) {
+func (gcs *warmBackendGCS) PutWithMeta(ctx context.Context, key string, data io.Reader, length int64, meta map[string]string) (remoteVersionID, error) {
 	object := gcs.client.Bucket(gcs.Bucket).Object(gcs.getDest(key))
-	// TODO: set storage class
 	w := object.NewWriter(ctx)
 	if gcs.StorageClass != "" {
 		w.ObjectAttrs.StorageClass = gcs.StorageClass
 	}
+	w.ObjectAttrs.Metadata = meta
+	if _, err := xioutil.Copy(w, data); err != nil {
+		return "", gcsToObjectError(err, gcs.Bucket, key)
+	}
+
 	if _, err := xioutil.Copy(w, data); err != nil {
 		return "", gcsToObjectError(err, gcs.Bucket, key)
 	}
@@ -64,6 +65,12 @@ func (gcs *warmBackendGCS) Put(ctx context.Context, key string, data io.Reader,
 	return "", w.Close()
 }
 
+// FIXME: add support for remote version ID in GCS remote tier and remove this.
+// Currently it's a no-op.
+func (gcs *warmBackendGCS) Put(ctx context.Context, key string, data io.Reader, length int64) (remoteVersionID, error) {
+	return gcs.PutWithMeta(ctx, key, data, length, map[string]string{})
+}
+
 func (gcs *warmBackendGCS) Get(ctx context.Context, key string, rv remoteVersionID, opts WarmBackendGetOpts) (r io.ReadCloser, err error) {
 	// GCS storage decompresses a gzipped object by default and returns the data.
 	// Refer to https://cloud.google.com/storage/docs/transcoding#decompressive_transcoding

cmd/warm-backend-minio.go

@@ -78,7 +78,7 @@ func optimalPartSize(objectSize int64) (partSize int64, err error) {
 	return partSize, nil
 }
 
-func (m *warmBackendMinIO) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
+func (m *warmBackendMinIO) PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error) {
 	partSize, err := optimalPartSize(length)
 	if err != nil {
 		return remoteVersionID(""), err
@@ -87,10 +87,15 @@ func (m *warmBackendMinIO) Put(ctx context.Context, object string, r io.Reader,
 		StorageClass:         m.StorageClass,
 		PartSize:             uint64(partSize),
 		DisableContentSha256: true,
+		UserMetadata:         meta,
 	})
 	return remoteVersionID(res.VersionID), m.ToObjectError(err, object)
 }
 
+func (m *warmBackendMinIO) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
+	return m.PutWithMeta(ctx, object, r, length, map[string]string{})
+}
+
 func newWarmBackendMinIO(conf madmin.TierMinIO, tier string) (*warmBackendMinIO, error) {
 	// Validation of credentials
 	if conf.AccessKey == "" || conf.SecretKey == "" {

cmd/warm-backend-s3.go

@@ -56,14 +56,19 @@ func (s3 *warmBackendS3) getDest(object string) string {
 	return destObj
 }
 
-func (s3 *warmBackendS3) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
+func (s3 *warmBackendS3) PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error) {
 	res, err := s3.client.PutObject(ctx, s3.Bucket, s3.getDest(object), r, length, minio.PutObjectOptions{
 		SendContentMd5: true,
 		StorageClass:   s3.StorageClass,
+		UserMetadata:   meta,
 	})
 	return remoteVersionID(res.VersionID), s3.ToObjectError(err, object)
 }
 
+func (s3 *warmBackendS3) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
+	return s3.PutWithMeta(ctx, object, r, length, map[string]string{})
+}
+
 func (s3 *warmBackendS3) Get(ctx context.Context, object string, rv remoteVersionID, opts WarmBackendGetOpts) (io.ReadCloser, error) {
 	gopts := minio.GetObjectOptions{}
 

cmd/warm-backend.go

@@ -38,6 +38,7 @@ type WarmBackendGetOpts struct {
 // WarmBackend provides interface to be implemented by remote tier backends
 type WarmBackend interface {
 	Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error)
+	PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error)
 	Get(ctx context.Context, object string, rv remoteVersionID, opts WarmBackendGetOpts) (io.ReadCloser, error)
 	Remove(ctx context.Context, object string, rv remoteVersionID) error
 	InUse(ctx context.Context) (bool, error)

cmd/xl-storage-disk-id-check.go

@@ -509,9 +509,7 @@ func (p *xlStorageDiskIDCheck) CheckParts(ctx context.Context, volume string, pa
 	}
 	defer done(0, &err)
 
