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They would have worked because the IO lock\nwould have been exchanged between controllers and paths.\nHowever, Active/Passive environments will block passive\npaths from access, ultimately preventing new locks from\nbeing established without proper negotiation. Ultimately\nrequiring multipathing *and* the agent to be smart enough\nto know to disqualify underlying paths to backend storage\nvolumes.\n\nAn additional benefit of this is active/active MPIO devices\nwill, as long as ``multipath`` is present inside the ramdisk,\nno longer possibly result in duplicate IO wipes occuring\naccross numerous devices.\n\nStory: #2010003\nTask: #45108\nResolves: rhbz#2076622\nResolves: rhbz#2070519\nChange-Id: I0fd6356f036d5ff17510fb838eaf418164cdfc92\n(cherry picked from commit 014d37743a3b5694e0e2a3cabfafe885417172d5)\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/9210fea1e17916a5af152c621eadf5e1933c64af"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/9210fea1e17916a5af152c621eadf5e1933c64af"}]},"branch":"refs/heads/stable/xena"},"9ec373fc9fe4fca36a1454e85662eda2b504664f":{"kind":"REWORK","_number":2,"created":"2022-06-07 09:47:27.000000000","uploader":{"_account_id":23851,"name":"Riccardo Pittau","email":"elfosardo@gmail.com","username":"elfosardo"},"ref":"refs/changes/33/844933/2","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/ironic-python-agent","ref":"refs/changes/33/844933/2","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/2"}}},"commit":{"parents":[{"commit":"3aa5928aa47726eee865705b1378f2494017595c","subject":"Merge \"Use a pre-defined partition UUID to detect configdrive on GPT\" into stable/xena","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/3aa5928aa47726eee865705b1378f2494017595c"}]}],"author":{"name":"Julia Kreger","email":"juliaashleykreger@gmail.com","date":"2022-04-07 22:15:17.000000000","tz":-420},"committer":{"name":"Riccardo Pittau","email":"elfosardo@gmail.com","date":"2022-06-07 09:47:22.000000000","tz":120},"subject":"Multipath Hardware path handling","message":"Multipath Hardware path handling\n\nRemoves multipath base devices from consideration by\ndefault, and instead allows the device-mapper device\nmanaged by multipath to be picked up and utilized\ninstead.\n\nIn effect, allowing us to ignore standby paths *and*\nleverage multiple concurrent IO paths if so offered\nvia ALUA.\n\nIn reality, anyone who has previously built IPA with\nmultipath tooling might not have encountered issues\npreviously because they used Active/Active SAN storage\nenvironments. They would have worked because the IO lock\nwould have been exchanged between controllers and paths.\nHowever, Active/Passive environments will block passive\npaths from access, ultimately preventing new locks from\nbeing established without proper negotiation. Ultimately\nrequiring multipathing *and* the agent to be smart enough\nto know to disqualify underlying paths to backend storage\nvolumes.\n\nAn additional benefit of this is active/active MPIO devices\nwill, as long as ``multipath`` is present inside the ramdisk,\nno longer possibly result in duplicate IO wipes occuring\naccross numerous devices.\n\nStory: #2010003\nTask: #45108\nResolves: rhbz#2076622\nResolves: rhbz#2070519\nChange-Id: I0fd6356f036d5ff17510fb838eaf418164cdfc92\n(cherry picked from commit 014d37743a3b5694e0e2a3cabfafe885417172d5)\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/9ec373fc9fe4fca36a1454e85662eda2b504664f"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/9ec373fc9fe4fca36a1454e85662eda2b504664f"}]},"branch":"refs/heads/stable/xena"},"faf2ee2df8ddf3cba80eaa8acbd8b0cf0225ee10":{"kind":"REWORK","_number":3,"created":"2022-06-09 13:21:38.000000000","uploader":{"_account_id":23851,"name":"Riccardo