Posted	Nick	Remark
#openstack-nova - 2017-08-10
09:16:20	ratailor	alex_xu, I also applied the collation logic to service table in nova_cell1 db, but here, case-insensitive check is getting passed.
09:16:47	alex_xu	but the hostname should be case-insensitive? whatever the user input COMPUTE0.example.com or compute0.example.com, it should works
09:17:01	ratailor	alex_xu, yes, I wan't to prevent from adding the case-insensitive host to host-aggregate.
09:17:42	ratailor	but aggregates store the hostname as COMPUTE0.example.com, whereas in db its compute0.example.com
09:18:16	ratailor	alex_xu, so that is what might be confusing scheduler.
09:20:05	alex_xu	ratailor: there is a related bug https://bugs.launchpad.net/nova/+bug/1538011
09:20:07	openstack	Launchpad bug 1538011 in OpenStack Compute (nova) "Metadata keys are not case sensitive" [Medium,In progress] - Assigned to Augustina Ragwitz (auggy)
09:20:53	ratailor	alex_xu, Thanks! let me check it.
09:21:09	alex_xu	ratailor: it would be great to check those two bugs, see the best way to fix
09:21:22	ratailor	alex_xu, sure.
09:22:33	alex_xu	ratailor: and there is a spec for that bug https://review.openstack.org/#/c/350843/, but didn't get merged
09:37:28	openstackgerrit	Vladyslav Drok proposed openstack/nova master: [placement] Add api-ref for RP usages https://review.openstack.org/450105
09:51:35	openstackgerrit	Rodolfo Alonso Hernandez proposed openstack/nova master: Add datapath type information to OVS vif objects https://review.openstack.org/474892
09:57:11	openstackgerrit	Vladyslav Drok proposed openstack/nova master: [placement] Make placement_api_docs.py failing https://review.openstack.org/480924
09:57:11	openstackgerrit	Vladyslav Drok proposed openstack/nova master: [placement] Add api-ref for allocation_candidates https://review.openstack.org/481112
10:01:34	alex_xu	cdent: bauzas this is ready for review https://review.openstack.org/#/q/topic:bug/1702420
10:01:58	cdent	alex_xu: thanks alex, I’ve got that in my queue to look at soon. Was it hard to resolve?
10:02:14	bauzas	alex_xu: thanks, will look to it asap
10:02:21	bauzas	just have some internal paperwork to do
10:02:39	alex_xu	cdent: after I pull some code into a sub-method, then thing gets a little better
10:02:55	cdent	ah, yeah, good idea
10:04:07	maciejjozefczyk	cdent: please add also this to your queue https://review.openstack.org/#/c/491808/
10:04:28	cdent	maciejjozefczyk: already there
10:04:36	maciejjozefczyk	cdent: :) thx
10:42:19	openstackgerrit	Sean Dague proposed openstack/nova master: Clarify that vlan feature means nova-network support https://review.openstack.org/478551
10:54:00	openstackgerrit	Merged openstack/nova master: Remove ram/disk sched filters from default list https://review.openstack.org/491854
10:57:37	openstackgerrit	Merged openstack/nova master: Mark Chance and Caching schedulers as deprecated https://review.openstack.org/492210
11:10:07	openstackgerrit	Balazs Gibizer proposed openstack/nova master: replace chance with filter scheduler in func tests https://review.openstack.org/491529
11:12:57	openstackgerrit	Merged openstack/python-novaclient master: Remove substitutions for command error msg https://review.openstack.org/490705
11:26:39	openstackgerrit	Merged openstack/nova master: [placement] Avoid error log on 405 response https://review.openstack.org/490021
11:26:40	openstackgerrit	Vladyslav Drok proposed openstack/nova master: [placement] Add api-ref for allocation_candidates https://review.openstack.org/481112
11:27:14	openstackgerrit	Vladyslav Drok proposed openstack/nova master: [placement] Make placement_api_docs.py failing https://review.openstack.org/480924
11:27:41	openstackgerrit	Merged openstack/nova master: api-ref: fix security_groups response parameter in os-security-groups https://review.openstack.org/489274
11:28:19	openstackgerrit	Merged openstack/nova master: api-ref: requested security groups are not applied to pre-existing ports https://review.openstack.org/489275
11:34:37	openstackgerrit	OpenStack Proposal Bot proposed openstack/nova master: Imported Translations from Zanata https://review.openstack.org/477091
11:39:04	openstackgerrit	Merged openstack/nova master: Remove translation of log messages https://review.openstack.org/466637
11:39:48	maciejjozefczyk	sdague: Could you check this one? https://review.openstack.org/#/c/491808/ please?
11:39:49	openstackgerrit	Merged openstack/nova master: remove mox from unit/virt/vmwareapi/test_driver_api.py https://review.openstack.org/452128
11:41:22	sdague	maciejjozefczyk: how does this handle the synchronization problem that now computes might be trying to delete the same instances at the same time?
