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#openstack-nova - 2019-03-06
22:05:22 cfriesen mriedem: might want to check whether the last paragraph in https://bugs.launchpad.net/nova/+bug/1498126 is still applicable
22:05:23 openstack Launchpad bug 1498126 in OpenStack Compute (nova) "Inconsistencies with resource tracking in the case of resize operation." [Medium,Confirmed]
22:06:00 cfriesen mriedem: that bug is old enough that the code may be fixed by now
22:06:43 dansmith melwitt: sean-k-mooney: that's whyfor we have careful review and don't just slam everything in, IMHO
22:07:55 sean-k-mooney change is scary? or so that we can all check our understading of the change and its wider effect so that changin a thing does not change other tings unless we ment too
22:10:04 dansmith sean-k-mooney: no, the fear of weird side effects part.. that's why review from a heterogenous pool of experienced reviewers is important
22:10:14 mriedem cfriesen: you mean this? "drop_move_claim looks up the new_flavor to compare it with the flavor that was used to track the migration, but on the source node it's certain to be the old_flavor. Thus as it stands now drop_move_claim (only ran on source nodes) doesn't do anything. Not a big deal, but we should probably fix it."
22:10:25 cfriesen mriedem: yeah
22:10:47 cfriesen I haven't checked whether it still applies
22:10:50 mriedem i don't think that applies anymore, i'm not really sure what it's talking about
22:11:13 mriedem when confirm_resize calls drop_move_claim, it's from the source and dropping usage for the old_flavor
22:11:18 sean-k-mooney dansmith: yes because we all have different experice and approce solutions in different ways so we tend to see different things.
22:11:51 mriedem when revert_resize (on the dest) calls rt.drop_move_claim, it's dropping the new_flavor usage from the dest host
22:13:20 mriedem anyway, the bug i reported is something i hit in my cross-cell resize functional tests for confirm resize and should be really easy to recreate in general
22:13:39 mriedem auto-confirm the resize and set the update_available_resource interval to a high number, like 10 minutes
22:16:31 cfriesen mriedem: I think you're right and it doesn't apply anymore.
22:17:20 sean-k-mooney dansmith: by the way the horrible code in https://review.openstack.org/#/c/624592/9/nova/network/linux_net.py
22:17:36 sean-k-mooney we have the same code more or less in os-vif https://github.com/openstack/os-vif/blob/master/vif_plug_linux_bridge/linux_net.py#L115-L153
22:20:42 sean-k-mooney we also have iptables code we inheritied form nova networks in the linux bridge plugin.
22:23:00 sean-k-mooney i wouldnt be too surpisidn if we could replace alot of this code wide a call to plug on the linux bridge driver
22:23:16 sean-k-mooney *surprised
22:27:16 mikal efried: I effectively did this sort of thing with the nova-net privsep thing. I'd much rather end up with mock decorators on the methods which actually need them. Otherwise its super hard to untangle what calls what when something fails. I can take a look at this later, but only if people say one nice thing about me each day. Today's topic can be how pleasing my hairstyling is. Go.
22:28:18 efried I saw a shampoo commercial the other day and thought of you.
22:29:42 efried mikal: Did you see conversation above where I said: this is stage 1, so we don't have to have "passthrough mocks" in the fake module. Stage 2-N might be to remove the remaining mocks one at a time, see which tests break, and explicitly mock the removed thingy in those tests.
22:29:58 mikal No not really. I was trying to remember how jeans work.
22:30:17 mikal I didn't read all the scrollback, it looked long and boring.
22:31:45 efried it was
22:31:51 sean-k-mooney mikal: fyi dansmith reorderd some of you privsep removal code so the 4 patchs with +w can merge without being blocked by https://review.openstack.org/#/c/624592
22:32:01 efried mikal: that's why I extracted the salient bit of it for you. So you wouldn't have to mess up your hair.
22:32:05 efried or... something.
22:32:30 mikal sean-k-mooney: careful. Some of us said regrettable things when we noticed that but hadn't yet had our valium for the day.