Pittau","email":"elfosardo@gmail.com","username":"elfosardo"},"ref":"refs/changes/33/844933/3","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/ironic-python-agent","ref":"refs/changes/33/844933/3","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/3 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/3 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/3 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/ironic-python-agent refs/changes/33/844933/3"}}},"commit":{"parents":[{"commit":"345d45950f9175873897bcc510cd93177c9c6972","subject":"Collect a full lsblk output in the ramdisk logs","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/345d45950f9175873897bcc510cd93177c9c6972"}]}],"author":{"name":"Julia Kreger","email":"juliaashleykreger@gmail.com","date":"2022-04-07 22:15:17.000000000","tz":-420},"committer":{"name":"Riccardo Pittau","email":"elfosardo@gmail.com","date":"2022-06-09 13:21:27.000000000","tz":120},"subject":"Multipath Hardware path handling","message":"Multipath Hardware path handling\n\nRemoves multipath base devices from consideration by\ndefault, and instead allows the device-mapper device\nmanaged by multipath to be picked up and utilized\ninstead.\n\nIn effect, allowing us to ignore standby paths *and*\nleverage multiple concurrent IO paths if so offered\nvia ALUA.\n\nIn reality, anyone who has previously built IPA with\nmultipath tooling might not have encountered issues\npreviously because they used Active/Active SAN storage\nenvironments. They would have worked because the IO lock\nwould have been exchanged between controllers and paths.\nHowever, Active/Passive environments will block passive\npaths from access, ultimately preventing new locks from\nbeing established without proper negotiation. Ultimately\nrequiring multipathing *and* the agent to be smart enough\nto know to disqualify underlying paths to backend storage\nvolumes.\n\nAn additional benefit of this is active/active MPIO devices\nwill, as long as ``multipath`` is present inside the ramdisk,\nno longer possibly result in duplicate IO wipes occuring\naccross numerous devices.\n\nStory: #2010003\nTask: #45108\nResolves: rhbz#2076622\nResolves: rhbz#2070519\nChange-Id: I0fd6356f036d5ff17510fb838eaf418164cdfc92\n(cherry picked from commit 014d37743a3b5694e0e2a3cabfafe885417172d5)\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/faf2ee2df8ddf3cba80eaa8acbd8b0cf0225ee10"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/ironic-python-agent/commit/faf2ee2df8ddf3cba80eaa8acbd8b0cf0225ee10"}]},"branch":"refs/heads/stable/xena"}},"requirements":[],"submit_records":[{"status":"CLOSED","labels":[{"label":"Verified","status":"OK","applied_by":{"_account_id":22348,"name":"Zuul","username":"zuul","tags":["SERVICE_USER"]}},{"label":"Code-Review","status":"OK","applied_by":{"_account_id":15519,"name":"Iury Gregory Melo Ferreira","display_name":"Iury Gregory","email":"iurygregory@gmail.com","username":"iurygregory"}},{"label":"Workflow","status":"OK","applied_by":{"_account_id":15519,"name":"Iury Gregory Melo Ferreira","display_name":"Iury Gregory","email":"iurygregory@gmail.com","username":"iurygregory"}},{"label":"Backport-Candidate","status":"MAY"}]}],"submit_requirements":[{"name":"Verified","status":"SATISFIED","is_legacy":true,"submittability_expression_result":{"expression":"label:Verified\u003dCustom-Rule","fulfilled":true,"status":"PASS","passing_atoms":["label:Verified\u003dCustom-Rule"],"failing_atoms":[],"atom_explanations":{}}},{"name":"Workflow","status":"SATISFIED","is_legacy":true,"submittability_expression_result":{"expression":"label:Workflow\u003dCustom-Rule","fulfilled":true,"status":"PASS","passing_atoms":["label:Workflow\u003dCustom-Rule"],"failing_atoms":[],"atom_explanations":{}}},{"name":"Code-Review","status":"SATISFIED","is_legacy":true,"submittability_expression_result":{"expression":"label:Code-Review\u003dCustom-Rule","fulfilled":true,"status":"PASS","passing_atoms":["label:Code-Review\u003dCustom-Rule"],"failing_atoms":[],"atom_explanations":{}}}]}