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#openstack-nova - 2019-03-07
17:45:26 sean-k-mooney oh ok i missed that then. cool
17:46:06 dansmith adding it in stein would tell them they need to do something they can't do until they deploy stein code
17:46:45 sean-k-mooney right because we are only adding the column in stien
17:49:10 jaypipes dansmith, mriedem: bottom 3 +W. still plowing through the nova-manage migration in https://review.openstack.org/#/c/633351...
17:51:17 openstackgerrit Matthew Booth proposed openstack/nova master: Allow utime call to fail on qcow2 image base file https://review.openstack.org/641315
17:51:42 mriedem jaypipes: don't make me get you a mr plow jacket
17:51:46 mriedem so you can strut around
17:52:07 mriedem https://www.youtube.com/watch?v=fhW3OyifFBE
17:54:24 dansmith mriedem: how would you communicate with the other members of the tribe if you didn't have the simpsons and every snippet documented on youtube?
17:54:34 mriedem grunts
17:54:43 mriedem flute sounds
17:55:05 jaypipes heh
17:55:44 mriedem jaypipes: so i think i'll abstain from proposing a unified limits session, it's out of my ability to lead that
17:57:28 jaypipes mriedem: I can participate in such a session.
17:58:04 mriedem i'm going to go participate in a bowl of chili
17:58:45 jaypipes :)
17:59:04 cdent a forum session with a chili bakeoff would be pretty cool
18:00:37 openstackgerrit Stephen Finucane proposed openstack/nova master: docs: Fix nits in remote console guide https://review.openstack.org/641098
18:00:38 openstackgerrit Stephen Finucane proposed openstack/nova master: docs: Rework all things metadata'y https://review.openstack.org/640730
18:00:38 openstackgerrit Stephen Finucane proposed openstack/nova master: conf: Rename 'configuration drive' to 'config drive' https://review.openstack.org/641723
18:03:59 jaypipes mriedem_afk, dansmith: please see my question on https://review.openstack.org/#/c/633351/. it's the only part of that migration I don't get...
18:06:06 dansmith jaypipes: replied
18:08:34 jaypipes dansmith: thx
18:33:39 openstackgerrit Merged openstack/nova master: FUP for test_reshape https://review.openstack.org/641482
18:33:57 openstackgerrit Merged openstack/nova master: Update --max-rows parameter description for archive_deleted_rows https://review.openstack.org/606995
18:34:07 openstackgerrit Merged openstack/nova master: tests: Create PCI tests for NUMA'y tests https://review.openstack.org/640826
18:41:54 mnaser i'm dealing with a sorts of 'usability' issue. booting a cinder volume from a glance image (where the image is stored on local disk)
18:42:08 mnaser cinder eventually creates the image, but it takes around 15 minutes because it has to download+upload
18:42:35 mnaser nova times out waiting for the volume, even though it's in `downloading` state
18:42:39 smcginnis mnaser: Do you have image cache enabled?
18:42:50 smcginnis That will help after the first one at least.
18:43:01 mnaser smcginnis: interesting, i don't think image cache is enabled for this deployment, but yes, that's a good idea
18:43:19 smcginnis Creating the boot volume via Nova timing out is a known issue of sorts.
18:43:27 smcginnis You need to tweak the timeouts if you do it that way.
18:43:36 mnaser the type of user is one who refuses to create a volume and wait for it to then attach it is the one i'm dealing with :)
18:43:39 smcginnis Really recommended to create the volume first, then boot from it.
18:43:51 mnaser "it should just work <insert a ton of exclamation marks>"
18:44:16 mriedem mnaser: sure, just tell them to pre-cache their images :)
18:44:19 smcginnis I've actually been meaning to see how difficult it would be to just update horizon to look like it's the one path, but do the two separate steps under the covers to make it less likely to time out.
18:44:55 mnaser i'm just trying to see if we can have a better way in terms of usability, if cinder is reporting that its' still 'downloading' really
18:45:15 mnaser also, another fun thing is that it seems like it doesn't properly clean up as it tries to request a delete on a volume that's in downloading process
18:45:26 mriedem mnaser: https://docs.openstack.org/nova/latest/configuration/config.html#DEFAULT.block_device_allocate_retries and https://docs.openstack.org/nova/latest/configuration/config.html#DEFAULT.block_device_allocate_retries_interval are the related nova-compute options
18:45:27 mnaser so seems like volumes end in error downloading state or something along those lines, but i haven't dug that far yet
18:45:56 mriedem it's this code https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L1308
18:46:06 smcginnis Hmm, error downloading sounds like a bigger issue to address first.
