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#openstack-nova - 2025-12-09
12:15:39 sean-k-mooney can you check fi you see both?
12:16:38 noonedeadpunk yes, I see CUSTOM_GPU_PASSTHROUGH and COMPUTE_MANAGED_PCI_DEVICE traits on both parent and childs
12:16:48 noonedeadpunk but not the resource_class
12:17:05 sean-k-mooney well the resouce class shoul be the resouce class in the invetnotry
12:17:11 noonedeadpunk But resource class should not be in traits iirc
12:17:18 sean-k-mooney correct
12:17:27 sean-k-mooney if you do an inventory show on the rp you shoudl see it there
12:17:42 noonedeadpunk openstack resource class show CUSTOM_A10_FULL returns the name, yes
12:20:57 noonedeadpunk I kinda failing to understand at what point `self.roots_by_uuid` is expected to be populated
12:22:16 sean-k-mooney https://opendev.org/openstack/nova/src/commit/8a4b000216c7a6c2673af78d7eb7f9bf938dc867/nova/compute/provider_tree.py#L292
12:22:17 noonedeadpunk it does not look like it's cached, or populated during instance create request
12:22:47 noonedeadpunk but according to trace it's not called?
12:22:50 sean-k-mooney it can be populated in othere wase too
12:23:10 sean-k-mooney the tace doe not actully show a specific error
12:23:20 sean-k-mooney just that the child rp was nto found
12:23:43 sean-k-mooney i assume this si repoabale i.e. if yuou restart the nova comptue agent it happens again
12:24:02 noonedeadpunk well, I used epdb, and self.roots is dict_values([])
12:24:10 noonedeadpunk yes, sure
12:24:43 sean-k-mooney its returnnign the values mapping of the dict yes
12:25:17 noonedeadpunk and self.roots_by_uuid is {}
12:25:27 sean-k-mooney this shoudl be updated in memory as part fo init_host
12:25:31 noonedeadpunk so it feels that it's not populated in fact...
12:26:23 sean-k-mooney so during init_host we end up running update_aviable_resocues which populates the resouce tacker and caches the provieder tree
12:27:28 sean-k-mooney this should be poplulated before we ever get to _build_and_run_instance
12:29:36 noonedeadpunk unless class is not re-inited at some point....
12:36:28 opendevreview Dominik proposed openstack/nova master: Regression test for Placement allocations remaining during failed schedule https://review.opendev.org/c/openstack/nova/+/969251
12:36:50 opendevreview Dominik proposed openstack/nova master: Remove Placement allocations in the broken build cleanup https://review.opendev.org/c/openstack/nova/+/968446
12:38:36 DominikDanelski[m] sean-k-mooney: All right, I added a comment explaining why the exact flavour doesn't matter, so now all discussion is resolved.
12:39:33 noonedeadpunk sean-k-mooney: so I reverted 78be1679312768383b684fa70ca4d2f5c4e35fa9 and instance become spawning normally :(
12:40:16 noonedeadpunk will submit a bug report in the meanwhile I guess
12:40:38 sean-k-mooney an do they have allcoation against the placemetn RPs for the gpu usage?
12:41:00 sean-k-mooney i..e there were no other sideffects?
12:41:21 sean-k-mooney im wondering if we are misisng a fix for one of the ohter caching bugs related to OTU devices
12:41:28 sean-k-mooney in the sable branch
12:41:45 sean-k-mooney gibi and dan were fixing some other bugs around the same time
12:44:10 noonedeadpunk it looks fine? https://paste.openstack.org/show/bj8ZZgxzHSYHZF2hGFvg/
12:45:00 noonedeadpunk hm, maybe I am missing some backport...
12:45:47 noonedeadpunk nah, I think we're on current HEAD of 2025.1
12:47:37 sean-k-mooney ya that looks correct to me too
13:00:02 noonedeadpunk created report https://bugs.launchpad.net/nova/+bug/2134469
13:21:04 DominikDanelski[m] sean-k-mooney: Sorry, then do I understand correctly what you wrote at 12:55 that if I replied to the comment but made no code changes, just as I did now, you wouldn't be informed about it?
13:31:35 DominikDanelski[m] I wouldn't want to constantly bug you here, but then I don't know to best reach you when I reply.
