Thursday, 2015-12-03

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SwansonDid PortOpt just disappear?00:12
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openstackgerritMitsuhiro Tanino proposed openstack/cinder: Robustify writing iscsi target persistence file  https://review.openstack.org/24788600:14
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - Extend Volume for VMAX3  https://review.openstack.org/24894100:26
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - Changing PercentSynced to CopyState in isSynched  https://review.openstack.org/24699200:44
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - Replacing deprecated API EMCGetTargetEndpoints  https://review.openstack.org/24432800:58
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wanghaojgriffith:ping01:04
wanghaojgriffith: John, still here?01:05
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - _remove_last_vol_and_delete_sg not being called for V3  https://review.openstack.org/25206601:16
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - VMAX driver failing to remove zones  https://review.openstack.org/24493301:35
openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - Fix for randomly selecting a portgroup  https://review.openstack.org/24330401:42
openstackgerritMudassir Latif proposed openstack/cinder: Allow replicated volumes to be recoverable  https://review.openstack.org/21990001:42
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - Incorrect storage group selected on an VMAX3 attach  https://review.openstack.org/25044301:51
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openstackgerritRyan McNair proposed openstack/cinder: WIP - Move QoS_Specs to be a VersionedObject  https://review.openstack.org/25198901:58
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - Fix for last volume in VMAX3 storage group  https://review.openstack.org/24433102:06
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openstackgerritHelen Walsh proposed openstack/cinder: EMC VMAX - getting iscsi ip from port in existing masking view  https://review.openstack.org/24599702:14
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openstackgerritHelen Walsh proposed openstack/cinder: Proper error handling for invalid SLO/Workload combination  https://review.openstack.org/24383702:21
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openstackgerritSean McGinnis proposed openstack/cinder: Remove version per M-1 release instructions  https://review.openstack.org/25271602:39
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openstackgerritMerged openstack/cinder-specs: Add spec for online-schema-upgrades  https://review.openstack.org/24597602:59
openstackgerritMerged openstack/cinder: LIO: Handle initiator IQNs as case insensitive  https://review.openstack.org/25246003:00
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openstackgerritzhangsong proposed openstack/os-brick: Improve the remove_multipath_device() method for linuxscsi  https://review.openstack.org/24930803:06
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openstackgerritMerged openstack/os-brick: Add requests to project requirements  https://review.openstack.org/24838305:00
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openstackgerritxing-yang proposed openstack/cinder-specs: Backup snapshots  https://review.openstack.org/23230505:06
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openstackgerritMerged openstack/cinder: Add a FakeGateDriver  https://review.openstack.org/24495605:12
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openstackgerritzhangsong proposed openstack/os-brick: Improve the remove_multipath_device() method for linuxscsi  https://review.openstack.org/24930805:57
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openstackgerritLisaLi proposed openstack/cinder: Check snapshots when restoring backup  https://review.openstack.org/25171306:01
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openstackgerritMan Li Qi proposed openstack/cinder: Improve the time cost for datastore selection in cinder vmdk driver  https://review.openstack.org/25281008:10
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openstackgerritMerged openstack/cinder: Robustify writing iscsi target persistence file  https://review.openstack.org/24788608:21
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openstackgerritMan Li Qi proposed openstack/cinder: Improve the time cost for datastore selection in cinder vmdk driver  https://review.openstack.org/25281008:30
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openstackgerritLisaLi proposed openstack/cinder-specs: Retype encrypted volumes  https://review.openstack.org/24859308:49
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openstackgerritPeter Penchev proposed openstack/os-brick: Add the StorPool brick connector.  https://review.openstack.org/19263910:23
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openstackgerritzhangsong proposed openstack/os-brick: Improve the remove_multipath_device() method for linuxscsi  https://review.openstack.org/24930810:24
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openstackgerritPeter Penchev proposed openstack/os-brick: Minor documentation fixes for the method parameters  https://review.openstack.org/25286610:28
