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#openstack-nova - 2017-10-10
21:18:53 cdent i’ll leave a comment-to-self
21:19:09 coreycb mriedem: search for 'cell1'
21:20:27 mriedem coreycb: Table 'nova.compute_nodes' doesn't exist
21:20:40 mriedem you can't run discover_hosts or map_instances unti you've synced the dbs on the cells
21:20:55 mriedem meaning, you need to run nova-manage db sync on each cell database
21:21:27 mriedem https://docs.openstack.org/nova/pike/user/cells.html#setup-of-cells-v2
21:22:09 mriedem "At this point, the API database can now find the cell database, and further commands will attempt to look inside. If this is a completely fresh database (such as if you’re adding a cell, or if this is a new deployment), then you will need to run nova-manage db sync on it to initialize the schema."
21:22:16 coreycb mriedem: i think we do that, we basically follow the order of what's in doc/source/cells.rst
21:22:35 coreycb mriedem: it's just a small window and then you'll see at the end of that output discover_hosts works.
21:23:37 mriedem coreycb: so there is a separate process that's calling create_cell and doing the db sync on each cell?
21:28:31 coreycb mriedem: no it's same process, but we don't target the cell on the db sync if that's possible
21:29:15 mriedem nova-manage db sync will sync the current cell db (so cell1 if you're running it on a nova.conf with [database] configured for cell1) and it will query the nova_api database looking for cell0 and sync that as well
21:29:30 mriedem that has to happen before you start discovering hosts in cell1
21:30:53 coreycb mriedem: ok. yes we're doing that. basically we do steps 1-6 of the document you linked, and then if i run list_cells and discover_hosts in a loop, there will be a window (i've not timed it, maybe 30 seconds?) where list_cells returns 'cell1' but discover_hosts fails. then after eventually discover_hosts works.
21:31:27 coreycb mriedem: just curious really if that's normal behavior
21:33:26 openstackgerrit OpenStack Proposal Bot proposed openstack/nova master: Updated from global requirements https://review.openstack.org/511021
21:33:33 mriedem well i can tell from that dump that you're trying to discover_hosts before cell1 db schema is fully sync'ed
21:33:45 mriedem because
21:33:45 mriedem ProgrammingError: (pymysql.err.ProgrammingError) (1146, u"Table 'nova.compute_nodes' doesn't exist")
21:34:21 coreycb mriedem: right. my impression from that is that nova-manage commands aren't necessarily finished when they return. but i'm guessing.
21:34:59 mriedem db sync is synchronoous
21:35:36 openstackgerrit OpenStack Proposal Bot proposed openstack/os-vif master: Updated from global requirements https://review.openstack.org/511035
21:36:38 coreycb mriedem: ok that's good to know. if that's the case it must be something on my end then.
21:36:54 coreycb mriedem: thanks
21:36:59 mriedem np
21:38:41 rm_work hey, when an instance is live-migrated, does nova update the AZ in the database / api response?
21:39:11 rm_work I *assume* yes, but it's one of those things I'd just like to be sure of
21:44:02 mriedem dansmith: remind me, new style migration allocation things, the dest node allocation is held by the instance, and the source node allocation is held by the migration, correct?
21:44:12 dansmith yes
21:44:25 openstackgerrit Jackie Truong proposed openstack/python-novaclient master: Microversion 2.54 - Add trusted_image_certificates https://review.openstack.org/500396
22:08:38 mriedem dansmith: ok comments in https://review.openstack.org/#/c/498949/
22:34:41 openstackgerrit Merged openstack/nova master: Transform aggregate.remove_host notification https://review.openstack.org/396211
23:07:04 openstackgerrit Hongbin Lu proposed openstack/nova master: [WIP] Handle not found error on taking snapshot https://review.openstack.org/511074
23:09:12 openstackgerrit Hongbin Lu proposed openstack/nova master: [WIP] Handle not found error on taking snapshot https://review.openstack.org/511074
23:09:13 openstackgerrit Merged openstack/nova master: Ensure instance can migrate when launched concurrently https://review.openstack.org/506093
#openstack-nova - 2017-10-11
00:27:08 openstackgerrit OpenStack Proposal Bot proposed openstack/os-vif stable/pike: Updated from global requirements https://review.openstack.org/493146
00:39:53 openstackgerrit OpenStack Proposal Bot proposed openstack/os-vif stable/pike: Updated from global requirements https://review.openstack.org/493146
00:52:42 openstackgerrit OpenStack Proposal Bot proposed openstack/os-vif stable/pike: Updated from global requirements https://review.openstack.org/493146
01:12:40 Kevin_Zheng mriedem, hi, for https://review.openstack.org/#/c/509326/
01:16:26 Kevin_Zheng I responded some comment, as for the neutron part, I submitted a RFE and seems Amando is fine with it and they will discuss it at the driver meeting this friday: https://bugs.launchpad.net/neutron/+bug/1718605, how should I put it in the spec?
