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#openstack-nova - 2026-03-02
17:11:09 Uggla gibi thanks to you, we have one more bug triaged !
17:12:22 tkajinam gmaan, regarding that novaclient tests update, do you know any stestr magic to avoid specific tests from being executed concurrently ?
17:12:25 tkajinam https://opendev.org/openstack/python-novaclient/src/branch/master/novaclient/tests/functional/v2/test_quota_classes.py#L79-L107
17:13:14 tkajinam the problem is that there are few tests accessing quota-class and if we use only the default one then we should refactor these to avoid conflicts among these
17:15:06 tkajinam I'll look into that tomorrow but the test update looks tricky for me now
17:18:53 sean-k-mooney tkajinam: for what its worth even in queens we have notes stating that only the default classs is supproted by nova
17:18:55 sean-k-mooney https://docs.openstack.org/nova/queens/admin/quotas.html#to-update-quota-values-for-an-existing-project
17:21:16 sean-k-mooney https://that.guru/blog/quotas-in-openstack/#quota-classes looking at the history the supprot for this was ripped out in ocata and there was never eally any intree supprot
17:21:57 gmaan tkajinam: for quota concurrent tests, I think you can use LockFixture like tempest is doing https://github.com/search?q=repo%3Aopenstack%2Ftempest%20compute_quotas&type=code
17:23:14 gmaan doing it via stestr also possible but that will be more complicated of grouping them and running in serial mode
17:25:45 sean-k-mooney ya porting the serial decorator is one approch
17:39:22 opendevreview Dominik proposed openstack/nova-specs master: Repurpose NUMA Topology with Resource Providers for 2026.2 https://review.opendev.org/c/openstack/nova-specs/+/978570
18:29:12 Zhan[m] Hi friends, I have a quick question. Does Nova allow launching/live-migrating VMs to a host with nova-compute disabled? For example, if I want to do a QC before putting the host back to service, I can launch a VM on there with elevated privileges (e.g., using admin credential), make sure everything works, and then finally enable nova-compute.
18:31:30 sean-k-mooney Zhan[m]: no. disbaling a compute node exist to prevent schdulign to the host
18:31:48 sean-k-mooney we enforce this with a frobiden trait via a placment prefilter
18:33:03 sean-k-mooney https://github.com/openstack/nova/blob/master/nova/scheduler/request_filter.py#L243-L255
18:34:06 Zhan[m] Yeah I saw that earlier too. So the only way is to enable it, launch a VM, disable it, make sure everything's correct, and then re-enable it?
18:34:58 sean-k-mooney normlaly i would suggest using somethign else liek a requried trait to isolate the host or teh tenat affinity filter for exmaple
18:35:15 sean-k-mooney i.e. test it by addign teh host to a host aggreate that can only be used by the admin project
18:35:46 sean-k-mooney https://docs.openstack.org/nova/latest/admin/aggregates.html#tenant-isolation-with-placement
18:36:40 sean-k-mooney so restirct it to your admin project, renebaled it, test it adn then eitehr remove it form teh aggreate or disable it again to do futher maintance
18:36:47 Zhan[m] ahh I see, something like a "maintenance" aggregate where only admin can access
18:36:56 sean-k-mooney yep exactly
18:37:00 Zhan[m] I see, thanks!
18:38:16 sean-k-mooney having a third sate enabeld,disabled and maintance woudl perhaps have been a cleaner way to do that but you can emulate that with aggreates
18:40:34 Zhan[m] I think having a third state make sense too, but both approaches solve the same problem ultimately. Wondering if that can be something to discuss and maybe implement, or aggregate is still the recommended way to go?
18:43:08 Zhan[m] It would be good to put this info somewhere, I can imagine others having this question too.
18:47:37 dansmith being able to target disabled hosts seems reasonable to me, without requiring the aggregate thing
18:47:47 dansmith like, if an admin has disabled a host to prevent regular users from scheduling to it,
18:48:06 dansmith but has (of course) the permission to target hosts specifically either with a boot or a migration,
18:48:16 dansmith it seems totally reasonable to ignore the disabled check for that case
18:48:42 dansmith like if I need to disable a failing host, then send a build to it to see if I've fixed it before I let others go there
18:48:58 dansmith or I disable a host to prevent it from filling up so I can emergency migrate instances to it to escape a failing node
18:49:30 Zhan[m] yeah I was actually thinking about replacing the ComputeFilter by a custom filter that will say OK to a disabled host if it's admin and state is up and destination is explicitly specified, until I found that mandatory pre-filter.
18:49:52 dansmith yeah, the pre-filter could do the same
18:53:15 Zhan[m] yeah, I think we can do something in nova that does "if admin (or policy-allowed-role) and if host is specified and if state it up", remove that specific pre-filter?