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openstackgerritPeter Penchev proposed openstack/os-brick: Add the StorPool brick connector  https://review.openstack.org/19263910:29
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openstackgerritShay Halsband proposed openstack/cinder: XtremIO: fix generic glance cache with XtremIO  https://review.openstack.org/24981410:39
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swamireddyHI11:35
swamireddyIs cinder supports  key/signature Authentication Model? (assume that keystone has this support)11:36
dulekswamireddy: It should as keystonemiddleware supports it. What's the problem?11:38
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flip214a wish, because it's nearly christmas:11:45
flip214File "/opt/stack/cinder/cinder/volume/manager.py", line 1349, in initialize_connection11:45
flip214raise exception.VolumeBackendAPIException(data=err_msg)11:45
flip21400mVolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Driver initialize connection failed ...11:45
flip214would be nice if the backtrace _below_ would be printed, too, so that we can see which line in which driver failed...11:45
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openstackgerritwanghao proposed openstack/cinder-specs: Report backend state in service list  https://review.openstack.org/25292112:24
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DuncanT1flip214: I spent some time last week swearing at that very issue :-)12:33
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flip214DuncanT1: already proposed a patch?13:14
flip214if not, I've got a 1-line fix ....13:14
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DuncanT1flip214: No, I just put in  a one line grab-and-log-the-traceback13:20
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openstackgerritPhilipp Marek proposed openstack/cinder: Show the original backtrace for failures in initialize_connection()  https://review.openstack.org/25295713:44
dulekgeguileo: Hi! I've got a question on https://review.openstack.org/#/c/25193713:44
dulekgeguileo: Do you know how to solve e0ne's remark on mocking global config objects?13:45
DuncanT1flip214: I didn't know you could do that :-) I'll rememebr that13:45
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flip214DuncanT1: That I can do patches, or that raise can reuse the old backtrace?13:51
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DuncanT1flip214:  I didn't know the reuse-the-backtrace trick. Nice14:03
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openstackgerritLukas Bezdicka proposed openstack/os-brick: Remove brackets from portal  https://review.openstack.org/23442514:11
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flip214DuncanT1: I don't know about disadvantages, though!14:15
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DuncanT1There's some note pn one of the webpages about it creating a reference cycle which will slow the garbage collector slightly; I don't see that as an issue here14:16
openstackgerritzhangsong proposed openstack/os-brick: Improve connect_volume method of ISCSIConnector  https://review.openstack.org/24739014:16
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smcginnisflip214: The warning here makes me a little concerned about that:14:18
smcginnishttps://docs.python.org/2/library/sys.html14:18
smcginnisBut then again, I had to read it a few times and I'm still not sure if it really applies.14:19
openstackgerritzhangsong proposed openstack/os-brick: Improve connect_volume method of ISCSIConnector  https://review.openstack.org/24739014:20
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openstackgerritMichal Dulko proposed openstack/cinder: Use proper config option to connect to keystone  https://review.openstack.org/25193714:21
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flip214smcginnis: running into this code path should be the exception (sic ;) anyway14:22
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openstackgerritSean McGinnis proposed openstack/cinder: Remove version per M-1 release instructions  https://review.openstack.org/25271614:33
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geguileodulek: Sorry, I was having lunch14:36
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geguileodulek: I see you have posted a new patch for that review, I'll have a look now14:37
dulekgeguileo: No problem, I was able to figure it out. Besides - M-1 is almost cut (https://review.openstack.org/#/c/252715/), so it's no hurry.14:38
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geguileodulek: If there's no hurry I'll leave it for tomorrow, as I'd like to do actual coding now ;-)14:39
dulekgeguileo: Great!14:39
openstackgerritYuriy Nesenenko proposed openstack/cinder: Add synchronization in Block Device driver  https://review.openstack.org/25297914:40
dulekgeguileo: By the way - any update on required help?14:40
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dulekI think bluex is looking for some coding to do. ;)14:40
geguileodulek: Oh, yes I think I created a list14:40
dulekgeguileo: Awesome!14:41
geguileobluex: ping - interesting in helping with API races?14:41
