This PR introduces three new metrics...
- `scrub_last_time_seconds`
- `scrub_volume_failures`
- `scrub_shard_failures`
...capturing overall volume scrub results, and allowing to construct alerts
and dashboards to monitor scrubbing progress.
Note that these metrics are aggregated at the volume/EC shard level, and not
intended for fine-grained tracking of scrubbing operations.
* Give the `ScrubVolume()` RPC an option to flag found broken volumes as read-only.
Also exposes this option in the shell `volume.scrub` command.
* Remove redundant test in `TestVolumeMarkReadonlyWritableErrorPaths`.
417051bb slightly rearranges the logic for `VolumeMarkReadonly()` and `VolumeMarkWritable()`,
so calling them for invalid volume IDs will actually yield that error, instead of checking
maintnenance mode first.
Implement index (fast) scrubbing for regular/EC volumes via `ScrubVolume()`/`ScrubEcVolume()`.
Also rearranges existing index test files for reuse across unit tests for different modules.
* Implement RPC skeleton for regular/EC volumes scrubbing.
See https://github.com/seaweedfs/seaweedfs/issues/8018 for details.
* Minor proto improvements for `ScrubVolume()`, `ScrubEcVolume()`:
- Add fields for scrubbing details in `ScrubVolumeResponse` and `ScrubEcVolumeResponse`,
instead of reporting these through RPC errors.
- Return a list of broken shards when scrubbing EC volumes, via `EcShardInfo'.
Lisandro Pin