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| openstackgerrit | LisaLi proposed openstack/cinder: Copy encryptors from Nova to Cinder https://review.openstack.org/217557 | 02:24 |
|---|---|---|
| openstackgerrit | LisaLi proposed openstack/cinder: Copy encryptors from Nova to Cinder https://review.openstack.org/217557 | 02:33 |
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| tbarron | jgriffith: jungleboyj: just catching up with backlog. Thanks for the help. | 02:39 |
| openstackgerrit | Wilson Liu proposed openstack/cinder: Fix capacity report error in Huawei driver https://review.openstack.org/226308 | 02:46 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Fix capacity report error in Huawei driver https://review.openstack.org/226308 | 02:58 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Remove the destination volume check in delete_volume https://review.openstack.org/219108 | 03:02 |
| openstackgerrit | Wilson Liu proposed openstack/cinder: Change "Storage" to "LUN" in Huawei driver https://review.openstack.org/226612 | 03:03 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Encode username and password in Huawei driver https://review.openstack.org/216085 | 03:06 |
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| openstackgerrit | chenying proposed openstack/python-cinderclient: Fix three resources not being deleted by using name https://review.openstack.org/223067 | 03:14 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Fix URL format in Huawei driver https://review.openstack.org/226618 | 03:43 |
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| openstackgerrit | Cedric Zhuang proposed openstack/cinder: Add retype logic in manage_existing for VNX https://review.openstack.org/209176 | 04:16 |
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| openstackgerrit | Ankit Agrawal proposed openstack/cinder: Remove duplicate keys from dictionary https://review.openstack.org/226630 | 05:59 |
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| openstackgerrit | Cedric Zhuang proposed openstack/cinder: Add retype logic in manage_existing for VNX https://review.openstack.org/209176 | 06:54 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Huawei driver add check before use a QoS https://review.openstack.org/226637 | 07:04 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Encode username and password in Huawei driver https://review.openstack.org/216085 | 08:19 |
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| openstackgerrit | Cedric Zhuang proposed openstack/cinder: Add retype logic in manage_existing for VNX https://review.openstack.org/209176 | 09:52 |
| openstackgerrit | Tina Tang proposed openstack/cinder: Create volume in cg enhancement in VNX driver https://review.openstack.org/226674 | 09:54 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Encode username and password in Huawei driver https://review.openstack.org/216085 | 10:24 |
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| dulek | geguileo: Hi! I've been out of sync for a while, but I'm getting the feeling that I understand the approach to c-vol A/A in Mitaka. | 10:43 |
| dulek | geguileo: Do we have an idea how to tackle cleanup phase in init_host correctly? | 10:43 |
| dulek | geguileo: Right now on restart we'll get our volume deleted even if other node is taking care of it. | 10:44 |
| geguileo | dulek: I have an idea, yes | 10:44 |
| dulek | geguileo: Are we jumping into your "simpler" approach, or there's something else on the wall? | 10:44 |
| geguileo | dulek: I don't know if anyone has a better idea | 10:44 |
| geguileo | dulek: But I haven't heard any other thoughts on it | 10:45 |
| * dulek is getting into careful review of the idea then. | 10:45 | |
| dulek | A spec is probably needed for that, isn't it? | 10:46 |
| geguileo | dulek: The cleanup should not add cluster@backend when queuing the job | 10:48 |
| geguileo | dulek: As this would conflict with default cluster value (equals host) | 10:48 |
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| openstackgerrit | Wilson Liu proposed openstack/cinder: Change "Storage" to "LUN" in Huawei driver https://review.openstack.org/226612 | 11:07 |
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| dulek | geguileo: Sorry, needed to switch context. You're referring to some changes in approach described in the blogpost? Or directly to it? | 11:17 |
| geguileo | dulek: Something that the post says I'd do, but later realized that it would create problems | 11:17 |
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| dulek | geguileo: Ok, I'll have that in mind while rereading it. | 11:18 |
| geguileo | dulek: Ok | 11:18 |
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| openstackgerrit | wanghao proposed openstack/cinder: CG creation should be scheduled on backend level https://review.openstack.org/224405 | 12:38 |
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| dulek | geguileo: https://bugs.launchpad.net/cinder/+bug/1498886 - I think you've fixed that accidentally. Should we think of a Kilo backport? | 12:46 |
| openstack | Launchpad bug 1498886 in Cinder "detail snapshot list API return empty object for metadata" [Undecided,New] | 12:46 |
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| dulek | geguileo: Ah, maybe not, you've just moved isinstance check somewhere else. Anyway I cannot reproduce that in Liberty. | 12:47 |
| geguileo | dulek: If I accidentaly fixed it moving it to the view builder I don't think that will be allowed to be backported... | 12:48 |
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| geguileo | dulek: That actually may have been fixed by the snapshot versioned object | 12:50 |
| dulek | geguileo: Snapshot object got merged in Kilo. | 12:51 |
| geguileo | dulek: Mmmm, that's weird then (that you cannot reproduce it) | 12:51 |
| geguileo | More info is needed to reproduce it | 12:51 |
| dulek | geguileo: I cannot in Liberty, maybe it is reproducible in Kilo. | 12:52 |
| geguileo | Maybe, but that is a little bit weird bug r:-? | 12:53 |
| geguileo | dulek: By the way, thanks for catching that bug in the conditional update patch!! | 12:54 |
| geguileo | Well, it's not a bug because it doesn't fail, but it's bad coding anyway XD | 12:54 |
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| dulek | geguileo: I think "simpler" solution is missing a part on reader locks without a DLM. | 14:43 |
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| geguileo | dulek: I don't remember right now, but since locks will be pushed down to drivers | 14:44 |
| geguileo | dulek: We just need to remove 4 locks from manager (if I remember correctly) | 14:44 |
| dulek | geguileo: Yeah, these are the problematic ones. | 14:44 |
| geguileo | dulek: And I looked at several options some time ago, but can't remember specifics right now | 14:44 |
| dulek | geguileo: How about just having a constraint that we cannot remove a snapshot if there's a volume in creating state that are originating from it? | 14:44 |
| dulek | geguileo: With your cleanup solution we get that cleared into error eventually. | 14:45 |
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| dulek | geguileo: That would mean - we don't have 'reading' state and don't need to worry about cleaning it up. | 14:45 |
| geguileo | dulek: Yeah, probably we'll handle half of that in API and we'll have to check if there are more cases | 14:46 |
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| dulek | geguileo: That would be for the delete_volume and delete_snapshot stuff. I'm not sure on detach/attach locks. | 14:46 |
| geguileo | I have to go back and have a look at the whole solution | 14:46 |
| geguileo | Those have no problem when comming from Nova | 14:46 |
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| geguileo | The problem is when we do attach/detach inside Cinder | 14:47 |
| geguileo | I have a couple of ideas, but have to look more in depth into the code | 14:47 |
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| openstackgerrit | Scott DAngelo proposed openstack/cinder-specs: cinder-api-microversions https://review.openstack.org/223803 | 14:48 |
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| dulek | geguileo: Are you planning to organize that into a spec? | 14:48 |
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| geguileo | dulek: Yes | 14:49 |
| dulek | geguileo: Discussion would be probably easier then. | 14:49 |
| geguileo | dulek: But I want to finish with a sqlalchemy bug that is blocking my conditional updates | 14:49 |
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| dulek | geguileo: Thanks! Great to be in sync again! :) | 14:50 |
