Chris LuGitHubDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* vacuum: let the sweep release volumes that stay empty and quiet
Vacuuming reclaims bytes but not slots: a fully emptied volume stays
registered to its collection forever, and since growth is gated only on
slot count a store at 99% free disk can still refuse writes to other
collections (#11429). volume.deleteEmpty exists but is manual-only.
With -vacuumDeleteEmptyAfterSeconds (or master.vacuumDeleteEmptyAfterSeconds
under weed server/mini; default 0, off) the automatic sweep now deletes
replica copies that have stayed empty and quiet for that long, the same
rule volume.deleteEmpty applies on demand: remote-backed copies are
skipped, and every delete carries the volume server's onlyEmpty /
onlyGarbage guards so a copy written since the last report is refused
rather than removed. Copies that still hold data or were written
recently stay; only a volume whose every copy is deleted leaves the
sweep's work map, sparing a compaction of bytes that are all deleted.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* vacuum: harden empty-volume sweep against partial and racing deletes
Review follow-up on #11477:
- delete a volume only when every replica copy is a verifiable
empty-and-quiet candidate; deleting the empty copy of a volume whose
sibling holds live files would silently cut its replica count
(greptile P1).
- drain the volume out of the writable list before deleting, the same
drain the compact pass uses, so PickForWrite stops assigning it and
pending writes settle (devin).
- bound the VolumeDelete RPC so one stalled server cannot hold the
vacuum lock indefinitely (greptile P1, reusing allocateVolumeTimeout).
The vid2location panic scenario raised in review does not exist:
VolumeLocationList methods are nil-receiver safe and a missing vid just
fails enoughCopies, so a partially deleted volume skips compaction
instead of crashing the sweep.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* vacuum: unregister deleted empty replicas and prune the sweep list
A successful VolumeDelete only updates the volume server; the master
still tracked the replica and kept it in the sweep's location list for
the compaction pass (coderabbit on #11477). Unregister the replica right
after its delete succeeds and drop it from the sweep copy, so a partially
deleted volume only compacts copies that still exist.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* vacuum: pin deleting volumes out of the writable list across heartbeats
Review follow-up on #11477 (greptile): DrainAndRemoveFromWritable only
removed the volume once; a heartbeat landing between the drain and the
replica deletes re-evaluated writability and re-added it, so a client
write could reach a replica whose siblings were already gone and leave
the volume under-replicated when the last copy refused its onlyEmpty
delete.
MarkDeleting records the vid in deletingVolumes — checked inside
setVolumeWritable so heartbeat, capacity-recovery, and admin re-add
paths all hold it out — and UnmarkDeleting releases it once the sweep
finishes the copy pass. A partially deleted volume's surviving replicas
then return to writable through the normal heartbeat path.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* vacuum: restore writability when a sweep delete survives
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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