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#openstack-nova - 2018-01-11
14:11:02 bauzas while it's already been defined !
14:11:23 bauzas mdbooth: any idea you know why ?
14:11:25 mdbooth Yeah, that's... suboptimal.
14:11:34 bauzas that's rather errorprone
14:11:52 mdbooth A legacy design choice that Nova is the ultimate source of truth. It means we lose stuff like device ordering and address assignments.
14:13:04 bauzas I can understand the reasoning
14:13:12 bauzas but then, you somehow need to persist that
14:13:19 bauzas and rather not rebuilding it
14:13:23 bauzas but that's MHO
14:13:34 bauzas and I'm possibly missing some design choices
14:14:28 artom It may have come from the need to support other drivers?
14:14:35 artom Who don't necessarily keep state like libvirt does?
14:14:50 mdbooth artom: This is an internal libvirt driver detail.
14:15:10 bauzas anyway
14:15:36 bauzas I have some stupid formatting to do, because pci names are different from filesystem
14:15:47 bauzas I mean pci names in libvirt
14:15:53 bauzas grrrr
14:15:56 mdbooth bauzas: I agree that moving that stuff is less important, though.
14:16:21 mdbooth I think where we differ is much less important we think it is ;)
14:16:37 cdent "source of truth" is definitely a common issue
14:17:09 bauzas distributed systems is a NP-problem by definition
14:17:18 bauzas so I'm not afraid
14:20:13 mdbooth bauzas: The other things are bugs, anyway. This is an issue of ongoing maintainability.
14:21:15 kashyap stephenfin: Hey, have you setup DevStack lately on an older branch (Mitaka) on CentOS?
14:21:41 stephenfin kashyap: Newton is as far back I've gone in a while, I think
14:21:42 kashyap I don't see Mitaka branch in DevStack, do they "delete" the older branches?
14:21:46 stephenfin and that was before it was EOL
14:21:56 stephenfin I guess they do. Look for the mitaka-eol tag
14:22:22 kashyap stack@devstack-centos ~/src/cloud/devstack (master) $ git branch -a | grep -i mitaka
14:22:25 kashyap stack@devstack-centos ~/src/cloud/devstack (master) $ echo $?
14:22:28 kashyap 1
14:22:42 stephenfin git tag -a | grep -i mitaka
14:23:01 kashyap s/-a/-l/
14:23:25 stephenfin Indeed
14:23:26 kashyap Yep, could fetch from the tag. Thx.
14:23:35 stephenfin Once you've that checked out, you'll also want to modify the branches that are checked out, e.g. https://gist.github.com/stephenfin/d1c000f7e52ff181c4673322b28eaf47#file-local-conf-L71-L81https://gist.github.com/stephenfin/d1c000f7e52ff181c4673322b28eaf47#file-local-conf-L71-L81
14:23:46 stephenfin I guess they should all be 'mitaka-eol'
14:24:25 kashyap stephenfin: Yeah, my attempt on Fedora for Mitaka failed
14:25:07 kashyap Failed as in, the libvirt-python wonkiness: http://paste.openstack.org/show/642707/
14:25:08 stephenfin Aye, an LTS distro is probably the way to go. Guess either Ubuntu 14.04 or CentOS 7.4 is your best bet
14:25:29 kashyap It's missing two of the events, when building libvirt-python
14:25:59 kashyap Didn't wanted to duke around there, so just went w/ CentOS. Let's see how that goes.
14:27:12 kashyap stephenfin: I used to use -- https://kashyapc.fedorapeople.org/virt/openstack/Minimal-DevStack-local.conf
14:27:26 kashyap I know it could be improved (Neutron is now default, etc).
14:50:09 openstackgerrit Lee Yarwood proposed openstack/nova master: libvirt: Collocate encryptor and volume driver calls https://review.openstack.org/460243
14:50:10 openstackgerrit Lee Yarwood proposed openstack/nova master: libvirt: Introduce disk encryption config classes https://review.openstack.org/464008
14:50:10 openstackgerrit Lee Yarwood proposed openstack/nova master: WIP libvirt: QEMU native LUKS decryption for volumes https://review.openstack.org/523958
15:03:13 mriedem oops, totally forgot about the team meeting
15:03:51 mriedem gibi: thanks for running that
15:05:04 openstackgerrit sahid proposed openstack/nova master: libvirt: slow live-migration to ensure network is ready https://review.openstack.org/497457
15:05:05 gibi mriedem: no problem, I was not prepared but I could run it
15:10:30 efried Hi cores, would anyone be willing to look at the first two patches for the PowerVM integration bp? https://review.openstack.org/#/q/status:open+project:openstack/nova+branch:master+topic:bp/powervm-nova-it-compute-driver
15:11:00 efried stephenfin gibi bauzas perhaps if you have time?