-	return xioutil.WithDeadline[*CheckPartsResp](ctx, globalDriveConfig.GetMaxTimeout(), func(ctx context.Context) (res *CheckPartsResp, err error) {
-		return p.storage.CheckParts(ctx, volume, path, fi)
-	})
+	return p.storage.CheckParts(ctx, volume, path, fi)
 }
 
 func (p *xlStorageDiskIDCheck) DeleteBulk(ctx context.Context, volume string, paths ...string) (err error) {

cmd/xl-storage-format-v1.go

@@ -55,6 +55,8 @@ func isXLMetaErasureInfoValid(data, parity int) bool {
 	return ((data >= parity) && (data > 0) && (parity >= 0))
 }
 
+//msgp:clearomitted
+
 //go:generate msgp -file=$GOFILE -unexported
 
 // A xlMetaV1Object represents `xl.meta` metadata header.

cmd/xl-storage-format-v1_gen.go

@@ -561,6 +561,8 @@ func (z *ObjectPartInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 3 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, err = dc.ReadMapKeyPtr()
@@ -605,6 +607,7 @@ func (z *ObjectPartInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 				err = msgp.WrapError(err, "Index")
 				return
 			}
+			zb0001Mask |= 0x1
 		case "crc":
 			var zb0002 uint32
 			zb0002, err = dc.ReadMapHeader()
@@ -635,12 +638,14 @@ func (z *ObjectPartInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 				}
 				z.Checksums[za0001] = za0002
 			}
+			zb0001Mask |= 0x2
 		case "err":
 			z.Error, err = dc.ReadString()
 			if err != nil {
 				err = msgp.WrapError(err, "Error")
 				return
 			}
+			zb0001Mask |= 0x4
 		default:
 			err = dc.Skip()
 			if err != nil {
@@ -649,6 +654,18 @@ func (z *ObjectPartInfo) DecodeMsg(dc *msgp.Reader) (err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if zb0001Mask != 0x7 {
+		if (zb0001Mask & 0x1) == 0 {
+			z.Index = nil
+		}
+		if (zb0001Mask & 0x2) == 0 {
+			z.Checksums = nil
+		}
+		if (zb0001Mask & 0x4) == 0 {
+			z.Error = ""
+		}
+	}
 	return
 }
 
