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#openstack-nova - 2020-01-27
16:46:13 tosky and tosky wasn't able to find a proper workaround for the failures when using grenade plugins (shame on him)
16:54:58 melwitt tosky: do you have a change where you are working on getting plugins to work? is that here? https://review.opendev.org/639774 is there any way we could help?
16:56:46 tosky melwitt: I don't have a change; the problem is that I'm not able to figure out where the py2 openstackclient is installed and make sure its CLI used over its py3 counterpart
16:57:08 melwitt oh, interesting
16:57:26 tosky I would expect that starting from a py3 deployment, even if the py2 version is installed afterwards, the py3 version installed first would still be the one used for the CLI
17:00:10 melwitt I would expect that as well
17:01:28 stephenfin efried: create a blueprint for what?
17:02:43 lyarwood stephenfin: https://review.opendev.org/702943 - I think he was talking about that spec that had just merged.
17:03:01 stephenfin ah, makes sense
17:03:03 stephenfin will do
17:03:32 tosky talking about jobs, a few days ago the nova-live-migration job was failing in stable/pike; do you know if it has been solved?
17:04:38 melwitt tosky: it has not been solved yet. sean-k-mooney said they would try to dig into it more soon. it's not 100% failure rate but seems like it's close to that
17:06:44 efried stephenfin: I was talking about https://review.opendev.org/#/c/682655/
17:07:04 efried It looks like you're using a new bp name for this round, but there's no bp by that name.
17:09:31 openstackgerrit Lee Yarwood proposed openstack/nova master: zuul: Switch to the Zuulv3 grenade job https://review.opendev.org/704364
17:10:50 stephenfin efried: https://blueprints.launchpad.net/nova/+spec/flavor-extra-spec-validators
17:11:00 efried thanks
17:15:19 sean-k-mooney tosky: its actully the other way around. which ever version is installed last get used but only if its the first installation
17:15:40 sean-k-mooney if you upgrade an existing install it does not replace the console script i think
17:16:11 sean-k-mooney so ify its py2 then py3 on n-1 1 and py3 only on n i thing the console scrript will point to py2
17:17:15 sean-k-mooney anyway its a bit of a pain. we likely should make the py2 install in py3 mode optional in train
17:17:26 sean-k-mooney so we can disable it in the greade job
17:18:15 sean-k-mooney but yes i will try to look at nova-live-migration this week. i think i have got a downstream backport working so i should have more time to look at it this week
17:18:35 sean-k-mooney i might try to set aside tomorow to look at it
17:26:32 stephenfin gibi: RE: https://review.opendev.org/#/c/701763/4/specs/ussuri/approved/non-admin-filter-instance-by-az.rst@83, are you saying it's not possible to use policy to allow any user access to the API?
17:28:45 gibi stephenfin: I think the policy is not per field
17:30:12 gibi stephenfin: so if we want to make some fields available for filtering to the normal user then we need to change code
17:31:39 stephenfin Oh, so even with this spec there are fields that the admin will be able to filter on but not a normal user?
17:31:52 stephenfin I missed that, if so
17:33:01 gibi stephenfin: yeah I think so
17:33:11 stephenfin riiight, okay then, my bad
17:33:16 gibi admin can filter on admin only fields too
17:33:34 stephenfin lemme double that check and then I'll hit it again
17:33:34 gibi I mean those fields that are not returned in the GET /servers/ to non-admins
17:33:44 stephenfin yeah, makes sense in hindsight
17:37:14 tosky sean-k-mooney: thanks for both :)
19:18:32 openstackgerrit Merged openstack/nova stable/pike: Avoid redundant initialize_connection on source post live migration https://review.opendev.org/683008
19:27:28 KeithMnemonic Eureka, that BDM patch on stable/pike finally merged. Thanks a ton for all of your endless help mriedem: , melwitt: and of course hemna:
19:39:04 melwitt cool KeithMnemonic
20:13:59 openstackgerrit Lee Yarwood proposed openstack/nova master: zuul: Add Fedora based jobs to the experimental queue https://review.opendev.org/701231
20:14:08 openstackgerrit Lee Yarwood proposed openstack/nova master: WIP libvirt: Use virDomainBlockCopy to swap volumes with >= 5.10.0 https://review.opendev.org/696834
23:18:24 efried dansmith: remind me (again) which direction we're allowed to have mismatched versions: controller newer than compute or vice versa?
23:22:30 sean-k-mooney controler newer then compute i think
23:22:54 sean-k-mooney we expect the contol plane to be upgraded first
23:25:04 efried k
23:26:44 sean-k-mooney in either case the sender is ment to back level to the max version supported by the reciver if memory serves. greade upgrade the contol plane first so that is what we test.
23:27:28 efried I'm trying to understand the upgrade implications of the extra spec validation thing.
23:27:45 sean-k-mooney ah ok
23:28:53 sean-k-mooney that does rais an intersting question. if the extra specs were ovo should you allow the flaovr to be back leveled if a unsupporte extra spec was requested.
23:29:26 sean-k-mooney i have not review that proposal by the way so that is jsut me specualting but i would lean towrads no
23:29:32 efried I think it's simpler than that.
23:30:23 efried Ultimately an extra spec that's used on/by the compute (which is many of them) is being validated at the API.