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geguileos/interesting/interested14:41
bluexgeguileo: sure!14:42
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geguileobluex: Great!! because there are at least 5 or 6 more patches to do  :-)14:42
geguileobluex: I'm working on backup API races right now14:42
geguileoPending patches are:14:42
geguileo1- Transfers: delete, create, accept methods14:43
geguileo2- Snapshot creation: _create_snapshot, create_snapshot_in_db, create_snapshots_in_db, _create_snapshot_in_db_validate, _create_snapshots_in_db_reserve, _create_snapshot_in_db_options, create_snapshot_force14:44
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geguileo3- Volume creation + manage: create, manage_existing, manage_existing_snapshot14:44
dulekgeguileo: Maybe it will be easier to share and track in an etherpad?14:44
bluex^ good idea14:45
geguileodulek: You are soooooo right!! XD XD XD14:45
dulekgeguileo: Here to help. :)14:45
geguileoI'll do it now and then we can see how we distribute them14:45
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dulekxyang: Hi!14:48
dulekxyang: I'm looking through consistencygroup/api.py and got a little confused with the flow.14:49
dulekxyang: https://github.com/openstack/cinder/blob/master/cinder/consistencygroup/api.py#L387-L391 - is there any chance that request_spec will have these?14:49
dulekxyang: Seems like it can be populated only here - https://github.com/openstack/cinder/blob/master/cinder/consistencygroup/api.py#L149-L15014:49
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xyangdulek: hi, you are probably right.  doesn't seem it should have it there14:57
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geguileobluex dulek: https://etherpad.openstack.org/p/cinder-api-races14:59
bluexthx14:59
geguileobluex: np15:00
geguileobluex: I don't know which one is easier/harder, because whenever I tackle one of them I find "surprises"15:00
geguileobluex: But I think transfers should be relatively easy15:00
dulekxyang: Okay, thanks, I'll take that into account when working on RequestSpec object.15:01
dulekgeguileo: Any advices on how to split these patches to make them reviewable?15:01
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bluexgeguileo: ok, I think I'll start with transfers and then move to next ones15:01
geguileodulek: I have done the split there15:01
geguileodulek: 5 remaining patches, I'm working on 1 of those15:02
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geguileodulek: And I have grouped methods that need to be reworked15:02
dulekgeguileo: Okay, so patch per resource is enough. :)15:02
geguileodulek: Well, I have split it some other way15:02
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geguileodulek: For example deletes (volume and snapshots) were in one patch, and creation on other 215:03
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geguileoBut anything goes15:03
dulekgeguileo: Ah, okay. Anyway I guess numbers 1-5 are patch id. ;)15:03
geguileodulek: Yep15:03
geguileoIf someone starts looking at the code and decides to split them more or to group them some other way15:04
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geguileoThat can be done in the etherpad as long as a name is assigned to that group15:04
geguileoWhen I finish with backups I'll go and see what's left and get another group15:04
openstackgerritShay Halsband proposed openstack/cinder: XtremIO: fix missing multiattch flag  https://review.openstack.org/25176815:05
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dulekgeguileo: Great. I'm swamped with objects and DB migrations work, but bluex should be able to help. :)15:06
geguileodulek: I can imagine you have enough on your plate right now  :-)15:07
* dulek isn't at least bothered by management with non-cinder work.15:07
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openstackgerritRonen Mesonzhnik proposed openstack/cinder-specs: Support backup import on another Storage database  https://review.openstack.org/24917615:18
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openstackgerritNate Potter proposed openstack/cinder: Use the catalog to retrieve glance_api_servers  https://review.openstack.org/25247615:38
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openstackgerritMichal Dulko proposed openstack/cinder: OVO request_spec in migrate/manage/retype calls  https://review.openstack.org/25245815:52
openstackgerritMichal Dulko proposed openstack/cinder: Switch request_spec_list in create CG to ovo  https://review.openstack.org/25303315:52
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smcginnisildikov: +A! :)16:04
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ildikovsmcginnis: yeah, we made it!!! \o/ :)16:05
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ildikovsmcginnis: so thanks for the yesterdays chat :)16:06
ildikovscottda: hemnafk: ^^ :)16:06
smcginnisildikov: Sorry for the confusion. Thanks for pushing that. It will be great to have nova support. :)16:06
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ildikovsmcginnis: np, I did my best, I hope the Nova support will remain for the reviews too16:06
