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#openstack-nova - 2018-03-27
15:45:46 mriedem but that there were also old entries?
15:46:13 mriedem SamYaple: also, this sounds vaguely familiar to https://review.openstack.org/#/c/556670/
15:46:18 gibi jaypipes: I understand that it is a long spec and this part of it seems minor
15:46:20 mlavalle jaypipes, gibi: I am planning to go over the spec today
15:46:52 openstackgerrit Stephen Finucane proposed openstack/nova master: tox: Speed things up and document them https://review.openstack.org/534382
15:46:52 openstackgerrit Stephen Finucane proposed openstack/nova master: trivial: Remove 'tools/releasenotes_tox.sh' https://review.openstack.org/534383
15:46:52 openstackgerrit Stephen Finucane proposed openstack/nova master: tox: Make everything work with Python 3 https://review.openstack.org/556894
15:46:56 jaypipes bauzas: the scheduler simply does a ComputeNode.get_all_by_uuid(), passing all the UUIDs of all providers it sees in the provider_summaries section of the allocation_candidates response. Nothing about that will be changing.
15:47:11 mlavalle I also have the impression that we can / should simplify a bit, jaypipes
15:47:15 mriedem SamYaple: at this point, if not CONF.cells.enable and we're in here https://github.com/openstack/nova/blob/ed55dcad83d5db2fa7e43fc3d5465df1550b554c/nova/compute/api.py#L2268 we likely should be puking out a warning
15:47:16 jaypipes gibi: no, it's not the length of the spec that I have issues with.
15:47:18 bauzas jaypipes: sec
15:47:29 jaypipes mlavalle: it's the crossing of scope boundaries that I have issue with.
15:47:35 SamYaple mriedem: http://paste.openstack.org/show/715421/
15:47:40 gibi mlavalle: cool, then could you please add your view about the backend selection in https://review.openstack.org/#/c/502306/21/specs/rocky/approved/bandwidth-resource-provider.rst@610
15:48:00 SamYaple the first three services inthat list were the originals. i deleted them and everything started working
15:48:08 bauzas jaypipes: say some child RP is accepting the query, the placement API call to allocation_candidates will return the root RP UUIDs in the provider_summaries ?
15:48:28 bauzas jaypipes: is that already the case or is that requiring some implementation change ?
15:48:35 jaypipes gibi: the thing we are attempting to consume is a chunk of network (ingress or egress) bandwidth for a physical network. I don't really see how vNIC type nor network "backend" selection is relevant to that.
15:48:37 bauzas because I want to understand what's missing
15:48:38 gibi mlavalle: if we want to have what is described in that subsection then we have to convince jaypipes to have backend specific traits in the RP tree
15:48:53 jaypipes bauzas: yes. and it already does that.
15:48:57 SamYaple mriedem: with the old services not deleted, GETs on instances (nova show's) would fail
15:48:58 bauzas \o/
15:49:12 bauzas I was out of nested RPs for a while
15:49:13 mriedem SamYaple: ok so before this, the api code just relied on getting the instances from the nova db configured in your nova-api nova.conf [database]/connection field right?
15:49:20 gibi jaypipes: by claiming bandwidth we implicitly select the backend, that is why backend comes into the picture
15:49:20 bauzas but that's a very nice point
15:49:41 mriedem SamYaple: oh are you saying the new 15-level services are fixing the problem for you then?
15:49:53 mriedem but you didn't know about those until you had figured out the problem with the older service versions
15:49:59 SamYaple yes
15:50:02 mriedem ok
15:50:26 jaypipes gibi: but why should the nova scheduler care about that? shouldn't the nova scheduler just claim resources against the provider of network bandwidth for a specific physical network and then leave it to os-vif and the compute node to pick whatever network backend it wants?
15:50:28 gibi jaypipes: we failed to find a RP model that allows claiming bandwidth but not selecting a specific backend that bandwidth belongs to
15:50:45 mriedem SamYaple: did you just upgrade to newton? or ocata/pike?
15:51:22 SamYaple mriedem: newton -> ocata
15:51:40 mriedem ok and now you have a cell1 mapping for the nova db
15:51:47 SamYaple oh yea its all working now
15:51:49 mriedem so you're pulling instances from https://github.com/openstack/nova/blob/ed55dcad83d5db2fa7e43fc3d5465df1550b554c/nova/compute/api.py#L2271
15:51:59 mriedem ok
15:52:26 mriedem at this point i'm not sure what the nova-status version check would look for, nova-osapi_compute services with version < 15 across all cells?
15:52:32 mriedem and then backport that to queens, pike and ocata?
15:52:40 SamYaple mriedem: i think so
15:52:40 gibi jaypipes: could be a problem with our model
15:52:51 SamYaple there are no logs indicating any issues
15:53:04 SamYaple mriedem: i had to walk to code and db (which im not super familiar with) to findthis
15:53:11 mriedem SamYaple: yeah like i said at this point that should be a warning, but a warning in rocky doesn't help you in ocata
15:53:22 mriedem SamYaple: can you report a bug and i can bring it up in the cells meeting?
