Monday, 2016-05-02

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openstackgerritAvishay Traeger proposed openstack/cinder: List manageable volumes and snapshots
openstackgerritAvishay Traeger proposed openstack/cinder: Map volume/snapshot manage extensions to v3
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openstackgerritDavanum Srinivas (dims) proposed openstack/cinder: [WIP] Testing latest u-c
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openstackgerritchandan kumar proposed openstack/cinder: Also package tempest_tests
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openstackgerritchandan kumar proposed openstack/cinder: Also package tempest_tests
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openstackgerritTom Barron proposed openstack/cinder: Tests: Fail if oslo.versionedobjects issues Invalid UUID warnings
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openstackgerritMerged openstack/cinder: Tests: Fail if oslo.versionedobjects issues Invalid UUID warnings
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anteayahello cinder channel14:51
anteayaI know the group has selected a time for your next mid-cycle14:52
anteayacould some kind person add that info to
anteayafor the benefit of folks such as myself?14:52
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smcginnisanteaya: Will do, thanks for the reminder.14:53
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anteayasmcginnis: thank you14:53
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scottda hemna morning15:06
scottdasmcginnis: I've discovered a problem with getting hotel rooms in Fort Collins the week of the seems there's some huge state-wide softball tournament and all rooms are pretty booked.15:07
scottdaNot just one hotel, but probably all. We'd likely have to either move the date or move the location. Sorry about that.15:08
anteayascottda: whoa15:09
anteayaso what was the backup location, rochester or dublin?15:09
scottdaI think it was raleigh?15:09
smcginnisscottda: Ruh roh.15:09
smcginnisanteaya: Second choice was Dublin, followed by Raleigh.15:10
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anteayacan we check for hotel availablity in dublin before switching?15:10
smcginnisI'll see if I can export the survey results and publish them.15:10
smcginnisSimon also pointed out Red Hat summit was that week, so we could also consider moving it to a different time if that's better.15:11
SwansonAdded failover_host failback to the Dell SC driver while all's y'all were out gallivanting around Texas.  If anyone wants to take a look ...
scottdaI'm told a different week would be fine, just this week has 100's of softball teams coming for this thing.15:11
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scottdasmcginnis: What was 2nd choice week?15:12
smcginnisscottda: Just in Fort Collins, or will it be that whole area?15:12
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scottdasmcginnis: It will be the whole area. State-wide, apparently15:12
smcginnisscottda: I think R-10 was the next week, right after Nova's/15:12
diablo_rojoJul 25-2915:12
anteayathat wouldn't work for me15:12
anteayabut in any case, let me know what you decide15:13
anteayascottda: thanks for checking the hotels15:13
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smcginnisscottda: Yeah, thanks for checking so quick. If we would have found out later it would have been painful rescheduling flights.15:14
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scottdaJul25-29 would work for the hotel (12 rooms is what I asked for)15:15
smcginnisI've sent out a notice to the mailing list to hopefully stop anyone before they book.15:15
smcginnisSorry if anyone has already jumped on that.15:15
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smcginnisscottda: OK, great to know.15:15
diablo_rojoSo we are still doing Ft. Collins, but for R10?15:15
smcginnisdiablo_rojo: TBD15:16
smcginnisR10 or different location.15:16
scottdasmcginnis: They said that deal would not disappear today, but we should act as fast as possible.15:16
smcginnisscottda: Pressure sales! :)15:16
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anteayascottda: you can book and then cancel15:16
anteayawho is the dublin contact?15:16
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scottdaanteaya: DuncanT is, but he's not really local anymore.15:17
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scottdaanteaya: My team is in Galway, and the Dublin location was going to be HPE, so I could help with that....15:17
diablo_rojoanteaya: And he's on vacation in Austin still15:17