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scottdaGreat ildikov . Let us know how we can help further.16:08
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ildikovscottda: I rebased the code we have already16:09
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ildikovI need to double check it16:09
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ildikovwhere I will most probably need some help is testing16:10
scottdaPlease make sure I'm in on the reviews. I'll do some testing when I get a chance.16:10
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ildikovscottda: great, will do, thanks!16:10
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ntpttrdulek: I noticed in https://review.openstack.org/252458 you mention qos_specs not being part of volume types - I recently had a patch that added them to the output of type-show, would it be a simple thing to add them as an entry in cinder.volume.volume_types?16:14
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hemnamorning16:14
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dulekntpttr: It's more of adding them to VolumeType object. Something like that: https://review.openstack.org/#/c/251989/16:20
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ntpttrdulek: hmm? Maybe I'm confused but that patch looks like it's making them their own object rather than adding them to the VolumeType object16:24
hemnaildikov, it landed?!16:24
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ildikovhemna: \o/ :)16:24
hemnaw00t!16:24
hemnanice :)  congrats16:24
ildikovhemna: thanks for the help16:25
hemnaildikov, you are welcome.  I'm glad I could help confuse everyone :)16:25
tbarronntpttr: qos-specs can be shared among multiple volume types, so not part of volume type object itself16:25
ntpttrtbarron: ah okay, thanks - makes sense16:26
ildikovhemna: you weren't the first :)16:26
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openstackgerritGerald McBrearty proposed openstack/cinder: Storwize: add config option to control flash copy rate  https://review.openstack.org/24825016:26
ildikovhemna: on the other hand I think it was very useful to discuss this through16:27
openstackgerritThang Pham proposed openstack/cinder: Update migrate_volume API to use versionedobjects  https://review.openstack.org/22891616:27
ildikovhemna: so it's good that you all did confuse the situation a bit :)16:27
hemnaildikov, yah I hope it helps get everyone on the same page16:27
hemnaI also realized on the way home last night, that if we didn't have nova call cinder for each attach and had cinder track them, then when you did cinder list or cinder show, it would only ever show 1 attachment16:28
hemnawhich I think is bad16:28
openstackgerritGorka Eguileor proposed openstack/cinder-specs: Resource cleanup to support HA A/A  https://review.openstack.org/23697716:29
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ildikovhemna: if people assume it will list the instance attachments as well, then I agree16:29
ildikovhemna: so it depends a bit on how we define the terms and Cinder's expected behaviour IMHO16:30
openstackgerritSzymon Wr√≥blewski proposed openstack/cinder: Update initialize_connection to use versionedobjects  https://review.openstack.org/23889416:31
hemnaildikov, well we show attachments to instances now16:31
hemnait just happens to be one16:31
dulekntpttr: Sorry, I'm in a meeting. It is - but we can add lazy-loaded relationship to VolumeType.16:31
hemnaw/o the tracking there will be 'hidden' attachments that the user never sees16:31
hemnaand leads to confusion and problems debugging issues.16:31
xiaohuigeguileo: Hi, are you online? I have replied your new comments about the fail case of the logic for https://review.openstack.org/#/c/206923/.16:31
openstackgerritSzymon Wr√≥blewski proposed openstack/cinder: Update replication to use versionedobjects  https://review.openstack.org/23890616:31
dulekntpttr: But just after we have a volume.16:31
hemnaI also wonder about live migration issues16:31
geguileoxiaohui: Yep, I'm online16:32
geguileoxiaohui: I'll review it tomorrow morning16:32
ntpttrdulek: i see, thanks :)16:32
scottdaI like Cinder having control of the attachments. But then, some might say I have issues...16:32
hemna:P16:32
scottdaAnd I don't think Nova wants to deal with it.16:33
geguileoxiaohui: Unless it's urgent16:33
smcginnisMy whole thing is that instance attachments are outside the block storage management domain.16:33
xiaohuigeguileo:not urgent, tomorrow is ok. I have some opinion on the logic. Great thanks for reviewing it!16:33
geguileoxiaohui: Thanks for working on it and not giving up  ;-)16:34
ildikovhemna: as it shows instances right now then I totally agree that we should not change it now just out of the blue16:34
hemnayup16:34
scottdasmcginnis: Yeah, I get that. But then Nova could make the inverse arguement: They don't care about this, they just want an API to call to attach/detach a volume.16:34
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smcginnisThey have a volume. If they want to give it to an instance, great. If they want to give it to multiple instances, more power to you. If they just want to keep it around and keep it as a pet, so be it. :)16:35
