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Chris Lu
4feb30deff
* pb: heartbeat fields for the federated volume-id bound (#11763) Heartbeat carries max_volume_id_seen and last_seen_topology_id up, and HeartbeatResponse echoes max_volume_id and topology_id down, so the allocation bound is replicated to every volume server. * master: echo the volume-id bound and fold reported bounds in (#11763) Every heartbeat response carries the leader current max volume id and topology id; every heartbeat reported max_volume_id_seen is folded into the topology bound via UpAdjustMaxVolumeId. * volume: persist a per-dir vid stamp of the highest id ever seen (#11763) The store keeps max_volume_id_seen + last_seen_topology_id in a .vid_stamp file per volume dir, fed by heartbeat echoes, AllocateVolume, and local volume/EC creation, seeded at boot from stamps and local holdings, and reported in every heartbeat. A rebuilt master recovers the bound from the first surviving veteran report. * volume-rust: mirror the vid stamp and heartbeat echo handling (#11763) Same mechanism as the Go volume server: .vid_stamp per dir, bound folded in from add_location scans and allocate/mount calls, echoed fields applied on heartbeat responses, reported on every heartbeat. * volume: serialize vid stamp writes and fsync the directory (#11763) * volume-rust: serialize vid stamp writes and fsync the directory (#11763) * master: echo the allocation bound to connected servers on change The bound was only sent at connect time or on digest mismatch, so a healthy stream never learned later increases. If the high-id server then went offline and the master lost state, survivors restored a stale bound and the id could be reissued. Resend the heartbeat response whenever the bound or topology id moved. * volume: retry failed vid stamp saves on later updates A transient write failure left the in-memory bound raised but the stamp stale, and repeat updates at the same bound never retried. Track a dirty flag so any later update re-attempts the save. * volume: cover stamp bootstrap for pre-stamp dirs in test * volume-rust: retry failed vid stamp saves, mirroring Go * volume-rust: stamp every dir with the combined bound on add_location A dir whose own stamp sat below the combined bound kept its stale value after fold; losing the higher-stamped disk then restarted the server below ids it had already learned. Rewrite all stamps after each location folds in. * volume: stamp mounted volume and ec shard ids (#11763) * volume-rust: stamp mounted volume ids, mirroring Go (#11763) * volume: retry dirty vid stamp save on unchanged topology id (#11763) * volume-rust: retry dirty vid stamp save on unchanged topology id (#11763) * master: record echoed bound from the sent heartbeat response (#11763)