22:38:00 sean-k-mooney mikal: i assumed you would be happy that 4 more of them are currently makeing there way through the gate
22:38:34 sean-k-mooney mikal: but on a releated note we have similar code in os-vif which i kindof want to kill at some point once i figure out why we do it
22:38:35 sean-k-mooney https://github.com/openstack/os-vif/blob/master/vif_plug_linux_bridge/linux_net.py#L115-L153
22:49:55 efried mriedem: Are we waiting for train for https://review.openstack.org/#/c/633855/ series? (SEV stuff)
22:51:55 mriedem efried: yes
22:52:34 efried mriedem: procedural hold so I don't keep looking at it and trying to decide whether to approve it?
22:53:41 mikal Oh wow, this is terrible. Did you know we sometimes mock away the fake for that fake_libvirt_utils thing? Why? Who did this?!?
22:54:28 mriedem efried: i put a -W on the 2nd patch in the series which adds the capability which will now auto-generate the trait on the compute node resource provider,
22:54:41 mriedem i avoided the -2 to not blow up jay's beautiful stats
22:54:51 efried mriedem: ack
22:54:53 sean-k-mooney mikal: do you know that we somtimes import the fake_libvirt direver for the unit tests in too fucntional tests
22:54:59 mriedem efried: as for the one below that, i don't have an opinion
22:55:07 efried mikal: You mean mock.patch(restore original method)?
22:55:20 efried that's pretty fantastic
22:55:32 mikal efried: no, its even more useless. We do a mock.patch to a noop for a function THAT IS ALREADY A NOOP.
22:55:39 efried wow
22:56:17 sean-k-mooney mikal: well actully that is proably new test that were written without knowing that ere was a global mock
22:56:45 sean-k-mooney so those test are actully proably mocking just the things they need to mock
22:56:49 sean-k-mooney which is good
22:57:24 sean-k-mooney the fact it was already mocked is wasteful but it does not hurt anything
22:58:14 sean-k-mooney by the way is there a reason the fake libvirt dirver is not with the other virt dirvers like the the Fake virt diriver is?
22:59:10 mikal sean-k-mooney: please don't ask logical questions, it just makes use feel even more inadequate
23:08:22 mikal Herm. Turns out we apply the fake_libvirt_utils fixture in many places it isn't even used.
23:08:33 mikal This rathole is nice. I like it. It feels like home.
23:23:36 mikal Wait what? nova.virt.libvirt.utils.file_open is definitely my favourite part of all this.
23:25:13 cfriesen mikal: did you intentionally omit "mv" or "cp" from privsep?
23:27:14 mikal cfriesen: privsep only has things which had callers. So an absence either means that the user hasn't merged yet, or there is no user in nova until you came along.
23:28:03 openstackgerrit melanie witt proposed openstack/nova master: Add user_id field to InstanceMapping https://review.openstack.org/633350
23:28:04 openstackgerrit melanie witt proposed openstack/nova master: Populate InstanceMapping.user_id during migrations and schedules https://review.openstack.org/638574
23:28:04 openstackgerrit melanie witt proposed openstack/nova master: Add online data migration for populating user_id https://review.openstack.org/633351
23:28:05 openstackgerrit melanie witt proposed openstack/nova master: Add get_counts() to InstanceMappingList https://review.openstack.org/638072
23:28:05 openstackgerrit melanie witt proposed openstack/nova master: Count instances from mappings and cores/ram from placement https://review.openstack.org/638073
23:28:06 openstackgerrit melanie witt proposed openstack/nova master: Use instance mappings to count server group members https://review.openstack.org/638324
23:29:02 cfriesen mikal: I need to copy a subtree under /var/lib/libvirt/swtpm/<uuid> and recursively chmod or chown it. On the dest I need to do the opposite.
23:29:30 cfriesen I'm wondering whether from a security standpoint it'd make more sense to create these under libvirt, or as generic operations in path.py
23:30:49 mikal cfriesen: I think I'd put it under path, it seems generically useful.