ildikovwell, Nova is not generally against it, but I think if we start refactoring their already existing code, then we would still face with some level of sadness16:35
smcginnisildikov: Yeah, I agree with that.16:35
xiaohuigeguileo: thanks for your efforts too! :-)16:35
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openstackgerritGorka Eguileor proposed openstack/cinder-specs: Remove Cinder API races  https://review.openstack.org/20710116:36
scottdaI think it would be more architecturally sound to keep things as you want them smcginnis , but I appreciate your pragmatism on this. It's never happen without following the path we are on.16:36
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smcginnisscottda: Yeah, there's architectural purity, then there's reality. ;)16:36
scottdaSo the only question is: Group Hug or Cage Match?16:36
smcginnisCage match followed by a group hug? :P16:37
scottdaI like it!16:37
smcginnisI'm going to put it as a topic for the midcycle.16:37
smcginnisDefinitely something we should all discuss.16:37
ildikov:D16:37
scottdacool16:37
ildikovwhen and where do you have your mid-cycle?16:37
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scottdaThis year in Raleigh, NOrth Carolina, same week as Nova's unfortunately16:38
scottdaJanuary 26-2916:38
smcginnisildikov: Same week as nova's. :[16:38
ildikovit would be good if it would be at the same place too16:39
smcginnisildikov: That would have been good. Then we could do a group session too.16:39
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hemnaildikov, yah good luck changing nova's processes.16:40
hemnathat's simply not going to  happen16:40
smcginnisildikov: Maybe if we have some cinder-nova topics we could do a hangout.16:40
scottdaHey, great idea16:40
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* scottda sees know why smcginnis is our Fearless Leader16:41
smcginnisDef good to keep the communication open between us. You've been a big help with that scottda.16:41
smcginnisHah!16:41
scottdaI wish I had more time for it. I'm gonna hit the boss us this week on that very topic16:41
ildikovyeah, I'm not signed-up for the Nova one yet either, but Hangouts sounds pretty good either way :)16:41
DuncanT1smcginnis: I'm not sure instance attachments should be outside of cinder's domain - they're part of it now, and it lets you do things like access control on shares to reduce data exposure in the case of a compute node compromise (something that is designed into our public cloud solution)16:42
smcginnisildikov: We'll have one for remote attendees for sure.16:42
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hemnathe hangouts would be cool, if it works.  those can get recorded and posted on the cinder youtube16:42
hemnaDuncanT1, +116:42
ildikovsmcginnis: cool! sounds good :)16:42
hemnahiding attachments for volumes is bad.16:42
hemnathat's going to lead to no end of problems.16:42
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smcginnisDuncanT1: In case of a compute node compromise - the block storage is already accessible to the nova host. If that host is compromised I don't see how that helps.16:43
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DuncanT1smcginnis: Not every volume is assessable, only the ons(s) validly attached to that compute host16:43
DuncanT1smcginnis: You'd need to compremise the control plane to get access to more volumes16:44
DuncanT1smcginnis: i.e. 99.9% of volumes are safe16:44
smcginnisDuncanT1: Right. And it needs to be attached to the compute host for one instance. SO why does Cinder care if there are two instances using it.16:44
smcginnisDuncanT1: I'm not talking about the rest of the volumes on the backend.16:44
smcginnisDuncanT1: This is one volume with multiple attachments.16:44
DuncanT1smcginnis: Cinder needs to know what instances it is attached to (or at least what compute hosts) in order to set up the access control I just talked about16:44
smcginnisDuncanT1: As a backend I care about exposing a volume to a nova host.16:45
DuncanT1smcginnis: For any one volume, we control which compute host(s) it is attached to16:45
smcginnisDuncanT1: But what nova wants to do with it after that is really none of my busines.s16:45
smcginnisDuncanT1: Right - compuute hosts. Not the instances on those compute hosts.16:45
DuncanT1smcginnis: So you're treating multiple hypervisors on one host differently to multiple hypervisors on multiple hosts?16:45
DuncanT1smcginnis: That seems like a recipe for conveluted, hard to debug code16:46
smcginnisDuncanT1: Multiple hypervisors on one host?16:46
DuncanT1smcginnis: For multiple attach16:46
DuncanT1e.g. multiple instances of KVM16:46
smcginnisDuncanT1: One hypervisor, multiple guest VMs.16:46
smcginnisDuncanT1: Or are you saying running a hypervisor inside a guest? Nested virtualization?16:47
DuncanT1smcginnis: I consider each KVM guest on a compute host to have it's own hypervisor16:47
DuncanT1smcginnis: But that's just terminology16:47
smcginnisDuncanT1: Yeah, we may have a terminology mismatch here.16:47
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hemnasmcginnis, that's what CI is basically.16:48