| eharney | does this error message ring a bell for anyone? | 14:51 |
| eharney | Caught error: (MissingDependencies(u"'taskflow.patterns.linear_flow.Flow: volume_create_api(len=5)' requires ['reservations', 'volume_id', 'volume_properties'] but no other entity produces said requirements" | 14:51 |
| dulek | eharney: It doesn't, but can you reveal line number? | 14:51 |
| dulek | eharney: Is it on master? | 14:52 |
| eharney | someone filed a bug about this from our liberty packages, but it looks like a bug in our use of taskflow etc | 14:53 |
| eharney | i don't have a line number | 14:53 |
| eharney | (our liberty packages downstream) | 14:53 |
| dulek | eharney: Ah, so it's unlikely same happens on master? | 14:54 |
| eharney | dulek: well, these packages are a couple days old at best, so... i bet there's some way to make it happen | 14:55 |
| eharney | i'll try to find some more useful info, was just hoping someone recognized the error signature | 14:55 |
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| dulek | eharney: Okay, I'll look for the problem. | 14:55 |
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| dulek | eharney: In current state of master such bug shouldn't be possible to happen. | 15:05 |
| dulek | eharney: Every requirement for a task seems satisfied. | 15:05 |
| dulek | eharney: Does it happen on volume creation? | 15:07 |
| openstackgerrit | Kendall Nelson proposed openstack/cinder: WIP:(until Mitaka opens) Missing configuration opts from cinder.sample.conf https://review.openstack.org/225974 | 15:07 |
| eharney | dulek: yes -- i'm trying to figure out what Cinder git sha this correlates to... not really familiar w/ delorean packages | 15:09 |
| hemna | mornin | 15:09 |
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| dulek | eharney: I've got to go away for a moment, but feel free to ask questions anytime. I've refactored all the TaskFlow stuff related to vol creation in L, so I *should* understand that (am I really? ;)). | 15:10 |
| smcginnis | hemna: Morning | 15:10 |
| smcginnis | eharney: Is there a bug link for this? | 15:10 |
| eharney | smcginnis: just the RDO one at https://bugzilla.redhat.com/show_bug.cgi?id=1265690 | 15:11 |
| openstack | bugzilla.redhat.com bug 1265690 in openstack-cinder "Failed to create cinder volume using Delorean Trunk packages" [Unspecified,New] - Assigned to eharney | 15:11 |
| hemna | Delorean ? | 15:11 |
| hemna | I thought they stopped making those cars | 15:11 |
| smcginnis | Wow, how many different bug trackers is the OpenStack bot handling. :) | 15:11 |
| dulek | hemna: https://github.com/myusuf3/delorean | 15:11 |
| dulek | "Delorean: Time Travel Made Easy", I really like that. :D | 15:12 |
| eharney | smcginnis: yeah, i wasn't really expecting it to yell on that one | 15:12 |
| hemna | dulek, hah! | 15:12 |
| dulek | Though I'm not sure if that's what eharney meant. ;) | 15:12 |
| smcginnis | So kilo code but an uncapped library? | 15:12 |
| smcginnis | Oh, nope, now I see liberty. | 15:13 |
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| hemna | smcginnis, https://review.openstack.org/#/c/226522/ | 15:15 |
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| hemna | also, https://review.openstack.org/#/c/226507/ | 15:16 |
| smcginnis | hemna: Done. | 15:16 |
| hemna | thanks | 15:16 |
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| hemna | dulek, ping | 15:18 |
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| openstackgerrit | xing-yang proposed openstack/cinder: Fix VMAX live migration problem https://review.openstack.org/226847 | 15:26 |
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| openstackgerrit | Thierry Carrez proposed openstack/cinder: Open Mitaka development https://review.openstack.org/226850 | 15:36 |
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| openstackgerrit | xing-yang proposed openstack/cinder: Fix VMAX live migration problem https://review.openstack.org/226847 | 15:52 |
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| openstackgerrit | xing-yang proposed openstack/cinder: Fix VMAX live migration problem https://review.openstack.org/226847 | 15:53 |
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| dulek | hemna: pong | 15:59 |
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| pv_ | hey i keep running into this error http://pastebin.com/ZJryFtzx while testing the copy_image_to_volume method | 16:47 |
| pv_ | has anyone seen this? | 16:47 |
| pv_ | sorry for the weird log formatting | 16:47 |
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| jgriffith | pv_: no, but make sure your filesystem isn't full | 17:01 |
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| jgriffith | although... hmm, that's probably not it | 17:02 |
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| smcginnis | pv_: We had some weird CI failures that appeared to be caused by the network. | 17:04 |
| smcginnis | pv_: I think it caused IO failures that would bubble up to odd errors like saying the volume was too small. | 17:04 |
| smcginnis | pv_: Maybe something similar? | 17:04 |
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| pv_ | hmm ok, yeah it may be | 17:04 |
| pv_ | i originally though the volumes were too small | 17:04 |
| pv_ | but that doesnt seem to be it | 17:05 |
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| patrickeast | could be that something is happening to the temporary image file while the convert is going on | 17:05 |
| pv_ | i see this "NOTE(avishay): I'm not crazy about creating temp files which may be large and cause disk full errors which would confuse users. Unfortunately it seems that you can't pipe to 'qemu-img convert' because it seeks. | 17:06 |
| pv_ | in the comments of the fetch_to_raw method which is part of my traceback | 17:06 |
| pv_ | could that be it? | 17:06 |
| smcginnis | pv_: Maybe run df while it's happening and see if you are running low? | 17:07 |
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| jgriffith | pv_: just run df now | 17:10 |
| jgriffith | pv_: how much free-space do you have? | 17:10 |
| jgriffith | pv_: and how big of a volume/image are you trying to create? | 17:10 |
| pv_ | df output http://pastebin.com/SsnuGy9P | 17:11 |
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| pv_ | and 100gb recognized by cinder, but in actuality only 100mb because of testing i havent made the units from cinder trickle down into our backend | 17:12 |
| pv_ | so i type in cinder create --image-id <image id> 100, but thats because i need a 100 MB volume created on our backend | 17:12 |
| pv_ | for the image i usually use cirros-0.3.4-x86_64-uec | 17:12 |
| jgriffith | pv_: oh... so this isn't necessarily a bug, but you can't get your driver that you're developing to work | 17:12 |
| jgriffith | that's different :) | 17:12 |
| jgriffith | pv_: in that case, put a break in that conversion method and make SURE that your volume is actually attached | 17:13 |
| jgriffith | pv_: and that you can dd to it | 17:13 |
| pv_ | yeah i guess? haha i'm using the base driver's copy_image_to_volume | 17:13 |
| pv_ | oh | 17:13 |
| pv_ | yeah i can dd to it | 17:13 |
| jgriffith | ok | 17:14 |
| asselin | patrickeast, we've been seeing issues with FC passthrough | 17:14 |
| patrickeast | asselin: uh oh, new problems? | 17:14 |
| asselin | patrickeast, somehow the virst command fails and returns error code 0, previously it was error code 1 | 17:14 |
| patrickeast | oh weird | 17:15 |
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| patrickeast | just new return code? or the passthrough isn't working? | 17:15 |
| asselin | patrickeast, well, after the 1st one, the others fail | 17:15 |
| asselin | b/c the passthrough script expects non-zero to look at the 2nd hba | 17:15 |
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| asselin | I though it was new version of virsh b/c we updated our blades, but they're all 1.2.2 | 17:16 |
| mriedem | i'm curious as to what the expected behavior would be here? | 17:16 |
| mriedem | https://bugs.launchpad.net/nova/+bug/1496235 | 17:16 |
| openstack | Launchpad bug 1496235 in OpenStack Compute (nova) "Boot from volume faild with availability_zone option, in case of cinder do not have availability_zone" [Undecided,New] - Assigned to Ikuo Kumagai (i-kumagai) | 17:16 |
| patrickeast | hmm so why would it start returning different codes? | 17:16 |
| patrickeast | lemmie go check mine and see if its doing the same thing | 17:16 |
| asselin | patrickeast, no idea....and why would it return success 0 when it spits out an error ? | 17:17 |
| smcginnis | asselin: Did you change it to pipe through something else. Shot myself in the foot once because I piped through tee that will always return 0. | 17:17 |
