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{"id":"openstack%2Fswift~738113","triplet_id":"openstack%2Fswift~master~Icba98f1c9e17e8ade3f0e1b9a23360cf5ab8c86b","project":"openstack/swift","branch":"master","topic":"sharding-split-brain","hashtags":[],"change_id":"Icba98f1c9e17e8ade3f0e1b9a23360cf5ab8c86b","subject":"Identify deleted shards as shards","status":"MERGED","created":"2020-06-25 21:30:02.000000000","updated":"2020-07-13 22:33:06.000000000","submitted":"2020-07-13 22:31:32.000000000","submitter":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"total_comment_count":11,"unresolved_comment_count":0,"has_review_started":true,"submission_id":"738113-1594679492761-1939c49e","meta_rev_id":"6f0da5e700efb5cb1c0682168a44cf1d5065a1bc","_number":738113,"virtual_id_number":738113,"owner":{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},"actions":{},"labels":{"Verified":{"approved":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"all":[{"value":0,"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},{"tag":"autogenerated:zuul:gate","value":2,"date":"2020-07-13 22:31:32.000000000","post_submit":true,"permitted_voting_range":{"min":2,"max":2},"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},{"value":0,"date":"2020-07-13 21:14:35.000000000","_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"}],"values":{"-2":"Fails","-1":"Doesn\u0027t seem to work"," 0":"No score","+1":"Works for me","+2":"Verified"},"description":"","default_value":0,"optional":true},"Code-Review":{"approved":{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},"all":[{"value":2,"date":"2020-07-10 21:48:43.000000000","permitted_voting_range":{"min":2,"max":2},"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},{"value":0,"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},{"value":0,"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"}],"values":{"-2":"Do not merge","-1":"This patch needs further work before it can be merged"," 0":"No score","+1":"Looks good to me, but someone else must approve","+2":"Looks good to me (core reviewer)"},"description":"","default_value":0,"optional":true},"Workflow":{"approved":{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},"all":[{"value":1,"date":"2020-07-13 21:21:59.000000000","permitted_voting_range":{"min":1,"max":1},"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},{"value":0,"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},{"value":0,"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"}],"values":{"-1":"Work in progress"," 0":"Ready for reviews","+1":"Approved"},"description":"","default_value":0,"optional":true}},"removable_reviewers":[],"reviewers":{"REVIEWER":[{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]}]},"pending_reviewers":{},"reviewer_updates":[{"updated":"2020-07-13 21:21:59.000000000","updated_by":{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},"reviewer":{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},"state":"REVIEWER"},{"updated":"2020-07-13 22:31:32.000000000","updated_by":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"reviewer":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"state":"REVIEWER"}],"messages":[{"id":"a1d6e71658cd9e250df2ad1164a29d2765a1931a","author":{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},"date":"2020-06-25 21:30:02.000000000","message":"Uploaded patch set 1.","accounts_in_message":[],"_revision_number":1},{"id":"99c3b0bf2532ec4e7e3dff9dad940e37465e82bc","tag":"autogenerated:zuul:check","author":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"date":"2020-06-26 01:04:35.000000000","message":"Patch Set 1: Verified-1\n\n(1 comment)\n\nBuild failed (check pipeline).  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swift-multinode-rolling-upgrade https://zuul.opendev.org/t/openstack/build/787b21395e394ccba0ed72ba28500936 : FAILURE in 9m 04s (non-voting)\n- tempest-ipv6-only https://zuul.opendev.org/t/openstack/build/8b552343ea2643aaaa8a446908450938 : SUCCESS in 56m 57s","accounts_in_message":[],"_revision_number":3},{"id":"baa8c9e403dcb42e2852de5025ac75f8e7ec30b3","author":{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},"date":"2020-07-10 21:48:43.000000000","message":"Patch Set 3: Code-Review+2\n\n(6 comments)\n\nI have a high level of confidence this change makes things better without any negative side effects\n\n... but we\u0027re probably not done yet.  