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Zhengchao An
32845e03b0
During resync against an AWS-style target that rejects RustFS UUID versionIds,
the code retries HEAD without a versionId and compares ETags. On a match it set
`replication_action = None` ("already in sync, nothing to copy") but did not
return, so control fell through to `if replication_action != ReplicationAction::All`
— a branch meant only for the unsupported metadata-only case — and stamped the
object FAILED with "metadata-only replication is not implemented". The target
already held an identical object, yet the source recorded FAILED forever, so
AWS-style targets never converged and the MRF kept re-queuing.
Handle `ReplicationAction::None` explicitly before that branch: record it as
Completed (with the resync timestamp/`replication_resynced` bookkeeping for
ExistingObject + reset_id, mirroring the HEAD-success None path) and return.
Only `ReplicationAction::Metadata` now takes the metadata-unsupported failure
branch; `All` still proceeds to the copy. This path is the only way `None`
reaches that point (the HEAD-success None case already returns earlier).
Refs backlog#799 (B11).