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| hemna | patrickeast, ping | 00:11 |
|---|---|---|
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| patrickeast | hemna: pong | 00:18 |
| hemna | patrickeast, was looking at this one https://review.openstack.org/#/c/214825/ | 00:18 |
| hemna | but I don't see pure CI reporting :( | 00:18 |
| hemna | otherwise I'd shove it in | 00:18 |
| patrickeast | Yah Im fixing the ci now | 00:19 |
| hemna | ok | 00:19 |
| hemna | didn't mean to pester you on it | 00:19 |
| hemna | patrickeast, https://review.openstack.org/#/c/236143/ when you have time? :) | 00:20 |
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| patrickeast | hemna: will do :D | 00:26 |
| hemna | patrickeast, thanks | 00:27 |
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| openstackgerrit | Alex O'Rourke proposed openstack/cinder: 3PAR: Create consistency group from source CG https://review.openstack.org/274908 | 00:35 |
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| openstackgerrit | abhiram moturi proposed openstack/cinder: Zfssaiscsi: Implement replication v2 https://review.openstack.org/274954 | 01:00 |
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| openstackgerrit | Alex Meade proposed openstack/cinder-specs: User facing error messages https://review.openstack.org/274958 | 01:13 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Fix service-list filter https://review.openstack.org/263257 | 02:22 |
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| sheel | ameade: hi there | 05:52 |
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| openstackgerrit | Merged openstack/cinder: Improve logging for volume detach https://review.openstack.org/274630 | 06:25 |
| bkumar | https://bugs.launchpad.net/cinder/+bug/1540761 | 06:25 |
| openstack | Launchpad bug 1540761 in Cinder "Image Volume Cache Feature is failing in master branch" [Undecided,New] | 06:25 |
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| bkumar | is anyone facing the same problem? | 06:28 |
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| patrickeast | bkumar: i haven't seen it, but also haven't tested the image cache with lvm in a while | 06:34 |
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| bkumar | @<patrickeast> i removed some line of code in the program , after that im seeing 3 copies of the cached image | 06:40 |
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| patrickeast | bkumar: uh, which lines did you remove? | 06:40 |
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| bkumar | line number 552 in /opt/stack/cinder/cinder/brick/local_dev/lvm.py | 06:47 |
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| bkumar | this line : | 06:48 |
| bkumar | #try: | 06:48 |
| bkumar | # self._execute(*cmd, | 06:48 |
| bkumar | # root_helper=self._root_helper, | 06:48 |
| bkumar | # run_as_root=True) | 06:48 |
| bkumar | #except putils.ProcessExecutionError as err: | 06:48 |
| bkumar | # LOG.exception(_LE('Error creating Volume')) | 06:48 |
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| bkumar | # LOG.error(_LE('Cmd :%s'), err.cmd) | 06:48 |
| bkumar | # LOG.error(_LE('StdOut :%s'), err.stdout) | 06:48 |
| bkumar | # LOG.error(_LE('StdErr :%s'), err.stderr) | 06:48 |
| bkumar | # LOG.error(_LE('Error is from here')) | 06:48 |
| bkumar | # raise | 06:48 |
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| bkumar | patrickeast : the error was Logical volume is already exists , and after commenting the exception im getting 3 copies of image , Somehow it is creating 3 copies which is throwing the error | 06:54 |
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| lixiaoy1 | DuncanT: Hi Duncan, may I ask you review https://review.openstack.org/#/c/262395/? Chinese Spring festival is comming soon, and I will take vacation. Hope you review it earlier? | 06:58 |
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| avishay | alonma: Hey. To connect to XIV properly, do I need to install the host tools? | 07:17 |
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| openstackgerrit | wuyuting proposed openstack/cinder: Add index for reservations on (deleted, uuid) https://review.openstack.org/275047 | 07:34 |
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| openstackgerrit | LisaLi proposed openstack/cinder: Update quota when volume type renames. https://review.openstack.org/267999 | 07:44 |
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| openstackgerrit | wanghao proposed openstack/cinder: Uploading volume to specific image https://review.openstack.org/270073 | 07:49 |
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| patrickeast | bkumar: i just tested the image cache with lvm and pure backends and had no issues on the latest master | 08:00 |
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| patrickeast | bkumar: whats the sha id for the revision you are seeing the problem on? | 08:01 |
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| openstackgerrit | wanghao proposed openstack/cinder-specs: Uploading volume to specific image https://review.openstack.org/258310 | 09:00 |
