A volume removed from writables by the write-assign path stamps fullSince
in RecordAssign, which UpdateVolumeSize's recovery branch needs to re-add
it once it decays back under the limit. A volume removed by the heartbeat
capacity path (SetVolumeCapacityFull) never stamped it, so after the
reported size dropped — vacuum, TTL expiry, bulk deletes — the volume
stayed out of writables forever, even though every heartbeat carried the
smaller size.
Stamp fullSince when the capacity path actually removes a volume from
writables, so the existing recovery branch fires. Gating on the removal
keeps it paired with the caller's activeVolumeCount decrement, matching
RecordAssign. Oversized volumes still stay out, as before.
Chris LuandGitHub
e60d02c339