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| gibi | #startmeeting nova | 16:00 |
|---|---|---|
| openstack | Meeting started Thu Feb 11 16:00:05 2021 UTC and is due to finish in 60 minutes. The chair is gibi. Information about MeetBot at http://wiki.debian.org/MeetBot. | 16:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 16:00 |
| *** openstack changes topic to " (Meeting topic: nova)" | 16:00 | |
| openstack | The meeting name has been set to 'nova' | 16:00 |
| gibi | o/ | 16:00 |
| gmann | o/ | 16:00 |
| artom | ~o~ | 16:00 |
| lyarwood | \o | 16:01 |
| elod | o/ | 16:01 |
| gibi | let's get started | 16:02 |
| gibi | #topic Bugs (stuck/critical) | 16:02 |
| *** openstack changes topic to "Bugs (stuck/critical) (Meeting topic: nova)" | 16:02 | |
| gibi | no critical bugs | 16:02 |
| gibi | #link 13 new untriaged bugs (+1 since the last meeting): #link https://bugs.launchpad.net/nova/+bugs?search=Search&field.status=New | 16:02 |
| stephenfin | o/ (in another meeting though) | 16:03 |
| gibi | is there any specific bug we need to talk about? | 16:03 |
| gibi | #topic Gate status | 16:04 |
| *** openstack changes topic to "Gate status (Meeting topic: nova)" | 16:04 | |
| gibi | gate feels OK to me | 16:04 |
| gibi | I know gmann fixed on of the outstanding gate failure recently | 16:04 |
| gibi | *one | 16:04 |
| gmann | gibi: do we have e-r query for that? if not i can add | 16:04 |
| gmann | to see if there is any more tests need fixes | 16:05 |
| gibi | gmann: I have to check | 16:05 |
| gmann | ok i can check. | 16:05 |
| gibi | thanks | 16:05 |
| gibi | btw, there is an ongoing POST_FAILURE issue in Zuul that is being investigated by infra | 16:05 |
| * bauzas waves late, forgot the meeting | 16:05 | |
| gibi | hm, it was fixed apparently | 16:05 |
| gibi | any specific gate failre you want to mention? | 16:06 |
| gmann | also if you see tempest regex error | 16:07 |
| gmann | #link https://review.opendev.org/c/openstack/tempest/+/774766 | 16:07 |
| gmann | ^^ that is fixed so you can recheck | 16:07 |
| gmann | --exlude typo | 16:07 |
| gibi | thanks gmann | 16:08 |
| gibi | #topic Runway status | 16:08 |
| *** openstack changes topic to "Runway status (Meeting topic: nova)" | 16:08 | |
| gibi | #link https://etherpad.opendev.org/p/nova-runways-wallaby | 16:08 |
| gibi | #link https://blueprints.launchpad.net/nova/+spec/nova-support-webvnc-with-password-anthentication : has negative feedback to work with | 16:08 |
| gibi | #link https://blueprints.launchpad.net/nova/+spec/compact-db-migrations-wallaby : the nova db patches approved the nova_api db patches needs review | 16:08 |
| gibi | #link https://blueprints.launchpad.net/nova/+spec/modernize-os-hypervisors-api : the api code landed, the python-novaclient patch and the policy patch needs some work | 16:09 |
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| gibi | #link https://blueprints.launchpad.net/nova/+spec/support-interface-attach-with-qos-ports the last necessary patch got feedback and now updated, ready to review | 16:09 |
| * kashyap waves | 16:09 | |
| gibi | any specific feature we need to talk about | 16:09 |
| gibi | ? | 16:09 |
| lyarwood | #link https://blueprints.launchpad.net/nova/+spec/libvirt-default-machine-type - I've just added this to the queue btw | 16:09 |
| gibi | lyarwood: ack | 16:11 |
| gibi | is there a prime candidate who has time to review that? | 16:11 |
| stephenfin | I can | 16:12 |
| lyarwood | stephenfin: thanks, just a reminder that I'm AFK on Friday's but I'll address any feedback first thing Monday | 16:12 |
| gibi | cool, I will try to get there as a second reviewer somewhere mid next week, but early next week I will be busy with internal conference preparation | 16:12 |
| * kashyap can also look at it from some of the libvirt-related PoV ... | 16:12 | |
| lyarwood | thanks both | 16:13 |
| kashyap | lyarwood: Thank _you_ for taking on the work ... I was supposed to do some of it, and couldn't | 16:13 |