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| openstackgerrit | Sheel Rana proposed openstack/python-cinderclient: is_public=N/A in output of cinder type-update https://review.openstack.org/274429 | 09:05 |
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| openstackgerrit | Jordan Pittier proposed openstack/cinder: Workaround for python-novaclient not supporting Keystone v3 https://review.openstack.org/274790 | 09:25 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Fix service-list filter https://review.openstack.org/263257 | 09:43 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Add description when rename LUN in Huawei driver https://review.openstack.org/271603 | 09:57 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Huawei: Don't fail when port group does not exist https://review.openstack.org/271599 | 10:01 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Add description when rename LUN in Huawei driver https://review.openstack.org/271603 | 10:03 |
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| sheel | Hello All, please find some time to review https://review.openstack.org/#/c/274429/ | 10:14 |
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| openstackgerrit | abhiram moturi proposed openstack/cinder: Zfssaiscsi: Implement replication v2 https://review.openstack.org/274954 | 13:15 |
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| openstackgerrit | Matan Sabag proposed openstack/cinder: Support for consistency groups in ScaleIO driver https://review.openstack.org/269624 | 13:16 |
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| openstackgerrit | Gyorgy Szombathelyi proposed openstack/cinder: Support https keystone in volume quotas https://review.openstack.org/272437 | 14:18 |
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| sheel | DuncanT: Hi | 14:31 |
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| sheel | DuncanT: are you there? | 14:32 |
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| sheel | smcginnis: Hi there | 14:33 |
| scottda | dulek: Hi | 14:34 |
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| scottda | dulek: I'm looking at https://bugs.launchpad.net/cinder/+bug/1518513 and seeing it on our stable/liberty based branch | 14:34 |
| openstack | Launchpad bug 1518513 in Cinder "Quota update call fails in Liberty" [Medium,In progress] - Assigned to Dan Nguyen (daniel-a-nguyen) | 14:34 |
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| scottda | dulek: I'm curious if your repro was stable/liberty for both Cinder and Keystone? | 14:36 |
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| smcginnis | sheel: Hey, here now. | 14:40 |
| yuriy_n17 | geguileo: Sorry for disturbing. Please review https://review.openstack.org/#/c/263257/ whenever you find free time. Thanks a lot for advance. | 14:40 |
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| sheel | smcginnis: you always use to be there for all calls.. really great lead.. | 14:41 |
| amoturi | Hi what is the latest for replication? i sent out a patch yesterday(https://review.openstack.org/#/c/274954/) But it seems there is another implementation. | 14:42 |
| smcginnis | sheel: Hah, thanks. | 14:42 |
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| sheel | smcginnis: thanks to you.. | 14:43 |
| sheel | smcginnis: actually I wanted your some time for review on "https://review.openstack.org/#/c/274429/" | 14:43 |
| smcginnis | amoturi: Yeah, I need to apologize for that. At the midcycle we had a lot of discussion on replication. | 14:43 |
| smcginnis | amoturi: We decided to change course before it's too late. | 14:43 |
| smcginnis | amoturi: And simplify things first. | 14:43 |
| sheel | and https://review.openstack.org/#/c/272229/ | 14:43 |
| smcginnis | amoturi: So I think what you have now probably won't need to change too much. | 14:43 |
| smcginnis | amoturi: But there will be some change. | 14:44 |
| smcginnis | sheel: Got it, open in a tab now, so I'll try to get to reviewing it a little later. Just need to catch up on some things first. | 14:44 |
| sheel | smcginnis: sure, please take your time... | 14:44 |
| smcginnis | amoturi: jgriffith_away is working on some updates. | 14:44 |
| amoturi | smcginnis: Sure. i wouldn't mind making changes to make it simpler. But i see that the blueprint for the new implementation was just approved 4 days ago. when i can expect it to go in? | 14:45 |
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| smcginnis | amoturi: I plan on bringing it up in tomorrow's meeting if you are around to help spread the word and awareness that things are changing. | 14:45 |
| amoturi | smcginnis: also since the deadline is march 19th (i think?) can my patch make it by then? | 14:45 |
| smcginnis | amoturi: I know he is working on some code right now. Hopefully this week. | 14:45 |
| smcginnis | amoturi: Yes, I think you should have enough time. You'll have support from the other vendors that need to re-reimplement replication. ;)\ | 14:46 |
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| amoturi | smcginnis: nope i was wrong mitaka 3 is march 1st. Ok perfect. | 14:47 |
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| amoturi | smcginnis: and since i can help review theirs if they review mine :) | 14:47 |
