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#openstack-nova - 2024-10-21
17:35:15 sean-k-mooney johnthetubaguy: https://review.opendev.org/q/topic:%22mtty_support%22
17:36:13 sean-k-mooney we need https://review.opendev.org/c/openstack/nova/+/898100/4 first ot allow using virtual devices
17:42:12 opendevreview Artom Lifshitz proposed openstack/nova master: pwr mgmt: power up instances's CPUs upon init https://review.opendev.org/c/openstack/nova/+/932926
17:42:30 sean-k-mooney fungi: the orgianl confugion arount "we dont support your usecase" came from the fact they fix the bug by adding the infra required to be able to detach an mdev via the alisa, without stating that they were actully trying to detach a volume and this just so happend to fail when the vm also had an mdev
17:43:26 sean-k-mooney they had a limited explcation of that in the bug but not in the commit message
18:15:02 fungi sean-k-mooney: thanks for the clarification, makes sense
18:16:00 fungi also worth noting, there was a chameleon cloud representative at oid-na who was talking about the possibility of making vgpu resources available for upstream testing. not sure where that will go, but something to consider
18:16:58 sean-k-mooney the issue is we cant do that with nested vir
18:17:08 sean-k-mooney i.e. we can only test it properly with baremental compute nodes
18:17:28 sean-k-mooney if you passhtough afully gpu to a vm you cant then use vgpus
18:17:44 JayF darn, too bad we don't know how to provision baremetal /s
18:18:01 JayF seriously though, having to provision baremetal is very tough in CI, it's part of why Ironic 3rd party CIs died out
18:18:04 JayF just a little high touch
18:18:25 fungi well, yeah they were talking about nova baremetal api to boot machines with vgpu-capable resources
18:18:31 fungi (i.e. ironic)
18:19:23 fungi but i agree with you about the whole safety challenge with providing root access to physical machines for untrusted job payloads
18:19:41 JayF it's not just a safety challenge, it's a challenge-challenge
18:19:58 JayF many real-world failure modes which needs human hands, or at least, non-automated intervention to fix
18:20:26 sean-k-mooney the tldr is when you passthough a fully pci device in qemu it removes all the sriov capablities because qemu did not have a way to make that work
18:20:58 sean-k-mooney for what its worth we are lookign to see if we can use our internal hardware in teh future to test specifi upstream changes
18:21:50 sean-k-mooney that woudl do a baremteally deployment of a nova compute (using ironic) with a manual triger to basicaly say "this is safe to test"
18:21:53 sean-k-mooney as a third party ci
18:22:52 JayF I think there's a lot of untapped value in that idea of on-demand testing
18:23:09 JayF we can *usually* pinpoint when we're getting close to an edge case that might need revalidation
18:23:20 sean-k-mooney but that is why we are also trying to figure out how to test without real hardware using the sample kernel dirvers for a baseline of coverage
18:24:05 sean-k-mooney for example we are enableing igb vif model in nova so tthat in the future we can use that to test sriov
18:24:40 sean-k-mooney if our providers can provide neutron ports with igb vif model in the future we can fully test sriov in the 1st party ci
18:25:16 sean-k-mooney unfrogually it needs a new enough nova/qemu but by 2026.1 we might be in a position to do that
18:25:32 sean-k-mooney *unfortunetly
19:04:37 opendevreview Artom Lifshitz proposed openstack/nova master: pwr mgmt: power up instances's CPUs upon init https://review.opendev.org/c/openstack/nova/+/932926
19:54:32 opendevreview sean mooney proposed openstack/nova master: Add repoducer test for bug 2074219 https://review.opendev.org/c/openstack/nova/+/932930
19:54:33 opendevreview sean mooney proposed openstack/nova master: Fix detaching devices by alias with mdevs https://review.opendev.org/c/openstack/nova/+/932931
19:55:09 sean-k-mooney JayF: johnthetubaguy: fungi: ^ that is the actual correct fix and what i was asking for in that review
20:13:03 fungi awesome!
#openstack-nova - 2024-10-22
06:10:40 opendevreview Aleksandr Chudinov proposed openstack/nova master: Fix instance snapshot min disk size after instance resize https://review.opendev.org/c/openstack/nova/+/931737
07:24:01 opendevreview Takashi Kajinami proposed openstack/nova master: Deprecate [wsgi] secure_proxy_ssl_header https://review.opendev.org/c/openstack/nova/+/817927
07:24:06 opendevreview Takashi Kajinami proposed openstack/nova master: Deprecate [wsgi] secure_proxy_ssl_header https://review.opendev.org/c/openstack/nova/+/817927
07:25:48 opendevreview Takashi Kajinami proposed openstack/nova master: Deprecate [wsgi] secure_proxy_ssl_header https://review.opendev.org/c/openstack/nova/+/817927
07:26:51 opendevreview Takashi Kajinami proposed openstack/nova master: Deprecate [wsgi] secure_proxy_ssl_header https://review.opendev.org/c/openstack/nova/+/817927
07:29:06 opendevreview Takashi Kajinami proposed openstack/nova master: Drop unused parameter type validation method https://review.opendev.org/c/openstack/nova/+/909189
08:09:16 elodilles bauzas: auniyal: Uggla: if you have some time could you please review (release liaison approve) the antelope final stable release? https://review.opendev.org/c/openstack/releases/+/932406
08:14:01 mikal sean-k-mooney: I've reproposed https://review.opendev.org/c/openstack/nova-specs/+/932387 (spice-direct spec), just wondering if there's anything else I should do apart from put it in the status etherpad?
