2 Commits

Include renames

Author	SHA1	Message	Date
Chris LuandDevin	3e5aa8c3b3	topology: mark replica quarantined before recording the pair (#11983) ... * topology: serialize quarantine records with their layout marks A quarantine publishes a (node, vid) record and marks the replica read-only at the layout level; release and heartbeat flag updates must observe that pair as one state. Store-then-mark let a concurrent release delete the record before the mark landed, stranding the surviving replica read-only; mark-then-store let a heartbeat clear the mark before the record was visible, returning a conflicting replica to the writable list. quarantineLock now covers every record<->mark pair: flagDuplicateVolumeId's quarantine, releaseResolvedQuarantine's undo, the isQuarantined-gated marks on registration, and the quarantine-folded read-only flag writes on heartbeat paths. Remote server pushes stay outside the lock; a push that lands after the record was released is undone, and a failed release push re-adds the record for a later retry. The release test now waits for in-flight async flags to settle instead of asserting on a single read. * topology: fold quarantine into RegisterVolume's flag rebuild RegisterVolume rewrites every replica's location read-only flag from what its node last reported, and reported flags deliberately exclude quarantine. Any registration of a shared vid -- a reconnected replica, a new copy, the self-heal and delta-heartbeat re-register paths -- therefore cleared the quarantine mark on every replica in the location, while the gate afterwards only re-marked the registering node. Two call sites had no gate at all. RegisterVolume now takes an isQuarantined predicate and evaluates it under accessLock for every replica it touches, so the mark is never dropped in the first place: a release unmarks after the rebuild, and a quarantine mark re-applies on the next rebuild, with no window between. * topology: keep quarantine when a vacuum commit re-adds a replica SetVolumeAvailable re-adds the replica into the location list; a re-added slot starts with a cleared read-only flag, so a quarantined replica came back flag-free and the next ensureCorrectWritables could return a conflicting volume to the writable list. Pass the quarantine state in and set the flag back under the same accessLock, with the caller holding quarantineLock so release cannot interleave between the check and the mark. * topology: merge quarantine records instead of overwriting them enforceQuarantine wrote back the state copy it loaded before its remote push, so a concurrent writer's enforced=true was lost: the server stayed read-only while the record said unenforced, and a later release skipped the writable push it owed. The write-back now reloads the record under quarantineLock and merges -- enforced wins from either side, reported is taken from the newer pre-enforcement observation only while no push has landed yet. All three compensating writable pushes had the same hole in reverse: a failed un-quarantine left the server read-only with no record to retry from, and release's restore blindly overwrote any record a fresh flag pass had created in between. They now go through restoreQuarantineRecord, which adds the record only when absent and otherwise sets enforced on the current one, preserving its reported flag. * topology: hold quarantineLock over registration's quarantine check-and-mark RegisterVolume reads the quarantine record and marks the replica read-only under accessLock, but the pair ran without quarantineLock. A release could push writable, watch the record get re-read, and then delete it: the replica stayed read-only with no record left to clear, and unchanged writable heartbeats skip SetReplicaReadOnlyFlag so the mark never repaired. Holding quarantineLock around the check-and-mark in all three production callers serializes it against the release clear-and-delete. * topology: serialize remote quarantine pushes behind a record recheck releaseResolvedQuarantine deletes the record under quarantineLock and sends the writable request after unlock. A conflict flagged while that request is in flight creates a fresh record and marks the replica read-only again, and the older writable request can still land last, leaving the server writable under an active quarantine. The reverse flap strands a stale read-only mark the same way. Route every QuarantineVolumeFn call through pushQuarantine, which holds quarantinePushLock across the remote call and re-checks the record under quarantineLock right before sending: a read-only push requires the pair to exist, a writable push requires it to be gone. A skipped push means the decision already moved on, so the final server state always follows the newest record. * topology: serialize quarantine pushes per replica, not globally A single quarantinePushLock held across the remote mark call let one slow volume server (up to the 10s client timeout) delay pushes for unrelated replicas. Keying the lock by (node, vid) keeps pushes to one replica ordered in record-decision order while pushes to others run in parallel. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * topology: restore the layout read-only mark with a released record A failed writable push re-armed the quarantine record but left the replica marked writable in the layout, so PickForWrite could route to a replica the server still holds read-only. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * topology: wait out async duplicate checks in the release-retry test TestFailedReleasePushRestoresQuarantineMark asserts layout marks around a release pass, but the two RegisterVolumeLayout calls each start a background flagDuplicateVolumeId that can still be mid-flight. A late mark could land after the final release and fail the writable assertion even though the code behaved correctly. Track the async passes in a WaitGroup and drain them before the explicit flag call so the rest of the test is deterministic. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * topology: keep quarantine when a replica's layout key is unreadable * topology: keep a failed writable push's restore ordered under the push lock * topology: retry the quarantine release on every duplicate check * ci: isolate Java and S3 test servers on persistent runners * ci: drop the duplicated -ip flags in the lifecycle test server The bind flags were already on the command; the isolation pass added a second pair. * topology: retry a failed quarantine writable push on the next report * topology: retry pending quarantine releases off the leader pulse A failed writable push re-arms the quarantine record with a retry that only enforceQuarantine fires, and that runs only for volumes a heartbeat carries. Once the server has reported the replica read-only it drops out of the delta reports, and restoreQuarantineRecord keeps the stored flag matching the server's so the digests agree and no full list is requested - the pending release then never retries and the idle volume stays read-only forever. Run the same release pass from the leader's pulse loop so a pending retry no longer waits on a report. * topology: exercise the pulse-driven quarantine release retry --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>	2026-10-24 07:00:45 -07:00
Chris LuandDevin	cc281dabc9	master: keep new volumes and writes off servers in maintenance mode (#11147) ... * master: keep new volumes and writes off servers in maintenance mode The master recorded a volume server's maintenance flag from the heartbeat but never consulted it. A server in maintenance (#7977) is being drained, yet the master kept creating volumes on it whenever it had free slots and kept handing out its volumes for writes. Nothing on the volume server blocks plain HTTP uploads either, so "read-only mode" was only a name. Volume growth: a data node in maintenance mode reports zero free slots through AvailableSpaceFor, which takes it out of every candidate list, feasibility count and capacity reservation. Its slots still roll up into its rack and data center, so the random offset drawn from those totals for an other-rack or other-DC replica could land in space the walk then skips and fail with "No free volume slot found!" while siblings had room; the walk now folds the offset into the space that is actually eligible. This also covers the pre-existing case of an over-committed sibling. Assignment: a replica on a server in maintenance mode is treated like a read-only replica in isAllWritable, so its volume leaves the writable list and returns when the flag clears. Topology.SetDataNodeMaintenanceMode re-evaluates the node's volumes on every change, since heartbeats are digest-based and a full volume list may not follow for a long time. Reads and lookups are untouched. The flag moves to an atomic so the assign and growth paths can read it without the node lock. Heartbeat: the Go volume server sent its state only when it changed, so a master elected while a server sat in maintenance never learned about it. The state now rides along on every heartbeat, as the Rust server already does; the master's compare is an atomic swap, and only a change does work. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * master: hold maintenance mode through vacuum commit and mark-writable SetVolumeAvailable and SetVolumeWritable put a volume back on the writable list on the replica count alone. A vacuum that started before the server entered maintenance, or a vacuum worker's mark-writable arriving after it, handed the volume back to assignment with a replica on the draining server. Heartbeats carry only changed volumes, so nothing re-evaluated it until the volume itself changed. Apply isAllWritable on both paths, the same test EnsureCorrectWritables uses. Also pin that re-evaluating a volume a concurrent disconnect already removed from its layout is a no-op. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * master: record a server's read-only notification on its node before judging the volume A volume server notifies the master the moment it flips a volume between read-only and writable, ahead of the heartbeat that repeats the flag. The layout only set its per-location flag, so isAllWritable, which reads the node's heartbeat copy, still saw the old value: a mark-writable was withheld until the next heartbeat, and a re-evaluation landing between a mark-readonly and its heartbeat put the volume back on the writable list. Record the flag on the node's volume first. AddOrUpdateVolume keeps the digest and the active volume count in step, so the heartbeat that follows finds nothing to change. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * master: a read-only mark does not confirm a provisional volume DataNode.SetVolumeReadOnly went through Disk.AddOrUpdateVolume, which treats its input as a server report and so ended the grace period that keeps a just-grown volume safe from a full report collected before the grow. A volume marked read-only before its first report could then be removed by that stale report. Give Disk a SetVolumeReadOnly that flips the flag and keeps the digest and active volume count in step without touching volumeAddedAt. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>	2026-09-03 23:50:12 -07:00