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efried | #startmeeting nova-scheduler | 14:00 |
---|---|---|
openstack | Meeting started Mon Mar 4 14:00:24 2019 UTC and is due to finish in 60 minutes. The chair is efried. Information about MeetBot at http://wiki.debian.org/MeetBot. | 14:00 |
openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 14:00 |
*** openstack changes topic to " (Meeting topic: nova-scheduler)" | 14:00 | |
openstack | The meeting name has been set to 'nova_scheduler' | 14:00 |
takashin | o/ | 14:00 |
alex_xu | \o | 14:00 |
tetsuro | o/ | 14:00 |
edleafe | \o | 14:01 |
gibi | o/ | 14:01 |
cdent | o/ | 14:02 |
efried | #link agenda (just updated, please refresh) https://wiki.openstack.org/wiki/Meetings/NovaScheduler#Agenda_for_next_meeting | 14:02 |
bauzas | \o | 14:02 |
efried | #topic last meeting | 14:02 |
efried | #link last minutes http://eavesdrop.openstack.org/meetings/nova_scheduler/2019/nova_scheduler.2019-02-25-14.00.html | 14:02 |
*** openstack changes topic to "last meeting (Meeting topic: nova-scheduler)" | 14:02 | |
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efried | old business: | 14:03 |
efried | #link alloc cands in_tree series starting at https://review.openstack.org/#/c/638929/ | 14:03 |
efried | merged \o/ | 14:03 |
cdent | huzzah | 14:03 |
efried | #link the OVO-ectomy https://review.openstack.org/#/q/topic:cd/less-ovo+(status:open+OR+status:merged) | 14:04 |
efried | merged \o/ | 14:04 |
efried | the rest we'll get to in new bizniss. | 14:04 |
efried | anything else from last week? | 14:04 |
efried | #topic specs and review | 14:04 |
efried | #link latest pupdate http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003385.html | 14:04 |
efried | pupdates are back \o/ | 14:04 |
*** openstack changes topic to "specs and review (Meeting topic: nova-scheduler)" | 14:04 | |
efried | #link blueprint tracking https://etherpad.openstack.org/p/nova-stein-blueprint-status | 14:05 |
efried | #link libvirt reshaper https://review.openstack.org/#/c/599208/ | 14:05 |
efried | bauzas, what news? | 14:05 |
bauzas | efried: I just provided a comment | 14:05 |
bauzas | given the concern of alex_xu | 14:06 |
bauzas | but tbc, the series is done | 14:06 |
bauzas | we need reviews | 14:06 |
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efried | o right, alex_xu would you please have a look? | 14:06 |
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efried | Since you're here - if you still have concerns, we can discuss them in #opens | 14:06 |
alex_xu | yea, sorry just saw the reply | 14:07 |
efried | or, uh, now I guess would also be fine. | 14:07 |
alex_xu | no, my reading is slow, please go through other item first | 14:07 |
efried | sure thing. | 14:07 |
efried | #link DRY/clean up placement objects starting at https://review.openstack.org/#/c/637325/ | 14:08 |
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efried | This is getting tall. Much work is being done here. jaypipes has a -1 on the bottom, cdent has responded (TLDR: what jaypipes suggests is happening, just further up the chain) | 14:08 |
cdent | I rebased that this morning, more than I initially intended | 14:08 |
efried | heh, I noticed | 14:08 |
cdent | my local tree had something already merged in it and I got confused | 14:09 |
efried | white belt mistake | 14:09 |
* cdent has never liked rebasing | 14:09 | |
efried | anyway, most of those 15 reviews are pretty easy, more eyes would be most welcome. | 14:10 |
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efried | 14 (/me can't count) | 14:10 |
cdent | yeah, if we could get more of that merged, it would make the tallness less of a challenge | 14:10 |
efried | #topic Extraction | 14:11 |
efried | #link Extraction https://etherpad.openstack.org/p/placement-extract-stein-5 | 14:11 |
*** openstack changes topic to "Extraction (Meeting topic: nova-scheduler)" | 14:11 | |
efried | whoops, I put a link in the wrong place on the agenda... | 14:11 |
efried | #link Placement is set up to use storyboard https://review.openstack.org/#/c/639445/ | 14:11 |
efried | ^ is merged | 14:11 |
cdent | #link storyboard: https://storyboard.openstack.org/#!/project_group/placement | 14:11 |
efried | what does this mean, that we've officially got a storyboard presence? | 14:11 |