anteayayes that is true15:17
anteayadiablo_rojo: ah15:17
diablo_rojoshooting more guns today I think lol15:18
anteayascottda: could you take a quick peek at hotels in dublin for the last week of june?15:18
anteayascottda: just to see if they also are have a softball tournament the same week15:18
scottdaanteaya: I'll query some Irish locals as to holidays...15:18
anteayadiablo_rojo: apparently that is what you do in the states15:18
anteayascottda: thank you15:18
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diablo_rojoanteaya: I guess so; Thursday wasn't enough for him.15:19
anteayadiablo_rojo: I'm interested in Duncan's dancing, not so much his other hobbies15:19
scottdaIt's a bank holiday in Ireland today, so might take >24 hours for details15:20
anteayascottda: understood15:21
anteayascottda: thank you15:21
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ildikovscottda: jgriffith hemna mriedem1: hi15:29
scottdaildikov: HI15:29
ildikovI hope everyone had a safe trip back home :)15:29
scottdaAnd you as well.15:29
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ildikovI wanted to ask when we could schedule the Google Hangout we planned15:30
ildikovscottda: yeap, it was quite smooth, thanks, I'm only ruined by the jet lag :)15:30
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ildikovso I thought I might try with Wednesday our regular meeting day, but with a slightly earlier slot15:31
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scottdaildikov: I've a conflict Wed UTC 15:00 -> and most days I conflict at UTC 13:00 , other than that  pretty flexible15:31
ildikovmriedem: Thursday works for me as well15:32
smcginnisI'm fairly flexible this week.15:32
scottdaThursday works for me15:33
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ildikovok, Thursday is fine for me as well this week from 1600UTC or from 1700UTC in general15:34
ildikovhemna: jgriffith: ?15:34
scottdahemna: Those time's ildikov is proposing are Thurs 0900 -> PDT (since you are UTC -7:00)15:35
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hemnathis thursday at 9am?15:36
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ildikovif we want this as a series than more 10am PDT, but this week I can make it at 9amPDT, I have other meetings before15:37
hemnaI'm fine with 9am15:37
ildikovhemna: cool15:37
hemnaI'm just updating my resume and stuffs like that at this point anyway15:37
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anteayahemna: go you \o/15:38
ildikovhemna: I understand, although I hope you're available at least for answering questions as well15:38
ildikovhemna: I will not force you to take action points, or at least not yet :)15:39
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ildikovmriedem: it seems that who's around currently is available at 1600UTC, does it look ok for you as well?15:41
ildikovmriedem: on Thursday15:41
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scottdahemna: Is your solution for When-to-call-Brick-volume_detach that uses existing Nova info written down anywhere?15:44
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scottdahemna: I'm not sure why we haven't considered this as an alternative, but it seems to amount of changes and risk.15:44
jgriffithhemna: smcginnis I'm open I think15:45
scottda"seems to amount" -> "seems to be the solution with the least amount"15:45
hemnawritten down?  I may have mentioned the idea in the ML a while back15:46
hemnaat this point though, from our discussion on Friday with the Nova team, they just seem over the whole idea of Multi-attach all together.15:46
hemnathe virtual volume idea seems like a nightmare for users, IMHO15:47
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hemnaand horizon for that matter.15:47
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smcginnishemna: +115:48
hemnawould it make sense15:48
scottdahemna: Yeah, none of that stuff is needed, nor do I think it has anything to do with multi-attach.15:48
smcginnisI can't come up with a visualization for that that wouldn't confuse the hell out of end users.15:48
hemnato add a new API into os-brick that handles the detach issue?15:48
smcginnisMuch less command line semantics.15:48
scottdahemna: But your simple algorithm solves all problems, as far as I can see.15:48
ildikovjgriffith: do you mean that you're available for the proposed slot this Thursday?15:48
scottdahemna: It was to use Nova's info on whether a volume had multiple attaches to the same host or not, and use that to determine when to call os-brick to disconnect.15:49