| gibi | any other feature that needs attention? | 16:14 |
| stephenfin | just the DB stuff | 16:15 |
| artom | I guess here or in open discussion but... there's a bunch of pre-requisite os-traits patches up | 16:15 |
| stephenfin | the API DB ones are ready for review now | 16:15 |
| artom | And I'm told we can't just Depends-on: for those, so we need to land them and release | 16:15 |
| stephenfin | I already pinged Dan about them | 16:15 |
| gibi | stephenfin: ack, it is on my radar | 16:15 |
| stephenfin | artom: Yeah, I reviewed most/all of those last night | 16:15 |
| stephenfin | just need another +" | 16:15 |
| stephenfin | *2 | 16:16 |
| artom | stephenfin, yep, so needs the +A | 16:16 |
| gibi | artom: which feature depends on the os-traits release? | 16:16 |
| artom | gibi, yes ;) | 16:16 |
| artom | So there's secure boot, VDPA, ephemeral encryption... | 16:16 |
| gibi | I see | 16:16 |
| artom | My socket policy thing | 16:16 |
| gibi | thanks | 16:16 |
| gibi | I will try to hit it this week | 16:17 |
| gibi | anything else? | 16:17 |
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| gibi | #topic Release Planning | 16:18 |
| *** openstack changes topic to "Release Planning (Meeting topic: nova)" | 16:18 | |
| gibi | Feature Freeze is at 11th of March, in 4 weeks from now | 16:18 |
| gibi | let's hurry up landing features :) | 16:18 |
| gibi | anything else about the coming release? | 16:18 |
| gibi | #topic Stable Branches | 16:19 |
| *** openstack changes topic to "Stable Branches (Meeting topic: nova)" | 16:19 | |
| gibi | Rocky (and might be older branches too) is blocked by issue (tempest-slow job): https://bugs.launchpad.net/neutron/+bug/1914037 | 16:19 |
| openstack | Launchpad bug 1914037 in tempest "scenario tests tempest.scenario.test_network_v6.TestGettingAddress fails" [Medium,Triaged] - Assigned to Hemanth Nakkina (hemanth-n) | 16:20 |
| gibi | newer branches seem OK | 16:20 |
| gibi | EOM | 16:20 |
| gibi | thank elod | 16:20 |
| gibi | any other news from stable? | 16:20 |
| lyarwood | Nope | 16:21 |
| elod | np, I'll try to review the fix | 16:21 |
| gmann | yeah we are trying to fix that in https://review.opendev.org/c/openstack/tempest/+/774764 | 16:21 |
| gmann | and testing nova patch #link https://review.opendev.org/c/openstack/nova/+/775003 | 16:21 |
| gmann | it did not tested due to how zuul pick the job definition | 16:21 |
| gmann | which is fixed now and should work. | 16:21 |
| gibi | gmann: thanks | 16:22 |
| gibi | Now the nova-stable-maint is part of placement-stable-maint group so all our stable love can spread to placement too | 16:22 |
| elod | gmann: thanks, looks promising \o/ | 16:22 |
| gibi | moving on | 16:23 |
| lyarwood | gibi: ah that reminds me | 16:23 |
| gibi | lyarwood: yes | 16:23 |
| lyarwood | gibi: sorry, quick note on placement, stable/victoria was blocked but I didn't have time to look into why | 16:23 |
| lyarwood | gibi: I was trying to land the .gitreview changes to actually open up the branch | 16:23 |
| lyarwood | https://review.opendev.org/c/openstack/placement/+/754671 for example | 16:24 |
| elod | lyarwood: I'll have a look | 16:24 |
| lyarwood | thanks | 16:24 |
| gmann | lyarwood: pyflakes rror | 16:24 |
| gmann | error | 16:24 |
| lyarwood | yeah I assumed it would be something lc related | 16:24 |
| gmann | pyflakes version conflict | 16:24 |
| lyarwood | I've just not had time | 16:24 |
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| lyarwood | if you and elod could look that would be great, I'll help with reviews once I'm back on Monday | 16:25 |
| gibi | hacking needs to be bumped I guess | 16:25 |
| gmann | sure | 16:25 |
| lyarwood | thanks | 16:25 |
| gibi | lyarwood: thanks | 16:25 |
| gibi | #topic Sub/related team Highlights | 16:25 |
| *** openstack changes topic to "Sub/related team Highlights (Meeting topic: nova)" | 16:25 | |
| elod | I'll try to take care of the conflicts there :) | 16:25 |