@@ -675,105 +692,106 @@ func (z *ObjectPartInfo) EncodeMsg(en *msgp.Writer) (err error) {
 	if err != nil {
 		return
 	}
-	if zb0001Len == 0 {
-		return
-	}
-	// write "e"
-	err = en.Append(0xa1, 0x65)
-	if err != nil {
-		return
-	}
-	err = en.WriteString(z.ETag)
-	if err != nil {
-		err = msgp.WrapError(err, "ETag")
-		return
-	}
-	// write "n"
-	err = en.Append(0xa1, 0x6e)
-	if err != nil {
-		return
-	}
-	err = en.WriteInt(z.Number)
-	if err != nil {
-		err = msgp.WrapError(err, "Number")
-		return
-	}
-	// write "s"
-	err = en.Append(0xa1, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteInt64(z.Size)
-	if err != nil {
-		err = msgp.WrapError(err, "Size")
-		return
-	}
-	// write "as"
-	err = en.Append(0xa2, 0x61, 0x73)
-	if err != nil {
-		return
-	}
-	err = en.WriteInt64(z.ActualSize)
-	if err != nil {
-		err = msgp.WrapError(err, "ActualSize")
-		return
-	}
-	// write "mt"
-	err = en.Append(0xa2, 0x6d, 0x74)
-	if err != nil {
-		return
-	}
-	err = en.WriteTime(z.ModTime)
-	if err != nil {
-		err = msgp.WrapError(err, "ModTime")
-		return
-	}
-	if (zb0001Mask & 0x20) == 0 { // if not omitted
-		// write "i"
-		err = en.Append(0xa1, 0x69)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// write "e"
+		err = en.Append(0xa1, 0x65)
 		if err != nil {
 			return
 		}
-		err = en.WriteBytes(z.Index)
+		err = en.WriteString(z.ETag)
 		if err != nil {
-			err = msgp.WrapError(err, "Index")
+			err = msgp.WrapError(err, "ETag")
 			return
 		}
-	}
-	if (zb0001Mask & 0x40) == 0 { // if not omitted
-		// write "crc"
-		err = en.Append(0xa3, 0x63, 0x72, 0x63)
+		// write "n"
+		err = en.Append(0xa1, 0x6e)
 		if err != nil {
 			return
 		}
-		err = en.WriteMapHeader(uint32(len(z.Checksums)))
+		err = en.WriteInt(z.Number)
 		if err != nil {
-			err = msgp.WrapError(err, "Checksums")
+			err = msgp.WrapError(err, "Number")
 			return
 		}
-		for za0001, za0002 := range z.Checksums {
-			err = en.WriteString(za0001)
+		// write "s"
+		err = en.Append(0xa1, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteInt64(z.Size)
+		if err != nil {
+			err = msgp.WrapError(err, "Size")
+			return
+		}
+		// write "as"
+		err = en.Append(0xa2, 0x61, 0x73)
+		if err != nil {
+			return
+		}
+		err = en.WriteInt64(z.ActualSize)
+		if err != nil {
+			err = msgp.WrapError(err, "ActualSize")
+			return
+		}
+		// write "mt"
+		err = en.Append(0xa2, 0x6d, 0x74)
+		if err != nil {
+			return
+		}
+		err = en.WriteTime(z.ModTime)
+		if err != nil {
+			err = msgp.WrapError(err, "ModTime")
+			return
+		}
+		if (zb0001Mask & 0x20) == 0 { // if not omitted
+			// write "i"
+			err = en.Append(0xa1, 0x69)
+			if err != nil {
+				return
+			}
+			err = en.WriteBytes(z.Index)
+			if err != nil {
+				err = msgp.WrapError(err, "Index")
+				return
+			}
+		}
+		if (zb0001Mask & 0x40) == 0 { // if not omitted
+			// write "crc"
+			err = en.Append(0xa3, 0x63, 0x72, 0x63)
+			if err != nil {
+				return
+			}
+			err = en.WriteMapHeader(uint32(len(z.Checksums)))
 			if err != nil {
 				err = msgp.WrapError(err, "Checksums")
 				return
 			}
-			err = en.WriteString(za0002)
-			if err != nil {
-				err = msgp.WrapError(err, "Checksums", za0001)
-				return
+			for za0001, za0002 := range z.Checksums {
+				err = en.WriteString(za0001)
+				if err != nil {
+					err = msgp.WrapError(err, "Checksums")
+					return
+				}
+				err = en.WriteString(za0002)
+				if err != nil {
+					err = msgp.WrapError(err, "Checksums", za0001)
+					return
+				}
 			}
 		}
-	}
-	if (zb0001Mask & 0x80) == 0 { // if not omitted
-		// write "err"
-		err = en.Append(0xa3, 0x65, 0x72, 0x72)
-		if err != nil {
-			return
-		}
-		err = en.WriteString(z.Error)
-		if err != nil {
-			err = msgp.WrapError(err, "Error")
-			return
+		if (zb0001Mask & 0x80) == 0 { // if not omitted