efried | thanks cdent | 14:11 |
efried | I've never used storyboard before, will need to find the storyboard-for-dummies reference | 14:11 |
cdent | yes, but we haven't yet solidified plans of how to use it | 14:11 |
cdent | ditto | 14:12 |
cdent | I think they have some test projects too where it is possible to play around | 14:12 |
cdent | related to storyboard: I marked as "fix committed" a bunch of bugs that were committed but hadn't been auto updated. there are a few left I'm not sure about: | 14:12 |
cdent | which I suppose we can talk about during the bugs topic | 14:13 |
SotK | https://storyboard-dev.openstack.org/ is the sandbox for storyboard | 14:13 |
SotK | for playing around in | 14:13 |
efried | Thanks SotK | 14:13 |
bauzas | to make it clear, you want to use storyboard for what ? blueprints only or bugs ?N | 14:13 |
efried | #link storyboard sandbox https://storyboard-dev.openstack.org/ | 14:13 |
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cdent | bauzas: nothing yet, because we haven't yet made a plan and it seemed weird to try to make a plan at this stage in the cycle | 14:14 |
efried | why? | 14:14 |
bauzas | ok | 14:14 |
bauzas | why to who ? | 14:14 |
bauzas | me or cdent? | 14:14 |
efried | why shouldn't we try to figure out how we're going to use sb? | 14:15 |
bauzas | me : because I'd like to know what to do when you want to provide some feature for placement | 14:15 |
bauzas | that's it | 14:15 |
efried | what are the options on the table? | 14:15 |
cdent | we should figure it out, but we don't need to rush to change anything because we don't want to confuse end users who might be wanting to report bugs _now_ | 14:15 |
cdent | and are not party to our meanderings | 14:15 |
cdent | for train related features I would think that creating stories in storyboard will be the way to go | 14:15 |
edleafe | Some time at the PTG for SB discussion/education would be a help | 14:16 |
bauzas | agreed with edleafe | 14:16 |
efried | What does it take to get, um, "subscribed" to new things that are put into sb against our project? | 14:16 |
bauzas | or wait for the new PTL to decide :) | 14:16 |
cdent | but since we're not in a hurry in that direction, and people are focused on feature freeze and other things, I assumed we could put the SB planning on the back burner | 14:16 |
cdent | efried: go to preferences under your name | 14:16 |
cdent | where there are email settings you can choose | 14:17 |
edleafe | Yeah, let's not do StoryBoard 101 now | 14:17 |
efried | figured it out. | 14:17 |
efried | It was fairly intuitive, once I had realized I needed to log in. | 14:17 |
efried | so | 14:17 |
efried | It's probably fairly obvious, having decided to use this thing at all, what should happen in the Train cycle. | 14:17 |
SotK | feel free to come and ask questions in #storyboard when you start trying to figure things out | 14:18 |
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efried | Namely: new features and long-term wishlist items should get a, um, "story". And bugs should be reported there too. | 14:18 |
efried | I think it's the interim between now and then that's not cut and dried | 14:18 |
efried | is that a reasonable assessment? | 14:18 |
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cdent | yes | 14:19 |
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edleafe | Be prepared for a "moving to git from svn" brain reshuffling. The workflow is not 1:1 to launchpad | 14:20 |
efried | so it seems to me as though we do need to figure out that interim, precisely so that people are not confused about where and how to report bugs | 14:20 |
cdent | I think for "us" we can manage to use both launchpad and storyboard for the rest of the cycle, and in train it will be only storyboard. But for "them" I think asking people to switch not on a cycle boundardy is weird | 14:20 |
efried | then this seems like an ideal transition period. | 14:20 |
efried | Send an email announcing we're migrating to SB | 14:20 |
efried | and that we'll continue accepting lp bugs until train opens | 14:20 |
* bauzas just loves the SB acronym | 14:21 | |
efried | but at that point we'll shut down lp (which I guess we won't/can't really do, but we can say it) and all bugs need to be reported in sb. | 14:21 |