15:11:43 stephenfin efried: I've been meaning to review the OVS VIF one, but I'll have to leave the storage patches to someone else
15:11:45 bauzas efried: I'm still rushing on my feature branch :/
15:11:52 bauzas efried: blame mdbooth
15:12:09 mdbooth bauzas: Sorry :P
15:12:52 bauzas mdbooth: no worries, you just owe me a beer :p
15:12:58 bauzas et voila!
15:13:16 bauzas interesting, creating a new mdev even if you have a kernel race works
15:13:25 bauzas that's awesome news
15:13:37 bauzas since the mdev is *really* created, you can ask libvirt to use it
15:13:46 bauzas even if libvirt isn't able to show it per its API
15:13:53 bauzas amazing
15:14:10 bauzas so, one big caveat isn't really a big deal and not requiring a separate change
15:14:14 bauzas just docs
15:14:22 bauzas huzzah
15:14:24 efried stephenfin Thanks, anything helps. TBH, there's not a lot of storage (or network) understanding required for these. The guts are in the pypowervm lib; these patches are really just translating the nova-ese to powervm-ese.
15:19:14 mriedem stephenfin: do you see anything obviously wrong with https://review.openstack.org/#/c/532689/ ? i ran it last night through the experimental queue but results were never posted back on the patch
15:20:05 mriedem i can see it queued up in the experimental queue in zuul right now
15:22:24 mriedem gmann: https://review.openstack.org/#/c/330406/85/nova/api/openstack/compute/migrations.py@119
15:22:32 mriedem we have 2.0 and 2.1 all over the API, it doesn't seem to make a difference
15:24:07 openstackgerrit sahid proposed openstack/nova master: hardware: only take into account small pages https://review.openstack.org/532168
15:26:57 hongbin mrodden: mlavalle : want to make a call on the full substring or partial substring debate https://review.openstack.org/#/c/521683/ ?
15:27:18 mlavalle hongbin: I will later today. Thanks for the heads up
15:29:15 gibi efried: opened the patches, but it won't fitt to my today's schedule
15:29:27 efried gibi Thanks in advance
15:30:01 mriedem hongbin: full substring
15:30:10 hongbin mlavalle: mriedem : ack
15:32:24 kashyap Does anyone know what provides this one? I'm on CentOS 7.4, and DevStack fails with:
15:32:28 kashyap $ rpm -qf `which generate-subunit`
15:32:30 kashyap file /usr/bin/generate-subunit is not owned by any package
15:32:43 kashyap (Err the failure message was: "./stack.sh: line 488: generate-subunit: command not found")
15:33:32 mriedem ask in qa
15:33:49 kashyap Yep, checking there
15:35:43 kashyap mriedem: Hehe, I found a bug with your comment (#5) -- https://bugs.launchpad.net/devstack/+bug/1547379
15:35:47 openstack Launchpad bug 1547379 in devstack "./stack.sh: line 488: generate-subunit: command not found" [Undecided,Invalid]
15:36:09 kashyap It's indeed a mistake in my local.conf!
15:36:17 mriedem exellent
15:36:20 mriedem *excellent event
15:36:21 mriedem *gdi
15:36:32 kashyap (Because I copied my F27 local.conf to the old and sloth-like CentOS)
15:40:23 openstackgerrit Eric Berglund proposed openstack/nova master: PowerVM Driver: vSCSI volume driver https://review.openstack.org/526094
15:44:14 stephenfin mriedem: I can't see anything obvious, no. I'm guessing it's just zuul funkiness
15:44:37 stephenfin There's been a lot of that this week
15:48:41 mriedem stvnoyes: ildikov: jgriffith: about 10pm last night i thought about this https://etherpad.openstack.org/p/multi-attach-volume-queens - see L48
15:48:55 mriedem stephenfin: yeah, thanks for looking. have'nt merged any patches in 2 days...
15:50:38 ildikov mriedem: does that apply to live_migrate as well?
15:51:11 openstackgerrit Eric Berglund proposed openstack/nova master: PowerVM Driver: vSCSI volume driver https://review.openstack.org/526094
15:51:14 mriedem ildikov: no

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