+			// write "err"
+			err = en.Append(0xa3, 0x65, 0x72, 0x72)
+			if err != nil {
+				return
+			}
+			err = en.WriteString(z.Error)
+			if err != nil {
+				err = msgp.WrapError(err, "Error")
+				return
+			}
 		}
 	}
 	return
@@ -800,42 +818,43 @@ func (z *ObjectPartInfo) MarshalMsg(b []byte) (o []byte, err error) {
 	}
 	// variable map header, size zb0001Len
 	o = append(o, 0x80|uint8(zb0001Len))
-	if zb0001Len == 0 {
-		return
-	}
-	// string "e"
-	o = append(o, 0xa1, 0x65)
-	o = msgp.AppendString(o, z.ETag)
-	// string "n"
-	o = append(o, 0xa1, 0x6e)
-	o = msgp.AppendInt(o, z.Number)
-	// string "s"
-	o = append(o, 0xa1, 0x73)
-	o = msgp.AppendInt64(o, z.Size)
-	// string "as"
-	o = append(o, 0xa2, 0x61, 0x73)
-	o = msgp.AppendInt64(o, z.ActualSize)
-	// string "mt"
-	o = append(o, 0xa2, 0x6d, 0x74)
-	o = msgp.AppendTime(o, z.ModTime)
-	if (zb0001Mask & 0x20) == 0 { // if not omitted
-		// string "i"
-		o = append(o, 0xa1, 0x69)
-		o = msgp.AppendBytes(o, z.Index)
-	}
-	if (zb0001Mask & 0x40) == 0 { // if not omitted
-		// string "crc"
-		o = append(o, 0xa3, 0x63, 0x72, 0x63)
-		o = msgp.AppendMapHeader(o, uint32(len(z.Checksums)))
-		for za0001, za0002 := range z.Checksums {
-			o = msgp.AppendString(o, za0001)
-			o = msgp.AppendString(o, za0002)
+
+	// skip if no fields are to be emitted
+	if zb0001Len != 0 {
+		// string "e"
+		o = append(o, 0xa1, 0x65)
+		o = msgp.AppendString(o, z.ETag)
+		// string "n"
+		o = append(o, 0xa1, 0x6e)
+		o = msgp.AppendInt(o, z.Number)
+		// string "s"
+		o = append(o, 0xa1, 0x73)
+		o = msgp.AppendInt64(o, z.Size)
+		// string "as"
+		o = append(o, 0xa2, 0x61, 0x73)
+		o = msgp.AppendInt64(o, z.ActualSize)
+		// string "mt"
+		o = append(o, 0xa2, 0x6d, 0x74)
+		o = msgp.AppendTime(o, z.ModTime)
+		if (zb0001Mask & 0x20) == 0 { // if not omitted
+			// string "i"
+			o = append(o, 0xa1, 0x69)
+			o = msgp.AppendBytes(o, z.Index)
+		}
+		if (zb0001Mask & 0x40) == 0 { // if not omitted
+			// string "crc"
+			o = append(o, 0xa3, 0x63, 0x72, 0x63)
+			o = msgp.AppendMapHeader(o, uint32(len(z.Checksums)))
+			for za0001, za0002 := range z.Checksums {
+				o = msgp.AppendString(o, za0001)
+				o = msgp.AppendString(o, za0002)
+			}
+		}
+		if (zb0001Mask & 0x80) == 0 { // if not omitted
+			// string "err"
+			o = append(o, 0xa3, 0x65, 0x72, 0x72)
+			o = msgp.AppendString(o, z.Error)
 		}
-	}
-	if (zb0001Mask & 0x80) == 0 { // if not omitted
-		// string "err"
-		o = append(o, 0xa3, 0x65, 0x72, 0x72)
-		o = msgp.AppendString(o, z.Error)
 	}
 	return
 }
@@ -850,6 +869,8 @@ func (z *ObjectPartInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 		err = msgp.WrapError(err)
 		return
 	}
+	var zb0001Mask uint8 /* 3 bits */
+	_ = zb0001Mask
 	for zb0001 > 0 {
 		zb0001--
 		field, bts, err = msgp.ReadMapKeyZC(bts)
@@ -894,6 +915,7 @@ func (z *ObjectPartInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				err = msgp.WrapError(err, "Index")
 				return
 			}
+			zb0001Mask |= 0x1
 		case "crc":
 			var zb0002 uint32
 			zb0002, bts, err = msgp.ReadMapHeaderBytes(bts)
@@ -924,12 +946,14 @@ func (z *ObjectPartInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 				}
 				z.Checksums[za0001] = za0002
 			}
+			zb0001Mask |= 0x2
 		case "err":
 			z.Error, bts, err = msgp.ReadStringBytes(bts)
 			if err != nil {
 				err = msgp.WrapError(err, "Error")
 				return
 			}
+			zb0001Mask |= 0x4
 		default:
 			bts, err = msgp.Skip(bts)
 			if err != nil {
@@ -938,6 +962,18 @@ func (z *ObjectPartInfo) UnmarshalMsg(bts []byte) (o []byte, err error) {
 			}
 		}
 	}
+	// Clear omitted fields.
+	if zb0001Mask != 0x7 {
+		if (zb0001Mask & 0x1) == 0 {
+			z.Index = nil
+		}
+		if (zb0001Mask & 0x2) == 0 {
+			z.Checksums = nil
+		}
+		if (zb0001Mask & 0x4) == 0 {
+			z.Error = ""
+		}
+	}
 	o = bts
 	return
 }