13:50:47 sean-k-mooney DominikDanelski[m]: so every unless you adjust it in you settings if your on a review (reviewwr or cc) you will get an email every time somone comments or pushes a new patch
13:51:32 sean-k-mooney DominikDanelski[m]: and it show up with your name rater then zuul in the from
13:51:42 sean-k-mooney i.e. Dominik (Code Review)
13:51:58 sean-k-mooney so i will be notifed by ether a comment or a new aptchset
13:52:18 sean-k-mooney i just might not see it for a while depending on how often i check my email
15:26:04 nicolairuckel I'm a bit lost trying to figure out which code gets called for a cold migration. There is the `_cold_migrate` function in manager.py but I kind of expected a call to the driver at some point where I could copy the NVRAM but I can't find anything like that. Am I overlooking something or am I on the wrong track to begin with?
15:48:14 tkajinam nicolairuckel, check migrate_disk_and_power_off in LibvirtDriver
15:48:30 tkajinam I think nova internally calls resize method
17:15:01 nicolairuckel tkajinam: Hm, that's what I tried first but it didn't work. I'm going to check it again. Maybe I did something wrong when I was testing it. Thank you.
18:03:12 opendevreview Nicolai Ruckel proposed openstack/nova master: Preserve UEFI NVRAM variable store https://review.opendev.org/c/openstack/nova/+/959682
18:04:31 nicolairuckel I pushed my attempt so maybe someone else sees anything that is obviously wrong there.
18:56:50 nicolairuckel This is what I tried: https://review.opendev.org/c/openstack/nova/+/959682/comment/2c08400d_baac062c/
19:31:32 opendevreview Zhan Zhang proposed openstack/nova-specs master: Refine network setup procedure in live migrations https://review.opendev.org/c/openstack/nova-specs/+/970298
19:35:52 Zhan[m] sean-k-mooney: As we previously discussed I've submitted the spec for https://bugs.launchpad.net/nova/+bug/2128665, unfortunately didn't make it for 2026.1 so this will be in 2026.2.
19:42:49 opendevreview Zhan Zhang proposed openstack/nova-specs master: Refine network setup procedure in live migrations https://review.opendev.org/c/openstack/nova-specs/+/970298
19:54:16 opendevreview Zhan Zhang proposed openstack/nova-specs master: Refine network setup procedure in live migrations https://review.opendev.org/c/openstack/nova-specs/+/970298
#openstack-nova - 2025-12-10
03:07:46 opendevreview yangjianfeng proposed openstack/nova master: Fix missing allocations due to unsuccessful evacuations https://review.opendev.org/c/openstack/nova/+/970335
05:10:42 opendevreview ChungWon Lee proposed openstack/nova master: Fix error when multiple security group in a project with same name https://review.opendev.org/c/openstack/nova/+/970337
05:15:20 opendevreview Rajesh Tailor proposed openstack/nova master: Add functional reproducer for bug 2096884 https://review.opendev.org/c/openstack/nova/+/970238
05:46:40 opendevreview ChungWon Lee proposed openstack/nova master: Fix error when multiple security group in a project with same name https://review.opendev.org/c/openstack/nova/+/970337
08:02:59 cw0306-lee[m] Hi, nova team!... (full message at <https://matrix.org/oftc/media/v1/media/download/ATEBK2ecPfYUpbLTNfvf7ZZI5ImOneLHiJwCBCzpzpfS8rYqhQHpXqp3Yg5cVsWTSml0Rob0cV8Er3o0OIgJL7RCebT2H1TAAG1hdHJpeC5vcmcvVEJRdG5zdmxzcHBvRElxTWhxYndZdFRT>)
09:06:43 opendevreview Rajesh Tailor proposed openstack/nova master: Clean up volume attachments when server create fails https://review.opendev.org/c/openstack/nova/+/970350
10:00:51 opendevreview Rajesh Tailor proposed openstack/nova master: Clean up volume attachments when server create fails https://review.opendev.org/c/openstack/nova/+/970350
13:16:20 opendevreview Rajesh Tailor proposed openstack/nova master: Clean up volume attachments when server create fails https://review.opendev.org/c/openstack/nova/+/970350
14:33:39 sean-k-mooney ratailor: melwitt ^ https://review.opendev.org/c/openstack/nova/+/970350 looks like a a duplciate or related to work started by DominikDanelski[m] on https://bugs.launchpad.net/nova/+bug/2132020 in https://review.opendev.org/c/openstack/nova/+/969251/6 and https://review.opendev.org/c/openstack/nova/+/968446/3
14:35:48 sean-k-mooney ratailor: melwitt the quta exceed part of https://bugs.launchpad.net/nova/+bug/2096884 is likely a sideeffect of the fact we do nto delete the allcoation when the server errors out as reported in https://bugs.launchpad.net/nova/+bug/2132020
17:14:12 JayF https://review.opendev.org/c/openstack/nova/+/969833 is proposed for stable/2024.2, +2'd already by Elod, V+1, ready to merge. Please help me land it?
