Feng Ruohang
109d824e5f
fix: retransmit and re-order Object Lock for SSE-C replicas (single erasure set)
...
Issue #120 routes an existing SSE-C replica through PutObjectHandler and
NewMultipartUploadHandler. On main those handlers assigned the incoming retention
and legal hold directly, without the source-timestamp ordering #111 added to
CopyObjectHandler and without persisting the ordering timestamps, so in
active-active replication a retransmit carrying an older value could overwrite a
destination version's newer lock state.
Share #111 's ordering decision as applyReplicatedObjectLock in
cmd/bucket-object-lock.go and call it from CopyObject, PUT and multipart
initiation. A request that is not an actual trusted replica keeps ordinary write
semantics (a validated value is applied and stamped now); only a real replica
update is ordered against the stored version, so a marker-only peer write no
longer drops a validated hold or default retention. CopyObject keeps its SSE-C
key-rotation encMetadata reconciliation inline. putReplicationOpts now emits a
stored retention ordering timestamp even when the value keys are absent, so a
removal recorded on the retransmit PUT path still replicates onward. replicateAll
marks Failed and carries the error when putReplicationOpts fails.
The handler decision is made against the version as it stands then, which a
concurrent lock update can outrun before the write commits, and for multipart
across the whole initiation-to-completion span. Close that window under the
object write lock the receiving erasure set holds: a trusted SSE-C replica full
write sets ObjectOptions.ReplicaLockReconcile, and erasureObjects.PutObject and
CompleteMultipartUpload re-run the ordering (reconcileStoredObjectLock, which
orders retention and legal hold independently by their reserved timestamps)
against the destination version read on that set before committing. Persisted
upload metadata records the null version as an empty VersionID, so completion
looks that up as the null version rather than the latest. The reconcile runs only
against an existing version; a not-found destination keeps the write's own
accepted lock, including a pre-upgrade upload that persisted values without
ordering timestamps, and a non-not-found read error fails the write. Scoped to
the SSE-C paths this issue enables; CopyObject is left as #111 wrote it.
Scope: this orders Object Lock against the destination version under the write
lock and is correct for a single erasure set. A multi-pool deployment -- where a
version can have duplicate copies across pools, object ModTime ties do not track
per-field lock timestamps, and the object namespace lock is per-pool -- needs a
cross-pool lock-safe reconcile and is deliberately out of scope here, tracked in
pgsty/silo#TBD-multipool-lock.
Tests: TestAPISSECReplicaRetransmitObjectLockOrdering and its multipart sibling;
TestAPIReplicaMultipartNewerHoldSurvivesCompletion and
TestReplicaPutObjectLockReconcileUnderWriteLock (a hold or retention reaching the
version after the handler decision, or after multipart initiation, survives the
commit; a pre-upgrade upload on an absent version keeps its lock);
TestReplicaLockReconcileNullVersion (a null-version completion reconciles the null
version, not a coexisting UUID version, and an absent null version keeps its
accepted lock); TestAPIReplicaMarkerOnlyAppliesObjectLock; TestReplicaStoredLock;
the timestamp-only putReplicationOpts round trip; and the retransmit, exemption
and target-head tests. The #111 CopyObject replica suite and the existing #120
suite stay green, as do the PUT/multipart handler and object-layer regression
suites. Compatibility: the shared helper preserves #111 's CopyObject behavior; a
non-replica PUT or multipart initiation that sets Object Lock now also stamps the
reserved ordering timestamp, matching CopyObject since #111 ; only trusted SSE-C
replica writes take the in-lock reconcile.
Refs pgsty/silo#120
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com >
Claude-Session: https://claude.ai/code/session_01L7qJqWwy8oFA6aCXWRzXQe
Signed-off-by: Feng Ruohang <rh@vonng.com >
2026-09-07 00:11:04 +08:00
..
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