18:53:47 Zhan[m] imo a third state or this approach both seem fine, just that the prior one may need more changes
18:58:48 sean-k-mooney so it used to be possibel before the pre-filter with --force
18:58:56 sean-k-mooney btu that was because that bypassed everything
18:59:08 sean-k-mooney inclduign the status check provide the compute node existed
18:59:26 Zhan[m] yeah probably not a good idea...
19:02:48 Zhan[m] Any thoughts? Maybe I should do a bug report or a spec?
19:03:44 sean-k-mooney proably a small spec. as its sort of an api change. it is an api change if we had a new state its techinally a policy change adn or cofnig option if we take the other approch
19:03:50 sean-k-mooney so not a bug
19:04:09 Zhan[m] okie dokie, I'll work on it and list all approaches
19:04:19 sean-k-mooney but its not a super invaisve feature given it woudl be highly restrict to admins by default
19:05:52 Zhan[m] definitely, if we add a policy then role will likely be admin by default too. but it's good to have it configurable as folks may create dedicated role for maintenance
19:07:15 sean-k-mooney ya i was debating if the manager role would make sense but i dont think so. but if we have a new policy rule and defautl it to admin then operators can alwasy confirure it to the role they perfer
19:08:06 sean-k-mooney one thing that is not clear to me is if admin shoudl jsut alwasy bypass the check or if this shoudl be opt in either by updating the role or a config option
19:08:23 sean-k-mooney for cross cell migrate we dont even allow admins to do that by default
19:08:40 sean-k-mooney they have ot enable it via custom policy if they want to supprot that in the cloud so this coudl be the same
19:15:07 Zhan[m] I would advocate for including admin in the new policy (default admin too) instead of making it always bypass as it's just very clear & straight forward, people won't need to guess or look at code to know "ok admin can do this".
19:15:24 Zhan[m] I'll put both option in the spec regardless
#openstack-nova - 2026-03-03
08:44:28 gibi Uggla: melwitt: I see an increased amount of openstack-tox-cover timeouts https://zuul.opendev.org/t/openstack/builds?job_name=openstack-tox-cover&project=openstack/nova is this potentially related to Iec0a9e38f3641e973894748ab2a14d1bd838e904 ?
08:47:02 opendevreview OpenStack Release Bot proposed openstack/os-vif stable/2026.1: Update .gitreview for stable/2026.1 https://review.opendev.org/c/openstack/os-vif/+/978643
08:47:04 opendevreview OpenStack Release Bot proposed openstack/os-vif stable/2026.1: Update TOX_CONSTRAINTS_FILE for stable/2026.1 https://review.opendev.org/c/openstack/os-vif/+/978644
08:47:06 opendevreview OpenStack Release Bot proposed openstack/os-vif master: Update master for stable/2026.1 https://review.opendev.org/c/openstack/os-vif/+/978645
08:47:17 opendevreview OpenStack Release Bot proposed openstack/osc-placement stable/2026.1: Update .gitreview for stable/2026.1 https://review.opendev.org/c/openstack/osc-placement/+/978646
08:47:19 opendevreview OpenStack Release Bot proposed openstack/osc-placement stable/2026.1: Update TOX_CONSTRAINTS_FILE for stable/2026.1 https://review.opendev.org/c/openstack/osc-placement/+/978647
08:47:21 opendevreview OpenStack Release Bot proposed openstack/osc-placement master: Update master for stable/2026.1 https://review.opendev.org/c/openstack/osc-placement/+/978648
08:47:32 opendevreview OpenStack Release Bot proposed openstack/python-novaclient stable/2026.1: Update .gitreview for stable/2026.1 https://review.opendev.org/c/openstack/python-novaclient/+/978649
08:47:34 opendevreview OpenStack Release Bot proposed openstack/python-novaclient stable/2026.1: Update TOX_CONSTRAINTS_FILE for stable/2026.1 https://review.opendev.org/c/openstack/python-novaclient/+/978650
08:47:37 opendevreview OpenStack Release Bot proposed openstack/python-novaclient master: Update master for stable/2026.1 https://review.opendev.org/c/openstack/python-novaclient/+/978651
08:49:42 opendevreview Balazs Gibizer proposed openstack/nova master: [openstack-tox-cover]Increase timeout https://review.opendev.org/c/openstack/nova/+/978652
08:50:02 gibi Uggla: melwitt: ^^ bumping the timeout higher
08:50:22 gibi bauzas: stephenfin: sean-k-mooney: ^^ if you are around to land this gate fixing change
09:20:44 stephenfin gibi: ack, done
09:32:24 opendevreview Merged openstack/osc-placement master: Update master for stable/2026.1 https://review.opendev.org/c/openstack/osc-placement/+/978648
09:35:29 opendevreview Merged openstack/os-vif master: Update master for stable/2026.1 https://review.opendev.org/c/openstack/os-vif/+/978645
