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#openstack-nova - 2021-05-19
09:33:54 ignaziocassano So, the solution at this time is waiting for someone solves the bug, right ?
09:33:54 ignaziocassano So, the solution at this time is waiting for someone solves the bug, right ?
09:34:18 kashyap ignaziocassano: Not really; as upstream QEMU claims these problems should not occur with newer QEMU releases
09:34:18 kashyap ignaziocassano: Not really; as upstream QEMU claims these problems should not occur with newer QEMU releases
09:34:47 kashyap But if you can generate a reproducer that'll help. But usually reproducers in this case are difficult to come by.
09:34:47 kashyap But if you can generate a reproducer that'll help. But usually reproducers in this case are difficult to come by.
09:35:22 ignaziocassano kashyap: let me know if I am wrong: new qemu version come with centos 8, right ?
09:35:22 ignaziocassano kashyap: let me know if I am wrong: new qemu version come with centos 8, right ?
09:35:54 kashyap ignaziocassano: Yes. Or even a potentially updated QEMU on CentOS7 (if you're running older ones; I haven't checked)
09:35:55 kashyap ignaziocassano: Yes. Or even a potentially updated QEMU on CentOS7 (if you're running older ones; I haven't checked)
09:37:56 ignaziocassano kashyap: I am running the last available for centos 7 repos. I cannot migrate to centos 8 before upgrading to train, but with train there is another bug for live migration because loss packages during it
09:37:56 ignaziocassano kashyap: I am running the last available for centos 7 repos. I cannot migrate to centos 8 before upgrading to train, but with train there is another bug for live migration because loss packages during it
09:38:57 ignaziocassano I stein I solved with Seean Mooney workaround to force port legacy binding. On train I have not found any workaround yet
09:38:57 ignaziocassano I stein I solved with Seean Mooney workaround to force port legacy binding. On train I have not found any workaround yet
09:39:32 kashyap I see; I don't know about that problem, afraid
09:39:32 kashyap I see; I don't know about that problem, afraid
09:41:11 gibi sean-k-mooney: hi! If you have time then please check https://bugs.launchpad.net/nova/+bug/1928922 Is the observation correct? If yes then why neutron sends vif-plugged before nova even requested the plug?
09:41:16 openstack Launchpad bug 1928922 in OpenStack Compute (nova) "evacuation tests in nova-live-migration post hook fails with VirtualInterfaceCreateException due to vif-plugged event received before nova starts waiting for it." [Medium,New] - Assigned to Balazs Gibizer (balazs-gibizer)
09:41:16 openstack Launchpad bug 1928922 in OpenStack Compute (nova) "evacuation tests in nova-live-migration post hook fails with VirtualInterfaceCreateException due to vif-plugged event received before nova starts waiting for it." [Medium,New] - Assigned to Balazs Gibizer (balazs-gibizer)
09:41:16 gibi sean-k-mooney: hi! If you have time then please check https://bugs.launchpad.net/nova/+bug/1928922 Is the observation correct? If yes then why neutron sends vif-plugged before nova even requested the plug?
09:42:17 ignaziocassano kashyap: thanks, I will keep informed with the bug you mentioned
09:42:17 ignaziocassano kashyap: thanks, I will keep informed with the bug you mentioned
09:52:50 openstackgerrit Stephen Finucane proposed openstack/nova stable/train: Reproduce bug 1897528 https://review.opendev.org/c/openstack/nova/+/792116
09:52:51 openstackgerrit Stephen Finucane proposed openstack/nova stable/train: Ignore PCI devices with 32bit domain https://review.opendev.org/c/openstack/nova/+/792117
09:52:52 openstack bug 1897528 in OpenStack Compute (nova) "32bit pci domain number is not supported" [High,In progress] https://launchpad.net/bugs/1897528 - Assigned to Balazs Gibizer (balazs-gibizer)
09:52:52 openstackgerrit Stephen Finucane proposed openstack/nova stable/train: Reproduce bug 1897528 https://review.opendev.org/c/openstack/nova/+/792116
09:52:53 openstack bug 1897528 in OpenStack Compute (nova) "32bit pci domain number is not supported" [High,In progress] https://launchpad.net/bugs/1897528 - Assigned to Balazs Gibizer (balazs-gibizer)
09:52:53 openstackgerrit Stephen Finucane proposed openstack/nova stable/train: Ignore PCI devices with 32bit domain https://review.opendev.org/c/openstack/nova/+/792117
10:19:51 sean-k-mooney gibi: that should be fixed now
10:19:51 sean-k-mooney gibi: that should be fixed now
10:20:36 sean-k-mooney gibi: i have not read it fully but there was a race with the neutron dhcp server
10:20:37 sean-k-mooney gibi: i have not read it fully but there was a race with the neutron dhcp server
10:20:57 sean-k-mooney gibi: what release was this
10:20:57 sean-k-mooney gibi: what release was this
10:27:10 gibi sean-k-mooney: this is from master
10:27:11 gibi sean-k-mooney: this is from master
10:27:24 gibi fairly recent master
10:27:24 gibi fairly recent master
10:28:00 sean-k-mooney i belive to stop the race you need to set a neutron config option
10:28:00 sean-k-mooney i belive to stop the race you need to set a neutron config option
10:30:22 sean-k-mooney gibi: i think https://review.opendev.org/c/openstack/nova/+/770745 should help with the issue
10:30:22 sean-k-mooney gibi: i think https://review.opendev.org/c/openstack/nova/+/770745 should help with the issue
10:30:47 sean-k-mooney but you would still need to enable https://review.opendev.org/c/openstack/neutron/+/790702/1/neutron/conf/common.py
10:30:47 sean-k-mooney but you would still need to enable https://review.opendev.org/c/openstack/neutron/+/790702/1/neutron/conf/common.py
10:31:04 sean-k-mooney [nova]/live_migration_events=true
10:31:04 sean-k-mooney [nova]/live_migration_events=true
10:31:25 sean-k-mooney gibi: i have not fully looked at the bug yet so ill do that shortly and try an confirm if its the same thing
10:31:25 sean-k-mooney gibi: i have not fully looked at the bug yet so ill do that shortly and try an confirm if its the same thing
10:31:43 sean-k-mooney gibi: but im pretty sure its https://bugzilla.redhat.com/show_bug.cgi?id=1930432
10:31:45 openstack bugzilla.redhat.com bug 1930432 in openstack-nova "Nova evacuate fails due to timeout waiting for a network-vif-plugged event for instance" [Medium,Verified] - Assigned to smooney
10:31:45 openstack bugzilla.redhat.com bug 1930432 in openstack-nova "Nova evacuate fails due to timeout waiting for a network-vif-plugged event for instance" [Medium,Verified] - Assigned to smooney
10:31:45 sean-k-mooney gibi: but im pretty sure its https://bugzilla.redhat.com/show_bug.cgi?id=1930432
10:31:46 gibi does live_migration_event affects evacutaion?