15:53:29 SamYaple im looking to the future :)
15:53:32 SamYaple sure will do
15:53:47 mriedem whatever we do can at least help the next poor soul that runs into this
15:53:52 SamYaple exactly
15:53:55 mriedem thanks
15:54:43 SamYaple nova uses launchpad still, right?
15:54:51 mriedem hell yeah
15:55:02 SamYaple :)
15:55:41 Spaz-Home Trade me plz.
15:56:02 jaypipes gibi, mlavalle: please move convo to https://etherpad.openstack.org/p/X0RboWOe7C
15:56:08 gibi jaypipes: ack
16:05:03 SamYaple mriedem: https://bugs.launchpad.net/nova/+bug/1759316
16:05:03 openstack Launchpad bug 1759316 in OpenStack Compute (nova) "pre-cells_v2 nova-osapi_compute service in database breaks instance lookup" [Undecided,New]
16:06:24 jaypipes mlavalle: are you light green on etherpad?
16:06:30 openstackgerrit Surya Seetharaman proposed openstack/nova master: Scheduling Optimization: Remove cell0 from the list of candidates https://review.openstack.org/556821
16:06:31 openstackgerrit Surya Seetharaman proposed openstack/nova master: Allow scheduling only to enabled cells (Filter Scheduler) https://review.openstack.org/550527
16:06:31 openstackgerrit Surya Seetharaman proposed openstack/nova master: Add --enable and --disable options to nova-manage update_cell https://review.openstack.org/555416
16:06:32 openstackgerrit Surya Seetharaman proposed openstack/nova master: Update the cells FAQs and scheduler maintenance docs. https://review.openstack.org/556459
16:06:44 mlavalle jaypipes: I am green
16:07:03 jaypipes mlavalle: cool, thx :)
16:08:42 sahid gibi: i responded to your comments on the emulthreads spec, if you can let me know your rhinking on how to handle that specific point
16:11:34 kashyap mriedem: Just to note, after last 30 mins of looking around, I've updated min versions for libvirt / QEMU / libguestfs for Debian, Fedora and RHEL: https://wiki.openstack.org/wiki/LibvirtDistroSupportMatrix#Distro_minimum_versions
16:11:38 mriedem SamYaple: ack
16:12:29 kashyap Once I do for openSUSE & SLES, then it gives a somewhat representative sample to update the code & remove backward compat cruft.
16:12:39 mriedem kashyap: ok. you could maybe get imacdonn or stvnoyes1 to help out with the oracle linux entry, and AJaeger or toabctl to help out with suse
16:13:12 mriedem kashyap: well, the proposed 'next' version is generally communicated on the ops mailing list for feedback
16:13:18 kashyap Thanks; I was just looking up things myself for the past bit. And for Debian at least I got double-checked w/ a Debian person
16:13:31 kashyap mriedem: Yes, that too, how could I forget that :-)
16:13:44 kashyap (I myself added a note about mail to Operators in the wiki. Won't miss that.)
16:13:53 kashyap s/Wiki/PTG Etherpad/
16:16:47 sahid btw mriedem or perhaps dansmith, i know that your are not so interested about the emulator threads things but if one of you can have a look at https://review.openstack.org/#/c/511188/
16:17:51 sahid jay pipes looks to be also the one to review it but at some point i will need to have an other core
16:18:06 openstackgerrit Artom Lifshitz proposed openstack/nova-specs master: NUMA-aware live migration https://review.openstack.org/552722
16:19:03 sahid thanks in advance
16:19:19 mriedem sahid: that is wayyyy outside of my wheelhouse
16:20:08 bauzas mriedem: mmmm, we approved https://blueprints.launchpad.net/nova/+spec/vgpu-rocky but I discussed with jaypipes about how we would support multiple VGPU types by using a new conf opt and we agreed to provide a spec for that
16:20:16 bauzas mriedem: fine if I'm still using that blueprint ?
16:20:24 mriedem bauzas: ask melwitt
16:20:30 sahid yes yes no worries
16:20:32 bauzas melwitt: arouuuuund ?
16:20:41 toabctl kashyap, mriedem the (open)SUSE entries seems to be ok. the upcoming versions are not yet there but SLES12SP3 is the version that we need support for imo
16:21:13 mriedem toabctl: as the next min version you mean?
16:21:16 bauzas sahid: https://review.openstack.org/#/c/511188/ is on my list
16:21:19 mriedem for rocky, we already have the next min versions in plae
16:21:21 mriedem *plcae
16:21:23 mriedem damn it
16:21:27 bauzas place FTW
16:21:40 sahid bauzas: ah cool, thanks
16:21:45 mriedem https://github.com/openstack/nova/blob/ed55dcad83d5db2fa7e43fc3d5465df1550b554c/nova/virt/libvirt/driver.py#L207
16:21:47 mriedem toabctl: ^
16:22:41 mriedem kashyap: andreas_s is the person to ask for zkvm
16:22:52 toabctl mriedem, I'm saying the versions are up-to-date. so Rocky seems to be fine

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