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Chris Lu
baf0dd680e
* ec: measure shard placement against replica-placement caps ecShardPlacementViolations reports where a volume's newest-generation shard placement exceeds the per-node and per-rack caps a -shardReplicaPlacement requests, using the same digit mapping the balance planner enforces (SameRackCount = shards/node, DiffRackCount = shards/rack, dc-qualified rack keys). * ec.encode: -strictPlacement keeps originals when placement breaches caps -shardReplicaPlacement tells the balancer the requested per-node and per-rack shard limits, but nothing verifies the outcome. With -strictPlacement the pre-delete shard verification also measures the final placement against those caps: a volume still over the node or rack limit aborts before its source is deleted, so the encode only completes when the requested failure-domain spread is actually met. * ec.encode: cover the strict-placement delete gate with a test The gate in verifyEcShardsBeforeDelete now runs against a stubbed topology: a compliant spread passes while an over-cap placement is refused before source deletion. The retry knobs become package vars so the test does not wait out the heartbeat-propagation backoff. * ec.encode: enforce -shardReplicaPlacement without a flag Drop the -strictPlacement option: the requested per-node and per-rack caps are always requirements at the pre-delete verification, so the encode only completes when the placement actually honors them.