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#openstack-nova - 2019-08-29
12:45:32 alex_xu anyway, i want to end today early. see you guys tomorrow~
12:45:45 stephenfin o/
12:53:25 openstackgerrit Merged openstack/nova stable/stein: Delete unused get_all_host_states method https://review.opendev.org/676255
12:53:37 stephenfin sean-k-mooney: https://etherpad.openstack.org/p/nova-cpu-resources
13:01:00 sean-k-mooney cool ill try and find time to do that proably on tuesday but ill see if i can get to it sooner.
13:01:21 sean-k-mooney stephenfin: do you want me to test on real hardware or vms
13:01:31 stephenfin VMs should be fine, right?
13:01:40 stephenfin there's nothing hardware specific about this
13:02:05 sean-k-mooney ok if i dont need to use the hardware im using to test artoms stuff that makes it simpler to test
13:15:23 openstackgerrit Merged openstack/nova stable/stein: Convert HostMapping.cells to a dict https://review.opendev.org/676256
13:15:30 openstackgerrit Merged openstack/nova stable/stein: Cache host to cell mapping in HostManager https://review.opendev.org/676257
13:15:38 openstackgerrit Merged openstack/nova master: Revert "Filter UnsupportedServiceVersion warning" https://review.opendev.org/677825
13:17:52 openstackgerrit Kobi Samoray proposed openstack/nova master: Avoid fetching metadata when no subnets found https://review.opendev.org/679247
13:21:27 efried stephenfin: you around? I keep trying to context-switch in before asking you these questions, but it's always too late by then. So I'm going to be a bit off the cuff here...
13:21:38 stephenfin I am
13:21:40 stephenfin go for it
13:21:49 openstackgerrit Shilpa Devharakar proposed openstack/nova master: DB API changes to get non-matching aggregates from metadata https://review.opendev.org/671074
13:21:49 openstackgerrit Shilpa Devharakar proposed openstack/nova master: Nova object changes for forbidden aggregates request filter https://review.opendev.org/671072
13:21:50 openstackgerrit Shilpa Devharakar proposed openstack/nova master: Enable request filter isolate_aggregates https://review.opendev.org/667952
13:21:50 openstackgerrit Shilpa Devharakar proposed openstack/nova master: Add a new request filter to isolate aggregates https://review.opendev.org/671075
13:23:03 efried stephenfin: okay: Am I crazy or do I remember somewhere in the cpu-resources series where you are making a design decision based on the assumption that operators are supposed to be segregating their dedicated instances from their shared instances?
13:23:21 stephenfin that was there but it's gone now
13:24:23 efried okay, cause my next question was going to be: ...but post- the feature, you *can* put shared and dedicated instances on the same host, right?
13:24:33 efried ...just not shared & dedicated on the same *guest*.
13:24:33 stephenfin correct
13:24:37 stephenfin yup
13:24:58 efried cool. Cause otherwise... not much point configuring both shared & dedicated set, eh? :P
13:25:02 efried okay, next thing...
13:26:20 efried (in -oslo)
13:30:21 mriedem dansmith: i've updated this prep resize at dest cross-cell patch to remove some of the unused stuff and cleanup the commit/docstrings https://review.opendev.org/#/c/633293/46 - i'm still not really sold on munging this into the existing prep_resize and tried to explain why in the commit and docstring on the method if that helps
13:31:18 mriedem i of course can if it's going to be a blocker, i think it would mean changing prep_resize to consider if migration.cross_cell_move is True and if so, don't reschedule and don't cast to resize_instance on the source
13:34:23 bauzas efried: I think we stated a lot of implications between shared and pinned instances in the spec
13:35:58 efried bauzas: Yeah, I just got a poke from elsewhere that made me remember seeing that assumption/limitation in the code somewhere and I was like "wha...?"
13:36:20 bauzas efried: I'd recommend you to open the spec while you review the cpu-resources series
13:36:29 bauzas that and take some aspirin
13:36:47 bauzas I've started reviewing it but I'm not yet able to sharpen my pen
13:36:50 efried yes, I have it (the in-flight edited version) open.
13:37:24 efried I've been thrashing like a 386 running minecraft though, been reviewing like three patches every other day.
13:42:03 openstackgerrit Balazs Gibizer proposed openstack/nova master: Move live_migration test hooks under gate/ https://review.opendev.org/679251
13:44:28 openstackgerrit Balazs Gibizer proposed openstack/nova master: Rename the nova-grenade-live-migration job to nova-grenade-multinode https://review.opendev.org/678841
13:44:40 openstackgerrit Merged openstack/nova master: Docs and functional test for max_local_block_devices https://review.opendev.org/678268
13:44:56 openstackgerrit Merged openstack/nova master: Add a "Caveats" section to the eventlet profiling docs https://review.opendev.org/676672
13:45:05 openstackgerrit Merged openstack/nova master: docs: pretty up return code table or heal_allocations https://review.opendev.org/678063
13:45:18 openstackgerrit Merged openstack/nova master: doc: pretty up return code table for sync_aggregates https://review.opendev.org/678064
13:46:59 openstackgerrit Balazs Gibizer proposed openstack/nova master: Add cold migrate and resize to nova-grenade-multinode https://review.opendev.org/679210
13:47:38 Sundar mriedem: Re. the comment in https://etherpad.openstack.org/p/nova-runways-train that tests are failing on Cyborg patches, as of now, they are few and seem unrelated to the code. Even back then, there was really only 1 failure related to the patches. What can we do to get reviews on these patches?