| asselin | smcginnis, no, we pin to a version of the script | 17:17 |
| patrickeast | asselin: mine looks ok, http://ec2-54-67-51-189.us-west-1.compute.amazonaws.com/47/226847/3/check/PureFCDriver-tempest-dsvm-volume-multipath/dc7d009/console.html | 17:18 |
| patrickeast | asselin: is this happening consistently for you guys? | 17:18 |
| asselin | patrickeast, yes | 17:18 |
| patrickeast | although i am using a slightly different passthrough script | 17:18 |
| * patrickeast remembers that i still have to go update that review that has been sitting there for weeks | 17:19 | |
| asselin | patrickeast, http://paste.openstack.org/show/473787/ | 17:20 |
| asselin | https://git.openstack.org/cgit/stackforge/third-party-ci-tools/tree/provisioning_scripts/fibre_channel/invoke_fc_passthrough.sh#n153 | 17:21 |
| asselin | smcginnis, if you have ideas to help, le me konw ^^ | 17:21 |
| smcginnis | asselin: Sure, I'll take a look. | 17:21 |
| pv_ | my attach and detach methods seem to be working fine | 17:21 |
| mriedem | if you're going to boot an instance with a volume created from an image (nova does the volume create request), and you're specifying an az and that az isn't in cinder, the volume create is going to fail | 17:22 |
| scottda | mriedem: Others could answer better than I, but I think if you can create a c-vol without a Cinder AZ, you should be able to boot-from-vol without it. | 17:22 |
| mriedem | scottda: well the problem is knowing if the az exists in cinder | 17:22 |
| jgriffith | mriedem: you're correct | 17:22 |
| mriedem | here https://github.com/openstack/nova/blob/master/nova/virt/block_device.py#L381-L383 | 17:22 |
| scottda | yeah, you're right. | 17:22 |
| mriedem | so that's going to barf | 17:22 |
| mriedem | and hten nova barfs | 17:22 |
| mriedem | and then i reject your bug | 17:22 |
| jgriffith | mriedem: scottda the root of the problem is Cinder never really did AZ's | 17:23 |
| jgriffith | mriedem: scottda we've always just had one AZ and played dumb | 17:23 |
| jgriffith | which used to work ok, because we basically ignored it on both sides | 17:24 |
| patrickeast | asselin: weird, so that part of the code is exactly the same between the script i'm using and the one checked in | 17:24 |
| asselin | patrickeast, actually I think I know what could have cause it | 17:25 |
| patrickeast | asselin: but the logs are showing different return codes for basically the same error | 17:25 |
| patrickeast | oh? | 17:25 |
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| asselin | patrickeast, I added some ssh restrictions for that key | 17:25 |
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| scottda | It seems we could/should do something on the Cinder side for the AZ issue, like possibly ignore the parameter if cinder doesn't have an AZ | 17:25 |
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| pv_ | hmm it seems [01;31m2015-09-23 09:42:09.816 TRACE cinder.volume.flows.manager.create_volume [01;35m[00mProcessExecutionError: Unexpected error while running command. [01;31m2015-09-23 09:42:09.816 TRACE cinder.volume.flows.manager.create_volume [01;35m[00mCommand: sudo cinder-rootwrap /etc/cinder/rootwrap.conf qemu-img convert -t none -O raw /opt/stack/data/cinder/conversion/tmpSFP7fM /dev/disk/by-path/pci-0000:02:00.0-fc-0x10 | 17:27 |
| pv_ | the rootwrap command is throwing an error | 17:27 |
| eharney | pv_: qemu-img was throwing an error indicating an I/O error writing to your LUN | 17:28 |
| asselin | patrickeast, yup that was it! | 17:28 |
| patrickeast | sweet | 17:28 |
| harlowja | thingee hey, i put up http://odsreg.openstack.org/cfp/details/8 fyi | 17:28 |
| harlowja | if we both want to do that, i'm ok | 17:29 |
| asselin | sorry, but thanks for helping me figure it out. I should submit that as a patch now that I think of it...and that it works ;) | 17:29 |
| xyang1 | scottda: there is a fishbowl session for AZ | 17:29 |
| scottda | xyang1: That's right, I forgot | 17:30 |
| patrickeast | asselin: np, i'm glad that others run into these problems before me and can add documentation :D | 17:30 |
| asselin | patrickeast, yeah I was working on limiting what commands you can run via ssh using the passthrough key | 17:30 |
| patrickeast | ahh cool | 17:30 |
| patrickeast | i had been wondering about that | 17:30 |
| patrickeast | since i am basically giving a root key for the hypervisor to the ci slave | 17:31 |
| asselin | I had only tested one fc passthrough | 17:31 |
| asselin | patrickeast, right lol | 17:31 |
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| mriedem | jgriffith: scottda: thanks for the input re: https://bugs.launchpad.net/nova/+bug/1496235 - i just marked it as invalid | 17:35 |
| openstack | Launchpad bug 1496235 in OpenStack Compute (nova) "Boot from volume faild with availability_zone option, in case of cinder do not have availability_zone" [Undecided,Invalid] - Assigned to Ikuo Kumagai (i-kumagai) | 17:35 |
| mriedem | nova could filter the az from the volume create request, but i'm not sure if that's something nova should do | 17:35 |
| jgriffith | mriedem: yeah, unfortunately we need to figure out how to fix AZ's on the Cinder side | 17:36 |
| jgriffith | IMHO | 17:36 |
| thingee | harlowja: thanks | 17:36 |
| scottda | For now maybe it should, after discussing at the Summit we may decide to support Cinder AZs better . | 17:36 |
| mriedem | you guys have a lot on your plate for the summit it sounds like :) | 17:37 |
| mriedem | optimists for sure | 17:37 |
| smcginnis | I pity whoever is going to be the next PTL. Hah! | 17:38 |
| scottda | mriedem: How should we deal with closing Nova [volume] bugs? | 17:38 |
| hemna | :) | 17:38 |
| scottda | i.e. https://bugs.launchpad.net/nova/+bug/1208799 | 17:38 |
| openstack | Launchpad bug 1208799 in OpenStack Compute (nova) "after detach vol from VM the multipath device is in failed state" [High,Confirmed] | 17:38 |
| scottda | hemna: Just stated he thinks it's fixed. Should he close it? | 17:39 |
| hemna | scottda, I'd like to see this retested and make sure it's fixed. I believe it is. | 17:39 |
| mriedem | if there is a bug that fixed it (or a commit even) then i'd dupe | 17:39 |
| scottda | it's fixed in Brick (we think) | 17:40 |
| mriedem | if we think it's fixed but needs a retest on latest code, i typically mark as incomplete | 17:40 |
| mriedem | but incomplete leaves it on the books, | 17:40 |
| mriedem | so maybe just mark as invalid and say we think this is fixed in latest liberty, please retry and re-open if still hitting the issue | 17:40 |
| hemna | that bug looks like it's an IBM based volume. | 17:40 |
| mriedem | oh gross | 17:40 |
| mriedem | that's jungleboyj_'s fault then | 17:40 |
| hemna | jungleboyj_, do you know the guy that filed the bug ? | 17:40 |
| hemna | :) | 17:40 |
| jungleboyj_ | Huh? | 17:41 |
| jungleboyj_ | Is there a bus coming? | 17:41 |
| hemna | jungleboyj_, bug url ^^ | 17:41 |
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| hemna | jungleboyj_, I believe that bug has since been fixed. The details of the bug description looks like they were using an XIV array at the time | 17:41 |
| scottda | hemna: Are you OK with closing "probably fixed with Brick" bugs as invalid and "please re-try and re-open if still hitting..." | 17:41 |
| thingee | "if we both want to do that" ? | 17:41 |
| thingee | harlowja: ^ | 17:42 |
| hemna | jungleboyj_, so I was curious if you happened to know the filer of the bug. | 17:42 |
| jungleboyj_ | Know, don't recognize that person. | 17:42 |
| hemna | scottda, I think at a minimum putting the bug in incomplete status is warranted. | 17:42 |
| harlowja | thingee well if it gets selected, we can both talk about it, idk | 17:42 |
| jungleboyj_ | hemna: s/know/no | 17:42 |
| thingee | harlowja: I would be interested. Mostly to make sure the conversation stays on track | 17:42 |
| harlowja | k | 17:42 |
| harlowja | thats fine with me :) | 17:43 |
| jungleboyj_ | hemna: Yeah, that looks like XIV. | 17:43 |
| scottda | ok, that's fine. Just wanted to figure out how to go about triaging 100+ bugs efficiently | 17:43 |
| harlowja | thingee wrangle me in to, lol | 17:43 |
| hemna | jungleboyj_, the bug isn't specific to XIV fwiw. | 17:43 |
| hemna | we didn't have multipath -f <device> happening back then after detach | 17:43 |
| scottda | bbiab | 17:43 |
| hemna | which would cause that | 17:43 |
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| xyang1 | Can we backport a patch that has added a new string, like a warning msg? | 17:44 |
| thingee | harlowja: I will be commenting on your spec soon. Just have some loose ends I'm finishing up | 17:44 |