cmd/xl-storage-format-v2.go

@@ -47,6 +47,8 @@ var (
 	xlVersionCurrent [4]byte
 )
 
+//msgp:clearomitted
+
 //go:generate msgp -file=$GOFILE -unexported
 //go:generate stringer -type VersionType,ErasureAlgo -output=xl-storage-format-v2_string.go $GOFILE
 
@@ -460,7 +462,7 @@ func (j *xlMetaV2Version) ToFileInfo(volume, path string, allParts bool) (fi Fil
 
 const (
 	xlHeaderVersion = 3
-	xlMetaVersion   = 2
+	xlMetaVersion   = 3
 )
 
 func (j xlMetaV2DeleteMarker) ToFileInfo(volume, path string) (FileInfo, error) {
@@ -967,6 +969,50 @@ func (x *xlMetaV2) loadIndexed(buf xlMetaBuf, data xlMetaInlineData) error {
 		}
 		ver.meta = meta
 
+		// Fix inconsistent compression index due to https://github.com/minio/minio/pull/20575
+		// First search marshaled content for encoded values.
+		// We have bumped metaV to make this check cheaper.
+		if metaV < 3 && ver.header.Type == ObjectType && bytes.Contains(meta, []byte("\xa7PartIdx")) &&
+			bytes.Contains(meta, []byte("\xbcX-Minio-Internal-compression\xc4\x15klauspost/compress/s2")) {
+			// Likely candidate...
+			version, err := x.getIdx(i)
+			if err == nil {
+				// Check write date...
+				// RELEASE.2023-12-02T10-51-33Z -> RELEASE.2024-10-29T16-01-48Z
+				const dateStart = 1701471618
+				const dateEnd = 1730156418
+				if version.WrittenByVersion > dateStart && version.WrittenByVersion < dateEnd &&
+					version.ObjectV2 != nil && len(version.ObjectV2.PartIndices) > 0 {
+					var changed bool
+					clearField := true
+					for i, sz := range version.ObjectV2.PartActualSizes {
+						if len(version.ObjectV2.PartIndices) > i {
+							// 8<<20 is current 'compMinIndexSize', but we detach it in case it should change in the future.
+							if sz <= 8<<20 && len(version.ObjectV2.PartIndices[i]) > 0 {
+								changed = true
+								version.ObjectV2.PartIndices[i] = nil
+							}
+							clearField = clearField && len(version.ObjectV2.PartIndices[i]) == 0
+						}
+					}
+					if changed {
+						// All empty, clear.
+						if clearField {
+							version.ObjectV2.PartIndices = nil
+						}
+
+						// Reindex since it was changed.
+						meta, err := version.MarshalMsg(make([]byte, 0, len(ver.meta)+10))
+						if err == nil {
+							// Override both if fine.
+							ver.header = version.header()
+							ver.meta = meta
+						}
+					}
+				}
+			}
+		}
+
 		// Fix inconsistent x-minio-internal-replication-timestamp by loading and reindexing.
 		if metaV < 2 && ver.header.Type == DeleteType {
 			// load (and convert) version.
@@ -1629,7 +1675,7 @@ func (x *xlMetaV2) AddVersion(fi FileInfo) error {
 			}
 			ventry.ObjectV2.PartNumbers[i] = fi.Parts[i].Number
 			ventry.ObjectV2.PartActualSizes[i] = fi.Parts[i].ActualSize
-			if len(ventry.ObjectV2.PartIndices) > 0 {
+			if len(ventry.ObjectV2.PartIndices) > i {
 				ventry.ObjectV2.PartIndices[i] = fi.Parts[i].Index
 			}
 		}