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ildikovhemna: scottda: didn't we say that we can count the number of attachments on the same host and if we have a single target call disconnect_volume only for the last attachment on the host?15:49
hemnaif each attachment entry had the host as well as the instance_uuid, I think we can determine the detach15:49
jgriffithildikov: correct15:49
hemnaw/o any nova info15:50
ildikovjgriffith: cool, tnx, I will send out a Hangout link with the proposed time to the ML then15:50
scottdahemna: Or, it could be determined by Nova now, without any changes other than a method to figure out whether there are >1 or =1 attachments to the Nova host for this volume, at least if I understood your proposal for this.15:51
ildikovscottda: theoretically Nova should be able to figure out when to call disconnect15:51
scottdahemna: So, from a pragmatist standpoint, I'd think we'd be better off coding up that algorithm and seeing what people think. It means no changes to the API, no need to check microversion, no waiting for anything to merge in Cinder, just ~20 lines of code in Nova.15:52
ildikovscottda: except that we still need to know that the driver shares the connection or exports new target each and every time15:52
hemnathe only reason I suggested a new os-brick API, is to eliminate the need for nova changes, other than calling the new API15:52
hemnaas they seem very resisitant to change15:52
scottdaBut Nova would need to change to call this new Cinder API, and add support for checking Cinder microversions.15:53
hemnaos-brick API15:53
hemnanot Cinder15:53
hemnahave cinder save the host in the attachment entry15:53
ildikovhemna: what would be needed in brick to make it possible?15:54
hemnathen have nova pass the volume attachments at os.brick.connector.disconnect_volume() time.15:54
scottdaildikov: I thought hemna 's solution would allow Nova to calculate whether there driver exported a new target each time with existing info...15:54
hemnanova wouldn't have to do anything then, I thinks15:54
hemnaI can try and code it up and put a WIP up15:54
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hemnait might make more sense than my feeble attempt at explaining it.15:54
ildikovscottda: if that means calling initialize_connection at detach time I don't like that15:55
scottdahemna: That'd be great. Or even some pseudo-code to help us discuss.15:55
hemnaI think we should code up a POC for the removal of initialize_connection at detach time as well15:55
ildikovhemna: scottda: yeap that might help as I think I have another proposal in mind than what you're discussing at the moment15:55
hemnaI think that's a bug IMHO15:55
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ildikovhemna: for live migration you mean?15:56
hemnaildikov, yes15:56
ildikovhemna: cool, I agree that's better to fix that in Nova15:56
scottdaBut live migration problem is separate from multi-attach. I think it's best to keep them separate .15:56
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hemnawell it is separate, but it causes issues with multi-attach solutions as well15:57
scottdaAll we need for multi-attach is to know when Nova must call os-brick to detach the volume from the physical host, IIUC15:57
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hemnajgriffith's POC patch would have worked if we eliminate the initialize_connection call at detach time15:57
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ildikovscottda: cleaning up live migration helps the multi-attach case as well, otherwise you're right it is a separate issue15:58
scottdahemna: One day a few weeks back, you discussed an algorithm here in IRC that would allow Nova to loop through info (from BDM? or DB call to something like get_volume_by_host?) that could make the determination soley on this existing info, I think...15:58
hemnascottda, yah that would work15:59
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hemnaI'm just thinking of other ways15:59
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scottdaSo that seems like a simple solution that might have a chance of getting in. Other solutions start to grow in complexity, and I think that means they are much less likely to get merged.15:59
hemnathe one thing about the virtual volume thing that was nice, is that nova didn't care and wouldn't need to care about single or multi-attach16:00
hemnait just worked16:00
scottdaThere are many ways of fixing this. But that is part of the problem :)16:00
hemnamaybe there is another way to do that behind the scenes/fake it.16:00
scottdahemna: Yeah, maybe. Using some new column in Cinder DB for 2nd and subsequent attaches that map to the original volume, or something like that.16:01