| harlowja | thingee cool | 17:44 |
| xyang1 | jgriffith: jungleboyj_ ? | 17:44 |
| jungleboyj_ | hemna: Ok. Sorry, I am in another meeting right now. So, what should we do with that bug? | 17:44 |
| hemna | jungleboyj_, mark it incomplete. needs to be retested | 17:45 |
| jungleboyj_ | hemna: Ok, makes sense. | 17:45 |
| smcginnis | xyang1: I believe so. It just might not get a translation right away. Or ever. | 17:45 |
| jungleboyj_ | xyang1: Yes, I think so. It just may not be translated. | 17:45 |
| xyang1 | smcginnis: jungleboyj_ ok, thanks | 17:45 |
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| jungleboyj_ | If there are bugs, they should be fixed. | 17:45 |
| hemna | scottda, jungleboyj_ https://github.com/openstack/os-brick/blob/master/os_brick/initiator/connector.py#L1122 | 17:45 |
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| cebruns | DuncanT: In the Mitaka Summit topic etherpad - what is the "bare metal attach" that is on the way? | 17:46 |
| jungleboyj_ | hemna: Oh, I remember that being fixed now that you point it out. | 17:47 |
| xyang1 | cebruns: https://review.openstack.org/#/c/224124/ | 17:47 |
| smcginnis | cebruns: I believe that's related to the keystone-less POC e0ne is working on. To be able to provision storage via Cinder, one consumer of which would be bare metal (ironic) outside of full OpenStack deployment. | 17:47 |
| hemna | cebruns, it's buried in there | 17:47 |
| smcginnis | s/keystone/nova/ | 17:48 |
| cebruns | xyang1: smcginnis hemna - Awesome - thanks! | 17:48 |
| hemna | cebruns, it's not explicitly called out, but it should be actually. | 17:48 |
| hemna | I can add it, I think it's worth noting at least and a sprint discussion. | 17:49 |
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| hemna | cebruns, ok it's in the etherpad at the bottom now. | 17:51 |
| xyang1 | hemna: i thing that one is good candidate for fishbowl | 17:52 |
| lpetrut | thingee: Hi | 17:54 |
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| lpetrut | thingee: We were wondering if the Microsoft CI can be re-enabled as it's stable now. ociuhandu sent some mails related to this on the ML, providing recent run info, but did not get any reply | 17:56 |
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| hemna | xyang1, so that one. | 17:59 |
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| xyang1 | hemna: hi | 17:59 |
| hemna | xyang1, we don't know why initialize_connection timed out, so the volume may be exported and it may not be. | 17:59 |
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| xyang1 | hemna: yes, so it is a best attempt, | 17:59 |
| hemna | if we call terminate_connection, what happens in drivers when the volume isn't exported ? | 18:00 |
| thingee | lpetrut: hey, let me take a look at the results. sorry forgot to add that to my list of things to do. | 18:00 |
| lpetrut | thingee: np, thanks! | 18:00 |
| xyang1 | hemna: driver has to handle that any way, there is try except | 18:00 |
| hemna | multiattach makes this a bit more complex as well fwiw | 18:00 |
| hemna | xyang1, I have a meeting to run to....bbiab. | 18:01 |
| xyang1 | hemna: ok | 18:01 |
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| thingee | lpetrut: you mind giving me the result links again? | 18:02 |
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| lpetrut | thingee: sure, http://paste.openstack.org/show/463339/ | 18:04 |
| jgriffith | hemnafk: I've been meaning to talk to you about multi-attach when you have some time | 18:04 |
| thingee | lpetrut: thanks checking | 18:04 |
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| thingee | lpetrut: where are iscsi driver tests? | 18:13 |
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| lpetrut | thingee: there's one folder for each driver: iscsi, smb3_windows, smb3_windows. eg: http://64.119.130.115/cinder/223375/4/iscsi/ | 18:14 |
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| lpetrut | *smb3_linux | 18:15 |
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| hogepodge | thingee: (and anyone else on the team), I've updated this with new capabilities. Let me know if there are any glaring errors in the categorization. Also, input on the scoring would be appreciated. Is everything there essential? | 18:19 |
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| asselin | patrickeast, https://review.openstack.org/#/c/226918/ | 18:20 |
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| hogepodge | thingee: oh yeah https://review.openstack.org/#/c/221631/ | 18:21 |
| asselin | patrickeast, but I already see that it needs to be customized a bit | 18:22 |
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| thingee | hogepodge: ack | 18:25 |
| thingee | lpetrut: ah sorry missed that. | 18:26 |
| thingee | asselin: you mind looking at these Microsoft CI logs http://paste.openstack.org/show/463339/ ... looking for being reenabled | 18:26 |
| thingee | asselin: I seem some basic stuff I look for | 18:26 |
| asselin | thingee, ok | 18:27 |
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| asselin | *sigh* microsoft ci has to be different from everyone else | 18:29 |
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| mriedem | hemnafk: there were two bugs that looked very similar for this, reported by the same person, i duped the newer against the older | 18:36 |
| mriedem | https://bugs.launchpad.net/nova/+bug/1454621 | 18:36 |
| openstack | Launchpad bug 1454621 in OpenStack Compute (nova) "Multipath device descripter is not deleted while the device pathes are removed after detach last volume form VM on a host" [Undecided,New] | 18:36 |
| mriedem | hemnafk: looks like that was reported for kilo, i'm wondering if it's fixed in os-brick in liberty | 18:36 |
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| thingee | asselin, lpetrut: you mean because of the folder names? I think lpetrut can fix that... | 18:37 |
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| asselin | thingee, there's a lot that could be made more common, but the basics are there | 18:38 |
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| mriedem | who works on iser volume stuff? | 18:56 |
| bauzas | heya, could someone explain me why AZs are in use with Cinder? | 18:56 |
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| bauzas | I mean, I can understand that you create a volume with an AZ, just wonder what it relates to | 18:56 |
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| bauzas | looking at bug https://bugs.launchpad.net/nova/+bug/1496235 | 18:57 |
| openstack | Launchpad bug 1496235 in OpenStack Compute (nova) "Boot from volume faild with availability_zone option, in case of cinder do not have availability_zone" [Undecided,Invalid] - Assigned to Ikuo Kumagai (i-kumagai) | 18:57 |
| bauzas | I don't get the relationship between Nova and Cinder | 18:57 |
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| bauzas | mostly because Nova AZs are actually aggregate metadata, ie. attached to hosts, not exactly corresponding to failure domains | 18:58 |
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| scottda | bauzas: I think the answer is that there is no relationship for AZs between Cinder and Nova | 19:03 |
| scottda | Cinder team is going to discuss AZs at the Tokyo summit... | 19:03 |
| bauzas | scottda: so I wonder why Cinder needs to get that info | 19:03 |
| bauzas | scottda: oh coolness | 19:03 |
| scottda | Cinder does not need the info from Nova | 19:03 |
| bauzas | scottda: I'll be in Tokyo too, so I could attend any session related to that | 19:04 |
| scottda | mriedem: had thoughts on how to fix from the Nova side. | 19:04 |
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| bauzas | scottda: well, I've been discussing that with mriedem and MHO is that I wonder why we need to give Cinder that info | 19:04 |
| mriedem | if there is no relationship between AZs in cinder and nova, | 19:04 |
| scottda | From earlier today: | 19:05 |
| scottda | 11:36 AM <mriedem> nova could filter the az from the volume create request, but i'm not sure if that's something nova should do | 19:05 |
| mriedem | then we could just not pass the instance az to the volume create | 19:05 |
| mriedem | however | 19:05 |
| scottda | right | 19:05 |
| bauzas | mriedem: yup | 19:05 |
| mriedem | if there is no relationship between az's in nova and cinder, | 19:05 |
| mriedem | then why do we have this in nova? https://github.com/openstack/nova/blob/master/nova/volume/cinder.py#L53 | 19:06 |
| bauzas | from my perspective, there is a big misunderstanding about what is a Nova AZ | 19:06 |
| scottda | mriedem: good question. | 19:06 |
| bauzas | it's like mapping between apples and bananas | 19:07 |
