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#openstack-nova - 2017-04-27
15:23:33 mriedem mdbooth: god i'd love to remove all of this bdm v1 code
15:23:56 mdbooth mriedem: Hehe
15:24:03 zioproto I try with command line to force /dev/sdb
15:24:08 zioproto but it ignores me
15:24:16 mriedem zioproto: the libvirt driver ignores the device name you pass in
15:24:22 mriedem when attaching a volume, or booting from volume
15:24:30 mdbooth mriedem: How would we deprecate it?
15:24:42 lyarwood with fire?
15:24:47 zioproto but there must be a bug that assigned this /dev/hda name
15:24:52 mriedem mdbooth: i think we'd start by deprecating the legacy bdm v1 fields in the api
15:24:55 zioproto cant be both /dev/sda and /dev/hda
15:25:17 mdbooth lyarwood: Well the mechanism would be to take off and nuke it from orbit, of course. I meant the prior communication.
15:25:42 mriedem mdbooth: but that's like microversion 2.50 at this point, and unless we raise minimum microversions in the api that never goes away,
15:25:50 mriedem and even if we did, it would probably take a long time before we could remove it
15:26:11 mriedem zioproto: so the guest xml says it's /dev/sda?
15:26:19 mriedem but the bdm attachment table shows it as hda?
15:26:26 sfinucan sdague: If I want to capture logging, which fixture do I need to use?
15:26:47 mriedem zioproto: can you tell if they performed a swap volume on the instance? there should be an instance action recorded for it
15:26:58 sfinucan I saw a comment on one of mriedem's patches to not mock oslo.log, but I can't find said patch
15:27:31 mdbooth sfinucan: Interesting. I was about to say I've just mocked the log object before.
15:27:46 mriedem zioproto: actually it looks like we don't record an instance action event for swap volume
15:27:47 mriedem damn
15:28:04 zioproto I know that this volume was imported, not created with openstack
15:28:12 mriedem sfinucan: mdbooth: OutputStreamCapture i htink
15:28:14 mriedem *think
15:28:20 mriedem zioproto: imported?
15:28:22 mriedem via cinder?
15:28:23 zioproto it is some machine converted from vmware or something
15:28:30 sfinucan mriedem: ta
15:29:02 mdbooth mriedem: volume-only image?
15:29:32 openstackgerrit Matt Riedemann proposed openstack/nova master: Remove compatibility code for flavors https://review.openstack.org/460377
15:30:09 sdague sfinucan: actually, I think we buried the hook for that
15:31:00 mriedem sfinucan: i was actually curious too which fixture sdague was talking about
15:31:04 mriedem since we have a few that seem related
15:31:06 sdague nova_fixtures.StandardLogging() would give us a fixture with self.logger that we can pull on
15:31:16 sdague but we didn't assign a reference to get back to it
15:31:48 mriedem so the base test case needs to store self.logger = self.useFixture(nova_fixtures.StandardLogging()).logger?
15:31:50 mriedem right?
15:32:04 mriedem and then i can do self.assertIn('foo', self.logger.info)?
15:32:23 johnthetubaguy mriedem: dansmith: was the ping I missed about the duplicate hostnames thing in os-services? I think I was really asking about FQDN vs hostname. There wouldn't be duplicate FQDNs.
15:32:33 mriedem oh self.logger.output
15:32:50 openstackgerrit Sean Dague proposed openstack/nova master: Expose StandardLogging fixture for use https://review.openstack.org/460642
15:32:50 dansmith johnthetubaguy: okay, when do we use hostnames that aren't fqdns?
15:32:57 dansmith johnthetubaguy: not for service registration, AFAIK
15:33:04 sdague mriedem: or that ^^^
15:33:30 johnthetubaguy dansmith: oh, I thought we default to hostname rather than fqdn, that might just be me getting all mixed up
15:33:41 sdague mriedem: I thought it had gotten exposed
15:33:41 dansmith johnthetubaguy: not that I've ver seen
15:34:01 sdague but apparently not, but there is a whole mechanism for it being captured, so we should us that instead of mocks
15:34:03 zioproto mriedem: so it was two disks from vmware. We converted this disks to glance images, and then to cinder volumes.