On master, I managed to get myself half reclaimed where the root was gone and the shards were confused:\n\ncontainer-sharder-6031: Audit warnings for shard /srv/node3/sdb3/containers/50/da6/c8308d8d284e8d21e02cf047cac69da6/c8308d8d284e8d21e02cf047cac69da6_1594417019.67052.db (.shards_AUTH_test/container-47713881-96dd-4ec0-a5ae-fdddea838c48-9aa36695c9d09e0ccd1e593d24e6f750-1594416996.75164-0): unable to get shard ranges from root\n\nNeither upgrading to this change or even recreating the root seemed to dig me out of the hole.","accounts_in_message":[],"_revision_number":3},{"id":"896f66253b1b859a0d705a8f63edb8b1b45546e0","author":{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},"date":"2020-07-13 21:14:35.000000000","message":"Patch Set 3:\n\n(4 comments)","accounts_in_message":[],"_revision_number":3},{"id":"48d9671f804be53bbdfa55a69bd4c213fe1f4f05","author":{"_account_id":1179,"name":"Clay Gerrard","email":"clay.gerrard@gmail.com","username":"clay-gerrard"},"date":"2020-07-13 21:21:59.000000000","message":"Patch Set 3: Workflow+1\n\nthis change is fall to useful to not be on master; deleting sharded dbs right now puts them into a totally wonky state where they think they\u0027re a deleted root; but also they have active shard ranges.  It\u0027s maddness.","accounts_in_message":[],"_revision_number":3},{"id":"b4ce25b53b603de181dfb7c8328d45359311b279","tag":"autogenerated:zuul:gate","author":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"date":"2020-07-13 21:22:13.000000000","message":"Patch Set 3: -Verified\n\nStarting gate jobs.","accounts_in_message":[],"_revision_number":3},{"id":"9e2df8c68c5a9a54e646ec92d6db300be6d3dba5","tag":"autogenerated:zuul:gate","author":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"date":"2020-07-13 22:31:32.000000000","message":"Patch Set 3: Verified+2\n\nBuild succeeded (gate pipeline).\n\n- openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c6ded5fa61a84257975e979568a32dc9 : SUCCESS in 11m 09s\n- grenade https://zuul.opendev.org/t/openstack/build/050f908aebff41178165fc1a1aeadcfe : SUCCESS in 59m 54s\n- tempest-integrated-object-storage https://zuul.opendev.org/t/openstack/build/6a885e1619104fb39d29408518cf070e 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tempest-ipv6-only https://zuul.opendev.org/t/openstack/build/a2e1a00f5cc147cbb6e58a42996898c9 : SUCCESS in 1h 04m 01s","accounts_in_message":[],"_revision_number":3},{"id":"a547be3d57ecfcf3e04ed1e8edfe8c6e2ebc5af9","author":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"date":"2020-07-13 22:31:32.000000000","message":"Change has been successfully merged by Zuul","accounts_in_message":[],"_revision_number":3},{"id":"6e504e71a1be62d5171639b89cb48148949cd8f7","tag":"autogenerated:zuul:promote","author":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]},"date":"2020-07-13 22:33:06.000000000","message":"Patch Set 3:\n\nBuild succeeded (promote pipeline).\n\n- promote-openstack-tox-docs https://zuul.opendev.org/t/openstack/build/43dddf0220fe497887f0458c4a2aa421 : SUCCESS in 1m 15s\n- swift-promote-image https://zuul.opendev.org/t/openstack/build/9bfd3786409f4e01bcd4daa00289788d : SUCCESS in 54s (non-voting)\n- swift-promote-image-py3 https://zuul.opendev.org/t/openstack/build/0bd86a2016ec44e18d3a9b3d4bb55155 : SUCCESS in 57s (non-voting)","accounts_in_message":[],"_revision_number":3}],"current_revision_number":3,"current_revision":"a4cf508a3859f6b37ac4d9767de38fc98cbea068","revisions":{"fbee9f0615334203aabefed8e3d7fba58047936d":{"kind":"REWORK","_number":1,"created":"2020-06-25 21:30:02.000000000","uploader":{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},"ref":"refs/changes/13/738113/1","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/swift","ref":"refs/changes/13/738113/1","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/1 