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fix(restore): rehydrate the selected version under its object lock

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Preserve handler version context, resolve the requested version's pool, and
return on the initial read failure without writing metadata. Propagate owned
NoLock to single-part writes, multipart completion and failure cleanup in
the same patch. Preserve the original modification time on cleanup.

Route the restore status copy by version and allow internal multipart
rehydration only for a matching completed transition. Single-pool restores
own the metadata snapshot through download and cleanup. Keep public
completion in object-before-upload order, using the target set's object
lock for single-pool calls, so concurrent completion cannot invert locks.

Cover real signed POSTs, null/UUID and cross-pool identity, download failures,
multipart overwrite guards, Object Lock updates and concurrent completion.
This package depends on the restored-copy cleanup safety delivered in R2.

Signed-off-by: Feng Ruohang <rh@vonng.com>
This commit is contained in:
Feng Ruohang
2026-11-03 21:20:24 +08:00
parent e7103d77cb
commit fa42a09826
5 changed files with 778 additions and 20 deletions
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cmd/erasure-multipart.go
+7 -1
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@@ -34,6 +34,7 @@ import (
"github.com/google/uuid"
"github.com/klauspost/readahead"
"github.com/minio/minio-go/v7/pkg/set"
"github.com/minio/minio/internal/bucket/lifecycle"
"github.com/minio/minio/internal/config/storageclass"
"github.com/minio/minio/internal/crypto"
"github.com/minio/minio/internal/hash"
@@ -1697,13 +1698,18 @@ func (er erasureObjects) CompleteMultipartUpload(ctx context.Context, bucket str
return oi, toObjectErr(err, bucket, object)
}
} else {
_, gerr := getObjectInfo(ctx, bucket, object, ObjectOptions{
current, gerr := getObjectInfo(ctx, bucket, object, ObjectOptions{
VersionID: fi.VersionID,
Versioned: opts.Versioned,
VersionSuspended: opts.VersionSuspended,
NoLock: true,
})
switch {
case gerr == nil && opts.Transition.RestoreRequest != nil &&
current.TransitionedObject.Status == lifecycle.TransitionComplete &&
current.ETag == fi.Metadata["etag"] && current.Size == fi.Size && current.ModTime.Equal(fi.ModTime):
// The internal restore path rehydrates this same tiered version.
// Ordinary multipart completion must still reject a version overwrite.
case gerr == nil, errors.As(gerr, &MethodNotAllowed{}):
return oi, toObjectErr(errAuthentication, bucket, object)
case isErrVersionNotFound(gerr) || isErrObjectNotFound(gerr):