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lightbits","display_name":"Lightbits CI","email":"openstack@lightbitslabs.com","username":"openstack_lightbits"},"date":"2026-09-18 10:52:00.000000000","message":"Patch Set 2:\n\nBuild succeeded. log path: ${LOG_PATH}\nLeave a comment with","accounts_in_message":[],"_revision_number":2},{"id":"669a816a6527bf89ccf4f0f389ce92f12e8bbda8","author":{"_account_id":37309,"name":"Bryan Fraschetti","display_name":"Bryan Fraschetti","email":"bryan.fraschetti@canonical.com","username":"bryanfraschetti"},"date":"2026-09-18 14:11:59.000000000","message":"Patch Set 2: Code-Review-1\n\n(1 comment)","accounts_in_message":[],"_revision_number":2}],"current_revision_number":2,"current_revision":"b2b3392e614e983812e09d4a150c96affc3023d8","revisions":{"491c4d1e86ec9dbbe097503276006d8b3c5a05b4":{"kind":"REWORK","_number":1,"created":"2026-09-17 10:38:43.000000000","uploader":{"_account_id":7166,"name":"Sylvain Bauza","email":"sbauza@redhat.com","username":"sbauza"},"ref":"refs/changes/11/1006011/1","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/nova","ref":"refs/changes/11/1006011/1","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/nova refs/changes/11/1006011/1 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/nova refs/changes/11/1006011/1 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/nova refs/changes/11/1006011/1 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/nova refs/changes/11/1006011/1"}}},"commit":{"parents":[{"commit":"cabe711e58bcb9e314098361f61dfb0215436e6c","subject":"Guard against deleting a concurrent request\u0027s BDM on timeout","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/cabe711e58bcb9e314098361f61dfb0215436e6c"}]}],"author":{"name":"Sylvain Bauza","email":"sbauza@redhat.com","date":"2026-09-17 10:16:02.000000000","tz":120},"committer":{"name":"Sylvain Bauza","email":"sbauza@redhat.com","date":"2026-09-17 10:36:35.000000000","tz":120},"subject":"Reject stale reserve_block_device_name RPC on compute","message":"Reject stale reserve_block_device_name RPC on compute\n\nWhen the conductor sends a reserve_block_device_name RPC call to\ncompute and compute is stalled (e.g. the instance lock is held by\nanother operation), the conductor\u0027s call_monitor_timeout fires after\nrpc_response_timeout seconds because no heartbeat was received. The\nconductor raises MessagingTimeout and moves on.\n\nHowever, when compute eventually dequeues and processes the stale\nmessage, it still creates a BDM in the database. Since the conductor\nalready gave up, attach_volume will never be called for this BDM,\nleaving an orphan record that blocks future attachment attempts for\nthe same volume on the same instance (the duplicate check in\ndo_reserve raises InvalidVolume).\n\nTo prevent this, check the age of the request before creating the\nBDM. The context.timestamp reflects the original API request time,\nand the conductor sends the RPC almost immediately after, so elapsed\ntime is a reliable proxy for how long the message has been waiting.\nIf the request is older than rpc_response_timeout, the conductor has\nalmost certainly timed out (that value is used as the\ncall_monitor_timeout for this specific RPC call) and any BDM created\nwould be orphaned.\n\nUsing rpc_response_timeout rather than long_rpc_timeout is deliberate:\nonce compute starts processing and sends heartbeats, the conductor\nswitches to the long_rpc_timeout deadline, but the LP #2141355\nscenario is specifically about compute not processing at all within\nthe heartbeat window.\n\nOrphan BDMs that slip through the narrow remaining window\n(rpc_response_timeout \u003c elapsed \u003c long_rpc_timeout, where compute\nwas stalled just past the heartbeat deadline but before the hard\ntimeout) currently have no automated cleanup path:\n_delete_dangling_bdms (called during hard reboot) only processes\nBDMs that have an attachment_id set, and there is no nova-manage\nvolume_attachment remove command yet. Manual DB cleanup is required\nfor those rare cases.\n\nChange-Id: I633f09d0b02be9d1f85c311b77ebd399b15d3611\nCloses-Bug: #2141355\nAssisted-By: Cursor claude-4.6-opus\nSigned-off-by: Sylvain Bauza \u003csbauza@redhat.com\u003e\nCo-authored-by: Cursor \u003ccursoragent@cursor.com\u003e\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/491c4d1e86ec9dbbe097503276006d8b3c5a05b4"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/491c4d1e86ec9dbbe097503276006d8b3c5a05b4"}]},"branch":"refs/heads/master"},"b2b3392e614e983812e09d4a150c96affc3023d8":{"kind":"REWORK","_number":2,"created":"2026-09-18 08:35:11.000000000","uploader":{"_account_id":7166,"name":"Sylvain Bauza","email":"sbauza@redhat.com","username":"sbauza"},"ref":"refs/changes/11/1006011/2","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/nova","ref":"refs/changes/11/1006011/2","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/nova refs/changes/11/1006011/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/nova refs/changes/11/1006011/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/nova refs/changes/11/1006011/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/nova refs/changes/11/1006011/2"}}},"commit":{"parents":[{"commit":"cabe711e58bcb9e314098361f61dfb0215436e6c","subject":"Guard