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Posted Nick Remark
#openstack-nova - 2018-11-26
22:40:52 efried yeah, I remember looking at this when I was working on https://review.openstack.org/#/c/615705/ to see if I could just real quick implement upt for all the drivers.
22:41:11 efried and realizing that was going to be more work than I was ready to undertake at the time.
22:41:50 efried but unwinding the gar stuff, that's going to require some synapses I haven't yet explored.
22:42:01 mriedem heh, good thing you noted that because i was just thinking about removing that old code path to see what would break
22:42:33 mriedem i haven't seen hyper-v run on the latest version of that, but zvm failed
22:42:35 efried any case, I think the point is that we can't rely on upt being in the code path for initial population of the root provider inventories.
22:42:59 efried yet
22:43:05 mriedem no it doesn't need to be though
22:43:21 efried if we want upt to be able to decide whether to use initial_*_allocation_ratio it does.
22:43:22 mriedem as of https://review.openstack.org/#/c/613126/, if a driver implements upt, it sets the allocation_ratio on the inventory it reports,
22:43:28 mriedem otherwise that normalize method in the RT does
22:43:31 mriedem _normalize_inventory_from_cn_obj
22:43:52 efried right, it sets the allocation ratio based on the non-initial_* conf values.
22:43:53 mriedem i think upt can determine if initi allocation ratios can be used though
22:43:57 efried how?
22:44:11 mriedem if the inventory for a given class is not in the tree, it's initial
22:45:13 efried Wait, did you just prove (to yourself, at least) that if upt is implemented, it *does* get first crack at the root provider inventory?
22:45:51 mriedem yes
22:45:59 mriedem i believe so anyway
22:46:22 efried should be relatively easy to prove with a func test?
22:46:54 mriedem i think the one i wrote here will do it https://review.openstack.org/#/c/613126/4/nova/tests/functional/compute/test_resource_tracker.py
22:47:08 mriedem along with the fake driver todo being resolved https://review.openstack.org/#/c/613126/4/nova/virt/fake.py
22:47:28 mriedem but yeah https://review.openstack.org/#/c/602804/ really needs to run through the expected / support scenarios in a functional test,
22:47:30 mriedem 1. initial create
22:47:35 mriedem 2. overwrite in placement API
22:47:39 mriedem 3. overwrite via config
22:48:01 mriedem and make sure #2 doesn't get f'ed up when the periodic runs
22:49:59 efried so we're talking about changing https://review.openstack.org/#/c/613126/4/nova/virt/libvirt/driver.py and its brethren to have logic like:
22:49:59 efried inv = ptree.data(root)
22:49:59 efried if CPU not in inv: ratio = CONF.initial_cpu_allocation_ratio or 16.0
22:49:59 efried else: ratio = CONF.cpu_allocation_ratio or 16.0
22:49:59 efried and similar for mem/disk?
22:50:18 efried oh, except f'ed up when periodic runs
22:50:23 mriedem the "or 16.0" gets removed
22:50:33 mriedem CONF.initial_cpu_allocation_ratio defaults to 16.0
22:50:33 efried the second one?
22:50:37 mriedem both
22:51:04 mriedem the non-initial else becomes only set the ratio if CONF.cpu_allocation_ratio is not None
22:51:11 efried right
22:51:12 efried so
22:51:13 mriedem in other words, don't change the allocation ratio if it was set externally
22:51:17 mriedem and config hasn't changed
22:51:55 efried if CPU not in inv: ratio = CONF.initial_cpu_allocation_ratio # which defaults to 16.0
22:51:55 efried elif CONF.cpu_allocation_ratio: ratio = CONF.cpu_allocation_ratio
22:51:55 efried # else no-op, leave it tf alone
22:52:13 mriedem exactly
22:52:35 efried I guess technically that last bit would have to be
22:52:35 efried else: ratio = data[CPU][ratio]
22:52:47 efried so it doesn't get omitted and wind up with the placement default :(
22:52:50 mriedem yup
22:53:21 efried okay, I can dig it. Assuming we can prove the upt-gets-initial-look thing. Let me take a look at that test you highlighted...
22:55:06 efried still looks slightly holey.
22:55:27 efried Let me go list all the permutations...
22:55:43 mriedem in yikun's patch?
22:55:47 mriedem i'm dumping notes in there
22:55:58 efried I'll just pastebin 'em for now
22:58:00 efried mm, if both values are set we want to end up with the conf one, so my above algo won't quite work
22:58:40 mriedem why not?
22:58:57 efried you would end up with the CONF.initial
22:59:05 efried until the next time update runs.
22:59:27 efried works if you reverse the conditions I think.