| mriedem | oldest related commit i see is https://github.com/openstack/nova/commit/18a1486293b15c5713ac1352b9b9b30fdf2b7413 | 19:07 |
| mriedem | so i bet in the long long ago when nova-volume was still a thing in tree, az's for compute and volumes were probably considered | 19:07 |
| mriedem | ndipanov: i don't suppose you're around | 19:08 |
| bauzas | meh, I need to see how AZs are handled in cinder | 19:08 |
| ndipanov | mriedem, sup | 19:08 |
| mriedem | ndipanov: why do we have this in nova? do you know? https://github.com/openstack/nova/blob/master/nova/volume/cinder.py#L53 | 19:09 |
| mriedem | ndipanov: i'm wondering if that's an artifact from nova-volume | 19:09 |
| ndipanov | hmmm | 19:09 |
| ndipanov | seems useless tbh | 19:10 |
| mriedem | looks like added in grizzly https://review.openstack.org/#/c/21672/ | 19:10 |
| jgriffith | bauzas: mriedem scottda since this is the hot topic of the day: https://bugs.launchpad.net/openstack-manuals/+bug/1377485 | 19:10 |
| openstack | Launchpad bug 1377485 in openstack-manuals "Use cinder availability-zone for creating a volume, NOT nova availability-zone" [Medium,Fix released] - Assigned to Darren Chan (dazzachan) | 19:10 |
| jgriffith | https://blueprints.launchpad.net/cinder/+spec/multiple-availability-zones | 19:10 |
| bauzas | jgriffith: but why AZs are used in cinder? | 19:10 |
| jgriffith | https://bugs.launchpad.net/nova/+bug/1380780 | 19:11 |
| openstack | Launchpad bug 1380780 in OpenStack Compute (nova) "Boot from image and create a new volume ignores availability zone" [Low,Fix released] - Assigned to Andrey Kurilin (andreykurilin) | 19:11 |
| jgriffith | and the list goes on and on | 19:11 |
| jgriffith | bauzas: because when I ported them over from nova-volume the plan was to eventually make something work :) | 19:11 |
| jgriffith | bauzas: becuase in nova-volume they actually "meant" A LOT | 19:11 |
| bauzas | jgriffith: just looking at the cinder scheduler, don't see anything related to AZs | 19:11 |
| jgriffith | bauzas: correct | 19:11 |
| mriedem | and nova-volume was dropped in grizzly | 19:12 |
| jgriffith | bauzas: because there's nothing there | 19:12 |
| jgriffith | mriedem: +1 | 19:12 |
| mriedem | so i'm not sure what https://review.openstack.org/#/c/21672/ was for | 19:12 |
| bauzas | heh, I remember the old stories | 19:12 |
| jgriffith | mriedem: DuncanT and his team have all sorts of crazy stuff :) | 19:12 |
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| bauzas | jgriffith: so, when creating a volume attached to an AZ, what happens ? | 19:13 |
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| jgriffith | mriedem: IIRC that was going to be 'step 1' in making cross AZ's work between Cinder and Nova | 19:13 |
| jgriffith | bauzas: you mean if you specify a random AZ at create? | 19:13 |
| bauzas | jgriffith: TBH, I have very little knowledge of Cinder since Grizzly.. | 19:14 |
| bauzas | jgriffith: I even played with nova-volume very long time ago | 19:14 |
| jgriffith | bauzas: probably because it didn't really exist til grizzly | 19:14 |
| jgriffith | :) | 19:14 |
| bauzas | jgriffith: but I'm not seasoned | 19:14 |
| jgriffith | bauzas: so the bottom line is we don't honor/handle AZ's in Cinder the way we should and it needs to be fixed IMO | 19:15 |
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| jgriffith | using anything other than the default zone is likely to cause issues | 19:15 |
| bauzas | jgriffith: okay, my take on that is that Nova AZs are misunderstood | 19:15 |
| jgriffith | bauzas: well, that's a whole seperate conversation :) | 19:15 |
| bauzas | jgriffith: most people think it's for having different failure domains at the datacenter granularity | 19:15 |
| jgriffith | bauzas: YES nova AZ's are a bit misunderstood | 19:16 |
| jgriffith | bauzas: cells make things worse | 19:16 |
| bauzas | jgriffith: bu t that's not | 19:16 |
| bauzas | jgriffith: yup, cells mapping to AZs are the special case where AZs are indeed datacenter failure domains | 19:16 |
| bauzas | jgriffith: all the other deployments aren't | 19:16 |
| jgriffith | bauzas: My recollection is that one of the problems is that Nova AZ's has morphed into something not entirely AZ like | 19:16 |
| mriedem | someone in the ML pointed out this https://review.openstack.org/#/c/217857/ | 19:16 |
| scottda | bauzas: How would you describe Nova AZs? | 19:16 |
| bauzas | scottda: sec, I wrote something on that | 19:17 |
| mriedem | scottda: bauzas: http://docs.openstack.org/developer/nova/aggregates.html#availability-zones-azs | 19:17 |
| jgriffith | mriedem: Oh.. nice | 19:17 |
| mriedem | jgriffith: that is a hack though, that cinder change, it seems like a hack anyway | 19:17 |
| jgriffith | I forgot about that | 19:17 |
| scottda | cool, thx | 19:18 |
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| jgriffith | mriedem: no matter how you look at it, AZ's in Cinder are a hack :( | 19:18 |
| bauzas | mriedem: oh cool, the upstream docs have been updated | 19:18 |
| bauzas | I was thinking that the merge would need a day to get the upstream docs updated | 19:18 |
| mriedem | so https://review.openstack.org/#/c/217857/ is merged but should probably not exist | 19:19 |
| smcginnis | Would be an interesting question for operators, to see how they're using (or trying to use) AZs. | 19:19 |
| mriedem | maybe HP has some special out of tree sauce for all of this? | 19:20 |
| guitarzan | most of us probably aren't using them at all for block | 19:20 |
| scottda | Well, it is a fish bowl sesssion at the summit, so hopefully we'll get ops feedback | 19:20 |
| guitarzan | since they don't really work :) | 19:20 |
| scottda | no, HP is not using out-of-tree code | 19:20 |
| bauzas | scottda: like I said, ping me when you know when the session is planned so I could attend it | 19:21 |
| jgriffith | scottda: HP Cloud? | 19:21 |
| smcginnis | Doesn't the public Helion cloud run through some scripts on a machine under DuncanT's desk?? | 19:21 |
| smcginnis | :) | 19:21 |
| jgriffith | smcginnis: LOL | 19:21 |
| scottda | We just divide the data centre into AZs and use the same AZ name for Cinder and Nova | 19:21 |
| scottda | yes, HP cloud | 19:21 |
| jgriffith | scottda: +1 | 19:21 |
| guitarzan | that seems like the obvious way to use them | 19:21 |
| bauzas | scottda: but there is no isolation from a dataplane perspective, right? | 19:22 |
| scottda | I guess be *believed* that Cinder and Nova AZs work as failure domains, and implemented it that way | 19:22 |
| bauzas | Nova AZs aren't failure domains | 19:22 |
| bauzas | I can't speak of Cinder | 19:22 |
| scottda | bauzas: There is some a the subnet level | 19:22 |
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| jgriffith | and here we goooo... :) | 19:22 |
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| scottda | bauzas: I get that, but I'm not so sure that was understood when the cloud was designed. | 19:22 |
| guitarzan | bauzas: why are you saying what they are and aren't? they certainly could be | 19:23 |
| guitarzan | unless I'm misunderstanding something | 19:23 |
| bauzas | guitarzan: they are the worst abstraction in Nova for having failure domains | 19:23 |
| bauzas | guitarzan: unless you map them with cells | 19:23 |
| guitarzan | by that you mean the *only* abstration no? | 19:23 |
| scottda | So, I think HP cloud pre-dates cells, and certainly pre-dates cinder... | 19:24 |
| bauzas | guitarzan: well, there are 4 ways to segregate your cloud | 19:24 |
| bauzas | guitarzan: regions (but that's keystone), cells, aggregates and AZS | 19:24 |
| bauzas | we recently added server groups | 19:24 |
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| jgriffith | if anyone cares russell did a nice write up on this a couple years ago: http://blog.russellbryant.net/2013/05/21/availability-zones-and-host-aggregates-in-openstack-compute-nova/ | 19:24 |
| bauzas | so, cells are the only way to have a datacenter level of isolation | 19:25 |
| bauzas | aggregates are for grouping a list of hosts implicitely | 19:25 |
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| bauzas | and AZs are just aggregates that are explicit | 19:25 |
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| jgriffith | bauzas: but to guitarzan 's point you can set those up and deploy them to use them in what ever manner you like | 19:25 |
| bauzas | jgriffith: yup, it was the first time I was understanding the right model | 19:26 |
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| bauzas | jgriffith: well, you still have one shared MQ and one shared database from a controlplane perspective | 19:26 |
| bauzas | whatever you deploy | 19:26 |