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/1 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/1 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/swift refs/changes/13/738113/1"}}},"commit":{"parents":[{"commit":"d75d479cb84b745c8bbd28728b754aac41d55a8b","subject":"Merge \"Bump up probe test timeout\"","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/d75d479cb84b745c8bbd28728b754aac41d55a8b"}]}],"author":{"name":"Tim Burke","email":"tim.burke@gmail.com","date":"2020-06-25 20:42:01.000000000","tz":-420},"committer":{"name":"Tim Burke","email":"tim.burke@gmail.com","date":"2020-06-25 20:54:55.000000000","tz":-420},"subject":"Identify deleted shards as shards","message":"Identify deleted shards as shards\n\nWhen a DB gets deleted, we clear out its metadata. This included sysmeta\nsuch as that used to tell shards the name of their root DB.\n\nPreviously, this would cause deleted shards to pop back to life as roots\nthat claimed to have objects still sitting in whatever container they\nsharnk into.\n\nNow, use the metadata if it\u0027s available, but when it\u0027s not, go by the\nstate of the DB\u0027s \"own shard range\" -- deleted shards should be marked\ndeleted, while roots never are.\n\nThis allows us to actually clean up the database files; you can test\nthis by doing something like\n\n * Run `nosetests test/probe/test_sharder.py:TestContainerSharding.test_shrinking`\n * Run `find /srv/*/*/containers -name \u0027*.db\u0027` to see how many databases\n   are left on disk. There should be 15: 3 for the root container, 6 for\n   the two shards on the first pass, and another 6 for the two shards on\n   the second pass.\n * Edit container configs to decrease reclaim_age -- even 1 should be\n   fine.\n * Run `swift-init main start` to restart the servers.\n * Run `swift-init container-sharder once` to have the shards get marked\n   deleted.\n * Run `swift-init container-updater once` to ensure all containers have\n   reported.\n * Run `swift-init container-replicator once` to clean up the\n   containers.\n * Run `find /srv/*/*/containers -name \u0027*.db\u0027` again to verify no\n   containers remain on disk.\n\nChange-Id: Icba98f1c9e17e8ade3f0e1b9a23360cf5ab8c86b\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/fbee9f0615334203aabefed8e3d7fba58047936d"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/fbee9f0615334203aabefed8e3d7fba58047936d"}]},"branch":"refs/heads/master"},"1af55c0dbf4b89446c99d1c2deafc84ebb9463ef":{"kind":"REWORK","_number":2,"created":"2020-06-26 04:33:47.000000000","uploader":{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},"ref":"refs/changes/13/738113/2","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/swift","ref":"refs/changes/13/738113/2","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/swift refs/changes/13/738113/2"}}},"commit":{"parents":[{"commit":"ae85ee2474e2b4527d665327f7ddd9f6ef077659","subject":"Merge \"s3api: Allow CompleteMultipartUpload requests to be retried\"","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/ae85ee2474e2b4527d665327f7ddd9f6ef077659"}]}],"author":{"name":"Tim Burke","email":"tim.burke@gmail.com","date":"2020-06-25 20:42:01.000000000","tz":-420},"committer":{"name":"Tim Burke","email":"tim.burke@gmail.com","date":"2020-06-26 04:32:11.000000000","tz":-420},"subject":"Identify deleted shards as shards","message":"Identify deleted shards as shards\n\nWhen a DB gets deleted, we clear out its metadata. This included sysmeta\nsuch as that used to tell shards the name of their root DB.\n\nPreviously, this would cause deleted shards to pop back to life as roots\nthat claimed to have objects still sitting in whatever container they\nsharnk into.\n\nNow, use the metadata if it\u0027s available, but when it\u0027s not, go by the\nstate of the DB\u0027s \"own shard range\" -- deleted shards should be marked\ndeleted, while roots never are.