23:30:50 sean-k-mooney yes at least initally
23:31:23 efried and if the versions are mismatched, we could have an extra spec that the control plane (because newer) understands, but the compute won't. If the developer of that extra spec is doing their job right, they'll have tied it to a request filter so you would never land on that compute, so probably no big deal.
23:31:48 efried But the other way around is also possible. If we deprecate/remove support for an extra spec, the control plane thinks it's invalid while the compute still supports it.
23:32:15 efried I guess that means you have to wait *two* cycles before you get to add the validator that forbids the removed extra spec.
23:32:16 efried or something.
23:33:07 sean-k-mooney ya althoguh im not sure we have ever remvoed an extra spec
23:33:28 sean-k-mooney i can think of one or two i woudl consider removing but i dont think we have ever actully done it
23:33:50 sean-k-mooney and actully i have reviewd https://review.opendev.org/#/c/682655/1/specs/ussuri/approved/flavor-extra-spec-validators.rst but it was last cycle
#openstack-nova - 2020-01-28
00:13:19 dansmith efried: compute is the only thing allowed to be old
00:13:25 efried ack
00:13:59 dansmith efried: the controllers are always required to enforce the version rule, so if it's something that the compute might not be able to do, it needs to check the version and refuse, downlevel, or find a compute that *can* handle it
00:14:24 efried right, but the point of this validation is that it's done at flavor creation time -- there's no compute in the picture.
00:14:53 efried sorry, you were answering my actual question, thanks.
00:15:21 dansmith there's compute at boot time, so you can create a newer flavor, you just need to refuse to boot an instance from it when there are no computes able to handle the request
00:16:40 efried right
00:17:16 efried we just need to be careful not to enforce a new rule that strictifies something until we're sure all the computes are upgraded. Kind of thing.
00:17:51 dansmith not sure what you mean exactly..
00:18:28 dansmith you want to ban creation of the flavor with something if some computes are still old? that's definitely okay if it's appropriate, just not required if it's a spec that just specifies something about the instance
00:20:11 efried I'm saying if we decide to, I don't know, deprecate and remove the 'shared' hw:cpu_policy, it would be reasonable to think you could change the validator accordingly to bounce new flavors with hw:cpu_policy=shared. But you can't, because old computes can (and should be allowed to) still handle 'shared'.
00:20:42 efried (I know that's not a good example, just trying to explain the issue.)
00:22:18 sean-k-mooney am we proably would want a config option of some kind to to contol how deprecations are treated
00:22:48 sean-k-mooney so warn by default and make it an error if you opt in.
00:23:14 sean-k-mooney or something but i thnk we can cross that bridge when we have a example that requires it
00:24:11 efried Well, I definitely think we should have a granny switch that turns the whole validator on or off.
00:24:23 efried I don't know about per-key, if that's what you're suggesting.
00:24:42 sean-k-mooney i was more thinkg a strict vs compatiblity mode thing
00:24:55 sean-k-mooney rather then per key
00:26:34 sean-k-mooney if we wanted to deprecate something then we would mark it as such in the validtor and consier it an error in stict mode but just warn on it in compatibliyt mode. then if we drop support entirely we can graduate to always an error becasue we know it will not be supprotin in n+X releases
00:26:52 sean-k-mooney that said im not sure we need to do that
00:27:15 sean-k-mooney if the extra spec is not support by a compute anymore its just ignored
00:27:51 dansmith efried: right so that's an example where controlling the flavor definition based on compute levels would be good.. where changing the flavor impacts the way computes behave, as opposed to just something that affects the instance like a new disk controller or something
00:28:40 efried yikes.
00:29:12 dansmith yikes/
00:29:15 dansmith I'm agreeing with you
00:29:24 dansmith I mean, I think :D
06:29:53 HagunKim Hello, Nova! I have a question. Sometimes my VMs are deleted unexpectedly. What conf or log should I check??
06:29:53 HagunKim Here is nova-compute log when a vm is deleted. I removed date, req. id, instance id.
06:29:53 HagunKim INFO nova.compute.manager [instance: intance id] Terminating instance
06:29:53 HagunKim INFO nova.virt.libvirt.driver [-] [instance: intance id] Instance destroyed successfully.
06:29:54 HagunKim INFO nova.compute.manager [-] [instance: intance id] VM Stopped (Lifecycle Event)
06:29:54 HagunKim INFO nova.compute.manager [instance: intance id] During sync_power_state the instance has a pending task (deleting). Skip.
06:29:55 HagunKim INFO nova.virt.libvirt.driver [instance: intance id] Deleting instance files /var/lib/nova/instances/instance_id_del
06:29:55 HagunKim INFO nova.virt.libvirt.driver [instance: intance id] Deletion of /var/lib/nova/instances/instance_id_del complete
06:29:56 HagunKim INFO nova.compute.manager [instance: intance id] Took 23.99 seconds to destroy the instance on the hypervisor.
08:29:07 gibi HagunKim: with the request_id from your log I would grep the nova logs to see what other events lead to the deletion of the instance
08:29:22 bauzas good morning Nova
08:31:23 gibi bauzas: good morning
08:31:44 bauzas gibi: how are you ? I was a bit on and off last week

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