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ildikovI understood the virtual volume thing like we ask the user to create the attachment_id first and then pass it at attach/detach time16:02
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scottdaThat virtual volume thing is such a departure from the existing user-facing workflow that it's pretty much never going to happen.16:03
scottdaIf we did something that was invisible to the user, it might be viable.16:03
hemnascottda, yah16:03
hemnathat's what I'm trying to come up with16:03
ildikovscottda: yeah, the more I think about it the less realistic it looks like16:03
hemnamaybe reserve returns a new volume id16:04
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hemnaand that volume id is a hidden virtual volume16:04
ildikovscottda: +1 for invisible solution16:04
hemnathen nova just uses that volume id for everything else16:04
hemnafeels hackish16:04
hemnaand I'm sure other places in nova will have to change to accommodate it16:05
hemnahow to change nova without changing nova.......16:05
smcginnisFull survey results:
smcginnisNo easy way to export info from SurveyMonkey without "Premium".16:06
scottdahemna: I'm vague on details, but it seems we should be able to do something with Cinder DB to track 2nd+ attachments of the same volume, and then use that to deal with detach scenarios on the Cinder side. Maybe requires a new multiattached table, or something...16:07
hemnascottda, well, we already track N attachments per volume.16:07
hemnawe have a volume_attachment table16:08
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hemnathat has an entry for every time a volume is attached to an instance_uuid and/or host16:08
hemnaand what state it's in16:08
scottdaSo, we effectively have a source for reference counting.16:08
hemnastandard normalized table16:08
hemnathat's why if the host was populated in there, we would know when to detach16:08
openstackgerritKendall Nelson proposed openstack/cinder-specs: Dynamic Reconfiguration
hemnaNova's main objection to multi-attach is the idea that nova has to manage volume state16:09
hemnadue to knowing when it can do an attach for a volume or not, and what states are allowed16:09
hemnain-use -> attaching -> in-use16:09
hemnain-use -> detaching -> in-use16:10
hemnain-use -> detaching -> available16:10
scottdaNova will always need to know about multi-attach to put the no_cache flag in the xml. This is for any clustered file system to do proper flushing.16:10
hemnathat's easy AFAIK16:10
hemnathe volume object has the multi-attach flag on it16:11
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ildikovscottda: I have a check for that in my current code on review:
scottdaNova always has managed volume state, so there's nothing new with multi-attach. IF Cinder moved the state changes in os-reserve to the path of initialize_connection, we could test-and-set the state there, and just return exception or HTTP error is state was incorrect. That entire call to reserve could go away, as could most of the state management.16:14
hemnaI'm not sure what the objection is to the state stuff really16:14
hemnathe nova API calls check_attach() directly16:14
hemnawhich it should16:14
ildikovscottda: I know it's slightly arguable where the info is coming from but that's just an implementation detail by the end of the day16:14
scottdaWe could make state stuff go away, but that's changing the entire API. I started down this path with a spec...16:14
hemnathat should do all the checking and failing if need be16:14
ildikovhemna: I added the changes for that in check_attach in the already existing code it's really not a big change16:15
hemnaildikov, yah.   I think I added changes there in my first few attempts as well16:15
ildikovhemna: the only thing is that if you try to use it for swap volume you recognise that the Nova API is slightly inconsistent16:15
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scottdaYeah, everything is good for multi-attach, except for Nova knowing when to call os-brick. Other stuff is in or ready for patches to be merged.16:16
hemnathe problem with the nova side is that I think it introduces races16:17
hemnaI think that code should be in Cinder IMHO16:18
hemnaand part of reserve16:18
scottdaYeah, that race is already there...16:18
hemnascottda, I think this is one of the things we discussed with jgriffith in Ft. Collins a year ago16:19
scottdahemna: Yes, and I've written a couple versions of specs to fix this...16:19
hemnaIf nova could simply call reserve16:19
hemnareserve would pass/fail16:19