DuncanT1So if I have volume A attached to instance 1 one compute host HOST1, and the same volume also attached to instance 2 on the same host, I think cinder should know about both attachments separately, just like it absolutely needs to if the instances happen to be on HOST1 and HOST216:48
scottdaSo, as long as Cinder cares which compute host a volume is attached to, we'd want to be called for each attach and detach to update the DB.16:49
hemnaDuncanT1, +116:49
smcginnishemna: What, nested virtualization? Yes, but then you're still attaching to the nova compute host.16:49
hemnacinder list and cinder show, should show all of the attachments for the volume, regardless of what host it's attached to.16:49
smcginnisscottda: Per compute host.16:49
DuncanT1smcginnis: Ceph and others attach to the KVM instance, *not* to the host. iSCSI might be going that way too16:49
scottdaat the very least per compute host. Just to know about the export16:49
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hemnaDuncanT1, that's what the nova guys want, but we also object to that :)16:50
DuncanT1hemna: Why?16:50
hemnaheh16:50
DuncanT1hemna: As long as it works, makes a bunch of stuff easier16:50
hemnasmcginnis, we should find that discussion on the irc archive16:51
hemnaDuncanT1, the thing is, it doesn't16:51
DuncanT1hemna: Happy to learn about issues I don't know about16:51
smcginnisDuncanT1: And are we going to track containers? And track that Exchange server is running on baremetal that we've attached to? Why do I care the end consumer, just the SCSI intitiator that needs the block device.16:51
DuncanT1smcginnis: far from all of cinder is iSCSI16:51
hemnasmcginnis, those containers may very well have a unique iqn16:51
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hemnain which case it has to be a new attachment tracked.16:51
smcginnishemna: But then they are the initiator, not the host they are running on.16:52
DuncanT1smcginnis: And the ways we do iSCSI differ between backends16:52
hemnasmcginnis, but unless you track that attachment you can't do force detach16:52
hemnabecause you have no way of tracking the initiator information per attachment16:52
smcginnishemna: Why not?16:52
hemnawhich is on my todo list16:52
smcginnisBut it's a separate initiator in that case, so it is a different unique attachment.16:52
hemnain order to do force detach correctly, you need to know the initiator connector16:52
hemnawhich we currently aren't saving16:52
hemnabut need to.16:52
hemnayah, that's exactly what I said16:53
hemna:P16:53
smcginnis:)16:53
scottdaSo, just to throw out wild ideas, what if Cinder did not track any attachments? We already have no means to deal with detach within Cinder, absent a call from the consumer to terminate_connection....16:53
scottdaOur force-detach does not work with multiattach16:53
hemnascottda, how do you debug issue then ?16:53
hemnawhen you have no idea what a volume is attached to ?16:53
scottdaWe would only have the possibility of force-detach-all16:53
hemnascottda, yah16:54
hemnawhich I think is probably ok.16:54
hemnaok afk....16:54
scottdaIt may be the only way.16:54
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smcginnisI think this conversation requires a whiteboard. And a few beers. Good thing the midcycles not far away. :)16:54
scottdaagreed, but nice to get some context going.16:55
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smcginnisYeah, definitely.16:58
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openstackgerritYuriy Nesenenko proposed openstack/cinder: Add synchronization in Block Device driver  https://review.openstack.org/25297917:09
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ildikovsmcginnis: scottda: hemna: sorry, was on a meeting in parallel17:16
ildikovinteresting discussion, I'm still happy we managed to find a small common point for the Nova spec for now :)17:17
ildikovlet's see where it goes, if you plan to discuss this on the mid-cycle I will definitely try to join at least via Hangouts17:18
scottdaildikov: https://etherpad.openstack.org/p/mitaka-cinder-midcycle is our tracking etherpad for the mid-cycle17:19
scottdaIf we've enough to discuss, we'll plan a Cinder-Nova hangout for shared topics.17:19
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ildikovscottda: cool, tnx17:22
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openstackgerritYuriy Nesenenko proposed openstack/cinder: Implement snapshots-related features for Block Device Driver  https://review.openstack.org/25311117:49
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openstackgerritWalter A. Boring IV (hemna) proposed openstack/cinder: WIP 3PAR fix driver to work with image cache  https://review.openstack.org/23614318:00
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thingeesmcginnis, jgriffith so discussions have stalled on https://review.openstack.org/#/c/182150/618:15
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thingeeI think wanghao spoke on the use case of outside DR software using this information. I think we agree Cinder would not be the DR software?18:16
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smcginnisthingee: Yeah, I think that's right.18:16
thingeeso if we want something not Cinder to accomplish this, we need to give some information18:16
hemnathingee, +118:17
