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#openstack-nova - 2017-05-16
20:34:22 mriedem artom: yeah probably,
20:34:34 mriedem then we'll get the network-vif-unplugged event from neutron
20:35:01 mriedem but, i don't think we handle that
20:35:08 mriedem LOG.warning(_LW('Received unexpected event %(event)s for '
20:35:08 mriedem 'instance'),
20:35:52 mriedem http://logs.openstack.org/25/465125/1/check/gate-tempest-dsvm-neutron-full-ubuntu-xenial/65c553c/logs/screen-n-cpu.txt.gz?level=WARNING#_May_16_18_05_12_035418
20:36:10 mriedem we get a lot of those
20:36:23 mriedem and we don't actually detach from the guest
20:37:17 mriedem artom: really, i don't know why attach_interface just doesn't call detach_interface on failure
20:37:23 mriedem since that handles the things we care about
20:37:39 mriedem unplugs the vif and detaches the device from the guest
20:38:02 artom mriedem, for real, vif_driver.unplug ends up going to Neutron?
20:38:12 mriedem artom: it doesn't call neutron directly
20:38:24 mriedem but the neutron agent is polling for changes, which are introduced via the os-vif unplug
20:38:39 mriedem and the neutron agent notifies the neutron server which sends an event back to nova
20:38:53 mriedem but as noted, we don't handle network-vif-unplugged
20:38:58 artom Ah... Well, by default I assume code that's there is there for a reason, and works well enough
20:39:16 artom And it was apparently decided by past powers that be that vif_driver.unplug was enough cleanup, so... ;)
20:39:23 mriedem heh yeah idk
20:39:35 mriedem well,
20:39:38 mriedem i guess the thinking was,
20:39:49 mriedem you'd only get that libvirtError if failing to attach the device in the guest failed
20:39:54 mriedem so there would be nothing to detach from the guest,
20:39:59 mriedem that's no longer the case with your change
20:40:10 mriedem b/c we have a new failure domain after the interface is attached into the guest
20:40:29 artom Aha, smart.
20:40:42 artom And that actually clarified the plug vs attach distinction in my head
20:40:55 artom plug = to the network
20:40:58 artom attach = to the guest
20:41:01 mriedem yeah
20:41:12 mriedem stepping back, what could _build_device_metadata actually fail on besides db/rpc traffic stuff
20:41:15 mriedem or coding errors
20:41:41 artom I looked through it, I didn't see anything besides what you mentioned.
20:42:26 cfriesen mriedem: do you think there's any point in further pursuing the live migration resource-tracking-numa-xml patches to try and get them merged, or should we give up and wait for jaypipes to fix it with the new placement/allocation code in queens?
20:42:55 mriedem cfriesen: i haven't dug into those,
20:43:05 mriedem but in general i wouldn't count on anything
20:43:13 artom mriedem, I need to run to fetch offsprings from daycare. I'll try to submit a new patchset tonight that detach_interface'es if _build_device_metadata fails
20:43:23 mriedem artom: ok
20:48:55 kashyap cfriesen: Hey, was travelling today. Just opened IRC & saw your ping (it's late here).
20:49:36 kashyap cfriesen: Is it about the stability of 'cpu-throttle-initial' and 'cpu-throttle-increment'?
20:49:48 kashyap If so, I can't say yet without digging myself, which I could only do tomorrow :-)
20:49:59 kashyap (Unless DanPB has already saw the email thread and responded there)
20:52:47 cfriesen kashyap: no worries. yeah, that's it. tomorrow's fine, and nobody has responded. :)
20:55:22 bauzas edleafe: not sure I understand why you're still working on my branch ?
20:55:22 openstackgerrit Hongbin Lu proposed openstack/nova master: [WIP] Handle exception on adding secgroup https://review.openstack.org/465173
20:55:29 openstackgerrit Ed Leafe proposed openstack/nova master: Remove selecting host based on host_subset_size https://review.openstack.org/465174
20:55:45 bauzas edleafe: please stop doing that !
20:56:03 bauzas I'm just uploading my series, and I'm working on it since yesterday !
20:56:50 bauzas edleafe: is it because you want your name on the BP ?
20:56:58 edleafe There was still some interest in my approach. dansmith asked that I change the way that instance UUIDs are passed.