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bauzas | AFAIK, there are some tools for migrating bugs from LP to SB | 14:21 |
efried | and meanwhile train specs should be opened in sb exclusively. | 14:21 |
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jaypipes | efried: sorry, was etherpadding about cyborg... yes, will try to get to that series today. | 14:21 |
efried | bauzas: I think that's the part we're planning to wait on, until train officially opens. | 14:21 |
cdent | right: the main stickler here is that people will _always_ continue reporting bugs in launchpad, so we can't simply forget about it because nova isn't getting shut down | 14:21 |
efried | jaypipes: ack, thx | 14:22 |
bauzas | you should poke some folks in #storyboard that'd be happy to help you, incl. but not exhaustively fungi (IIRC) | 14:22 |
fungi | definitely not exhaustively ;) | 14:22 |
efried | yup, I get it cdent. When we officially cut over, we would I guess start marking placement bugs as Invalid in lp, requesting they be opened in sb instead. | 14:22 |
cdent | something like that | 14:22 |
bauzas | there is an upgrade path | 14:22 |
bauzas | again, you should get info first | 14:22 |
cdent | I really don't think we need to over analyzse this. there is a very small number of bugs that get reported on placement itself | 14:23 |
bauzas | but some projects already made the leap | 14:23 |
efried | and in the interim, we would respond to all such bugs with a message like, "Okay, we're dealing with this here now, but on such-and-such a date we're transitioning..." | 14:23 |
cdent | we just need to pay some attention and it will be fine | 14:23 |
efried | Okay, but in terms of immediate action, IMO somebody should send an email. | 14:23 |
cdent | to which audience? | 14:23 |
cdent | because we already did to "us" | 14:24 |
efried | ML | 14:24 |
bauzas | again, before taking any action, just consider the migration path *first* :) | 14:24 |
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cdent | efried: I mean which audience within the ML | 14:24 |
bauzas | unless you only wanna features | 14:24 |
efried | I can volunteer for that, though it'll have to be exclusively "what" since I have no idea on the "how". | 14:24 |
efried | [placement] ought to suffice, no? | 14:24 |
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efried | because we only care about people opening bugs/features against placement | 14:24 |
cdent | efried: I'm asking if you mean end users/operators or devs? Because that changes the pitch of the message | 14:25 |
efried | it does? | 14:25 |
cdent | In any case: | 14:25 |
efried | Lemme draft something | 14:25 |
efried | and I'll show it to you | 14:25 |
efried | and we can go from there | 14:25 |
cdent | #action: cdent send a message about storyboard | 14:25 |
cdent | i'll do it | 14:25 |
efried | I don't think this is rocket science | 14:25 |
efried | okay. | 14:25 |
efried | moving on | 14:25 |
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cdent | It's not rocket science is what I've been trying to say for the last 10 minutes | 14:25 |
efried | anything else extraction? | 14:25 |
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cdent | some of the puppet stuff merged, which is cool | 14:26 |
cdent | other than that, I think extraction is pretty much done for this cycle | 14:27 |
cdent | it's next cycle when nova deletes placement that things get exciting again | 14:27 |
efried | cool | 14:28 |
efried | #topic bugs | 14:28 |
efried | #link Placement bugs https://bugs.launchpad.net/nova/+bugs?field.tag=placement | 14:28 |
*** openstack changes topic to "bugs (Meeting topic: nova-scheduler)" | 14:28 | |
efried | cdent: you wanted to talk about some possibly-done bugs needing to be marked in lp? | 14:28 |
cdent | yeah, one sec | 14:28 |
cdent | #link https://bugs.launchpad.net/nova/+bug/1696830 | 14:29 |
openstack | Launchpad bug 1696830 in OpenStack Compute (nova) "nova-placement-api default config files is too strict" [Low,In progress] - Assigned to Corey Bryant (corey.bryant) | 14:29 |
cdent | #link https://bugs.launchpad.net/nova/+bug/1778591 | 14:29 |
openstack | Launchpad bug 1778591 in OpenStack Compute (nova) "GET /allocations/{uuid} on a consumer with no allocations provides no generation" [Medium,In progress] | 14:29 |