08:17:14 sean-k-mooney[m] mikal: you updated the history section so that all that was needed
08:21:40 sean-k-mooney[m] gibi: ill fix the typos in https://review.opendev.org/c/openstack/nova/+/932931/1 once i have had coffee and am actually awake. thanks for the review
08:22:11 sean-k-mooney[m] mikal: i assume the rest of the pataches are ready for review?
08:24:38 sean-k-mooney[m] im not seeing any merge conflicts or direct requests form mel that need to be addressed but also have not looked closely at the current state
08:55:23 gibi sean-k-mooney[m]: sure, just ping me after the respin and I will re-add my +2
09:02:18 gibi bauzas: when you are up, I'm wondering how much quorum the nova room will have on wednesday during the global eventlet removal discussion?
09:02:33 bauzas I'm already up :)
09:02:38 gibi o/ :)
09:02:49 bauzas gibi: that's a good question
09:03:06 gibi I would like to join to the eventlet removal discussion at least
09:03:06 bauzas that discussion will trample our own sessions
09:03:24 bauzas I was thinking it could be on Monday
09:03:25 gibi but other cores might have the same plans
09:03:26 bauzas :(
09:03:35 bauzas let's discuss then the agenda today
09:03:44 bauzas I'm currently looking at the etherpad
09:03:49 gibi yeah I think the deeper dive will be on wednesday, yesterday we only covered high level things
09:03:56 bauzas and I'll try to provide an agenda
09:04:03 gibi cool, thanks
09:04:18 gibi I have no other limitation during the week as far as I see
09:10:57 bauzas gibi: my own limitation will be on Friday due to the TC sessions :(
09:11:06 bauzas hence the agenda proposal
09:22:11 bauzas gibi: I think we have a serious problem that we need to solve about Wed
09:41:54 sean-k-mooney bauzas: gibi: i dont know if we want to discuss this at the ptg https://bugs.launchpad.net/nova/+bug/2076089 but it would be good if other could confirm or refute my assertion that we shoudl not be abel to force boot a new instance on a disabled compute
09:42:17 bauzas sean-k-mooney: the agenda is now fully packed tbh
09:42:22 sean-k-mooney as far as i am aware we made an intentional decsion to prevent this
09:42:32 sean-k-mooney bauzas: that fine its a bug so we can discuss it async
09:42:34 bauzas the eventlet-removal session just ate all the left time
09:42:40 sean-k-mooney i just want to spread awareness of it
09:44:02 sean-k-mooney im basically asking for a sanity check to ensure im not off base when i say this is not a bug. we can put it on the next team meeting adgenda too if we like
09:44:09 bauzas well
09:44:22 bauzas the forced AZ hack was the usual way for ops to test new computes
09:44:36 sean-k-mooney right but not disabled hosts
09:44:45 bauzas no, even disabled ones
09:44:56 sean-k-mooney that was definetly a bug then
09:45:09 sean-k-mooney i.e that that ever worked
09:45:21 bauzas yeah, for me it looks to me a regression
09:45:39 sean-k-mooney im saying we should not allow that to happen and that i dont condier this a regression
09:46:01 sean-k-mooney if the az hack worked in the past tha that was a bug IMO
09:46:09 bauzas because when you want to verify that your new compute works fine, then you just use the AZ hack for it
09:46:36 bauzas you just make sure that when you create the new compute, it's disabled first
09:46:54 sean-k-mooney your you regerster it as disabeld and add it to a host aggreate restricted to your tenent and then enable it
09:48:23 bauzas hum, no, in general you just disable the host, and then you create new instances using the AZ hack
09:48:39 sean-k-mooney bauzas: the az hack is not ment to force a host bypasssing all schdulign
09:48:41 bauzas once you're sure it works, then you delete the instances and the enable the host, that's it
09:49:06 bauzas sean-k-mooney: trust me, this is why I say this is a hack :)
09:49:33 sean-k-mooney bauzas: right so i object to reintroducing that broken behavior if its what we had in the past
09:49:39 sean-k-mooney as i said i condier it a bug
09:50:00 sean-k-mooney so if we want to fix it i want to be conviced why that is accapable to bypass placment
09:50:54 bauzas https://github.com/openstack/nova/blob/master/nova/compute/api.py#L593
09:51:11 sean-k-mooney the reporter confirmed the existing behavior (where its rejected) exists as far back as zed
09:51:18 sean-k-mooney meaning that all stable release have the current behavior
09:52:00 sean-k-mooney bauzas: right i have used that in the past but that was nto inteded to ignore if its disabeld.
09:53:30 bauzas that's because the forced host values are not checking the filters
09:53:46 bauzas but... the pre-filters actually check them
09:53:55 bauzas hence the change
09:53:55 sean-k-mooney the prefilters run before the filters
09:54:00 bauzas correct, hence the bug

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