18:46:43 mnaser i just want to avoid changing the timeout to '15 minutes' because they will bring bigger images and then ask me to bump the timeout to '30 minutes' lols
18:46:51 mnaser smcginnis: yeah, let me see if i have tracebacks for that too
18:47:06 mriedem mnaser: this is the code that does the waiting and cleanup https://github.com/openstack/nova/blob/master/nova/virt/block_device.py#L689
18:47:17 mriedem nova won't delete the volume if delete_on_termination is False
18:47:20 mriedem which it is by default i think
18:51:21 mnaser i guess the cleanest way is image cache *but* that does involve booting it once still
18:51:38 mnaser we didn't have this issue when using cinder backend for glance
18:51:57 mnaser but then we have the issue with glance buffering a whole image to disk and then pushing to array
18:52:25 smcginnis I think I've been told if you use ceph it helps a lot.
18:52:36 mnaser yes we're hoping to kill off their dell ps array
18:52:44 mnaser ceph is wonderful for all of this
18:52:55 smcginnis That might be good anyway. PS is no longer going to be supported.
18:53:11 mnaser good, then we can force them to get off
18:53:12 mnaser :-P
18:53:23 smcginnis ;)
18:58:40 openstackgerrit Merged openstack/nova master: Move legacy-grenade-dsvm-neutron-multinode-live-migration in-tree https://review.openstack.org/640181
19:01:05 openstackgerrit Jack Ding proposed openstack/nova master: Preserve UEFI NVRAM variable store https://review.openstack.org/621646
19:07:26 openstackgerrit Matt Riedemann proposed openstack/nova master: Clean up block_device_allocate_retries config option help https://review.openstack.org/641759
19:07:27 mriedem mnaser: i'm having a problem letting shitty docs slide lately ^
19:08:36 mnaser mriedem: i like that
19:08:41 mnaser that's a lot more clear
19:10:57 openstackgerrit Merged openstack/nova master: Make nova-grenade-live-migration voting and gating https://review.openstack.org/640182
19:17:58 mnaser ok i've got this really strange breakage inside OSA that seems to happen within nova
19:18:04 mnaser http://logs.openstack.org/08/641308/2/check/openstack-ansible-deploy-aio_lxc-centos-7/2485c9a/logs/openstack/aio1-nova/nova-compute.log.txt.gz#_2019-03-06_12_35_49_535
19:18:10 mnaser "Neutron Reported failure on event network-vif-plugged-4095592d-730d-4a32-82b7-1ec3133f5862 for instance a43072b3-43e5-4fce-ae32-c11510b569fc: NovaException: In shutdown, no new events can be scheduled"
19:18:29 mnaser seems to me that the ` NovaException: In shutdown, no new events can be scheduled` portion is actually coming from `prepare_for_instance_event`
19:18:42 mnaser so the error is a bit misleading too
19:18:51 mriedem http://git.openstack.org/cgit/openstack/nova/tree/nova/compute/manager.py#n317
19:19:07 mnaser yeah, i dug that out, i need a faster way to link from vscode :<
19:19:23 mnaser i'm not sure what or why self._events is, and why it's set to `None`
19:19:31 mnaser the port seems to be plugging fine from the neutron side of things, according to the logs
19:19:45 mriedem self._events = None generally means nova-compute is stopping
19:20:05 mnaser strange, it doesn't seeeeeeem to be in those logs? you can see it continue to do things
19:20:09 mriedem http://git.openstack.org/cgit/openstack/nova/tree/nova/compute/manager.py#n397
19:20:33 mriedem the only thing that calls that is cleanup_host http://git.openstack.org/cgit/openstack/nova/tree/nova/compute/manager.py#n1236
19:20:45 dansmith that message is exactly what is supposed to happen if compute is shutting down
19:20:55 mriedem http://git.openstack.org/cgit/openstack/nova/tree/nova/service.py#n286
19:21:16 mnaser that's so strange, interestingly enough, the logs don't show anything about cleaning up
19:21:22 mnaser or any of the "popping stuff out of event queue" messages
19:21:50 mnaser we did recently merge a change where we had vif_plugging_is_fatal default to true, so this might have exposed something (and it was always failing?! i hope not..)
19:22:12 dansmith vif plugging fatal should be set to true
19:22:18 mnaser sorry, i mean we set it to false
19:22:22 dansmith ack okay
19:22:34 dansmith wait, you mean you had been setting it to false, and recently fixed that yeah?
19:22:39 mnaser yeah
19:22:44 dansmith either way, that won't affect the incoming events,
19:22:49 dansmith just whether or not we wait for them
19:22:58 dansmith and what you show above is just event delivery
19:23:00 mnaser well, if something was broken before, we probably just exposed it (in osa or whatever)
19:23:13 mnaser we might have been just blindly plugging ports and it just worked™ -- this just exposed it
19:23:29 mnaser the interesting thing is i dont see "Canceling in-flight event" in the logs anywhere
19:23:42 mnaser but i guess the blocking new events might do it there
19:23:42 mriedem https://review.openstack.org/#/c/420026/
19:23:47 mriedem ^ is it this?
19:23:58 mriedem did something sighup the service?

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