cdent | are either done or stuck, I'm not sure which | 14:29 |
cdent | I dropped https://goo.gl/vzGGDQ from 17 to 6 earlier today | 14:30 |
cdent | mostly because we no longer have auto reporting of "fix committed" | 14:30 |
efried | \o/ | 14:30 |
cdent | I assuming we have a similar problem with bugs not yet marked as in progress: | 14:31 |
cdent | #link https://goo.gl/TgiPXb | 14:31 |
cdent | but i haven't checked that and probably won't get to it today | 14:31 |
efried | so what needs to be done to move things along? Or is it necessary to move things along with any urgency? | 14:32 |
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cdent | no immediate urgency, but if any of those are "done" or "dead" they can be made to not cloud the storyboard waters | 14:33 |
cdent | and just as a matter of principle a bug that hasn't had attention in a while isn't really real | 14:33 |
efried | okay. | 14:35 |
efried | #topic opens | 14:35 |
efried | (From last last week) Format of this meeting - new PTL to query ML | 14:35 |
efried | (From last last week) Placement team logistics at PTG - new PTL to query ML | 14:35 |
efried | #link post-extraction plans for placement specs/bps/stories http://lists.openstack.org/pipermail/openstack-discuss/2019-February/003102.html | 14:35 |
*** openstack changes topic to "opens (Meeting topic: nova-scheduler)" | 14:35 | |
efried | libvirt reshaper fup - alex_xu, ready to discuss? | 14:35 |
alex_xu | yea | 14:35 |
efried | bauzas: ^ | 14:36 |
bauzas | yup | 14:36 |
alex_xu | may i ask why we have this middle step https://review.openstack.org/#/c/599208/18? before we have multiple types | 14:36 |
bauzas | because if not, we need to reshape once more | 14:36 |
efried | Perhaps alex_xu is suggesting we go straight to multiple type support | 14:36 |
bauzas | the original PS was only providing a single inventory per *type | 14:37 |
efried | alex_xu: I think we agreed to do it in stages just to keep the surface area manageable for stein. | 14:37 |
bauzas | but for NUMA awareness, that couldn't make it | 14:37 |
alex_xu | oh...that is what i thought when I read the spec | 14:37 |
bauzas | so, we decided to not just take only one aspect at once | 14:37 |
bauzas | but rather model the resources as the best for both affinity and type check | 14:37 |
bauzas | even if both affinity and type check features aren't there yet | 14:38 |
bauzas | - just to prevent extra reshapes that are costly - | 14:38 |
bauzas | HTH ? | 14:38 |
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alex_xu | yea, i see the reason now | 14:39 |
alex_xu | but in the end, when we have numa and multiple type, then we will put same type in the same RP, right? | 14:39 |
efried | I don't think so. | 14:39 |
efried | I think we would still split along pGPU lines. | 14:40 |
alex_xu | what is the reason behind that ? | 14:40 |
efried | because it's still important to be able to map inventory units (placement) to PCI addresses (libvirt/linux) | 14:40 |
efried | and a given pGPU has a given number of VGPU units available | 14:41 |
efried | that's assuming we keep the traits of all the pGPUs the same, which isn't necessarily going to happe | 14:41 |
efried | n | 14:41 |
efried | and if we were to change the config of a pGPU that had been consolidated with another of the previously-same type, we would have to reshape. | 14:41 |
bauzas | yup, correct | 14:41 |
efried | whereas if we keep them separate, we can just do the change. | 14:41 |
alex_xu | yea, agree with that, at least a vm needn't a lot of vGPU | 14:41 |
bauzas | we will still provide inventories per physical GPUs | 14:41 |
alex_xu | then we simple the code a little since RP mapping to the PCI address | 14:42 |
bauzas | if two pGPUs share same type, that's good, but that's still two RPs | 14:42 |
bauzas | alex_xu: there is a spec on it | 14:42 |
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bauzas | that basically says that yes | 14:42 |
alex_xu | cool, thanks, i got it | 14:42 |
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bauzas | alex_xu: fyk https://specs.openstack.org/openstack/nova-specs/specs/rocky/approved/vgpu-rocky.html | 14:43 |