| smcginnis | amoturi: Yeah, we'll have to work together on this one. I don't want anyone left behind because of this. | 14:49 |
| amoturi | smcginnis: great. thanks for the support. I'll attend tomorrow's meeting as well | 14:50 |
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| mtanino | geguileo: hello, | 15:28 |
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| mtanino | geguileo: Can we continue to discuss LIO target problem fix? https://review.openstack.org/#/c/271424/ | 15:29 |
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| geguileo | mtanino: This week I'm in a training | 15:29 |
| mtanino | geguileo: Ah, ok. see you next week :) | 15:30 |
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| mc_nair | DuncanT: can you send a link to the approach you mentioned at the midcycle where a user's encryption key was getting passed with every attach/detach call as part of the header so Cinder wouldn't need to manage it (Google had prototyped it)? | 15:46 |
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| openstackgerrit | Alex Meade proposed openstack/cinder-specs: User facing error messages https://review.openstack.org/274958 | 15:46 |
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| sheel | ameade:hi | 15:50 |
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| sheel | ameade: please let me know when can we discuss about midcycle points for asynchronous error messages? | 15:51 |
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| openstackgerrit | Mitsuhiro Tanino proposed openstack/cinder: Permit volume type operations for policy authorized users https://review.openstack.org/274204 | 16:31 |
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| openstackgerrit | Walter A. Boring IV (hemna) proposed openstack/cinder: Revert "Allow host and instance_uuid at attach" https://review.openstack.org/275316 | 16:40 |
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| openstackgerrit | Scott DAngelo proposed openstack/cinder: cinder-api-microversions code https://review.openstack.org/224910 | 18:03 |
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| vivekd | DuncanT: could you please approve this? https://review.openstack.org/271848 | 18:10 |
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| openstackgerrit | Alex Meade proposed openstack/cinder-specs: User facing error messages https://review.openstack.org/274958 | 18:15 |
| ameade | eharney, DuncanT: ^^ | 18:15 |
| ameade | fairly short spec | 18:15 |
| ameade | i'll get an implementation up in a couple days | 18:16 |
| smcginnis | ameade: That's to address the API wg spec, right? | 18:16 |
| smcginnis | ameade: Oh, nevermind. | 18:16 |
| smcginnis | Just saw the other activity, then this one. | 18:16 |
| ameade | smcginnis: i was SO CONFUSED, lol | 18:16 |
| smcginnis | Thought you were really quick on that. :) | 18:16 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Migration: take the local_path for the source volume https://review.openstack.org/250220 | 19:03 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (mirror) https://review.openstack.org/237387 | 19:29 |
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| ildikov | hemna: smcginnis: hi. are you around? | 19:30 |
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| hemna | hey | 19:34 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication https://review.openstack.org/237387 | 19:35 |
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| ildikov | hemna: hey, just wanted to check whether we have a plan for multiattach regarding addressing the issues we identified so far | 19:36 |
| ildikov | I hoped we can merge more patches, but I still need ot improve my karma it seems... | 19:38 |
| hemna | so, I wasn't sure where we ended up really | 19:43 |
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| hemna | I think I had to revert my host cinder patch that allowed the host name along with instance_uuid | 19:43 |
| hemna | and everything was going to be disabled | 19:43 |
| hemna | ? | 19:44 |
| hemna | I was kinda confused by it all TBH | 19:44 |
| smcginnis | I'm back... | 19:44 |
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| smcginnis | ildikov, hemna: So I think the nova patch needed to be reverted. | 19:44 |
| smcginnis | The cinder one could be, but I don't think that part was critical. | 19:44 |
| smcginnis | The main problem was nova sending both to an older cinder service that enforced NOT having both. | 19:45 |
| ildikov | smcginnis: no, the Cinder part is not critical | 19:45 |
| hemna | ok I wasn't sure, we have it in our notes that I was going to revert the cinder patch | 19:45 |
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| smcginnis | Making that a backwards incompatible thing. | 19:45 |
| smcginnis | hemna: Yeah, we did talk about that. | 19:45 |
| ildikov | I don't know why that check was introduced there, but for now the Cinder side patch does not cause any issue | 19:45 |
| smcginnis | But thinking more, not sure if we absolutely have to. | 19:45 |
| hemna | which is why I posted this one : https://review.openstack.org/#/c/275316/ | 19:45 |
| hemna | we could re-add it after as a microversion | 19:46 |