| jgriffith | bauzas: possibly... but there are ways around that as well | 19:27 |
| bauzas | jgriffith: you could use neutron and do tenant matching with AZs but that's a very specific deployment | 19:27 |
| guitarzan | bauzas: ah, I thought you were still talking dataplane like above | 19:27 |
| bauzas | jgriffith: well, there are 2 levels of failure | 19:27 |
| bauzas | if we speak of failure domains | 19:27 |
| jgriffith | ha... "you could use neutron" | 19:27 |
| bauzas | :) | 19:28 |
| bauzas | tbc, AWS AZs are both for failure domains and dataplane isolation | 19:28 |
| jgriffith | bauzas: true statement | 19:28 |
| bauzas | by speaking of network isolation, I mean you can't ping from one AZ to another AZ without using an external network | 19:28 |
| guitarzan | how does the first not imply the second? | 19:28 |
| guitarzan | ah | 19:28 |
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| * guitarzan thinks this isn't going to interest me :) | 19:29 | |
| jgriffith | LOL | 19:29 |
| jgriffith | guitarzan: shame on you | 19:29 |
| bauzas | in Nova, two AZs are not following that assumption unless you do a very specific setup | 19:29 |
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| bauzas | that's for the dataplane perspective | 19:29 |
| * guitarzan misread the concept of data plane isolation | 19:30 | |
| guitarzan | so it's not something I really care about :) | 19:30 |
| bauzas | now, speaking of failure domain at the datacenter granularity, I consider that if my datacenter goes down, the others bays are not impacted | 19:30 |
| bauzas | that's not true also for Nova, because you share at least the controller | 19:31 |
| bauzas | hence the big misunderstanding | 19:31 |
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| bauzas | what Nova promises you, is that if you boot one instance to AZ1 and one other to AZ2, you'll be 100% sure that they are on two separate nodes | 19:32 |
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| bauzas | that's the only thing => host failure domain, not datacenter | 19:32 |
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| scottda | makes sense | 19:33 |
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| bauzas | anyway | 19:33 |
| bauzas | so, Cinder is the only external consumer of our AZs AFAIK | 19:34 |
| mriedem | sorry i got disconnected, | 19:34 |
| mriedem | i hope i didn't miss any revelations | 19:34 |
| bauzas | mriedem: santa doesn't exist | 19:34 |
| mriedem | you already told me that last week | 19:34 |
| bauzas | mriedem: I'm a bad guy, I know | 19:34 |
| mriedem | btw, they are making a movie about the krumpus | 19:34 |
| mriedem | *krampus | 19:35 |
| bauzas | :) | 19:35 |
| bauzas | mriedem: so I was just explaining that Nova AZs are host failure domains | 19:35 |
| bauzas | mriedem: but you know that story | 19:36 |
| mriedem | i tend to forget | 19:36 |
| mriedem | but ok | 19:36 |
| bauzas | so, given Cinder is the only external consumer of Nova AZs, I'd be very happy to know if we still need to provide those to Cinder :) | 19:36 |
| mriedem | yeah, that's what i just said in the ML | 19:37 |
| mriedem | can we deprecate the cinder.cross_az_attach option in nova | 19:37 |
| hemna | mriedem, that https://bugs.launchpad.net/nova/+bug/1454621 looks like a dupe https://bugs.launchpad.net/nova/+bug/1208799 | 19:37 |
| openstack | Launchpad bug 1454621 in os-brick "Multipath device descripter is not deleted while the device pathes are removed after detach last volume form VM on a host" [Undecided,New] | 19:37 |
| openstack | Launchpad bug 1208799 in OpenStack Compute (nova) "after detach vol from VM the multipath device is in failed state" [High,Confirmed] | 19:37 |
| bauzas | mriedem: you're my public voice | 19:37 |
| hemna | both of which should be fixed now that we've switched to os-brick | 19:37 |
| mriedem | hemna: ok i duped 2 against that then | 19:38 |
| scottda | I'll talk to DuncanT about his AZ use cases when he gets back. It sounds like, if there is something Cinder wants for failure domains, it should have a new name to avoid confusion. | 19:39 |
| bauzas | scottda: huge +1 | 19:39 |
| * scottda remembers to schedule a separate Summit session for bike-shedding about names | 19:40 | |
| * bauzas could propose ABAZ = All But AZ | 19:41 | |
| smcginnis | The "Open Mitaka Development" patch has merged. | 19:41 |
| smcginnis | TATAZYLF = These aren't the availability zones you're looking for. | 19:42 |
| scottda | I like that, smcginnis | 19:42 |
| smcginnis | ;) | 19:43 |
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| smcginnis | So missing part of the conversation and just skimming quick - but if nova<>cinder az's were an idea that never materialized and cause confusion - it does seem like we should just deprecate it. | 19:44 |
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| mriedem | ndipanov: can we just deprecate and microversion out boot from volume with source=image? | 19:45 |
| mriedem | seems that causes lots of issues for us | 19:45 |
| mriedem | nova should get out of the business of orchestration | 19:45 |
| guitarzan | mriedem: I wish | 19:45 |
| mriedem | well because now people want to be able to pass the volume type to nova boot | 19:45 |
| mriedem | as a proxy to the cinder api | 19:46 |
| guitarzan | to be fair, wanting volume type is 100% reasonable in that situation | 19:46 |
| hemna | ah yeah, yet another microversion dep :) | 19:46 |
| hemna | scottda, you got that done yet ? | 19:46 |
| scottda | yup | 19:47 |
| hemna | ship it! | 19:47 |
| scottda | And since Mitaka is open, I've un-WIP'ed the spec... | 19:47 |
| hemna | scottda, absolutely no pressure whatsoever. none. zero. | 19:47 |
| jgriffith | mriedem: nova boot from volume creates-volume should die!!!! | 19:48 |
| scottda | hemna: What about my PM? Can we take NOva + Cinder specs for returning VolumeIsBusy to the NOva meeting tomorrow? | 19:48 |
| mriedem | hemna: not a cinder microversion | 19:48 |
| guitarzan | jgriffith: mriedem that makes it official, we should rip it out :) | 19:48 |
| mriedem | hemna: a nova microversion | 19:48 |
| jgriffith | mriedem: it doesn't work in most real world scenarios anyway | 19:48 |
| mriedem | as in before 2.x we deprecate boot from volume with source=image | 19:48 |
| jgriffith | mriedem: you'll hit an RPC timeout on most backends any time you have an image of any significant size | 19:48 |
| mriedem | >= 2.x we fail with a 400 in nova-api | 19:49 |
| jgriffith | mriedem: :) | 19:49 |
| smcginnis | jgriffith: We've hit that. | 19:49 |
| hemna | sweet | 19:49 |
| guitarzan | jgriffith: an rpc timeout? | 19:49 |
| mriedem | jgriffith: yeah so you have to then tweak config settings in nova to account for that, which is also the suck | 19:49 |
| guitarzan | which part of it is inside an rpc call? | 19:49 |
| smcginnis | guitarzan: Takes too long to copy over the image. | 19:49 |
| jgriffith | guitarzan: yeah, the rpc call over to Cinder times out IIRC | 19:49 |
| jgriffith | guitarzan: which makes sense | 19:49 |
| guitarzan | but that's not an rpc call | 19:49 |
| hemna | if only we had image caching to volumes in the backend..... | 19:49 |
| mriedem | nova's making a rest call | 19:49 |
| guitarzan | it's just a rest call, which doesn't timeout | 19:50 |
| mriedem | and then nova polls the status | 19:50 |
| jgriffith | guitarzan: ok.. the rest call times out then | 19:50 |
| smcginnis | Leaves behind crud too if I remember right. | 19:50 |
| guitarzan | ah, I see | 19:50 |
| mriedem | nova has a polling loop in the compute manager and the timeouts are configurable | 19:50 |
| guitarzan | yeah, they added a crazy timeout/poll thing to make it work | 19:50 |
| mriedem | and in liberty at least there was code added to terminate the instance on timeout | 19:50 |
| jgriffith | mriedem: not the last time I looked.. but that's cool if they are now | 19:50 |
| mriedem | *volume | 19:50 |
| jgriffith | mriedem: so ignore me | 19:50 |
| jgriffith | mriedem: do what you like :) | 19:50 |
| mriedem | the polling was in the compute manager for awhile | 19:50 |
| mriedem | the delete on timeout wasn't | 19:50 |
| smcginnis | mriedem: That's right, that's what I hit. It timed out with the default on any decent sized image. | 19:50 |
| mriedem | this is the polling method https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L1393 | 19:51 |
| jgriffith | Openstack... shoving 12 pounds of poop in a 5 pound sack since Grizzly! | 19:51 |
| mriedem | waits 3 minutes by default | 19:52 |
| guitarzan | aww | 19:52 |
| hemna | 3 minutes isn't very long for a big image and a busy iSCSI channel | 19:52 |
| jgriffith | hemna: it's usualy not iscsi FYI | 19:53 |