23:31:03 mikal cfriesen: there's no security difference between either location, its more about who uses it.
23:37:01 openstackgerrit Takashi NATSUME proposed openstack/nova master: Remove mox in virt/test_block_device.py https://review.openstack.org/566153
23:37:33 openstackgerrit Takashi NATSUME proposed openstack/nova stable/queens: Add description of custom resource classes https://review.openstack.org/619125
23:45:53 openstackgerrit melanie witt proposed openstack/nova master: Add online data migration for populating user_id https://review.openstack.org/633351
23:45:54 openstackgerrit melanie witt proposed openstack/nova master: Add get_counts() to InstanceMappingList https://review.openstack.org/638072
23:45:54 openstackgerrit melanie witt proposed openstack/nova master: Count instances from mappings and cores/ram from placement https://review.openstack.org/638073
23:45:55 openstackgerrit melanie witt proposed openstack/nova master: Use instance mappings to count server group members https://review.openstack.org/638324
23:52:24 openstackgerrit Matt Riedemann proposed openstack/nova master: Add functional recreate test for bug 1818914 https://review.openstack.org/641521
23:52:26 openstack bug 1818914 in OpenStack Compute (nova) "Hypervisor resource usage on source still shows old flavor usage after resize confirm until update_available_resource periodic runs" [Low,Triaged] https://launchpad.net/bugs/1818914
23:52:26 mriedem cfriesen: ^ recreate test at least
23:59:43 melwitt mriedem: I think I'm not going to be able to be around tomorrow... :( on that note, I'm not sure how helpful it'd be to land the migration without the user-impacting changes,
#openstack-nova - 2019-03-07
00:00:14 melwitt there's an open question on the bottom patch about what table index(es) we should add, need jay's input for that
00:01:11 mriedem melwitt: ok...who is dealing with final client release and any tags we need (don't think we do milestone tags for nova anymore)
00:01:47 mriedem shit this reminds me that we need a python-novaclient bump for 2.72 if we want to supported bw provider ports with nova boot...
00:01:49 mriedem gibi: ^
00:02:02 melwitt mriedem: I hoped to get https://review.openstack.org/640898 out in the final osc-placement release. I can propose the novaclient release tonight, same with osc-placement if you think the allocation ratio change won't make it
00:02:36 mriedem i haven't reviewed that allocation ratio thing, it's late for that imo
00:03:04 mriedem the instance mapping user_id is valuable in stein if we can get it because it means less data to migrate in train
00:03:20 mriedem i'm also assuming cern is going to be backporting this stuff...
00:03:26 efried cfriesen: still around?
00:03:28 melwitt ok. that's too bad. cdent and I have tested it locally a bit and it has a func test, but yeah
00:03:28 mriedem i.e. the counting quota stuff from train to stein
00:03:46 mriedem well, it was posted 2 days ago so...
00:04:20 mriedem anyway, i can do a novaclient release tomorrow since we need 2.72 for gibi's stuff
00:04:28 melwitt yeah, I spent a long time writing the func test for it. I guess I could have uploaded it in two stages
00:04:32 efried cfriesen: going once... okay, I'm going to update the commit message on https://review.openstack.org/#/c/641480/ and +2 it.
00:04:34 mriedem and i'd like to ge the instance mapping user_id stuff in at least for the 'less data to migrate' thing
00:04:52 openstackgerrit Eric Fried proposed openstack/nova master: Add missing libvirt exception during device detach https://review.openstack.org/641480
00:05:00 melwitt ok. I'll propose the osc-placement release tonight then
00:05:14 melwitt feel free to make whatever changes are needed to the counting quotas migration stuff tomorrow
00:05:28 melwitt (anyone feel free)
00:06:16 melwitt I guess the osc-placement thing isn't so big a deal because could have another release soon-ish and not hard for people to upgrade
00:06:28 melwitt client stuff is a lot easier

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