20:57:07 edleafe bauzas: dpm
20:57:09 edleafe ugh
20:57:22 edleafe don't be silly. I don't care about names on BPs
20:57:33 bauzas I'm seriously nerved, because you're duplicating my series
20:57:35 dansmith edleafe: no, I'm not interested in the scheduler approach, I was just saying that if we need to pass the uuids, we should do them as a param
20:57:53 dansmith edleafe: I said if you wanted to re-open the discussion about conductor vs. scheduler you could
20:58:18 edleafe dansmith: ok, and yes, I do want to re-open, because I think this is much cleaner
20:58:42 dansmith bauzas: have you replied to any of the feedback on your series? because I don't think I've seen that and so it looks like nothing has happened on that set for quite a while
20:58:42 edleafe dansmith: the code is there and working OMM.
20:58:44 dansmith since before summit or so
20:58:49 bauzas sorry to have a family life, folks
20:59:23 bauzas if you want to see code, then...
21:01:37 cdent I reallly think we can do more to move code along in a collaborative fashion
21:02:11 cdent I generally think that if feedback has not had a response for a couple days that code is up for grabs to be fixed. I know that's not a standard that we have formalized, but I wonder if we should.
21:02:21 cdent This stuff needs to move a lot faster than it is
21:02:26 dansmith agree
21:02:34 edleafe that's more of a free-for-all than collaboration, though
21:02:37 openstackgerrit Hongbin Lu proposed openstack/nova master: [WIP] Handle exception on adding secgroup https://review.openstack.org/465173
21:02:40 bauzas cdent: sure, but when you're working on something since 2 days, and then seeing a concurrent patch, do you think your former 2 days were just done ?
21:02:58 cdent bauzas: the way to get around that is to respond to feedback first
21:03:17 dansmith bauzas: right, it's hard to know someone is working on feedback when there is no response :)
21:03:18 cdent edleafe: I agree there are ways to make it more clean, but in general principle...
21:03:20 bauzas for example, I said to edleafe that I was working on removing host_subset_size and then I see https://review.openstack.org/465174
21:03:30 delete hi, I am getting this error
21:03:31 delete GlanceConnectionFailed: Connection to glance host 198.23.82.11:9292 failed: Error finding address for https://198.23.82.11:9292/v1/images/detail?is_public=none&limit=20: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
21:03:37 delete glance is using a self-signd certificate
21:03:52 edleafe bauzas: and I told you that I had done it in a subsequent patch
21:03:54 bauzas dansmith: well, I pinged you and edleafe this morning explaining why I wasn't yet uploading my series
21:05:09 dansmith bauzas: yeah, but I hadn't seen any updates since then.. I guess I missed them
21:05:13 delete nevermind
21:07:37 openstackgerrit Sylvain Bauza proposed openstack/nova master: Delete existing allocations when retrying https://review.openstack.org/460433
21:07:37 openstackgerrit Sylvain Bauza proposed openstack/nova master: Don't delete allocation if instance being scheduled https://review.openstack.org/460177
21:07:37 openstackgerrit Sylvain Bauza proposed openstack/nova master: WIP: Allocate instance by the conductor https://review.openstack.org/460455
21:07:38 openstackgerrit Sylvain Bauza proposed openstack/nova master: WIP: Scheduler returning more than 1 host https://review.openstack.org/465175
21:07:46 bauzas dansmith: so ^
21:09:35 dansmith bauzas: cool, thanks.. I'm assuming edleafe pushed up something that caused a merge conflict?
21:10:05 bauzas FWIW, I'm just adding the RPC API version
21:16:07 efried dansmith Is there a generic, forward- and backward-compatible way I can tell (in my CI) whether cellsv2 is enabled?
21:16:18 efried Basically, I need to know whether to run that nova-manage command.
21:16:27 dansmith um
21:16:35 dansmith as of ocata it's always enabled
21:16:38 dansmith so, yes? :)
21:16:46 efried But would like to code it in such a way that my CI will work today on pre-ocata, but also into the future.
21:18:06 dansmith your CI doesn't know what release you're on?
21:18:33 efried dansmith Well, yeah, but it's kinda tough to say "greater than or equal to ocata"
21:19:00 efried I mean, that'll work (cause 'master' is >= 'ocata')... until we roll over from z back to a ;-)
21:19:35 dansmith welp... I dunno, maybe pick something you know is in ocata but not in newton that you can key off of? like the presence of cmd/nova-status or something?
21:20:26 efried Okay. I think we're going to go dumber than that. We're not CIing before newton, so we'll just say "if not newton". Thanks dansmith.
21:20:37 dansmith seems reasonable :)
21:32:09 edleafe bauzas: dansmith: I have another patch that adds returning multiple hosts to the conductor, but wasn't sure if there was an agreement on a) how to do it and b) how many

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