cmd/xl-storage-format-v2_test.go

@@ -23,6 +23,7 @@ import (
 	"compress/gzip"
 	"context"
 	"encoding/base64"
+	"encoding/binary"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -583,6 +584,28 @@ func Test_xlMetaV2Shallow_Load(t *testing.T) {
 		}
 		// t.Logf("data := %#v\n", data)
 	})
+	// Test compressed index consistency fix
+	t.Run("comp-index", func(t *testing.T) {
+		// This file has a compressed index, due to https://github.com/minio/minio/pull/20575
+		// We ensure it is rewritten without an index.
+		// We compare this against the signature of the files stored without a version.
+		data, err := base64.StdEncoding.DecodeString(`WEwyIAEAAwDGAAACKgMCAcQml8QQAAAAAAAAAAAAAAAAAAAAANMYGu+UIK7akcQEofwXhAECCAjFAfyDpFR5cGUBpVYyT2Jq3gASoklExBAAAAAAAAAAAAAAAAAAAAAApEREaXLEEFTyKFqhkkXVoWn+8R1Lr2ymRWNBbGdvAaNFY00Io0VjTginRWNCU2l6ZdIAEAAAp0VjSW5kZXgBpkVjRGlzdNwAEAECAwQFBgcICQoLDA0ODxCoQ1N1bUFsZ28BqFBhcnROdW1zkgECqVBhcnRFVGFnc8CpUGFydFNpemVzktIAFtgq0gAGvb+qUGFydEFTaXplc5LSAFKb69IAGZg0p1BhcnRJZHiSxFqKm+4h9J7JCYCAgAFEABSPlBzH5g6z9gah3wOPnwLDlAGeD+os0xbjFd8O8w+TBoM8rz6bHO0KzQWtBu4GwgGSBocH6QPUSu8J5A/8gwSWtQPOtgL0euoMmAPEAKRTaXpl0gAdlemlTVRpbWXTGBrvlCCu2pGnTWV0YVN5c4K8WC1NaW5pby1JbnRlcm5hbC1hY3R1YWwtc2l6ZcQHNzA5MTIzMbxYLU1pbmlvLUludGVybmFsLWNvbXByZXNzaW9uxBVrbGF1c3Bvc3QvY29tcHJlc3MvczKnTWV0YVVzcoKsY29udGVudC10eXBlqHRleHQvY3N2pGV0YWfZIjEzYmYyMDU0NGVjN2VmY2YxNzhiYWRmNjc4NzNjODg2LTKhds5mYYMqzv8Vdtk=`)
+		if err != nil {
+			t.Fatal(err)
+		}
+		var xl xlMetaV2
+		err = xl.Load(data)
+		if err != nil {
+			t.Fatal(err)
+		}
+		for _, v := range xl.versions {
+			// Signature should match
+			if binary.BigEndian.Uint32(v.header.Signature[:]) != 0x8e5a6406 {
+				t.Log(v.header.String())
+				t.Fatalf("invalid signature 0x%x", binary.BigEndian.Uint32(v.header.Signature[:]))
+			}
+		}
+	})
 }
 