15:34:15 johnthetubaguy dansmith: ok, thats probably just my confusion then, seems fine to assume no duplicate fqdn's
15:34:41 openstackgerrit Samantha Blanco proposed openstack/nova master: Remove flavor-rxtx policy https://review.openstack.org/444036
15:34:57 dansmith johnthetubaguy: ack
15:35:32 mriedem zioproto: ok, the device name won't be stored in the cinder volumes anyway, only the mountpoint meta in cinder, but that's set by nova when the volume is attached
15:36:05 mriedem on a complete tangent, it seems like we should be recording instance actions for swap volume, since that's a thing that happens mostly out of band from a nova api pov
15:36:11 mriedem since cinder initiates it via retype
15:38:15 mriedem dansmith: btw, https://review.openstack.org/460377 turned out to be kind of a beast
15:38:34 dansmith sweet
15:38:39 johnthetubaguy dansmith: so we don't really use the fqdn in here: https://github.com/openstack/nova/blob/master/nova/conf/netconf.py#L55 although I could be reading the docs wrongly: https://docs.python.org/2/library/socket.html#socket.gethostname
15:39:06 dansmith johnthetubaguy: but that's for things like telling other computes how to contact us
15:39:12 dansmith johnthetubaguy: not related to service identity, AFAIK
15:39:28 johnthetubaguy dansmith: we use the conf to register the service though, I thought
15:39:32 dansmith oh, host
15:39:47 dansmith sorry, I was reading the lines wrong, and thought you were talking about the storage_ip
15:39:55 johnthetubaguy dansmith: ah, doh
15:40:13 dansmith johnthetubaguy: so, yeah I guess they could configure it to be wrong
15:40:16 mdbooth zioproto: Assuming that the instance in question was created (from Nova's pov) from an image, does if have hw_architecture defined?
15:40:29 mdbooth zioproto: Is it a 32bit arch by any chance?
15:40:33 dansmith johnthetubaguy: but again, if they have dupes, we'll fail consistency checks AFAIK
15:40:56 johnthetubaguy dansmith: well, not in cells v1, its a different DB, I think
15:41:05 dansmith johnthetubaguy: but it's all merged at the top
15:41:11 dansmith johnthetubaguy: https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/models.py#L81-L84
15:41:28 dansmith johnthetubaguy: you'll still end up with all the services up there, right? else none of those APIs will work
15:41:31 johnthetubaguy dansmith: good point, it must be like that today
15:41:43 zioproto mdbooth: <type arch='x86_64' machine='pc-i440fx-xenial'>hvm</type>
15:41:51 johnthetubaguy dansmith: seems we are covered either way then, cool
15:42:04 mdbooth zioproto: I mean does the glance image have a hw_architecture image property?
15:42:18 dansmith johnthetubaguy: just like getting rid of these ambiguous id-using apis, if we have people with dupes here, we might as well flush them out :)
15:42:23 zioproto So I tried booting with only 1 volume attached, and the attach the second volume later. But I get libvirtError: Operation not supported: disk bus 'ide' cannot be hotplugged.
15:42:59 johnthetubaguy dansmith: seems a good opportunity, it can only be creating strange subtable bugs in other places
15:43:08 dansmith johnthetubaguy: if even possible, yeah
15:43:39 zioproto mdbooth: no, but now I see it has hw_disk_bus='ide'
15:43:44 zioproto so maybe hda comes from there
15:43:45 mdbooth boom!
15:44:25 zioproto but the volume created from that image does not have this property
15:44:29 zioproto at least I cant find it
15:44:48 openstackgerrit Rick Bartra proposed openstack/nova master: Add policy granularity to the Flavors API https://review.openstack.org/449288
15:45:14 mdbooth zioproto: It's looking at the glance image
15:45:36 zioproto can I remove the property from the glance image ?
15:45:47 mdbooth Actually, no. It's looking at the glance image metadata, which will have been stored invisibly with the volume.
15:46:19 zioproto mdbooth: in the cinder database ?
15:46:28 mdbooth Yes
15:46:46 mdbooth I don't think anything exposes it, though
15:46:50 mdbooth But I could be wrong
15:47:50 mriedem yeah the glance image meta is stored all over the place...
15:48:11 mdbooth So that's why it's ide
15:48:17 openstackgerrit Balazs Gibizer proposed openstack/nova master: Remove **kwargs passing in payload __init__ https://review.openstack.org/418489
15:48:19 mdbooth Why does it fail to boot?
15:48:23 mriedem and when you snapshot a server with volumes attached, the bdm meta goes into the image snapshot meta
15:49:16 zioproto cant find this ide metadata doing select * from volume_glance_metadata where volume_id=uuid

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