| gibi | elod: cool, thaks | 16:25 |
| gibi | thanks even | 16:25 |
| gibi | Libvirt (bauzas) | 16:26 |
| bauzas | . | 16:26 |
| bauzas | (that's it ;) ) | 16:26 |
| gibi | OK | 16:26 |
| gibi | #topic Open discussion | 16:26 |
| *** openstack changes topic to "Open discussion (Meeting topic: nova)" | 16:26 | |
| gibi | we have couple of topics on the agenda | 16:26 |
| gibi | (kashyap; 05-FEB-2021) Late blueprint-approval request: https://blueprints.launchpad.net/nova/+spec/allow-disabling-cpu-flags | 16:26 |
| gibi | I realize this is late in the cycle, but this really helps alleviate potential live migration problems on some Intel hardware during upgrades and updates. This is technically a simple feature; but can also be considered a "bug fix" that unblocks live migration in some scenarios. | 16:26 |
| kashyap | Yep... | 16:26 |
| gibi | Main Benefit: The ability to selectively disable CPU features for a guest means: newly launched VMs on a compute node can now disable offending guest CPU flags that block live migration. This facilitates live migration to a host with TSX=off. | 16:26 |
| gibi | Example: Today, a VM running on a compute node with Intel TSX=on (which is the default on all Linux kernels until v.5.11) cannot be migrated to a node with Intel TSX=off. But, the ability to selectively disable CPU flags alleviates this (and similar problems) — you can now keep TSX enabled on a host, and yet block it for the guest via `cpu_model_extra_flags`. This unblocks live-migrating the | 16:27 |
| gibi | said guest to a host with TSX=off. | 16:27 |
| gibi | EOM | 16:27 |
| gibi | Notes: On relevant Intel processors, TSX is suggested to be disabled as it can be a potential security problem. TSX is disabled by default upstream Linux v.5.11 (Oct-2019) | 16:27 |
| kashyap | gibi: So ... as a cherry on top; the last two hours I've done some tests | 16:27 |
| gibi | So I said before that if nobody objects and the implementation patch is ready then I'm willing to approve the bp late and right at the moment +2 the impl patch as well | 16:27 |
| ganso | gibi: o/ I have a topic for later when all others are done. Sorry I didn't put it in the agenda | 16:28 |
| gibi | ganso: ack, I will ping you | 16:28 |
| gibi | kashyap: does the test promising? | 16:28 |
| kashyap | Yes! | 16:28 |
| gibi | awesome | 16:28 |
| kashyap | Let me get the evidence quickly :) | 16:28 |
| kashyap | gibi: Here (for later): https://kashyapc.fedorapeople.org/CPU_flags_Nova_tests.txt | 16:28 |
| kashyap | I've done thre tests w/ three different Nova [libvirt]cpu_* configurations | 16:29 |
| kashyap | And all three yield expected results. I'm just checking some more; and I'll post the evidence in the review for the record | 16:29 |
| gibi | kashyap: thanks | 16:29 |
| gibi | it is convincing | 16:29 |
| kashyap | gibi: So, if you have a quick look there; the enabled CPU flag shows up in the guest; and the disabled ones don't. | 16:30 |
| kashyap | I also want to test on a different Intel host (the problematic ones), and then summarize the results. | 16:30 |
| gibi | btw, this is the implementation patch #link https://review.opendev.org/c/openstack/nova/+/774240 | 16:30 |
| kashyap | Yeah | 16:31 |
| kashyap | gibi: A small observation, though, on the XML bits: | 16:31 |
| kashyap | As expected, the disabled flags don't show up for the guest. But I'm wondering if it should also show up as "disable" in the guest XML, e.g. | 16:33 |
| kashyap | <feature policy='disable' name='flag1'/> | 16:33 |
| kashyap | <feature policy='disable' name='flag2'/> | 16:33 |
| kashyap | gibi: As of now, the functionality is as expected: if you tell Nova to disable a flag; it will not give it to the guest. But if you tell it to explicitly enable, or give neither '+' nor '-', it enables it. | 16:34 |
| kashyap | All expected behaviour. | 16:34 |
| gibi | kashyap: let's take this in the review | 16:34 |