| ildikov | and the Nova patch caused issue "only" for upgrade scenarios and mixed environments (new Nova - old Cinder) | 19:46 |
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| ildikov | does Nova have to pass the host_name to Cinder? | 19:46 |
| ildikov | I think that's the fundamental question here as if yes, then we either need to keep that Cinder patch or figure out something else | 19:47 |
| hemna | so... | 19:47 |
| ildikov | my concern still is that how to make detach work? | 19:47 |
| hemna | it's nice to have that host | 19:47 |
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| hemna | because then cinder can determine how many volumes are attached to that host | 19:48 |
| smcginnis | ildikov: So I think if it's just possible to change that nova handling to try both, and if that fails, try failing back to just one, that would at least get by the backwards incompatible piece. | 19:48 |
| hemna | as well as how many times a volume is attached to a host | 19:48 |
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| ildikov | smcginnis: you mean Nova should check which Cinder it talks to? | 19:48 |
| smcginnis | ildikov: Either check, or instead of failing out when it gets an error back from sending both host and instance_uuid, retry with just one or the other. Whichever it sent before it was changed. | 19:49 |
| ildikov | hemna: live migration will mess up things | 19:49 |
| hemna | it always does :( | 19:49 |
| ildikov | hemna: although if we disable it for multiattach volume this info still can be used | 19:49 |
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| hemna | I think the problem was | 19:50 |
| hemna | that if we get a new nova (Mitaka), before upgrading Cinder, Cinder will puke | 19:51 |
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| ildikov | smcginnis: yeah, we can give that a try | 19:51 |
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| hemna | because Liberty Cinder can't handle host and instance_uuid at the same time. | 19:51 |
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| ildikov | hemna: we're wondering to do a second attach call without a host_name in that case | 19:51 |
| smcginnis | ildikov: I may be over simplifying things, but it seems like that should make Liberty Cinder happy without losing any functionality. | 19:52 |
| hemna | so | 19:52 |
| hemna | weren't we going to 'fix' this by adding a new microversion in Cinder that supports it ? | 19:52 |
| ildikov | although as we will not enable multiattach in Mitaka Nova, we can analyse more what needs to be fixed in Cinder to be able to detach the multiattach volumes as well | 19:53 |
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| ildikov | smcginnis: yeah, although with Liberty Cinder we should not enable multiattach as the detach will fail with certain drivers :( | 19:54 |
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| smcginnis | ildikov: We can't enable multiattach with Liberty, right? | 19:55 |
| ildikov | no, we can't | 19:55 |
| smcginnis | hemna: I forget, was everything in there for Liberty? | 19:55 |
| hemna | ? | 19:56 |
| scottda | I think Nova would need a try: block around the call that passes both host and instance_id to catch the exception from Liberty Cinder, then retry... | 19:56 |
| smcginnis | hemna: Was everything on the cinder side for multiattach landed in liberty? | 19:56 |
| scottda | microversions won't help that case | 19:56 |
| smcginnis | hemna: And yeah, I remember microversions being discussed as a preferred way to know if this is supported from the nova side. | 19:56 |
| ildikov | smcginnis: this patch contains comments with the logs from the tempest test regarding which parts of the detach fail: https://review.openstack.org/#/c/266605 | 19:56 |
| hemna | I think we landed multiattach stuff in Kilo for Cinder | 19:57 |
| smcginnis | Maybe overkill though if we just need exception handling around this in nova. | 19:57 |
| smcginnis | hemna: Shoot, that's right. Wow, time flies. | 19:57 |
| scottda | We should keep the Cinder-side fix that hemna has put up to revert...the sooner that is in Cinder, the sooner it won't blow up when NOva passes it in. | 19:57 |
| ildikov | so the host_name handling is a side-track here | 19:57 |
| smcginnis | scottda: Yeah, that's kind of what I'm thinking. | 19:58 |
| ildikov | scottda: that part I agree | 19:58 |
| smcginnis | I hate to remove it knowing that we actually do need it. | 19:58 |
| ildikov | scottda: in general having proper versioning can help in a few things | 19:58 |
| hemna | we do need it | 19:58 |
| hemna | but I think it should be microversioned | 19:58 |
| scottda | It does not hurt Cinder to have it, I don't think | 19:58 |
| hemna | so nova can ask for that microversion client | 19:58 |
| hemna | the trick is, I think that's done at cinderclient object creation | 19:58 |
| hemna | not per request | 19:58 |
| hemna | so nova has to know when to pass in host and not. | 19:58 |
| hemna | that part of microversions is confusing to me. | 19:59 |
| scottda | Yeah, not sure how that is going to work. We'll need some help from NOva folks to figure that out, and it might be too late for that code to get in Nova mitaks | 19:59 |
| scottda | s/mitaks/mitaka | 19:59 |
| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication https://review.openstack.org/237387 | 19:59 |
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| smcginnis | Isn't it pythonic to just pass it in and handle if it's not supported? | 20:00 |
| scottda | I think we might be able to put some logic in the cinderclient to rip out the host if the cinder (micro)version does not support it. | 20:00 |
| ildikov | in Nova the plan is to enable multiattach when all parts of Nova is upgraded to Newton | 20:00 |
| scottda | the cinderclient will know what version of cinder it is talking to. | 20:00 |
| smcginnis | scottda: Oh, that's an interesting idea, whether microversioned or not. | 20:00 |
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| hemna | scottda, ok makes sense | 20:01 |
| hemna | I guess cinderclient itself will know which version allows the host and instance_uuid to be sent over the wire | 20:02 |
| scottda | In fact, that might be the path to reconciling newer Nova stuffs with older cinder | 20:02 |
| scottda | I'd want to verify that line of thinking with others, i.e. mriedem , but it seems like that might be the best place to do any translations of parameters, etc. | 20:03 |
| scottda | BTW, I've been working on the changes to add new V3 endpoint for microversions. It passes tests on my workstation, but is having issues with Jenkins. | 20:04 |
| scottda | which makes me nervous about the timing of getting it landed. | 20:04 |
| hemna | coolsvap|away, that's a good first step :) | 20:04 |
| hemna | bah | 20:04 |
| smcginnis | scottda: Thanks, just looking through the notes from the midcycle on that and realizing we had identified a lot more work. :/ | 20:05 |
| scottda | Yup. That's not including the need for testing that jgriffith_away had asked for (I agree with him). | 20:06 |
| smcginnis | Yep | 20:06 |
| ildikov | Now you only need to update me that how we will solve the remove_export and the disconnect_volume issues :) | 20:08 |
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| hemna | lunch....bbiab | 20:13 |
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| scottda | ildikov: And am I correct that we need to have these issues resolved in Newton? In Mitaka the only things we can do are #1: land microversions (possible, but getting risky) #2: Do not revert hemna patch to accept both host and instance_id (may not be needed if we change directions) | 20:17 |
| scottda | #3: Figure out if we can get all drivers to create a new export per attach, regardless of if they are on the same host and/or | 20:17 |
| hemna | scottda, I don't think all drivers can do a new export per attach | 20:18 |
| scottda | #4: Create a cinder API to give a list of attachements, which might allow nova to have the logic as to when to detach | 20:18 |
| ildikov | scottda: I think microversion is good to have and hemna's patch can be useful if we disable live migration for multiattach | 20:18 |
| ildikov | scottda: as for #3 that would be crucial if we think that it's the solution for the detach problems | 20:19 |
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| scottda | hemna: Yeah, I thought that too, but I just read it in the Nova etherpad, it's an #Action item for jgriffith_away | 20:19 |
| hemna | so, should get the revert to land | 20:19 |
| ildikov | scottda: and I think it would be best in Mitaka | 20:19 |
| hemna | and then I can try working on a microversion follow up patch to re-enable the host + instance_uuid ? | 20:19 |
| ildikov | hemna: I mean we can use to have Cinder being able to accept both host and instance_id | 20:20 |
| scottda | hemna: I'm not sure about that. What's the original problem with Cinder getting both host and instance_uuid? | 20:20 |
| ildikov | hemna: yeah, if you would like to do that with microversion, then in that way | 20:20 |
| hemna | the problem is nova is upgraded to M, and Cinder is still at L | 20:20 |
| hemna | microversioned change helps that | 20:20 |
| hemna | I thinks | 20:20 |
| jgriffith_away | scottda: it breaks anybody running an older version of Cinder | 20:21 |
| scottda | hemna: Yes, I think so as well. Seems easy if done in cinderclient | 20:21 |
| ildikov | we can add a try block to the Nova call and fall back to the original call without host | 20:21 |
| ildikov | hemna: ^ | 20:21 |
| jgriffith_away | hemna: +1 | 20:21 |
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| hemna | ok, I'll see if I can hack on that later | 20:22 |
| scottda | jgriffith_away: yes, but I'm wondering why it was added in the first place. That is, would it be safe to allow both now, for Mitaka Cinder ? Yes, older Cinder would fail with newer Nova. | 20:22 |
| hemna | lets get the revert in for the time being then. | 20:22 |
| jgriffith | ildikov: scottda you can't do that | 20:22 |
| ildikov | jgriffith: what's up with the new export per attach plans? | 20:22 |
| jgriffith | ildikov: scottda particularly you can't rely on a specific version of the client for anything | 20:23 |
| jgriffith | ildikov: scottda the proper way to do what I *think* you want would be to have Nova catch the exception and retry with the old method | 20:23 |
| scottda | Couldn't Mitaka nova pin to the newest cinderclient or later, which would have the right logic? | 20:23 |
