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Relax quorum agreement on DataDir values (#20232) 

Previously, we checked if we had a quorum on the DataDir value. 
We are removing this check, which allows reading objects with different 
DataDir values in a few drives (due to a rebalance-stop race bug) 
provided their eTags or ModTimes match.
This commit is contained in:
Krishnan Parthasarathi 2024-08-12 12:02:21 -07:00 committed by GitHub
parent 53eb7656de
commit 04be352ae9
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GPG Key ID: B5690EEEBB952194
1 changed files with 5 additions and 4 deletions
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9
cmd/erasure-metadata.go
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@ -289,13 +289,14 @@ func findFileInfoInQuorum(ctx context.Context, metaArr []FileInfo, modTime time.
mtimeValid := meta.ModTime.Equal(modTime)
if mtimeValid || etagOnly {
fmt.Fprintf(h, "%v", meta.XLV1)
if !etagOnly {
// Verify dataDir is same only when mtime is valid and etag is not considered.
fmt.Fprintf(h, "%v", meta.GetDataDir())
}
for _, part := range meta.Parts {
fmt.Fprintf(h, "part.%d", part.Number)
fmt.Fprintf(h, "part.%d", part.Size)
}
// Previously we checked if we had quorum on DataDir value.
// We have removed this check to allow reading objects with different DataDir
// values in a few drives (due to a rebalance-stop race bug)
// provided their their etags or ModTimes match.
if !meta.Deleted && meta.Size != 0 {
fmt.Fprintf(h, "%v+%v", meta.Erasure.DataBlocks, meta.Erasure.ParityBlocks)