\n\nThis allows us to actually clean up the database files; you can test\nthis by doing something like\n\n * Run `nosetests test/probe/test_sharder.py:TestContainerSharding.test_shrinking`\n * Run `find /srv/*/*/containers -name \u0027*.db\u0027` to see how many databases\n   are left on disk. There should be 15: 3 for the root container, 6 for\n   the two shards on the first pass, and another 6 for the two shards on\n   the second pass.\n * Edit container configs to decrease reclaim_age -- even 1 should be\n   fine.\n * Run `swift-init main start` to restart the servers.\n * Run `swift-init container-sharder once` to have the shards get marked\n   deleted.\n * Run `swift-init container-updater once` to ensure all containers have\n   reported.\n * Run `swift-init container-replicator once` to clean up the\n   containers.\n * Run `find /srv/*/*/containers -name \u0027*.db\u0027` again to verify no\n   containers remain on disk.\n\nChange-Id: Icba98f1c9e17e8ade3f0e1b9a23360cf5ab8c86b\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/1af55c0dbf4b89446c99d1c2deafc84ebb9463ef"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/1af55c0dbf4b89446c99d1c2deafc84ebb9463ef"}]},"branch":"refs/heads/master"},"a4cf508a3859f6b37ac4d9767de38fc98cbea068":{"kind":"REWORK","_number":3,"created":"2020-07-08 05:01:31.000000000","uploader":{"_account_id":15343,"name":"Tim Burke","email":"tburke@nvidia.com","username":"tburke"},"ref":"refs/changes/13/738113/3","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/swift","ref":"refs/changes/13/738113/3","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/3 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/3 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/swift refs/changes/13/738113/3 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/swift refs/changes/13/738113/3"}}},"commit":{"parents":[{"commit":"ae85ee2474e2b4527d665327f7ddd9f6ef077659","subject":"Merge \"s3api: Allow CompleteMultipartUpload requests to be retried\"","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/ae85ee2474e2b4527d665327f7ddd9f6ef077659"}]}],"author":{"name":"Tim Burke","email":"tim.burke@gmail.com","date":"2020-06-25 20:42:01.000000000","tz":-420},"committer":{"name":"Tim Burke","email":"tim.burke@gmail.com","date":"2020-07-07 23:06:28.000000000","tz":-420},"subject":"Identify deleted shards as shards","message":"Identify deleted shards as shards\n\nWhen a DB gets deleted, we clear out its metadata. This included sysmeta\nsuch as that used to tell shards the name of their root DB.\n\nPreviously, this would cause deleted shards to pop back to life as roots\nthat claimed to have objects still sitting in whatever container they\nsharnk into.\n\nNow, use the metadata if it\u0027s available, but when it\u0027s not, go by the\nstate of the DB\u0027s \"own shard range\" -- deleted shards should be marked\ndeleted, while roots never are.\n\nThis allows us to actually clean up the database files; you can test\nthis by doing something like\n\n * Run `nosetests test/probe/test_sharder.py:TestContainerSharding.test_shrinking`\n * Run `find /srv/*/*/containers -name \u0027*.db\u0027` to see how many databases\n   are left on disk. There should be 15: 3 for the root container, 6 for\n   the two shards on the first pass, and another 6 for the two shards on\n   the second pass.\n * Edit container configs to decrease reclaim_age -- even 1 should be\n   fine.\n * Run `swift-init main start` to restart the servers.\n * Run `swift-init container-sharder once` to have the shards get marked\n   deleted.\n * Run `swift-init container-updater once` to ensure all containers have\n   reported.\n * Run `swift-init container-replicator once` to clean up the\n   containers.\n * Run `find /srv/*/*/containers -name \u0027*.db\u0027` again to verify no\n   containers remain on disk.\n\nChange-Id: Icba98f1c9e17e8ade3f0e1b9a23360cf5ab8c86b\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/a4cf508a3859f6b37ac4d9767de38fc98cbea068"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/swift/commit/a4cf508a3859f6b37ac4d9767de38fc98cbea068"}]},"branch":"refs/heads/master"}},"requirements":[],"submit_records":[],"submit_requirements":[]}