| jgriffith | hemna: it's almost always the fetch from Glance | 19:53 |
| jgriffith | hemna: combined with the qemu-convert | 19:53 |
| hemna | not the dd ? | 19:53 |
| smcginnis | hemna: Mine never got that far. | 19:53 |
| hemna | doh | 19:53 |
| jgriffith | hemna: the process is fetch from glance --> temp-file---> qemu-convert the tempfile --> dd to volume | 19:53 |
| guitarzan | qemu-convert is worse than dd since it has to do the whole virtual size | 19:53 |
| guitarzan | by dd I mean copy from glance | 19:54 |
| jgriffith | guitarzan: +1, including if you have a 24Mb image and a 100G volume, it zeros out the entire 100G | 19:54 |
| guitarzan | jgriffith: yep, has to | 19:54 |
| hemna | so wouldn't this work if we had the image cache enabled and the image happened to be a cache hit on the backend ? | 19:54 |
| smcginnis | If you can get far enough to have the image cached, then I think it would be quick enough. | 19:54 |
| jgriffith | hemna: Well YEAH!! Why do you think everybody wanted that featuure :) | 19:54 |
| hemna | :) | 19:54 |
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| jgriffith | hemna: and that's also why it's important to use min size and extend the volume | 19:55 |
| guitarzan | yeah, the image cache can be a big win for folks | 19:55 |
| jgriffith | guitarzan: if your backend can do anything with it | 19:55 |
| jgriffith | guitarzan: and as long as the first time you do the create-from-image you're not doing it from nova | 19:56 |
| guitarzan | jgriffith: ok fine, so s/folks/you/ :D | 19:56 |
| guitarzan | jgriffith: true | 19:56 |
| jgriffith | guitarzan: no no... I didn't mean it like that | 19:56 |
| guitarzan | haha | 19:56 |
| guitarzan | yeah, it doesn't help me either :) | 19:56 |
| eharney | i'm pretty sure we can optimize qemu-img convert to write sparse data like we recently did in other paths with dd, if writing the whole volume is an issue | 19:56 |
| jgriffith | guitarzan: I meant it as we shouldn't say "problem solved" | 19:56 |
| guitarzan | jgriffith: yeah, no question | 19:56 |
| jgriffith | eharney: ya, if we could figure out how to do that it would be a help for sure | 19:56 |
| jgriffith | eharney: but when I looked my understanding was you couldn't do that | 19:57 |
| jgriffith | eharney: anyway... there's still the fetch from Glance too | 19:57 |
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| jgriffith | all good things to look at | 19:57 |
| jgriffith | eharney: the other thing I wanted to do was change the process to create a minimal sized volume and then extend it | 19:58 |
| guitarzan | jgriffith: I'm not sure we want cinder in the business of resizing a fs | 19:58 |
| jgriffith | eharney: but it became rather ugly and hacked WAYYY more code than I was comfortable with | 19:58 |
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| jgriffith | guitarzan: well... for a create from image it's ok | 19:58 |
| jgriffith | guitarzan: because it's not actually resizing the FS | 19:59 |
| jgriffith | guitarzan: know what I mean? | 19:59 |
| guitarzan | jgriffith: I don't follow | 19:59 |
| guitarzan | no, I don't get it :) | 19:59 |
| eharney | this sounds familiar but i feel like i'm missing why that's beneficial | 19:59 |
| eharney | or forgot | 19:59 |
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| jgriffith | guitarzan: if the raw glance image is 20MB, I can safely write it to a 20MB volume | 19:59 |
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| guitarzan | you're going to have superblocks out there in your etended volume that need written no? | 19:59 |
| jgriffith | guitarzan: and avoid dd'ing zeros to the remaining blocks (say a 200G volume) | 20:00 |
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| jgriffith | guitarzan: then extend the volume to whatever size I want.... | 20:00 |
| jgriffith | BUT | 20:00 |
| jgriffith | that might be a non-issue as eharney pointed out by sparse copy in dd now | 20:00 |
| jgriffith | guitarzan: ? It's an image | 20:00 |
| guitarzan | yeah, if you're writing to a zero device, like lvm thin, we should be able to hack up qemu to do what we want | 20:00 |
| jgriffith | It's not really a FS | 20:00 |
| guitarzan | jgriffith: I know, that's what I'm not following | 20:01 |
| guitarzan | if you want to boot it, it's a filesystem | 20:01 |
| guitarzan | and if the raw image is 20MB, then it's a 20MB filesystem | 20:01 |
| jgriffith | guitarzan: but cloudinit does the fs resize stuff | 20:01 |
| guitarzan | I don't know anything about that :) | 20:01 |
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| guitarzan | isn't that after boot? | 20:01 |
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| guitarzan | I mean maybe it does work | 20:02 |
| jgriffith | guitarzan: it certainly works | 20:02 |
| guitarzan | I'm just not quite clear on all the pieces | 20:02 |
| jgriffith | extend is safe on image volumes... reduce.. not so much :) | 20:02 |
| guitarzan | sure | 20:02 |
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| guitarzan | I was just pointing out that someone has to extend it, and if this cloudinit thing does that, that's pretty great | 20:02 |
| guitarzan | I've never been clear on what cloudinit even is to be honest | 20:03 |
| jgriffith | guitarzan: well, it does it with any image already | 20:03 |
| jgriffith | guitarzan: for example you say nova boot flavor 100 vs 200 | 20:03 |
| guitarzan | I thought it was nova itself that did that | 20:03 |
| jgriffith | one has a root disk of 1G the other 20G | 20:03 |
| jgriffith | it's the same concept | 20:03 |
| guitarzan | yeah, I'm not disagreeing with that part either | 20:04 |
| jgriffith | guitarzan: well.. still it will do the same thing with an external volume | 20:04 |
| jgriffith | anyway | 20:04 |
| jgriffith | I should shut up now :) | 20:04 |
| guitarzan | it will? cool | 20:05 |
| guitarzan | I can only plead ignorance | 20:05 |
| jgriffith | guitarzan: nothing wrong with that | 20:05 |
| jgriffith | guitarzan: now... if you want to talk about multi-attach, I can go on and on about why I was totally wrong on that one and we shouldn't do it :( | 20:05 |
| guitarzan | haha | 20:05 |
| guitarzan | so right now if you copy image to volume | 20:06 |
| guitarzan | 20 gig image, 100 gig volume | 20:06 |
| smcginnis | jgriffith: OK, you got my interest. | 20:06 |
| guitarzan | then boot it | 20:06 |
| smcginnis | jgriffith: Why no multiattach? | 20:06 |
| guitarzan | nova won't extend it right now, right? | 20:06 |
| jgriffith | guitarzan: it should I thought | 20:06 |
| jgriffith | guitarzan: but here's the thing... regardless if it doesn't | 20:06 |
| guitarzan | hmm, interesting | 20:06 |
| guitarzan | I do agree that it could | 20:06 |
| jgriffith | guitarzan: you can do an fdisk and you'll see "whatever" size the volume is | 20:06 |
| guitarzan | but I'm not sure how it knows whether or not it should | 20:06 |
| jgriffith | smcginnis: because it's misleading | 20:07 |
| jgriffith | smcginnis: without a good shared/clustered FS it's flat out disastrous | 20:07 |
| smcginnis | jgriffith: Oh, yeah. I've seen that one before. | 20:07 |
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| smcginnis | "WHat do you mean I can't just write from both?" | 20:07 |
| eharney | people using multi-attach need to understand those kinds of things... it's not exactly something that's specific to Cinder | 20:08 |
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| jgriffith | smcginnis: and if we don't have STRONG documentation and a recommended/tested FS it's my opinion that we shouldn't do it. | 20:08 |
| jgriffith | eharney: I thought that too.... | 20:08 |
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| jgriffith | eharney: until I received not one but 2 support calls in the last month on the topic of "why aren't my files showing up" | 20:08 |
| jgriffith | eharney: it seems that once it landed in Cinder some folks hacked things up a bit to make it work in Nova on their own :( | 20:09 |
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| smcginnis | jgriffith: It does have its use cases though. But their is some knowledge required. | 20:09 |
| eharney | well i don't think we can just skip implementing multi-attach because people do crazy things... | 20:09 |
| jgriffith | eharney: I told them they should look at Gluster :) | 20:09 |
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| jgriffith | eharney: sure | 20:09 |
| hemna | smcginnis, yup. | 20:09 |
| smcginnis | I wonder if the docs team allows the <blink> tag? :) | 20:10 |
| jgriffith | eharney: and I'm certainly not objecting to any patches or anything | 20:10 |
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| hemna | smcginnis, :) | 20:10 |
