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#openstack-nova - 2017-08-02
16:39:32 openstackgerrit Ildiko Vancsa proposed openstack/nova master: Implement new attach Cinder flow https://review.openstack.org/330285
16:42:31 openstack Launchpad bug 1708205 in OpenStack Compute (nova) "placement allocation representation asymetric on PUT and GET" [Low,Confirmed]
16:42:31 cdent dansmith: in honor of your pain, I created a bug, which we can decided to care about or not: https://bugs.launchpad.net/nova/+bug/1708205
16:42:40 dansmith oh I care
16:42:42 dansmith I care bigly
16:42:50 cdent tremendous
16:47:03 mriedem ok got the patch
16:47:08 mriedem pushing soon
16:47:10 mriedem prepare
16:50:49 openstackgerrit Matt Riedemann proposed openstack/nova master: WIP: Sum allocations in the scheduler when resizing to the same host https://review.openstack.org/490085
16:50:52 mriedem dansmith: cdent: ^ it's not the prettiest, and it doesn't account for a case that we'd have shared storage
16:51:09 jangutter I've got a newbie question here regarding attaching/detaching SR-IOV ports in Nova. I presume it's not going to be "just something simple" and would need work in Queens at the very least? (ref: https://review.openstack.org/#/c/139910/ )
16:51:26 openstackgerrit Chris Dent proposed openstack/nova master: [placement] Avoid error log on 405 response https://review.openstack.org/490021
16:52:17 dansmith ack I will build on it when I'm done with my thing
16:54:07 cdent mriedem: If were on a non-shared some host resize, there will only be one allocation, so perhaps we can avoid some of the looping, which makes my brain explore?
16:54:14 cdent s/some/same/
16:54:28 mriedem dansmith: ok, i have a todo question in the test - which is i'm not sure if we even need the compute to adjust things, e.g. if the new alloc for vcpu is smaller than the current alloc, wouldn't we just not sum those? in other words, shouldn't the new allocations when we're done be the max of the current + new?
16:54:41 jangutter Has someone taken a look at attaching/detaching SR-IOV ports recently? If not, I can try to take a stab at it.
16:54:49 mriedem jangutter: no
16:54:53 openstackgerrit Stephen Finucane proposed openstack/nova master: doc: Start using oslo_config.sphinxext https://review.openstack.org/482961
16:54:53 openstackgerrit Stephen Finucane proposed openstack/nova master: doc: Rework README to reflect new doc URLs https://review.openstack.org/480074
16:54:54 cdent mriedem: for the duration of the resize we need room for both vms, don’t we?
16:54:54 openstackgerrit Stephen Finucane proposed openstack/nova master: doc: Start using oslo_policy.sphinxext https://review.openstack.org/479358
16:54:54 openstackgerrit Stephen Finucane proposed openstack/nova master: policies: Fix Sphinx issues https://review.openstack.org/480516
16:54:55 openstackgerrit Stephen Finucane proposed openstack/nova master: doc: Rework index page per new sections https://review.openstack.org/478485
16:54:56 openstackgerrit Stephen Finucane proposed openstack/nova master: doc: Rewrite index page https://review.openstack.org/490088
16:54:56 openstackgerrit Stephen Finucane proposed openstack/nova master: doc: Remove dead files https://review.openstack.org/478470
16:55:05 dansmith mriedem: I don't think we should be that discriminating
16:55:06 mriedem cdent: even if it's on the same host?
16:55:18 dansmith cdent: his point is that vcpus are somewhat ephemeral, not a strict quantity of things that go away
16:55:23 dansmith except for pinning, but...
16:55:24 mriedem cdent: yes i tried a few ways to do this w/o the looping and stuff and it hurt my brain
16:55:37 dansmith I think the scheduler should stay out of deciding what it does and doesn't know about the hypervisor
16:55:44 mriedem if i'm resizing from 1 cpu to 2 cpu on the same host, my total allocation on that host should be 2, not 3
16:56:20 mriedem yeah it's fair to say we don't want to bake all that logic into the scheduler
16:56:33 mriedem just seems a bit wasteful
16:56:39 mriedem until you confirm and we fix thigns
16:56:41 cdent and for vmware and powervm and maybe others, the resize may not be on the same host, just the same n-cpu?
16:56:54 mriedem powervm should be fine
16:56:56 dansmith cdent: we're accounting based on node though
16:56:58 mriedem vmware is the freak
16:57:12 dansmith still,
16:57:31 mriedem but yeah it's per node
16:57:33 dansmith for a hypervisor with very concrete resources, we don't know that some resources add and others don't
16:57:36 dansmith and,
16:57:48 dansmith we're not using double the disk in most cases,
16:57:53 openstackgerrit Merged openstack/nova master: Accept any scheduler driver entrypoint https://review.openstack.org/484828
16:57:55 dansmith but it depends on the config of the node,
16:58:07 dansmith so we should just grab double anyway for everything, IMHO
16:58:19 mriedem bauzas: are you going to backport https://review.openstack.org/#/c/484828/ to ocata or should i?