10:31:46 gibi does live_migration_event affects evacutaion?
10:33:51 sean-k-mooney kind of the patch has 2 fixes. one it only send events form the l2 agent to nova and second if fixes the filtering in nueton to allow procing the port if it has any port binding for the current host. previously it only did it for active port bindign which was wrong
10:33:51 sean-k-mooney kind of the patch has 2 fixes. one it only send events form the l2 agent to nova and second if fixes the filtering in nueton to allow procing the port if it has any port binding for the current host. previously it only did it for active port bindign which was wrong
10:34:20 sean-k-mooney gibi: are you able to repoduce this reliably
10:34:20 sean-k-mooney gibi: are you able to repoduce this reliably
10:34:37 gibi sean-k-mooney: nope, it is random and seemingly infrequent
10:34:37 gibi sean-k-mooney: nope, it is random and seemingly infrequent
10:35:21 sean-k-mooney ok i was going to suggest chanig the default of that config option since its ment to be removed in Y it shoudl default to true in Xena anyway
10:35:21 sean-k-mooney ok i was going to suggest chanig the default of that config option since its ment to be removed in Y it shoudl default to true in Xena anyway
10:35:32 sean-k-mooney and then using a depends on patch to test
10:35:32 sean-k-mooney and then using a depends on patch to test
10:35:45 sean-k-mooney but if its infrequent we might not see a difference
10:35:45 sean-k-mooney but if its infrequent we might not see a difference
10:36:58 gibi looking at the live migration fix, I think we could have a similar race during evacuation causing the vent to arrive too early
10:36:58 gibi looking at the live migration fix, I think we could have a similar race during evacuation causing the vent to arrive too early
10:37:45 sean-k-mooney gibi: one casue fo this in the past was that during evac in the ci we were previously just stoping the nova compute agent not the neutron l2 agent so wehn we did the port update it would respond
10:37:45 sean-k-mooney gibi: one casue fo this in the past was that during evac in the ci we were previously just stoping the nova compute agent not the neutron l2 agent so wehn we did the port update it would respond
10:37:58 sean-k-mooney e.g. the souce agent woudl say yep its already wired
10:37:58 sean-k-mooney e.g. the souce agent woudl say yep its already wired
10:38:10 gibi sean-k-mooney: I confirmed that the q-agt is dead on the source host during this run
10:38:10 gibi sean-k-mooney: I confirmed that the q-agt is dead on the source host during this run
10:38:12 sean-k-mooney i think we fixed that in our job
10:38:12 sean-k-mooney i think we fixed that in our job
10:38:21 sean-k-mooney ok good
10:38:21 gibi yes, it is fixed in the test
10:38:21 sean-k-mooney ok good
10:38:21 gibi yes, it is fixed in the test
10:38:35 sean-k-mooney am did we also ensure the job is not swapted to ovn
10:38:35 sean-k-mooney am did we also ensure the job is not swapted to ovn
10:38:38 sean-k-mooney i belvie we did
10:38:38 sean-k-mooney i belvie we did
10:38:50 gibi checking...
10:38:50 gibi checking...
10:41:14 sean-k-mooney it looks like ml2/ovs
10:41:14 sean-k-mooney it looks like ml2/ovs
10:41:16 gibi we only held back nova-next on ovs https://review.opendev.org/c/openstack/nova/+/776944 but nova-live-migration moved to OVN as far as I see
10:41:16 gibi we only held back nova-next on ovs https://review.opendev.org/c/openstack/nova/+/776944 but nova-live-migration moved to OVN as far as I see
10:41:47 sean-k-mooney really the build you linked to has teh screen-q-agt.txt
10:41:47 sean-k-mooney really the build you linked to has teh screen-q-agt.txt
10:43:49 sean-k-mooney i guess it has not run since the default change maybe?
10:43:49 sean-k-mooney i guess it has not run since the default change maybe?
10:43:59 gibi hm it run last week
10:43:59 gibi hm it run last week
10:44:09 gibi let me check a more recent run...
10:44:09 sean-k-mooney this was from friday yes
10:44:09 gibi let me check a more recent run...
10:44:09 sean-k-mooney this was from friday yes

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