23:00:11 efried if CONF.cpu_allocation_ratio: ratio = CONF.cpu_allocation_ratio
23:00:11 efried elif CPU not in inv: ratio = CONF.initial_cpu_allocation_ratio # which defaults to 16.0
23:00:11 efried else: ratio = data[CPU][allocation_ratio]
23:00:15 mriedem you should only get initial config if CPU not in inv though
23:00:46 mriedem ok i think either would be ok
23:00:53 openstackgerrit Michael Still proposed openstack/nova master: Move bridge creation to privsep. https://review.openstack.org/620180
23:01:00 efried but in all cases if CONF.cpu_allocation_ratio is set you want *that* value - i.e. ignore initial_*
23:01:05 mriedem well well well, look who it is
23:01:12 efried brb
23:01:14 mriedem efried: true yeah
23:01:17 mriedem ok i got your point now
23:04:02 openstackgerrit Merged openstack/nova stable/queens: Fix NoneType error in _notify_volume_usage_detach https://review.openstack.org/614868
23:06:28 efried mriedem: I think we might strive to embed that logic in a base class helper somehow.
23:07:09 efried mriedem: to replace (and subsume) https://review.openstack.org/#/c/613126/4/nova/virt/driver.py@860
23:08:19 mriedem yeah it would be nice to not duplicate it all over the place
23:12:09 mriedem alright with that i'm done
23:12:13 mriedem efried: thanks for the sound board
23:12:22 efried fo sho
23:12:50 openstackgerrit Matt Riedemann proposed openstack/nova master: Drop cruft code for all_tenants behaviour https://review.openstack.org/620165
23:42:19 openstackgerrit Eric Fried proposed openstack/nova master: Add missing ws seperator between words https://review.openstack.org/618491
#openstack-nova - 2018-11-27
00:35:14 openstackgerrit Artom Lifshitz proposed openstack/nova master: Give drop_move_claim() correct docstring https://review.openstack.org/620170
01:01:05 openstackgerrit Vladyslav Drok proposed openstack/nova stable/pike: [pike-only] Fix resize_instance rpcapi call https://review.openstack.org/603439
01:06:36 openstackgerrit Vladyslav Drok proposed openstack/nova stable/pike: [pike-only] Fix resize_instance rpcapi call https://review.openstack.org/603439
05:48:41 openstackgerrit Merged openstack/nova master: Add missing ws seperator between words https://review.openstack.org/618491
06:21:17 openstackgerrit Takashi NATSUME proposed openstack/nova master: Remove Placement API reference https://review.openstack.org/614437
08:12:02 openstackgerrit Yikun Jiang proposed openstack/nova master: Change the default values of XXX_allocation_ratio https://review.openstack.org/602803
09:41:31 openstackgerrit Chris Dent proposed openstack/nova master: Use external placement in functional tests https://review.openstack.org/617941
09:41:31 openstackgerrit Chris Dent proposed openstack/nova master: WIP: Delete the placement code https://review.openstack.org/618215
10:25:30 openstackgerrit Chris Dent proposed openstack/nova master: Use external placement in functional tests https://review.openstack.org/617941
10:25:30 openstackgerrit Chris Dent proposed openstack/nova master: Delete the placement code https://review.openstack.org/618215
10:29:36 openstackgerrit Brin Zhang proposed openstack/nova master: Remove useless sample and add the lack of tests in v266 https://review.openstack.org/614671
11:52:03 openstackgerrit Merged openstack/nova stable/rocky: Make supports_direct_io work on 4096b sector size https://review.openstack.org/619251
12:29:47 openstackgerrit Yikun Jiang proposed openstack/nova master: Change the default values of XXX_allocation_ratio https://review.openstack.org/602803
12:29:48 openstackgerrit Yikun Jiang proposed openstack/nova master: Use new ``initial_xxx_allocation_ratio`` CONF https://review.openstack.org/602804
13:12:53 amab I've changed the default console from vnc to spice, but I get the error is this link: https://paste.ubuntu.com/p/MF6mFQBJ88/
13:53:32 mnaser https://review.openstack.org/#/c/619351/ stable/rocky fix merged, stable/queens up (sorry for my daily bugging alert :])
14:24:56 openstackgerrit Matt Riedemann proposed openstack/nova master: Default zero disk flavor to RULE_ADMIN_API in Stein https://review.openstack.org/603910
14:28:00 openstackgerrit Kashyap Chamarthy proposed openstack/nova master: libvirt: Refactor handling of PCIe root ports https://review.openstack.org/620327
14:33:55 dansmith mriedem: http://logs.openstack.org/04/620104/1/check/neutron-grenade/832c98f/logs/grenade.sh.txt.gz#_2018-11-26_19_52_27_042

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