ildikovyou mean skip further checks in Nova?16:19
hemnaCinder should be the source of truth of if an action can be take on a volume or not16:19
hemnaa user of the cinder API shouldn't ever have to be doing this stuff IMHO16:20
scottdaOr Nova should just call cinder.smart_attach() , which sets state to attaching or fails, and then proceeds with intitialize_connection, etc.16:20
scottdaOut-of-date spec:
hemnaThe very first thing that reserve should do, is to put the volume in 'ing' state, then do the checks if it can do an attach.  if it can't, set the volume back to the previous state, and then fail the reserve.16:21
hemnaif it can attach, then volume is in 'attaching' and return true.16:21
hemnanova continues16:21
hemnathis can be done for both single or multi16:21
hemnaand nova simply doesn't care at all.16:21
hemnathe check_attach and check_detach shouldn't be in Nova IMHO16:21
hemnare: state checking/management16:22
hemnathat's Cinder's job really.16:22
scottdahemna: Agreed16:22
hemnathat would accomplish the same thing that dan wanted16:22
hemnare: nova doesn't want/need to deal with cinder volume state management16:23
ildikovTBH honest I've never really understood the magic with the different kinds of states checking in Nova16:23
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scottdaWorse still, Nova checks state before calling reserve , and state could change in between16:23
ildikovhemna: +116:23
hemnascottda, exactly, that's the race condition I was mentioning earlier16:23
hemnathis seems like a 'bug'16:23
scottdahemna: Yes, and I think we(you) tried to fix as a bug...16:23
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hemnawe can microversion this change16:24
ildikovhemna: scottda: do you know where this state check in Nova originates from?16:24
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scottdahemna: Just but the call to reserve() into a try: block, and get rid of Nova state checks altogether.16:24
hemnaand if we are less than the microversion change, then nova doesn't support multi-attach and it just does what it does today.16:24
scottdaildikov: I think from the nova api call to volume-attach16:24
hemnaotherwise, the state checks live in reserve16:24
hemnaon cinder side.16:24
ildikovscottda: I'm happy to do that part if we can agree on this on Thursday16:24
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scottdaildikov: But is this part of multi-attach or part of cleaning up the nova-cinder API?16:25
ildikovscottda: hmm, ok, I asked to see whther there's some more reason behind than history, but I would guess no16:25
hemnascottda, I think this is 2 birds w/ 1 stone16:25
hemnawe fix a race condition with nova -> Cinder16:25
hemnaand it allows multi-attach16:25
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hemnaw/o Nova knowing it.16:25
ildikovscottda: I would do it as part of a clean up especially if you have a race condition bug reported for it16:26
hemnaand the other part16:26
hemnais simple16:26
scottdahemna: It does not solve the "when to call os-brick to detach" issue, unless I'm missing something.16:26
hemnanova checks the multi-attach flag on the volume object16:26
hemnaand sets the cache off16:26
hemnaand at detach, we can do 1 of 2 things16:26
ildikovscottda: and as hemna says then move forward with multi-attach just because we can, same for fixing live migration16:26
hemnahave nova do the work of determining if it should call os-brick.disconnect_volume16:26
hemnaor change the brick API16:26
hemnaand nova just passes the attachments into it.16:27
hemnasmall changes really.16:27
hemnathere, we just cured cancer.16:28
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hemnawant me to write up a spec ?16:31
hemnaor just hack some code?16:31
hemnahacking code is more fun16:31
ildikovhemna: hacking code for which part?16:32
hemnathe cinder changes16:32
hemnachanging reserve16:32
ildikovhemna: as we told that that's a kinda race bug, I think you can hack code, I can do the Nova side and if it turns out not to be a bug fix, but still working we can cover it with a spec16:34
ildikovthe only thing we need to keep in mind is that we need an updated and accepted spec for multi-attach in Nova, for which I have a document uploaded, but it does not cover the current state as we're not in an agreement yet16:35
scottdaildikov: hemna Race bug(s):
openstackLaunchpad bug 1499012 in OpenStack Compute (nova) "Nova and Cinder get desynced on volume attachments" [Undecided,Confirmed]16:35
ildikovdo you see any other changes on Nova side that would require a spec rather than a bug report?16:35