| ildikov | jgriffith: yeah, I was wondering to do a retry as smcginnis suggested above | 20:23 |
| smcginnis | That's my preference - catch and retry. | 20:23 |
| jgriffith | ildikov: scottda but when I mentioned that at the meetup someobdy said it might cause sdague's head to explode | 20:23 |
| scottda | we dont' want that. | 20:24 |
| jgriffith | scottda: no, certainly not | 20:24 |
| jgriffith | he's a super valuable guy... people would hate us :) | 20:24 |
| ildikov | jgriffith: there are many parts of the multiattach work which causes similar reactions in Nova :( | 20:24 |
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| jgriffith | ildikov: I'm just relaying what I was told :) | 20:24 |
| ildikov | jgriffith: lol :) | 20:24 |
| scottda | So, that leaves #4) Add Cinder API to return all attachements and let Nova figure out when to call terminate_conn and detach | 20:25 |
| jgriffith | scottda: but that doesn't solve the problem | 20:25 |
| ildikov | jgriffith: to be honest my intention with starting this discussion was to figure out how to safely detach multiattached volumes | 20:25 |
| jgriffith | scottda: if you can assume they're on the right version of Cinder and Cinder API you wouldn't have a problem to begin with :) | 20:25 |
| ildikov | jgriffith: I'm not sure that this host_name discussion will lead us to the solution | 20:25 |
| jgriffith | ildikov: safest way IMHO is to give each their own attachment/target record in the db | 20:26 |
| jgriffith | ildikov: and have a ref-counter *somewhere* | 20:26 |
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| smcginnis | Or as scottda stated as above. That's my ultimate preferred approach. | 20:27 |
| ildikov | jgriffith: you mean even if we have one target for multiple attachments Cinder would remove the target when detaching the last one? | 20:27 |
| jgriffith | smcginnis: which? | 20:27 |
| smcginnis | Nova needs to know whether to tell us to detach or not. | 20:27 |
| jgriffith | smcginnis: ahh.. yeah that :) | 20:27 |
| smcginnis | If nova is still using it, don't tell us to get rid of it. | 20:27 |
| jgriffith | smcginnis: scottda agreed, and in that model, nova gets a ref counter to manage | 20:27 |
| ildikov | smcginnis: in my understanding the behavior depends on the driver that Cinder is using | 20:27 |
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| scottda | Or can get those attachment/target records and figure out ref count from that | 20:28 |
| jgriffith | smcginnis: scottda that does seem like the *right* place | 20:28 |
| jgriffith | ildikov: true, but we'll never have this problem if they're not using a multi-attach version of Cinder :) | 20:28 |
| ildikov | smcginnis: if Cinder is deterministic regardless of the driver than Nova could do this, but it seems more to be Cinder's responsibility | 20:28 |
| scottda | ildikov: I think that's a big problem. It will not be determinitstic. | 20:29 |
| ildikov | jgriffith: will you be the one who tells hemna that the multiattach feature will never be implemented? ;) | 20:29 |
| smcginnis | Lol | 20:29 |
| ildikov | scottda: that's my thought exactly, this is why Nova cannot handle this part on its own | 20:29 |
| jgriffith | ildikov: I'm certainly not saying that at all | 20:30 |
| ildikov | jgriffith: sorry, I was just kidding, but I have an odd sense of humor | 20:30 |
| jgriffith | ildikov: :) NO, I get it... I do the same thing | 20:30 |
| jgriffith | ildikov: I took it as a joke | 20:30 |
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| scottda | It's how we all survive | 20:31 |
| ildikov | jgriffith: especially that I worked on the Nova patches over Christmas, this feature can now be killed only throug my dead body ;) | 20:31 |
| jgriffith | ildikov: but wanted to be clear before hemna saw it and *his* head exploded :) | 20:31 |
| ildikov | jgriffith: haha, got me :D | 20:31 |
| ildikov | jgriffith: lol :) | 20:31 |
| ildikov | ok, back to the point | 20:32 |
| ildikov | having the attachment/target record in the DB sounds like a good direction for me | 20:33 |
| ildikov | I mean that way it could be checked in the DB whether the target needs to be removed or not if I'm not mistaken | 20:34 |
| ildikov | jgriffith: ^^ | 20:34 |
| jgriffith | ildikov: yes, exactly | 20:34 |
| jgriffith | ildikov: I'm not sure, but I seem to recall a ref counter could be added to BDM maybe | 20:34 |
| jgriffith | but I need to look closer at that | 20:34 |
| ildikov | jgriffith: you mean in Nova? | 20:34 |
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| jgriffith | ildikov: correct... back to the "don't call detach if you don't really mean it" | 20:35 |
| jgriffith | as scottda and smcginnis pointed out | 20:35 |
| ildikov | jgriffith: I think we need to find the solution for the target removal in Cinder | 20:35 |
| jgriffith | ildikov: perhaps | 20:36 |
| ildikov | jgriffith: as how the target is exported depends on the driver in Cinder | 20:36 |
| ildikov | jgriffith: in Nova we will need to handle disconnect_volume | 20:36 |
| ildikov | jgriffith: as in Nova we call out to os-brick to also remove the initiator | 20:37 |