01:16:27 openstack Launchpad bug 1718605 in neutron "[RFE] Support regex matching when filtering port with IP address" [Wishlist,Triaged] - Assigned to Zhenyu Zheng (zhengzhenyu)
01:17:38 openstackgerrit Jay Pipes proposed openstack/nova master: placement: integrate ProviderTree to report client https://review.openstack.org/415921
01:17:38 openstackgerrit Jay Pipes proposed openstack/nova master: placement: add nested resource providers https://review.openstack.org/377138
01:17:39 openstackgerrit Jay Pipes proposed openstack/nova master: placement: allow filter providers in tree https://review.openstack.org/377215
01:17:39 openstackgerrit Jay Pipes proposed openstack/nova master: placement: adds REST API for nested providers https://review.openstack.org/384807
01:17:40 openstackgerrit Jay Pipes proposed openstack/nova master: placement: update client to set parent provider https://review.openstack.org/385693
02:32:41 openstackgerrit Merged openstack/nova master: Fix minor input items from previous patches https://review.openstack.org/506416
03:39:07 openstackgerrit OpenStack Proposal Bot proposed openstack/nova master: Updated from global requirements https://review.openstack.org/511021
03:41:11 openstackgerrit OpenStack Proposal Bot proposed openstack/os-vif master: Updated from global requirements https://review.openstack.org/511035
05:50:02 openstackgerrit OpenStack Proposal Bot proposed openstack/nova master: Updated from global requirements https://review.openstack.org/511021
05:52:13 openstackgerrit OpenStack Proposal Bot proposed openstack/os-vif master: Updated from global requirements https://review.openstack.org/511035
06:53:48 openstackgerrit Elod Illes proposed openstack/nova master: WIP: Transform scheduler.select_destinations notification https://review.openstack.org/508506
07:22:24 openstackgerrit Elod Illes proposed openstack/nova master: WIP: Transform scheduler.select_destinations notification https://review.openstack.org/508506
07:30:51 openstackgerrit Merged openstack/nova master: Target context for build notification in conductor https://review.openstack.org/509967
08:28:13 openstackgerrit Surya Seetharaman proposed openstack/nova master: nova-manage map_instances is not using the cells info from the API database https://review.openstack.org/510844
08:33:41 openstackgerrit Huan Xie proposed openstack/nova master: [WIP] VGPU: Define vgpu related resources https://review.openstack.org/511180
08:36:08 openstackgerrit Huan Xie proposed openstack/nova master: [WIP] VGPU: Define vgpu related resources https://review.openstack.org/511180
08:41:39 openstackgerrit Huan Xie proposed openstack/nova master: [WIP] VGPU: Define vgpu related resources https://review.openstack.org/511180
08:41:50 openstackgerrit sahid proposed openstack/nova master: libvirt: set emulator threads on isolated host cpus https://review.openstack.org/510897
08:45:08 openstackgerrit Huan Xie proposed openstack/nova master: [WIP] VGPU: Define vgpu related resources https://review.openstack.org/511180
08:49:54 kashyap mdbooth: Hi there, when you get a moment:
08:50:06 mdbooth kashyap: Wassup?
08:50:30 kashyap mdbooth: Do you recall top off your head, if Nova sets any QEMU migration parameters? Or do we just rely on libvirt? Let me give an example of what I mean
08:51:28 kashyap Take a look at the ouput of this command: virsh qemu-monitor-command f26-devstack --pretty '{"execute":"query-migrate-parameters"}'
08:51:32 kashyap http://paste.openstack.org/show/623292/
08:52:29 stephenfin kashyap: to the best of my knowledge, if it can't be done via libvirt then we don't do it
08:52:56 mdbooth kashyap: nova never talks to qemu directly if that's what you mean?