 func Test_xlMetaV2Shallow_LoadTimeStamp(t *testing.T) {

cmd/xl-storage-meta-inline.go

@@ -378,11 +378,11 @@ func (x *xlMetaInlineData) remove(keys ...string) bool {
 // xlMetaV2TrimData will trim any data from the metadata without unmarshalling it.
 // If any error occurs the unmodified data is returned.
 func xlMetaV2TrimData(buf []byte) []byte {
-	metaBuf, min, maj, err := checkXL2V1(buf)
+	metaBuf, maj, minor, err := checkXL2V1(buf)
 	if err != nil {
 		return buf
 	}
-	if maj == 1 && min < 1 {
+	if maj == 1 && minor < 1 {
 		// First version to carry data.
 		return buf
 	}
@@ -393,7 +393,7 @@ func xlMetaV2TrimData(buf []byte) []byte {
 		return buf
 	}
 	// Skip CRC
-	if maj > 1 || min >= 2 {
+	if maj > 1 || minor >= 2 {
 		_, metaBuf, err = msgp.ReadUint32Bytes(metaBuf)
 		storageLogIf(GlobalContext, err)
 	}

cmd/xl-storage.go

@@ -432,15 +432,19 @@ func (s *xlStorage) Healing() *healingTracker {
 		bucketMetaPrefix, healingTrackerFilename)
 	b, err := os.ReadFile(healingFile)
 	if err != nil {
+		if !errors.Is(err, os.ErrNotExist) {
+			internalLogIf(GlobalContext, fmt.Errorf("unable to read %s: %w", healingFile, err))
+		}
 		return nil
 	}
 	if len(b) == 0 {
+		internalLogIf(GlobalContext, fmt.Errorf("%s is empty", healingFile))
 		// 'healing.bin' might be truncated
 		return nil
 	}
 	h := newHealingTracker()
 	_, err = h.UnmarshalMsg(b)
-	bugLogIf(GlobalContext, err)
+	internalLogIf(GlobalContext, err)
 	return h
 }
 
@@ -2246,6 +2250,7 @@ func (s *xlStorage) writeAllMeta(ctx context.Context, volume string, path string
 	return renameAll(tmpFilePath, filePath, volumeDir)
 }
 
+// Create or truncate an existing file before writing
 func (s *xlStorage) writeAllInternal(ctx context.Context, filePath string, b []byte, sync bool, skipParent string) (err error) {
 	flags := os.O_CREATE | os.O_WRONLY | os.O_TRUNC
 
@@ -2268,16 +2273,11 @@ func (s *xlStorage) writeAllInternal(ctx context.Context, filePath string, b []b
 		return err
 	}
 
-	n, err := w.Write(b)
+	_, err = w.Write(b)
 	if err != nil {
-		w.Close()
-		return err
-	}
-
-	if n != len(b) {
 		w.Truncate(0) // to indicate that we did partial write.
 		w.Close()
-		return io.ErrShortWrite
+		return err
 	}
 
 	// Dealing with error returns from close() - 'man 2 close'
@@ -2367,6 +2367,41 @@ func (s *xlStorage) AppendFile(ctx context.Context, volume string, path string,
 	return nil
 }
 