| jgriffith | eharney: just stating my opinion combined with a fact in channel here... that's all | 20:10 |
| jgriffith | eharney: I don't believe I said we should stop it. I believe what I said was "I was wrong and it wasn't such a good idea", that's all | 20:10 |
| eharney | yeah, i know | 20:11 |
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| jgriffith | eharney: mostly because when it first came up I was very vocal that is was going to be the greatest thing since sliced bread | 20:11 |
| guitarzan | also, can we have a big off switch in the conf file? :) | 20:11 |
| eharney | i just kinda worry about the warning label thinking | 20:11 |
| jgriffith | eharney: fair enough | 20:11 |
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| guitarzan | because the 56th support ticket I get I'm turning it off :) | 20:11 |
| eharney | after some folks explained to me a bit ago that they thought crash consistent snapshots needed a big warning label too | 20:11 |
| jgriffith | eharney: honestly I plan to stay out of it and certainly won't cause trouble | 20:11 |
| jgriffith | I promise! | 20:11 |
| guitarzan | it's leading to a lot of interesting discussion about the attach/detach code paths though | 20:12 |
| jgriffith | eharney: oh... sigh, yeah, that whole thing | 20:12 |
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| openstackgerrit | Eric Harney proposed openstack/cinder: LVM: Make sparse_copy_volume private, use for capabilities https://review.openstack.org/226989 | 20:55 |
| openstackgerrit | Eric Harney proposed openstack/cinder: Enable sparse image conversion https://review.openstack.org/226990 | 20:55 |
| hemna | scottda, looks like we might be able to just use novaclient's api_versions.py or should at least. | 21:00 |
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| ndipanov | mriedem, not sure I get what you mean | 21:12 |
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| ndipanov | ah volume with source=image | 21:12 |
| ndipanov | ah well | 21:12 |
| ndipanov | it's really a shortcut | 21:13 |
| ndipanov | I'm ok with it going away | 21:13 |
| smcginnis | eharney: UT failures in those patches. | 21:13 |
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| mriedem | ndipanov: yeah, source=(image/blank/snapshot) | 21:13 |
| mriedem | ndipanov: basically anything that makes nova proxy a volume create call to cinder | 21:14 |
| mriedem | ndipanov: but at least one person said in the ML that they don't want to ever lose that b/c they like the orchestration nova is doing | 21:14 |
| smcginnis | mriedem: Doesn't seem like the correct place for orchestration to me, but I suppose folks are used to it now. | 21:15 |
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| mriedem | smcginnis: i agree | 21:15 |
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| mriedem | smcginnis: so our solution has just been an act of attrition instead http://docs.openstack.org/developer/nova/project_scope.html#no-more-api-proxies | 21:17 |
| smcginnis | mriedem: Probably the best course, given the situation. :| | 21:17 |
| mriedem | which is why we don't want to add volume_type to the boot from volume request for nova | 21:17 |
| smcginnis | mriedem: Good to see it's documented out there! | 21:18 |
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| xyang1 | mriedem: good to have operators input if you want to get rid of that | 21:20 |
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| mriedem | xyang1: yeah i posted to the ops list | 21:21 |
| mriedem | xyang1: we can revert if there is a problem | 21:21 |
| xyang1 | mriedem: great | 21:21 |
| xyang1 | mriedem: I wonder if people want more not less | 21:21 |
| mriedem | more complex stuff that doesn't have a clear use case? | 21:22 |
| mriedem | i'm sure they do :) | 21:22 |
| mriedem | i don't | 21:22 |
| xyang1 | mriedem: since nova has knowledge of storage and network | 21:22 |
| xyang1 | mriedem: :) | 21:22 |
| mriedem | lots of people would like nova to orhestrate more things | 21:22 |
| mriedem | but it's usually half baked and not tested well so we have lots of technical debt | 21:22 |
| mriedem | and in 3 years you have someone asking what it was added for in the first place | 21:22 |
| xyang1 | mriedem: that az thing seems to be left out because of the split | 21:23 |
| mriedem | sort of yeah, but that cross_az_attach option was added in grizzly, and nova-volume wasn't in grizzly | 21:24 |
| xyang1 | mriedem: I didn't even know that one, sorry | 21:24 |
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| mriedem | don't feel bad, no one does :) | 21:25 |
| xyang1 | mriedem: :) | 21:25 |
| xyang1 | mriedem: good to remove it, probably | 21:25 |
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| guitarzan | mriedem: alaski and I both fought this battle here at rax and lost... it'll be great if openstack just takes it out for us :) | 21:31 |
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| mriedem | guitarzan: removing that option? | 21:32 |
| guitarzan | mriedem: sorry, I mean the source=image stuff :) | 21:32 |
| mriedem | oh | 21:32 |
| mriedem | yeah, that's a harder change | 21:32 |
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| openstackgerrit | xing-yang proposed openstack/cinder: Check sio_storage_pools in check_for_setup_error https://review.openstack.org/227028 | 22:00 |
| hemna | the orchestration stuff embedded in nova seems problematic | 22:01 |
| hemna | in the case of booting a volume from an image, an external orchestration that's not bound by rpc timeouts would be better suited | 22:01 |
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| xyang1 | Is it time to remove -2 now since Mitaka is open? Or do we still need to wait? | 22:12 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Small optimization in Block Device driver https://review.openstack.org/220561 | 22:14 |
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| xyang1 | jungleboyj: :) | 22:16 |
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| openstackgerrit | Walter A. Boring IV (hemna) proposed openstack/cinder-specs: Remove Volume Manager Locks https://review.openstack.org/149894 | 22:28 |
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| patrickeast | tsekiyama: hemna: whats the latest with https://review.openstack.org/#/c/196482/ ? | 22:51 |
| patrickeast | is it stuck on the xen server ci? | 22:51 |
| patrickeast | or something else? | 22:51 |
| tsekiyama | patrickeast: I was trying to make xenserver CI recheck. but looks like failed | 22:52 |
| hemna | patrickeast, I haven't looked at it in a few days. | 22:53 |
| tsekiyama | s/xenserver/XenProject/ | 22:53 |
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| hemna | tsekiyama, what did we end up resolving about my questions in patchset 5 ? | 22:55 |
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| tsekiyama | hemna: I have added a code to lookup wwn based device name | 22:57 |
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| tsekiyama | hemna: the wwn is fetched from connection_info['data']multipath_id | 22:57 |
| tsekiyama | ['multipath_id'] | 22:57 |
| hemna | hrmm yah the multipath_id | 22:57 |
| hemna | which might go away | 22:58 |
| hemna | also if friendly names are enabled w/ multipath then we'll never get a /dev/mapper/<WWN> entry :( | 22:59 |
| tsekiyama | hemna: That would be problematic only when the operator changes the multipathd settings when they update nova, right? | 23:01 |
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| hemna | tsekiyama, well, some distros default friendly names being on | 23:02 |
| hemna | :( | 23:02 |
| hemna | friendly names = evil | 23:02 |
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| tsekiyama | hemna: what does connection_info['data']['device_path'] return when friendly names are enabled? Doesn't it point the valid multipath device? | 23:08 |
| hemna | tsekiyama, for FC devices, it's documented here: https://goo.gl/Xqx1Tx | 23:09 |
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| hemna | I have to run (soccer coaching) | 23:10 |
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| tsekiyama | hemnafk: I'm confused.. I'm starting to think encryption+FC+multipath haven't been working if Cinder was returning '/dev/mapper/*' previously. | 23:51 |
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| tsekiyama | hemnafk: because it conflict with encryption device name nova was going to create. | 23:52 |
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| tsekiyama | hemnafk: If so, we don't have to care about upgrading from non-working version.. | 23:55 |
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