17:17:39 sean-k-mooney sure
17:18:37 sean-k-mooney JayF: done
17:18:46 JayF thank you
17:18:57 JayF now to wonder into the unmaintained wastes to land it further :P
17:20:00 sean-k-mooney i intentially do not have merge rights there so this is as far as i cna help but i think elod still does and we dont enforce mutliple +2 there so once this is merge they can probly hlep with older branches
17:20:13 JayF I am unmaintained core as well :D
17:20:24 JayF I put the link (https://review.opendev.org/c/openstack/nova/+/970448) for 2024.1 in #openstack-unmaintained
18:10:41 noonedeadpunk sooo... about https://review.opendev.org/c/openstack/nova-specs/+/900296/13/specs/2026.1/approved/cross-az-instance-scheduling.rst
18:11:01 noonedeadpunk just to be clear - should I be adding 409 to catch AZ conflict or not?
18:11:38 noonedeadpunk and also - I'm not sure about this one - does nova allows a VM to be a member of multiple server groups?
18:56:05 opendevreview Merged openstack/nova stable/2024.2: [ironic] Ensure unprovision happens for new states https://review.opendev.org/c/openstack/nova/+/969833
#openstack-nova - 2025-12-11
06:42:50 opendevreview yangjianfeng proposed openstack/nova master: Fix missing allocations due to unsuccessful evacuations https://review.opendev.org/c/openstack/nova/+/970335
07:21:07 opendevreview huanhongda proposed openstack/nova master: live migration: Complete cleanup if post_live_migration fails https://review.opendev.org/c/openstack/nova/+/967652
10:32:25 opendevreview yangjianfeng proposed openstack/nova master: [WIP] Fix: resources leak due to failed live-migration https://review.opendev.org/c/openstack/nova/+/970597
13:11:20 noonedeadpunk hey folks! I've started looking into multi-cell docs (https://docs.openstack.org/nova/latest/admin/cells.html) and got kind of confused by sepr conductor part. Or specifically - how to tell it that it's a superconductor?
13:11:44 noonedeadpunk As, I can imagine, conductor is able to fetch cells connection details from the api database
13:11:56 noonedeadpunk but then how to tell a cell conductor not to do that?
13:12:43 noonedeadpunk and that it should operate only with own database, and never reach api database? Just don't define api_database section?
13:13:01 noonedeadpunk And also - does it make sense to do superconductor setup at all?
13:13:30 noonedeadpunk As in RHOSP 16 docs I've seen that still it has limit of 500 hosts across all cells...
13:13:45 noonedeadpunk (which I'd guess is due to network limit, but not sure)
13:48:51 noonedeadpunk so my guess is that super conductor just has an [api_database] section, while regular conductors only [database]
14:59:03 opendevreview Julien LE JEUNE proposed openstack/nova stable/2024.2: Fix bug 2000069 https://review.opendev.org/c/openstack/nova/+/970634
15:26:09 dansmith noonedeadpunk: if you have multiple cells, you need a superconductor, or at least delegate one cell's conductors to be the superconductor function
15:28:09 sean-k-mooney noonedeadpunk: dont read teh RHOSP docs for anythign related to cells, if you do it will cuase you pain and confustion
15:28:26 sean-k-mooney noonedeadpunk: tripelo did not impelent cells well
15:28:54 sean-k-mooney the 500 limit in 16 was just that was what it was tested too
15:29:04 sean-k-mooney there is no actullly limit at 500 computes in nova
15:29:17 sean-k-mooney tripleo however had scaling issuees with 500+ servers
15:29:42 dansmith also that ^ :)
15:30:02 sean-k-mooney that was related to how it used heat and the heat -> ansible -> puppet workflow tripleo used

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