openstackLaunchpad bug 1457359 in OpenStack Compute (nova) "race condition in quick detach/attach to the same volume and vm" [Undecided,Expired]16:36
ildikovscottda: cool, thanks16:36
ildikovscottda: I guess we can link them to Cinder as well16:36
scottdaildikov: Note that they are not newly filed. The issue has been around, and keeps popping up....16:36
scottdamaybe also this:
openstackLaunchpad bug 1335889 in OpenStack Compute (nova) "Race condition in quickly attaching / deleting volumes" [High,Confirmed] - Assigned to zhaolihui (zhaolh)16:37
ildikovscottda: having three bug reports to the same issue looks like a good reason to finally fix it16:39
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scottdaildikov: I cannot guarantee they all have this same root cause, but at least 1 of them does.16:41
ildikovscottda: the old one describes the issue of volumes left behind in attached state after deleting VMS16:42
ildikovscottda: I cannot tell at this point if we change how reserve behaves it will help with having this situation way less than today16:43
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ildikovscottda: the middle one looks more like a Nova Cells issue, but I'm not an expert on how that works TBH16:53
openstackgerritchandan kumar proposed openstack/cinder: rename tempest_tests to cinder_tempest_plugin
ildikovscottda: anyway, it should be fine for documenting the attempt of trying to fix reserve and remove check_attach and check_detach from Nova16:59
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ildikovscottda: I think someone maybe Nikola was pretty much against changing check_attach during the last cycle due to plans for removal17:00
ildikovscottda: but let's see how it goes this time17:00
cFoutswell there goes that one17:02
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Swansongo with st1myPassAle17:09
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jgriffithhemna: scottda I'm sort of confused17:48
jgriffithhemna: scottda I can fix that anyway, just by adding that single call "safe_to_disconnect"17:49
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jgriffithhemna: scottda I can't figure out how to make the "virt" volume idea work without being a train wreck for the user17:50
hemnajgriffith, yah same here.  I don't care for the virtual volume idea either.17:51
scottdajgriffith: I agree. The virt volume thing is a no-go.17:51
hemnait's a mess for users.17:51
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hemnaI think I have a solution17:51
hemnajust have to hack it up17:51
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smcginnisAwesome if we can start talking around (semi-)working code, other than abstract concepts.17:52
jgriffithhemna: ok, well let me know if you're doing it or not so I don't waste time on what I had going17:52
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jgriffithI still don't understand why this is so hard.  I have a solution that works, and it's relatively small code change with no changes to existing API's but whatevs17:53
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smcginnisjgriffith: Was that the patch you had out there?17:55
hemnathere are a lot of moving parts on the Nova side17:56
hemnaI'd like to tidy all of that garbage up17:56
smcginnisjgriffith: Was looking for that, but the only open ones I see are for SolidFire.17:56
jgriffithsmcginnis: a mix of that and what I proposed in the ehterpad on the flight home :)17:56
hemnawhich is why I mentioned working on removing the initialize_connection call at detach time17:56
smcginnishemna: That's definitely a plus.17:56
hemnaanyway, I have nothing to do other than looking for a job....17:56
hemnaso, hacking code is more fun17:57
jgriffithhemna: sure, but that's the problem and why I abandoned17:57
jgriffithhemna: I think that trying to fix it all in one mega patch is a really bad idea17:57
hemnait's a multi patch process IMHO17:57
jgriffithhemna: as opposed to planning for it and designing it in as multiple small patches17:57
hemna2 of which I think are 'bugs'17:57
hemna1) removing initialize_connection at detach time in Nova17:58
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ildikovjgriffith: definitely +1 for the step by step approach17:58
jgriffithNo sense in all of us running off doing our own thing, I'll just let you fix it up since you're working up code too17:58
hemna2) fixing the race condition in Nova during attach (volume fetch, check_attach, reserve)17:58
jgriffithI was happy enough to work on it but now that there seems to be multiple side efforts I don't want to just cause confusion17:59