11:41:39	sdague	previously, by being host scoped, this was a sharded problem
11:46:29	openstackgerrit	Merged openstack/nova master: imagebackend: cleanup constructor args to Rbd https://review.openstack.org/490499
11:47:13	openstackgerrit	Merged openstack/nova master: Add policy granularity to the Flavors API https://review.openstack.org/449288
11:49:29	sdague	ah, I see now
11:49:47	maciejjozefczyk	sdague: The problem is about instance (which is deleted from nova side) is still running on compute A, but nova says that its deleted and it was on host B
11:50:00	sdague	maciejjozefczyk: yeh, I get the problem
11:50:19	sdague	I was just trying to make sure that this didn't make it so that multiple computes were trying to delete the same instance
11:50:48	sdague	but _get_instances_on_driver should keep us sharded
11:51:06	maciejjozefczyk	yes
11:52:13	maciejjozefczyk	I'm going to work on patch to rollback migration if deletion of instance will be triggered, in near future
11:52:22	sdague	cool
11:52:49	maciejjozefczyk	but this fix for already 'lost' and 'working' zombiee instances i think should be in nova
11:53:30	maciejjozefczyk	in my installation I have hundreds of them
11:59:23	sdague	maciejjozefczyk: yep, +2 on this fix
12:00:34	maciejjozefczyk	sdague: thx
12:06:29	openstackgerrit	Alex Xu proposed openstack/nova master: placement: avoid returning duplicated alloc_reqs when no sharing rp https://review.openstack.org/492395
12:06:30	openstackgerrit	Alex Xu proposed openstack/nova master: placement: ensure RP maps to those RPs that share with it https://review.openstack.org/480379
12:06:36	alex_xu	cdent: thanks
12:06:46	openstackgerrit	Ilya Popov proposed openstack/nova master: Tests: Add cleanup of 'instances' directory https://review.openstack.org/491589
12:08:42	sdague	alex_xu: can I tempt you with doc patches? :)
12:08:56	sdague	mostly I'd like to get the manuals stuff merged before I go on vacation next week
12:09:30	sdague	https://review.openstack.org/#/q/status:open+project:openstack/nova+branch:master+topic:bp/doc-migration
12:10:09	alex_xu	sdague: yea, let me try
12:13:03	sdague	alex_xu: thank you
12:20:24	openstackgerrit	Chris Dent proposed openstack/nova master: placement: ensure RP maps to those RPs that share with it https://review.openstack.org/480379
12:54:14	openstackgerrit	Lee Yarwood proposed openstack/nova master: libvirt: Reconnect volumes and encryptors during a hard reboot https://review.openstack.org/400384
12:54:28	openstackgerrit	Lee Yarwood proposed openstack/nova master: compute: Detach volumes on _rebuild_default_impl failure https://review.openstack.org/442105
12:59:34	cdent	mriedem: i was partly thinking in terms of “don’t add more churn to zuul, now”
13:01:59	mriedem	mmm zuul churn
13:02:37	cdent	fresh and tasty
13:02:41	mriedem	artom: you love evacuate right?
13:02:54	mriedem	gibi: you love finding bugs right?
13:05:47	gibi	mriedem: I would put it I like finding them now than getting it from production :)
13:05:52	artom	mriedem, in the same way I love, err...
13:06:01	artom	Crap, it's too early for witty wordplay
13:06:08	artom	mriedem, anyways, what's up?
13:06:22	mriedem	my main worry evacuate from an ocata compute messing this up https://review.openstack.org/#/c/491012/
13:06:27	mriedem	artom: i don't know how much you've followed this
13:06:37	mriedem	but basically the filter scheduler creates allocations in placement now,
13:06:43	mriedem	on both the source and dest computes during a move
13:06:45	mriedem	like evacuate
13:07:28	mriedem	the problem is that the resource tracker has no concept of other providers than itself, so during it's periodic accounting updates, it overwrites allocations in placement for any other provider
13:07:37	mriedem	that patch ^ attempts to resolve that
13:08:03	mriedem	by using a minimum compute service version check - so once all of the computes are pike, it will stop doing it's local accounting
13:08:10	mriedem	and overwriting the stuff the scheduler created
13:08:54	mriedem	one of my worries is that we have an ocata compute that is forced-down, which takes it out of the service version check, but could still be running and trampling on things
13:09:47	mriedem	i think it's probably a small window because if you are forcing a compute down and evacuating from it, (1) you're likely to stop that host at some point and (2) once the instances move, the dest compute should be accounting for them - and the scheduler will also do that
13:10:43	artom	I'm fuzzy on the resource tracker having no concept of other providers than itself
13:11:02	artom	I thought compute nodes were resource providers?
13:11:21	mriedem	they are
13:11:32	openstackgerrit	Merged openstack/nova master: Keep the code consistent https://review.openstack.org/490304
13:12:04	mriedem	cdent: am i correct in saying that https://review.openstack.org/#/c/491012/ only applies to the periodic update_available_resource task?
13:12:15	mriedem	looks like that's the only place that _update_usage_from_instances is called from
13:12:19	openstackgerrit	Merged openstack/nova master: add description about key_name https://review.openstack.org/489525
13:13:07	cdent	mriedem: yes
13:13:10	mriedem	just thinking that if that code thinks everything is pike and doesn't auto-heal,
13:13:23	mriedem	and it misses the instance moving from the ocata compute,
13:13:31	mriedem	then we have to be sure that the rebuild_claim handles it
13:14:44	cdent	murgh
13:14:54	gibi	mriedem: if a compute host is forced_down it should mean that that compute host is fenced
13:15:16	gibi	mriedem: therefore it cannot tramp on allocations

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