| gibi | so others in this room, is there any objection to late approve the above bp and then quickly rewiew the small implementation patch? | 16:34 |
| kashyap | Anyway, I don't want to ramble on about the feature here. | 16:34 |
| kashyap | Yep, sorry | 16:34 |
| * kashyap thinks he made others zone out :D | 16:35 | |
| * gibi fetches his PTL whip | 16:36 | |
| kashyap | Hehe | 16:36 |
| * bauzas turns around and doesn't look | 16:37 | |
| kashyap | stephenfin: lyarwood: or anyone else --^ Any objections, rotten tomatoes, snide remarks? | 16:37 |
| stephenfin | nope | 16:37 |
| lyarwood | none from me at the moment, but there's time ;) | 16:37 |
| * lyarwood will review on Monday | 16:38 | |
| kashyap | No problem | 16:38 |
| gibi | OK, I consider this as sold. I will late approve the bp and we will to a proper review on the impl patch | 16:38 |
| gibi | moving on | 16:38 |
| gibi | (stephenfin) https://review.opendev.org/c/openstack/nova/+/772271 is stuck | 16:38 |
| kashyap | gibi: Yeap, thank you! | 16:38 |
| gibi | elod is concerned about the backportability of this, as it has user-facing impacts. As noted by lyarwood though, the previous behavior was wrong | 16:38 |
| gibi | EOM | 16:39 |
| gibi | elod: how strongly you object :) | 16:39 |
| gibi | ? | 16:39 |
| elod | well, like my last comment there :D | 16:40 |
| dansmith | I tend to agree with elod, but haven't fully digested the change | 16:40 |
| dansmith | broken forever behavior right? if it's not a regression, then it's less clear that it _needs_ to go back, and since it's a fairly substantial change in behavior, I'd generally rather not | 16:40 |
| lyarwood | yeah broken forever | 16:41 |
| stephenfin | yeah, broken forever, but use of designate means you'll likely hit it sooner rather than later | 16:42 |
| dansmith | I'll review it more in a bit and vote, but probably -1 | 16:42 |
| gibi | with possible two -1s I consider it as not approved for inclusion | 16:43 |
| lyarwood | well -1's from stable cores but yeah I agree | 16:43 |
| lyarwood | lets wait for dansmith to review it in full and we can go from there | 16:44 |
| gibi | lyarwood: OK | 16:44 |
| stephenfin | yeah, seems reasonable | 16:44 |
| gibi | moving on | 16:44 |
| gibi | (stephenfin) Outreachy projects? | 16:44 |
| gibi | I'm already helping mentor some NDSU students over in OSC/SDK land w/ diablo_rojo and gtema and could probably work with someone else. Do we have any nice, self-contained items that we'd like to do but just haven't had time for though? | 16:44 |
| * gibi thinks of things like PCI in placement (would need hardware though) | 16:44 | |
| gibi | no me stephenfin :D | 16:44 |
| gibi | http://lists.openstack.org/pipermail/openstack-discuss/2021-February/020288.html | 16:44 |
| gibi | EOM | 16:44 |
| stephenfin | so per $summary | 16:45 |
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| stephenfin | ideally it should be something useful enough that it will be reviewed, but not so important that it'll be an issue if it isn't done | 16:45 |
| lyarwood | shared storage in placement? | 16:46 |
| lyarwood | that's huge actually, ignore me | 16:46 |
| gibi | PCI also not well understood at least not for me without digging up notes | 16:46 |
| stephenfin | fair point | 16:47 |
| gibi | mypy could be something that is small, but we don't have consensus on the usefullness of it | 16:47 |
| dansmith | yeah, don't put them in the middle of THAT :) | 16:48 |
| gibi | :) | 16:48 |
| gibi | somebody should fix the gerrit -> launchpad integration, that would be very usefull for me | 16:48 |
| dansmith | ++ :) | 16:48 |
| gibi | that would not be release critical so can be done slowly | 16:49 |
| gibi | I just don't know if somebody already started it | 16:49 |
| gibi | and it not nova specific | 16:49 |
| artom | And the job results display | 16:49 |
| gibi | stephenfin: do you need ideas or do you need a volunteering mentor? | 16:50 |
| bauzas | we can open an ethercan of worms | 16:50 |
| artom | The current greasemonkey script is buggy | 16:50 |