+// checkPart is a light check of an existing and size of a part, without doing a bitrot operation
+// For any unexpected error, return checkPartUnknown (zero)
+func (s *xlStorage) checkPart(volumeDir, path, dataDir string, partNum int, expectedSize int64, skipAccessCheck bool) (resp int) {
+	partPath := pathJoin(path, dataDir, fmt.Sprintf("part.%d", partNum))
+	filePath := pathJoin(volumeDir, partPath)
+	st, err := Lstat(filePath)
+	if err != nil {
+		if osIsNotExist(err) {
+			if !skipAccessCheck {
+				// Stat a volume entry.
+				if verr := Access(volumeDir); verr != nil {
+					if osIsNotExist(verr) {
+						resp = checkPartVolumeNotFound
+					}
+					return
+				}
+			}
+		}
+		if osErrToFileErr(err) == errFileNotFound {
+			resp = checkPartFileNotFound
+		}
+		return
+	}
+	if st.Mode().IsDir() {
+		resp = checkPartFileNotFound
+		return
+	}
+	// Check if shard is truncated.
+	if st.Size() < expectedSize {
+		resp = checkPartFileCorrupt
+		return
+	}
+	return checkPartSuccess
+}
+
 // CheckParts check if path has necessary parts available.
 func (s *xlStorage) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) (*CheckPartsResp, error) {
 	volumeDir, err := s.getVolDir(volume)
@@ -2385,36 +2420,12 @@ func (s *xlStorage) CheckParts(ctx context.Context, volume string, path string,
 	}
 
 	for i, part := range fi.Parts {
-		partPath := pathJoin(path, fi.DataDir, fmt.Sprintf("part.%d", part.Number))
-		filePath := pathJoin(volumeDir, partPath)
-		st, err := Lstat(filePath)
+		resp.Results[i], err = xioutil.WithDeadline[int](ctx, globalDriveConfig.GetMaxTimeout(), func(ctx context.Context) (int, error) {
+			return s.checkPart(volumeDir, path, fi.DataDir, part.Number, fi.Erasure.ShardFileSize(part.Size), skipAccessChecks(volume)), nil
+		})
 		if err != nil {
-			if osIsNotExist(err) {
-				if !skipAccessChecks(volume) {
-					// Stat a volume entry.
-					if verr := Access(volumeDir); verr != nil {
-						if osIsNotExist(verr) {
-							resp.Results[i] = checkPartVolumeNotFound
-						}
-						continue
-					}
-				}
-			}
-			if osErrToFileErr(err) == errFileNotFound {
-				resp.Results[i] = checkPartFileNotFound
-			}
-			continue
+			return nil, err
 		}
-		if st.Mode().IsDir() {
-			resp.Results[i] = checkPartFileNotFound
-			continue
-		}
-		// Check if shard is truncated.
-		if st.Size() < fi.Erasure.ShardFileSize(part.Size) {
-			resp.Results[i] = checkPartFileCorrupt
-			continue
-		}
-		resp.Results[i] = checkPartSuccess
 	}
 
 	return &resp, nil
@@ -2546,17 +2557,7 @@ func (s *xlStorage) Delete(ctx context.Context, volume string, path string, dele
 }
 
 func skipAccessChecks(volume string) (ok bool) {
-	for _, prefix := range []string{
-		minioMetaTmpDeletedBucket,
-		minioMetaTmpBucket,
-		minioMetaMultipartBucket,
-		minioMetaBucket,
-	} {
-		if strings.HasPrefix(volume, prefix) {
-			return true
-		}
-	}
-	return ok
+	return strings.HasPrefix(volume, minioMetaBucket)
 }
 
 // RenameData - rename source path to destination path atomically, metadata and data directory.

docker-buildx.sh

@@ -18,7 +18,7 @@ docker buildx build --push --no-cache \
 	-t "quay.io/minio/minio:latest" \
 	-t "minio/minio:${release}" \
 	-t "quay.io/minio/minio:${release}" \
-	--platform=linux/arm64,linux/amd64,linux/ppc64le,linux/s390x \
+	--platform=linux/arm64,linux/amd64,linux/ppc64le \
 	-f Dockerfile.release .
 
 docker buildx prune -f
@@ -27,7 +27,7 @@ docker buildx build --push --no-cache \
 	--build-arg RELEASE="${release}" \
 	-t "minio/minio:${release}-cpuv1" \
 	-t "quay.io/minio/minio:${release}-cpuv1" \
-	--platform=linux/arm64,linux/amd64,linux/ppc64le,linux/s390x \
+	--platform=linux/arm64,linux/amd64,linux/ppc64le \
 	-f Dockerfile.release.old_cpu .
 
 docker buildx prune -f