16:58:39 bauzas mriedem: I can
16:58:42 mriedem dansmith: ok - my main concern was that ocata computes aren't going to fix the double allocation to remove the old flavor
16:58:54 dansmith mriedem: they're just going to trample all over it anyway
16:59:01 mriedem that's true
16:59:06 mriedem gd ocata computes
16:59:11 mriedem they're aholes
16:59:16 bauzas mriedem: looks like I need to resolve a conflict but I'll do
16:59:20 dansmith I know.. greedy punks
16:59:32 mriedem i will commence to lunching then
16:59:33 cdent i first read that as octopus computes
17:10:15 melwitt mriedem, dansmith: was on a call, ack to skipping cells meeting
17:16:37 openstackgerrit Steve Noyes proposed openstack/nova master: Do not attempt volume swap when guest is stopped/suspended https://review.openstack.org/389798
17:21:54 openstackgerrit Steve Noyes proposed openstack/nova master: Do not attempt volume swap when guest is stopped/suspended https://review.openstack.org/389798
17:24:46 dansmith mriedem: so that patch is not on top of jay's, nor under gibi's
17:26:36 dansmith I'm thinking I will put this on top of gibi's
17:34:56 openstackgerrit Merged openstack/nova master: placement: remove existing allocs when set allocs https://review.openstack.org/489273
17:36:47 dansmith heh, found another problem
17:37:17 dansmith at least with fake virt, we're reporting min_unit=1, max_unit=1, step_size=1, which means we can't claim 2 vcpus for the single instance
17:37:23 dansmith which could be a problem in real life,
17:37:40 dansmith if configured so that one instance can't take more than 25% of a host, but a resize would technically take 50% in a single allocation
17:37:49 dansmith which would be solved by my migration uuid thing
17:40:26 bauzas dansmith: mriedem: just saw the above discussion about whether the scheduler should know the virt logic and the move ops, tbc MHO is * NOOOOOOO *
17:40:38 bauzas because we have conductors for that
17:40:54 bauzas not for virt stuff, but at least knowing whether it's a move or a boot
17:41:13 bauzas scheduler should just give you a destination, whether it's for a move or a boot, that's it
17:42:09 bauzas if we need more reasons why we need to do that, I don't want to hit your wounts, but that's why we first tried to claim by the conductors...
17:42:22 bauzas anyway
17:47:14 dansmith oye, the fake driver is only reporting one vcpu for some reason
17:50:45 dansmith ohh
17:56:16 mriedem dansmith: yeah hadn't gotten to the resize functional tests yet
18:00:35 mriedem dansmith: i can start rebasing my change on top of gibi's test, unless i need to hold off for something
18:02:08 dansmith mriedem: already done
18:02:31 dansmith I didn't realize we used SmallFakeDriver everywhere, which only has one vcpu
18:02:35 dansmith so I got past that,
18:02:47 dansmith but we will likely have obscure issues with that elsewhere
18:03:05 dansmith like people won't be able to resize to the same host if they have to dip into overcommit for vcpu, which will make no sense to them
18:04:10 mriedem dansmith: ok done locally or...?
18:04:14 mriedem because i don't see those rebased
18:04:15 dansmith yes
18:04:17 mriedem ok
18:04:45 mriedem i think i'll start building on https://review.openstack.org/#/c/490085/ with handling shared storage in resize to same host, see how terrible that looks
18:04:57 mriedem won't push anything though
18:07:15 openstackgerrit Ed Leafe proposed openstack/nova master: Handle addition of new nodes/instances in ironic flavor migration https://review.openstack.org/487954
18:27:35 dansmith mriedem: so I'm making your patch work on top of gibi's tests (or rather adjusting gibi's test for what you fix)
18:27:51 dansmith and then jay's can go on top of that, with a fix for the compute node part
18:31:19 mriedem alright
18:31:22 openstackgerrit Dan Smith proposed openstack/nova master: WIP: Sum allocations in the scheduler when resizing to the same host https://review.openstack.org/490085
18:31:22 openstackgerrit Dan Smith proposed openstack/nova master: Test resize to same host with placement api https://review.openstack.org/489973
18:31:26 dansmith mriedem: ^
18:32:07 mgagne We used to rely on a custom image props in our out-of-tree virt driver in Nova kilo. With the oslo.versionedobjects migration, I found (testing against Mitaka) that ImageMetaProps has a list of hardcoded supported properties and I can no longer inject or read our custom property. What's the best way for us to use our custom prop in Nova?

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