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| smcginnis | Well... if Nova would be changed to not detach if it's still in use, couldn't it also be changed to not ask for a new export for every time it uses it for a different instance? | 20:39 |
| smcginnis | I guess I don't get why multiple are needed. | 20:39 |
| smcginnis | Expose when needed, do whatever is wanted on the nova side with it, detach when done. | 20:39 |
| scottda | jgriffith: So, in your model for an attachment/target record in the DB, would it be 1 record if the driver exports for each attachment on a host, and multiple records if the driver multiplexes the target for multiple attachments on the same host? | 20:39 |
| ildikov | jgriffith: also the BDM is the last thing in Nova I would want to get involved in this, especially that it is always said that Cinder is the ulimate source of truth | 20:39 |
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| ildikov | smcginnis: AFAIR hemna said that 3PAR will export new for each attachment | 20:40 |
| ildikov | smcginnis: or he said something very similar to this :) | 20:40 |
| smcginnis | ildikov: But if Nova never asks for a new attachement... | 20:40 |
| ildikov | smcginnis: I don't know that driver enough to know why it is needed or not needed there | 20:41 |
| jgriffith | scottda: in my model it would be 1:1 | 20:41 |
| smcginnis | jgriffith: +1 | 20:42 |
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| ildikov | but if it's 1:1 it means that each attachment has its own target, right? | 20:43 |
| smcginnis | jgriffith: You meant 1:1 as in nova compute host to cinder volume, right? | 20:44 |
| scottda | I'm wondering if we could add a new record for each target the driver exposes. Then we could remove a record for each call to terminate_conn, and when the last record is gone we could remove_export | 20:45 |
| scottda | That would be the ref counting. | 20:45 |
| scottda | Sorry, should not be "each target" but "each attatchment" | 20:45 |
| jgriffith | I mean 1:1 as in even if you have a single volume attached multiple times to a single compute-node you have an entry for each attach | 20:46 |
| jgriffith | brb | 20:46 |
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| scottda | If SolidFire exposes a new target for each attach in a multi-attach, there would only be 1 record and when detach is called, the export is removed... | 20:46 |
| scottda | If 3par uses the same target for many attaches to a single host, there'd be 1 record for each. When the last one is gone, the export is removed. | 20:47 |
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| scottda | Just an idea as to how to manage this... | 20:48 |
| ildikov | scottda: yeah, I was thinking about the same | 20:48 |
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| ildikov | scottda: pushing this to Nova and BDM could but I think it's rather would mess things up | 20:48 |
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| openstackgerrit | Angela Smith proposed openstack/cinder: Adds support for configuring zoning in a virtual fabric https://review.openstack.org/275407 | 21:01 |
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| openstackgerrit | Michael Rowden proposed openstack/cinder: Correcting thin provisioning for LVM https://review.openstack.org/275408 | 21:04 |
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| angela-s | smcginnis: what should i do about this jenkins failure on this spec? https://review.openstack.org/#/c/144384/ | 21:15 |
| angela-s | smcginnis: i do not understand what the issue is | 21:15 |
| smcginnis | angela-s: Yeah, that's weird. | 21:16 |
| smcginnis | angela-s: It looks like some additional checks were added after the first submission. | 21:16 |
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| smcginnis | angela-s: It looks like it needs to be updated to address the errors and warning now pointed out by the test. | 21:17 |
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| mtanino | jungleboyj: hello, are you there? | 21:20 |
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| mtanino | jungleboyj: I have posted a bug fix which you marked as high. If you'll have a chance, please give me a feedback. thanks. | 21:22 |
| mtanino | https://review.openstack.org/#/c/274204/2 | 21:22 |
| angela-s | smcginnis: argh, this sucks. | 21:22 |
| angela-s | smcginnis: anyway to just float this one through? :) | 21:22 |
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| * angela-s crossing fingers, but knowing it's of no use | 21:23 | |
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| smcginnis | angela-s: Hah, I considered it too. But since it does change the FCZM driver interface that others would potentially need to implement to, it should probably be updated and merged. | 21:25 |
| smcginnis | angela-s: If you can make the changes to make the test happy, I can push that one through as soon as Jenkins is happy with the revisions. | 21:25 |
| openstackgerrit | Merged openstack/python-cinderclient: is_public=N/A in output of cinder type-update https://review.openstack.org/274429 | 21:25 |
| smcginnis | angela-s: Sorry, I know it's a pain. | 21:25 |
