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add crash protection from backend modifications (#16846)

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Harshavardhana
2023-03-20 09:08:42 -07:00
committed by GitHub
parent 3b5dbf9046
commit 6c11dbffd5
6 changed files with 61 additions and 29 deletions
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26
cmd/erasure-healing.go
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@@ -505,8 +505,34 @@ func (er *erasureObjects) healObject(ctx context.Context, bucket string, object
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)
logger.LogIf(ctx, err)
return er.defaultHealResult(latestMeta, storageDisks, storageEndpoints, errs,
bucket, object, versionID), err
}
latestDisks := shuffleDisks(availableDisks, 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err := fmt.Errorf("unexpected file distribution (%v) from outdated disks (%v), looks like backend disks have been manually modified refusing to heal %s/%s(%s)",
latestMeta.Erasure.Distribution, outDatedDisks, bucket, object, versionID)
logger.LogIf(ctx, err)
return er.defaultHealResult(latestMeta, storageDisks, storageEndpoints, errs,
bucket, object, versionID), err
}
outDatedDisks = shuffleDisks(outDatedDisks, latestMeta.Erasure.Distribution)
if !latestMeta.Deleted && len(latestMeta.Erasure.Distribution) != len(partsMetadata) {
err := fmt.Errorf("unexpected file distribution (%v) from metadata entries (%v), looks like backend disks have been manually modified refusing to heal %s/%s(%s)",
latestMeta.Erasure.Distribution, len(partsMetadata), bucket, object, versionID)
logger.LogIf(ctx, err)
return er.defaultHealResult(latestMeta, storageDisks, storageEndpoints, errs,
bucket, object, versionID), err
}
partsMetadata = shufflePartsMetadata(partsMetadata, latestMeta.Erasure.Distribution)
copyPartsMetadata := make([]FileInfo, len(partsMetadata))