against deleting a concurrent request\u0027s BDM on timeout","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/cabe711e58bcb9e314098361f61dfb0215436e6c"}]}],"author":{"name":"Sylvain Bauza","email":"sbauza@redhat.com","date":"2026-09-17 10:16:02.000000000","tz":120},"committer":{"name":"Sylvain Bauza","email":"sbauza@redhat.com","date":"2026-09-18 08:33:30.000000000","tz":120},"subject":"Reject stale reserve_block_device_name RPC on compute","message":"Reject stale reserve_block_device_name RPC on compute\n\nWhen the conductor sends a reserve_block_device_name RPC call to\ncompute and all compute RPC worker threads are busy, the message\nsits in the RabbitMQ queue undelivered. Since no worker thread\ndispatches it, oslo.messaging never starts heartbeats, and the\nconductor\u0027s call_monitor_timeout fires after rpc_response_timeout\nseconds. The conductor raises MessagingTimeout and moves on.\n\nHowever, when a worker thread eventually becomes free and processes\nthe stale message, it still creates a BDM in the database. Since\nthe conductor already gave up, attach_volume will never be called\nfor this BDM, leaving an orphan record that blocks future attachment\nattempts for the same volume on the same instance (the duplicate\ncheck in do_reserve raises InvalidVolume).\n\nNote that the instance lock (acquired inside do_reserve) cannot\ncause this timeout: once a worker thread picks up the message,\noslo.messaging calls dispatch() and starts the watchdog thread\nwhich sends heartbeats every rpc_response_timeout/2 seconds. From\nthat point the conductor switches to the long_rpc_timeout deadline\n(1800s by default). The rpc_response_timeout timeout only fires\nwhen no thread picks up the message at all.\n\nTo prevent this, check the age of the request before creating the\nBDM. The context.timestamp reflects the original API request time,\nand the conductor sends the RPC almost immediately after, so elapsed\ntime is a reliable proxy for how long the message has been waiting.\nIf the request is older than rpc_response_timeout, the conductor has\nalmost certainly timed out and any BDM created would be orphaned.\n\nUsing rpc_response_timeout as the threshold is conservative: the\noslo.messaging watchdog sends its first heartbeat after\nrpc_response_timeout/2 seconds of processing, so messages that sat\nin the queue between rpc_response_timeout/2 and rpc_response_timeout\nmay still produce orphans (the heartbeat arrives after the\nconductor\u0027s deadline). Those currently have no automated cleanup\npath: _delete_dangling_bdms (called during hard reboot) only\nprocesses BDMs with an attachment_id set, and there is no\nnova-manage volume_attachment remove command yet. Manual DB cleanup\nis required for those rare cases.\n\nChange-Id: I633f09d0b02be9d1f85c311b77ebd399b15d3611\nCloses-Bug: #2141355\nAssisted-By: Cursor claude-4.6-opus\nSigned-off-by: Sylvain Bauza \u003csbauza@redhat.com\u003e\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/b2b3392e614e983812e09d4a150c96affc3023d8"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/nova/commit/b2b3392e614e983812e09d4a150c96affc3023d8"}]},"branch":"refs/heads/master"}},"requirements":[],"submit_records":[{"rule_name":"gerrit~DefaultSubmitRule","status":"OK","labels":[{"label":"Verified","status":"MAY","applied_by":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]}},{"label":"Code-Review","status":"MAY","applied_by":{"_account_id":37309,"name":"Bryan Fraschetti","display_name":"Bryan Fraschetti","email":"bryan.fraschetti@canonical.com","username":"bryanfraschetti"}},{"label":"Workflow","status":"MAY"},{"label":"Review-Priority","status":"MAY"}]}],"submit_requirements":[{"name":"Verified","description":"Verified in gate by CI","status":"UNSATISFIED","is_legacy":false,"submittability_expression_result":{"expression":"label:Verified\u003dMAX AND -label:Verified\u003dMIN","fulfilled":false,"status":"FAIL","passing_atoms":[],"failing_atoms":["label:Verified\u003dMAX","label:Verified\u003dMIN"],"atom_explanations":{"label:Verified\u003dMAX":"","label:Verified\u003dMIN":""}}},{"name":"Code-Review","description":"Code reviewed by core reviewer","status":"UNSATISFIED","is_legacy":false,"submittability_expression_result":{"expression":"label:Code-Review\u003dMAX AND -label:Code-Review\u003dMIN","fulfilled":false,"status":"FAIL","passing_atoms":[],"failing_atoms":["label:Code-Review\u003dMAX","label:Code-Review\u003dMIN"],"atom_explanations":{"label:Code-Review\u003dMAX":"","label:Code-Review\u003dMIN":""}}},{"name":"Review-Priority","description":"Review Priority","status":"NOT_APPLICABLE","is_legacy":false,"applicability_expression_result":{"fulfilled":false,"status":"FAIL"},"submittability_expression_result":{"expression":"is:true","fulfilled":true,"status":"NOT_EVALUATED","passing_atoms":[],"failing_atoms":[],"atom_explanations":{}}},{"name":"Workflow","description":"Approved for gate by core reviewer","status":"UNSATISFIED","is_legacy":false,"submittability_expression_result":{"expression":"label:Workflow\u003dMAX AND -label:Workflow\u003dMIN","fulfilled":false,"status":"FAIL","passing_atoms":[],"failing_atoms":["label:Workflow\u003dMAX","label:Workflow\u003dMIN"],"atom_explanations":{"label:Workflow\u003dMAX":"","label:Workflow\u003dMIN":""}}}]}