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| smcginnis | Be back online later. Need to drive home through the snow storm. Yay. :| | 21:26 |
| mtanino | smcginnis: take care. | 21:27 |
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| hemna | angela-s, what's up ? | 21:29 |
| angela-s | hemna: the sky | 21:29 |
| hemna | :) | 21:30 |
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| angela-s | hemna: i noticed you tried to do recheck on that spec failure, thanks, looks like i'm gonna have to work on the formatting though | 21:31 |
| angela-s | and probably on the other spec too, argh... | 21:32 |
| hemna | ah ok. yah I wasn't sure why it puked | 21:32 |
| hemna | I figured a recheck would 'fix' it :P | 21:32 |
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| angela-s | would've been nice, but not my luck | 21:32 |
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| scottda | angela-s: It looks like you removed the title for "use cases" . That might be why that fails. | 21:36 |
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| patrickeast | hemna: hey, got a min for https://review.openstack.org/#/c/236143/14/cinder/volume/drivers/hpe/hpe_3par_common.py ? | 21:38 |
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| hemna | hey | 21:40 |
| hemna | I'm probably missing something, or stupid today | 21:40 |
| hemna | or both! | 21:40 |
| patrickeast | haha | 21:40 |
| patrickeast | so what i was suggestion is that you *could* catch the not found error | 21:41 |
| patrickeast | and ignore it | 21:41 |
| hemna | oh | 21:41 |
| hemna | lolz | 21:41 |
| hemna | yah | 21:41 |
| hemna | duh | 21:41 |
| hemna | that would be odd that happened, but sure | 21:41 |
| hemna | in the case that someone else is deleting at the same time I suppose | 21:41 |
| patrickeast | yea i only suggest it since it looks like those temp snapshots expire | 21:41 |
| patrickeast | i dunno exactly what that means | 21:41 |
| hemna | yah they can expire | 21:42 |
| patrickeast | but if they are deleted when time runs out, its a chance for them to be deleted under cinder | 21:42 |
| hemna | and they can vanish, depending on the setting and how busy the array is | 21:42 |
| patrickeast | gotcha | 21:42 |
| hemna | yah good call. | 21:42 |
| hemna | ok I wasn't following that in the chatter in the review. | 21:42 |
| hemna | thanks, I'll look for that and push up another one. | 21:42 |
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| hemna | like I said....missing something and stupid | 21:42 |
| hemna | :P | 21:42 |
| patrickeast | haha, nah looking at the comments in gerrit i was having trouble even following | 21:43 |
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| hemna | man gerrit seems like a POS today | 21:48 |
| hemna | slow, and I just now got a random 503 | 21:48 |
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| hemna | and a 502 | 21:49 |
| hemna | *sigh* | 21:49 |
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| jbernard | hemna: i like my gerrit the same way i like my coffee: ground up and in the freezer | 21:53 |
| hemna | :) | 21:53 |
| jbernard | that one needs some more work | 21:54 |
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| mc_nair | anyone know of a way to set configure the minimum volume size for Cinder? I see that Rackspace has minimum volume size requirements, but haven't been able to find any code on it so guessing that's custom code... | 22:00 |
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| guitarzan | mc_nair: our backend does it itself | 22:06 |
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| mc_nair | guitarzan: cool, thanks. Wasn't sure if there was a global Cinder config or just up to backend if they care about that sort of thing (think I've got my answer though) | 22:08 |
| angela-s | scottda: thanks! i'll try that first :) | 22:08 |
| guitarzan | adding it to cinder proper was suggested and people didn't seem to think it was too crazy of an idea | 22:09 |
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| jungleboyj | guitarzan: Thanks. I thought we had discussed it in the past. So it is just something that hasn't been implemented? | 22:28 |
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| guitarzan | yeah, no one (me?) has taken the time to do it | 22:30 |
| openstackgerrit | Angela Smith proposed openstack/cinder-specs: Spec for FCZM Zone Driver Friendly Zone names https://review.openstack.org/144384 | 22:30 |
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| angela-s | smcginnis: ^^^ spec is fixed. scottda: thank you! | 22:31 |
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| openstackgerrit | Angela Smith proposed openstack/cinder-specs: Spec for Brocade Zone Driver Virtual Fabrics support https://review.openstack.org/144389 | 22:39 |
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| smcginnis | angela-s: Thanks. Will take a look once Jenkins blesses it. | 23:05 |
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| scottda | angela-s: cool! | 23:11 |
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| openstackgerrit | Merged openstack/cinder-specs: Spec for FCZM Zone Driver Friendly Zone names https://review.openstack.org/144384 | 23:45 |
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