13:49:48 openstackgerrit Merged openstack/nova master: rbd: use MAX_AVAIL stat for reporting bytes available https://review.opendev.org/556692
13:52:09 openstackgerrit Merged openstack/nova master: Switch some GitHub URLs to point to opendev.org https://review.opendev.org/677185
13:52:17 openstackgerrit Merged openstack/nova stable/stein: Add useful error log when _determine_version_cap raises DBNotAllowed https://review.opendev.org/675714
13:53:11 mriedem Sundar: fair enough, i just looked through the series and the failed tests and indeed they look unrelated, just need rechecking
13:53:30 mriedem as for review, i didn't know it was ready yet - i thought most of the work was being done on the cyborg side (i see the series there isn't merged yet either)
13:53:54 donnyd efried: so it looks like changing consecutive_build_service_disable_threshold=0 solved the issues with ghost disabling of the FN hypervisors. Now I just need to find the proper weight to associate with build_failure_weight_multiplier
13:54:19 mriedem Sundar: it might be good to post something short to the mailing list given a status update, e.g. where the nova patches are (what's ready, what's not - known limitations), and what's going on on the cyborg side - and what the status is on getting a fake cyborg driver for integration testing with tempest going so we can have more confidence in the nova patches
13:55:07 mriedem donnyd: i don't think you do if you set consecutive_build_service_disable_threshold=0
13:55:17 mriedem 0 * any weight multiplier is 0
13:55:47 donnyd mriedem: I am going to set that back to an appropriate value, was just making sure that was the reason the hypervisors were being ghost disabled
13:56:31 donnyd I don't want actually broken hypervisors to be in system if nova will take care of that for me
13:57:19 donnyd But i am thinking changing it back to something reasonable, and then setting a weight that doesn't take it out of system for too long would be a good resolution
13:57:54 donnyd but I also may not fully understand how build_failure_weight_multiplier works... so I am going to science the crap out of it
13:58:45 mriedem ♪ she blinded me with science ♪
14:02:52 Sundar mriedem: Yes, but we are able to test with the Cyborg patches. We will merge them soon.
14:03:00 artom Huh, looks like the NUMA functional tests never actually used the NUMATopologyFilter...
14:03:02 bauzas stephenfin: I'm pretty done with the first patch but I'm confused about one last bit
14:03:10 stephenfin hit me
14:03:16 artom At least, based on the debug logs I'm seeing, that filter's not in there...
14:03:49 artom Err
14:03:55 artom Ignore me :(
14:03:56 bauzas stephenfin: after looking and looking the spec, can't say whether VCPU resources can potentially change or not based on the flags
14:04:07 mriedem artom: see ♪
14:04:09 mriedem damn
14:04:13 mriedem NUMAServersTestBase
14:04:22 mriedem group='filter_scheduler')
14:04:22 mriedem ['NUMATopologyFilter'],
14:04:22 mriedem self.flags(enabled_filters=CONF.filter_scheduler.enabled_filters +
14:04:32 artom mriedem, right, I know the code's there, I just thought it didn't work for some reason
14:04:52 mriedem throw a raise Exception('does this work?') into the filter and see
14:04:54 stephenfin artom: They definitely use the filter. We've got checks on its side effects
14:04:56 mriedem professional debugging
14:05:07 artom So it's just my func test then :(
14:05:31 bauzas stephenfin: previously, we were only reporting a total VCPUs
14:05:41 bauzas stephenfin: now, we're about to report both VCPU and PCPU
14:05:51 bauzas based on the flags use
14:06:10 stephenfin bauzas: So if I'm understanding you correctly...
14:06:13 stephenfin Previously:
14:06:36 stephenfin no CPU-related configuration -> report all host CPUs (online and offline) as VCPU
14:06:53 stephenfin 'vcpu_pin_set' -> report all host CPUs listed in this option as VCPU
14:06:54 bauzas correct
14:07:12 stephenfin (and there's a check to make sure everything listed in 'vcpu_pin_set' is online)
14:07:15 sean-k-mooney stephenfin: vcpu_pin_set requried all cpus to be online
14:07:23 mriedem damn melwitt is out today and tomorrow
14:07:26 sean-k-mooney if it they were not you could not start the agent
14:07:29 bauzas and dansmith too
14:07:33 stephenfin sean-k-mooney: Ooof, beaten to the punch ;)
14:07:34 bauzas mriedem: ^
14:07:46 mriedem dan is out tomorrow
14:07:49 stephenfin After:
14:07:51 mriedem i thought anyway
14:07:55 sean-k-mooney stephenfin: :)
14:08:12 bauzas gosh, those people taking perpetual PTOs...
14:08:12 stephenfin no CPU-related configuration -> report all *online* host CPUs as VCPU

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