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add tests for ILM transition and healing (#166) (#20601)

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This PR fixes a regression introduced in https://github.com/minio/minio/pull/19797
by restoring the healing ability of transitioned objects

Bonus: support for transitioned objects to carry original
The object name is for future reverse lookups if necessary.

Also fix parity calculation for tiered objects to n/2 for n/2 == (parity)
This commit is contained in:
Harshavardhana
2024-10-31 15:10:24 -07:00
committed by GitHub
parent c1fc7779ca
commit a6f1e727fb
11 changed files with 151 additions and 18 deletions
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6
cmd/erasure-metadata.go
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@@ -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
}