09:58:16 opendevreview Dominik proposed openstack/nova master: NUMA Topology with Resource Providers: Libvirt NUMA Migrate https://review.opendev.org/c/openstack/nova/+/971177
10:01:51 sean-k-mooney gibi: looks lik it merged
10:01:57 sean-k-mooney well appoved
10:38:56 opendevreview Dominik proposed openstack/nova master: NUMA Topology with Resource Providers: Object changes https://review.opendev.org/c/openstack/nova/+/978209
11:21:17 opendevreview Stephen Finucane proposed openstack/nova master: Migrate coverage configuration to pyproject https://review.opendev.org/c/openstack/nova/+/978737
11:21:17 opendevreview Stephen Finucane proposed openstack/nova master: Enable sysmon core https://review.opendev.org/c/openstack/nova/+/978738
11:21:48 stephenfin gibi: melwitt: That ☝️ needs more investigation, but it might be an option for speeding up our coverage tests
11:23:24 stephenfin Ideally we'd run on py314 since we get the faster profiler *and* branch coverage, but we're a bit awat from that
11:23:56 sean-k-mooney so 3.14 is currently failing on some oslo.service issues with how we init the backend
11:24:09 sean-k-mooney we shoudl fix that as soon as we can to get that job passign then sure
11:25:21 sean-k-mooney stephenfin: i replied in the review but swaping to sysmon si not a good trade off if it woudl prevent use testing with threaded mode
11:25:53 sean-k-mooney early next cycle that will be the defualt for nova-compute as well and its already the defautl for the api, schduler and conductor i bleive
11:26:52 sean-k-mooney so anything that would make it harder to have the tox target test how we deploy in production (in threaded mode) next cycle woudl be a regression even if its faster
11:28:40 sean-k-mooney the first commit im +2 on
11:29:39 sean-k-mooney the second might want to wait until we can run it on py3.14 as you said. its now aviabel in the gate but we need to get 3.14 in general passing first
11:37:50 opendevreview Dominik proposed openstack/nova master: NUMA Topology with Resource Providers: Scheduler changes https://review.opendev.org/c/openstack/nova/+/971176
12:02:22 opendevreview Dominik proposed openstack/nova master: NUMA Topology with Resource Providers: Libvirt NUMA Migrate https://review.opendev.org/c/openstack/nova/+/971177
12:05:12 opendevreview Merged openstack/nova master: Rename deadline parameter to more accurate timeout https://review.opendev.org/c/openstack/nova/+/957411
12:12:23 opendevreview Dominik proposed openstack/nova master: Regression test for Placement allocations remaining during failed schedule https://review.opendev.org/c/openstack/nova/+/969251
12:14:48 opendevreview Merged openstack/os-vif stable/2026.1: Update .gitreview for stable/2026.1 https://review.opendev.org/c/openstack/os-vif/+/978643
12:15:19 opendevreview Merged openstack/osc-placement stable/2026.1: Update .gitreview for stable/2026.1 https://review.opendev.org/c/openstack/osc-placement/+/978646
12:15:31 opendevreview Merged openstack/os-vif stable/2026.1: Update TOX_CONSTRAINTS_FILE for stable/2026.1 https://review.opendev.org/c/openstack/os-vif/+/978644
12:19:27 opendevreview Merged openstack/osc-placement stable/2026.1: Update TOX_CONSTRAINTS_FILE for stable/2026.1 https://review.opendev.org/c/openstack/osc-placement/+/978647
14:08:47 opendevreview Doug Goldstein proposed openstack/nova master: return error about external network to the user on build failure https://review.opendev.org/c/openstack/nova/+/972601
14:36:30 nicolairuckel gibi, elodilles: You said I should use `git cherry-pick -x` for backporting. I'm getting merge conflicts though and according to the man page of cherry-pick that `-x` only works if there are no conflicts. Is this a problem or can I just fix my merge conflicts and create a new merge request?
14:41:45 dansmith nicolairuckel: -x has nothing to do with conflicts.. the man page is describing a style not a rule (incorrectly, IMHO)
14:42:14 dansmith nicolairuckel: you must use -x for openstack regardless of conflicts.. and you're going to have conflicts. you just need to resolve them manually
14:42:59 nicolairuckel okay, thanks
14:43:24 elodilles nicolairuckel: as dansmith says :) also when resolving conflicts please keep "Conflicts" lines in the commit message to help reviewers (e.g. https://review.opendev.org/c/openstack/nova/+/686292 )
14:45:06 nicolairuckel got it
14:58:04 opendevreview Nicolai Ruckel proposed openstack/nova stable/2025.2: Preserve UEFI NVRAM variable store https://review.opendev.org/c/openstack/nova/+/978766

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