| stephenfin | I can check with infra | 16:50 |
| stephenfin | gibi: Ideas. I'm okay with mentoring | 16:50 |
| kashyap | gibi: stephenfin: Yeah, for Outreachy ... FWIW, anything hardware-specific would be too much for a novice student | 16:50 |
| kashyap | Something that can be done in VMs / et al, with bite-sized-tasks would be nice | 16:51 |
| stephenfin | We don't need to figure them out now. Mostly raising it to the front of peoples' minds | 16:51 |
| * kashyap stops giving unsolicited advice | 16:51 | |
| kashyap | stephenfin: Is OpenStack accepted to Outreachy this cycle? | 16:51 |
| stephenfin | If anyone does have additional ideas, lemme know and I'll chat with Kendall about them | 16:51 |
| gibi | stephenfin: thanks | 16:51 |
| stephenfin | kashyap: yup, it seems so (see the ML link) | 16:51 |
| kashyap | Nice | 16:51 |
| gibi | moving on | 16:52 |
| gibi | ganso: your turn | 16:52 |
| ganso | gibi: thanks! | 16:52 |
| ganso | hi everyone! I'd like to revisit this https://bugs.launchpad.net/nova/+bug/1821755 | 16:52 |
| openstack | Launchpad bug 1821755 in OpenStack Compute (nova) "live migration break the anti-affinity policy of server group simultaneously" [Medium,In progress] - Assigned to Boxiang Zhu (bxzhu-5355) | 16:52 |
| ganso | 2 approaches have been suggested, 1 long term ideal solution using placement | 16:52 |
| ganso | and 1 short term approach, which seems to be https://review.opendev.org/c/openstack/nova/+/651969/ | 16:53 |
| ganso | that short term approach seems like it just mitigates the problem and it is still racy | 16:53 |
| ganso | so I'm looking at the long term approach. Considering the complexity of integrating all the moving parts, I'd assume it will require a spec | 16:53 |
| ganso | because it sounds like it will involve deprecating the affinity and anti-affinity filters, in favor of having this functionality in placement | 16:54 |
| ganso | I'd like to know with everyone agrees that this is the correct direction, if this is something worth working into (as it will require review effort from you folks) | 16:54 |
| ganso | s/know with/know if | 16:55 |
| gibi | ganso: modelling affinity in placement definetly needs a spec | 16:55 |
| gibi | ganso: I don't recall if we had any stab at it previously | 16:55 |
| gibi | instances are in placement as consumers so locality can be checked | 16:56 |
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| ganso | I was thinking about having a placement property or something to map the affinity and anti-affinity to the instances, like if it was a resource | 16:57 |
| ganso | anyway, those are details that can be sorted out in the spec and in future meetings | 16:57 |
| gibi | ganso: the problem is that allocation candidate query does not have a way to say I don't want to be next to a consumer | 16:58 |
| gibi | so this probably needs placement api work | 16:58 |
| gibi | anyhow I suggest you to look at existing placement pre filters in nova | 16:59 |
| gibi | as a starting point | 16:59 |
| ganso | gibi: thanks! | 16:59 |
| gibi | is there anything else for today? | 16:59 |
| ganso | I will start playing aroudn with this and working on the spec | 16:59 |
| gibi | ganso:cool, ping me if you have questions | 16:59 |
| ganso | gibi: will do =) | 17:00 |
| gibi | we are out of time | 17:00 |
| gibi | thanks for the meeting | 17:00 |
| gibi | we covered a lot | 17:00 |
| gibi | #endmeeting | 17:00 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 17:00 | |
| openstack | Meeting ended Thu Feb 11 17:00:16 2021 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 17:00 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/nova/2021/nova.2021-02-11-16.00.html | 17:00 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/nova/2021/nova.2021-02-11-16.00.txt | 17:00 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/nova/2021/nova.2021-02-11-16.00.log.html | 17:00 |
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