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ildikovjgriffith: it is also easier to share the work on this if we can do it in smaller patches, we just need to agree on the steps IMHO17:59
hemnaildikov, +117:59
hemnafwiw, even the Nova guys couldn't agree on how to 'fix' the initialize_connection issue18:00
hemnaso, I think at this point, put up some code18:00
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ildikovhemna: there are a few bug reports that are more or less related to that race condition, so that should be enough to do it as a bug fix and a prep for multi-attach at the same time18:00
ildikovthe only thing I would like to see clearly is that which change we need a Nova spec for and/or what we need to capture in the multi-attach one18:02
ildikovas currently I don't have an approved one for Newton, so we should figure that out before the deadline18:02
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ildikovI hope we can check hemna's diagrams on the Hangout this week and we can also have a cleaner picture what is that we really need to fix and after that we can go and have code up for review18:03
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ildikovbut personally myself I could use I could use a big picture as I felt that we went down to a few rabbit holes by concentrating particular code snippets18:04
ildikovanyway, my 2 cents :)18:04
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scottdaildikov: +1 to big picture.18:06
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nikeshmsmcginnis: hi18:29
smcginnisnikeshm: Hey!18:30
nikeshmregistered some bps, if you get time, please look
smcginnisnikeshm: Will do, thanks.18:31
nikeshmsmcginnis: thanks18:31
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mtaninosmcginnis: hi,18:47
smcginnismtanino: Hi18:47
mtaninosmcginnis: May I have few min to talk about the bug/1531711 ?18:48
openstackLaunchpad bug 1531711 in Cinder "Create Volume from image bug (iscsi)" [Medium,New]18:48
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smcginnismtanino: Sure, I have to review that bug report again. Sounds familiar, but don't know any details.18:49
smcginnisAh, OK, the qemu-image convert stuff.18:49
mtaninosmcginnis: About this bug, we talked a little at meetup on Friday.18:50
smcginnismtanino: I forget exactly where we ended up there.18:51
mtaninosmcginnis: The problem is that qemu-img command causes error.18:52
smcginnismtanino: Wasn't it to retry without the flag?18:52
raunakyes, I would like to know the same. Eric had some suggestions18:52
mtaninosmcginnis: Based on the discussion with eharney, we seems root cause of this bug is not qemu-img command.18:53
mtaninosmcginnis: raunak Please see Eric's comment #18 on the bug.18:53
smcginnismtanino: Right, something with the specific backends?18:53
mtaninosmcginnis: I guess so. So in that case, can we get help from these driver vendors?18:53
mtaninosmcginnis: nimble and huawei, I think18:54
smcginnismtanino: Yeah, I think they should figure out why it's failing for them when it works fine for others.18:54
cFoutsscottda: not sure if Cao is going to ask you but this could probably use a review from you:
mtaninosmcginnis: Should I ask them directly or any good idea?18:55
mtaninoor at weekly meeting?18:55
raunakok. Need to figure out the race with device setup but we think it may be something to do with sector size.18:55
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mtaninoraunak: sector size?18:55
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raunakfrom the block level driver. The default sector size on the block device18:56
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mtaninoraunak: If the sector size causes problem, it always fail on their CI environment, I think.18:56
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jgriffithildikov: yes, you're definitely right19:17
ildikovjgriffith: :)19:19
ildikovjgriffith: hopefully the Hangout call will help to sort this out19:19
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openstackgerritColleen Murphy proposed openstack/cinder: Mark the v1 API as deprecated
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hemnacould use some love21:13
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openstackgerritNate Potter proposed openstack/python-cinderclient: Implement cinder backend-usage command
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openstackgerritNate Potter proposed openstack/cinder: Implement backend usage reporting
openstackgerritNate Potter proposed openstack/python-cinderclient: Implement cinder backend-usage command
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