08:53:00 kashyap stephenfin: Yep. I know we don't "do direct QEMU", that's the whole frelling point of explicitly modelling in libvirt XML aspects
08:53:14 mdbooth In fact, I don't think qemu allows more than one monitor, does it?
08:53:18 mdbooth i.e. it's not even possible
08:54:14 kashyap mdbooth: I know Nova never talks to QEMU
08:54:22 kashyap mdbooth: And QEMU does allow more than one monitor.
08:54:45 mdbooth kashyap: I didn't understand the question, then
08:54:57 kashyap mdbooth: Let me give a bit more context:
08:55:06 mdbooth Nova does set some of those values explicitly, via libvirt
08:55:28 kashyap mdbooth: What made me ask the question is, one of the QEMU migration devs asked me this morning what migration parameters Nova uses
08:56:27 kashyap mdbooth: You (libvirt could) set migration parameters via `migrate-set-parameters` QMP command, _except_ this "xbzrle-cache-size"
08:56:49 kashyap And they were wondering does Nova use it in anyway. So I went digging...
08:57:15 mdbooth Yes, absolutely. Nova tweaks a bunch of those.
09:00:38 kashyap mdbooth: Meanwhile, here's an example for multiple monitors:
09:00:42 kashyap $ qemu-system-x86_64 [...] -monitor stdio -qmp unix:./qmp-sock,server,nowait
09:01:00 kashyap HMP (Human Monitor Protocol) on 'stdio', and QMP on a UNIX socket.
09:06:19 openstackgerrit Andrey Volkov proposed openstack/osc-placement master: [WIP] CLI for resource classes https://review.openstack.org/511182
09:06:19 openstackgerrit Andrey Volkov proposed openstack/osc-placement master: [WIP] RP list: member_of and resources parameters https://review.openstack.org/511183
09:06:49 openstackgerrit Alex Xu proposed openstack/nova master: [DNM] Add _get_provider_ids_with_any_trait https://review.openstack.org/511184
09:06:49 openstackgerrit Alex Xu proposed openstack/nova master: [DNM] placement: add traits support in the AllocationCandidates object https://review.openstack.org/511185
09:12:14 openstackgerrit sahid proposed openstack/nova-specs master: update: introducing isolate emulthreads on host https://review.openstack.org/511188
09:42:53 openstackgerrit jichenjc proposed openstack/nova master: Remove duplicate error info https://review.openstack.org/510719
09:44:03 openstackgerrit Takashi NATSUME proposed openstack/nova master: Enable cold migration with target host(1/2) https://review.openstack.org/408955
09:48:00 openstackgerrit Takashi NATSUME proposed openstack/nova master: Enable cold migration with target host(1/2) https://review.openstack.org/408955
09:48:59 openstackgerrit Takashi NATSUME proposed openstack/nova master: Enable cold migration with target host(2/2) https://review.openstack.org/408964
09:59:20 openstackgerrit Hironori Shiina proposed openstack/nova master: ironic: Support resize and cold migration https://review.openstack.org/500677
09:59:58 openstackgerrit jichenjc proposed openstack/nova master: Remove duplicate error info https://review.openstack.org/510719
10:00:50 openstackgerrit Takashi NATSUME proposed openstack/nova master: List/show all server migration types (1/2) https://review.openstack.org/430608
10:06:42 lyarwood mdbooth: so the stable rescue spec LGTM. I've been umming and ahhing about the sync vs async failure paths for a while, the only alternative I can see is making the rescue_instance rpc cast a call but that's a horrid change.
10:07:13 mdbooth lyarwood: On a call. Sync up in a bit.
10:10:55 openstackgerrit Takashi NATSUME proposed openstack/nova master: List/show all server migration types (1/2) https://review.openstack.org/430608
10:12:54 openstackgerrit Andrey Volkov proposed openstack/nova master: AZ operations: check host has no instances https://review.openstack.org/509206
10:59:56 openstackgerrit Takashi NATSUME proposed openstack/nova master: List/show all server migration types (2/2) https://review.openstack.org/459483
11:01:42 openstackgerrit Takashi NATSUME proposed openstack/python-novaclient master: Microversion 2.54 - List/Show all server migration types https://review.openstack.org/430839

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