efried | Do any of the other reviewers who have participated along the way want the opportunity to give it a nod before we +W it? | 14:43 |
bauzas | honestly, except you and alex_xu... :p | 14:43 |
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bauzas | and matt co-authored, so he can't really argue | 14:44 |
alex_xu | but at the edge case, like each two of PGPU only left 1 VGPU, and a VM is asking 2 VGPUs? | 14:44 |
efried | mriedem jaypipes cdent artom melwitt gibi | 14:44 |
efried | alex_xu: If requested in the same request group, fail. If requested separately, that request can be fulfilled. | 14:44 |
alex_xu | or actually pGPU can provide enough number of VGPUs? that isn't the case worry about? | 14:44 |
alex_xu | efried: but that required a different flavor | 14:45 |
gibi | efried: I followed a bit. and I'm for representing separate PGPUs as separate RPs | 14:45 |
cdent | I think the implementation is what we said it should be, and in general a different "physical" thing should be a different rp | 14:45 |
efried | if I were designing a flavor, and it had multiple vgpus in it, and I wanted to assure most-likely-to-fit, I would request resources1:VGPU=1&resources2:VGPU=1&...&resourcesN:VGPU=1&group_policy=none | 14:46 |
gibi | at some point somebody will ask for the numa awareness of the vgpu-s and then we need to know which vgpu is coming from which PGPU which close to which numa node | 14:46 |
jaypipes | efried: I'd like the opportunity. | 14:46 |
jaypipes | please | 14:46 |
efried | if I were being lazy and didn't care so much about most-likely-to-fit, I would request resources:VGPU=N | 14:46 |
alex_xu | oh....request group can use like that | 14:46 |
efried | but that would bounce in scenarios of high saturation as alex_xu mentions | 14:46 |
efried | jaypipes: ack. So alex_xu if you approve, please don't +W | 14:47 |
bauzas | you lost me | 14:47 |
bauzas | I was dragged from two mins | 14:47 |
alex_xu | no, I will leave that to jaypipes, I'm not follow this series enough | 14:47 |
efried | okay | 14:48 |
efried | bauzas: I think we're clear. | 14:48 |
bauzas | are we drawing something ? | 14:48 |
efried | a conclusion? | 14:48 |
alex_xu | yes, I'm clean :) | 14:48 |
bauzas | just to make it clear, the reshape is just modeling resources | 14:48 |
* efried rolls out his Jump To Conclusions Mat. | 14:48 | |
bauzas | not how you query them :) | 14:48 |
bauzas | given you can't allocate more than a single vGPU atm, it's a no-brainer :) | 14:48 |
jaypipes | for the record, I've reviewed that series a number of times now. I think half my reviews are sitting in draft state because various others bring up identical points I was raising. | 14:49 |
jaypipes | just would like to do a once over on it. | 14:49 |
jaypipes | for peace of mind | 14:49 |
efried | that would be helpful in any case jaypipes, thank you. | 14:49 |
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bauzas | tbh, the reshape change is hairy | 14:49 |
bauzas | hence why I'm very reluctant to have more than a single reshape :) | 14:49 |
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efried | yeah, it's not that it's a resource drain on the system or anything; it's just pretty complicated to code up. And a special-purpose chunk of code that's going to get run at most once in a deployment and then never used again. | 14:50 |
efried | so good to minimize how many reshapers we write overall. | 14:51 |
efried | anything else on this topic before we move on? | 14:51 |
efried | okay, other topics for open discussion before we close? | 14:51 |
efried | Thanks everyone. | 14:52 |
efried | o/ | 14:52 |
efried | #endmeeting | 14:52 |
*** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 14:52 | |
openstack | Meeting ended Mon Mar 4 14:52:45 2019 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 14:52 |
openstack | Minutes: http://eavesdrop.openstack.org/meetings/nova_scheduler/2019/nova_scheduler.2019-03-04-14.00.html | 14:52 |
openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/nova_scheduler/2019/nova_scheduler.2019-03-04-14.00.txt | 14:52 |
openstack | Log: http://eavesdrop.openstack.org/meetings/nova_scheduler/2019/nova_scheduler.2019-03-04-14.00.log.html | 14:52 |
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cdent | thanks efried | 14:53 |
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