smcginnisSo a little rustly (I need to read through again) but the idea is to make access to the necessary data easier18:18
smcginnisSo something like smaug, DRagon, projectX can pick it up and do what's necessary.18:18
smcginnisIs that right?18:18
thingeethe replicated volume ref.18:18
hemnasmcginnis, I think so yes18:18
smcginnisthingee, hemna: OK, cool. That makes sense to me.18:18
thingeeyes that was my understanding as well18:19
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thingeeSo what about volumes that weren't originally managed by cinder, that are replicated.18:20
thingeedoes the driver tell cinder that information?18:21
thingeeThis is a separate problem I think18:22
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smcginnisthingee: Yeah, I think so too.18:22
thingeeto touch onto jgriffith's point, I agree that we shouldn't save the data on unmanage and expect things to be valid. I think we should on managing ask the driver for everything it knows about that volume18:24
thingeeis that volume replicated, great let me update the db18:24
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smcginnisThat makes sense on unmanage. In that case we are being told we are no longer responsible for the volume. We shouldn't be expected to keep anything around for it.18:24
thingeethis of course is optional, but we should settle on the expect dict of data returned from driver to the manager layer18:24
smcginnisWas there a recommended dict defined in the spec? (Still haven't gotten back to reread it)18:26
xyang1thingee: smcginnis seems this should be part of replication v2, i do18:27
xyang1not sure how this is related18:27
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thingeesmcginnis: no this doesn't touch on manage/unmanage at all. This is a separate problem I'm talking about. This is simply us storing the real driver ref of the replicated volume and giving that in an admin api call18:28
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thingeesmcginnis: in which then DR software can query for it18:28
smcginnisthingee: Ah, OK.18:28
thingeexyang1: sure18:29
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smcginnisxyang1: Yeah, true18:29
xyang1thingee: smcginnis so this data could be returned by driver after replication enable, I think18:30
thingeexyang1: right18:30
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smcginnisxyang1: Probably good to get it somehow after manage existing to cover the other case thingee was talking about too.18:35
xyang1smcginnis: what is manage existing?18:35
xyang1smcginnis: I thought this is about replication?18:36
xyang1smcginnis: you mean replicate managed device?18:36
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smcginnisManaging an existing volume that has already been set up with replication.18:36
smcginnisNot sure how we even handle that right now.18:36
xyang1smcginnis: oh, that is one step further18:36
xyang1smcginnis: thingee, I don't see common dicts defined for replication data right now18:37
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xyang1so right now it is free form defined by driver after replication enable call18:38
xyang1{replication_driver_data: vendor-data}18:40
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thingeexyang1: I think that was intentional18:41
thingeesmcginnis, jgriffith commented on the spec, it would be great to move forward or continue discussion. don't want to leave wanghao hanging.18:42
thingeebbl meeting18:42
xyang1thingee: ok, thanks18:43
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openstackgerritChris Morrell proposed openstack/cinder: Address potential races in SolidFire VAG  https://review.openstack.org/25266019:01
openstackgerritNate Potter proposed openstack/cinder: Use the catalog to retrieve glance_api_servers  https://review.openstack.org/25247619:02
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jgriffiththingee: smcginnis still not quite sure.. but summary posted via inline comment19:55
jgriffiththingee: smcginnis with some additional notes in the main comment19:55
jgriffiththingee: smcginnis no guarantee that I'd up vote the code, but no harm in trying it out :)19:56
smcginnisheh :)19:56
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xyang1jgriffith: +A without +2?  does that work?19:57
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jgriffithOops19:58
jgriffithxyang1: thanks :)19:58
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jgriffithxyang1: and yes it does19:58
xyang1jgriffith: I was wonder what you are trying to do:)19:59
jgriffithxyang1: me too :)19:59
xyang1:)19:59
smcginnisjgriffith: Since I've been leaning on Swanson for replication updates I'm not sure - do we have enough info in the db to not make it up to the drivers?20:00
smcginnisjgriffith: I do agree, I don't really like the "optional" wording.20:01
Swansonjgriffith, ^^^^ that should frighten you.20:01
smcginnisHah!20:01
smcginnisI bug Swanson, Swanson bugs jgriffith, then I don't have to bug jgriffith directly. ;)20:01
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xyang1jgriffith: smcginnis one thing I am not sure is why not return the whole replication_driver_data?  is replicated_volume_ref enough?20:06
jgriffithxyang1: +120:07
jgriffithxyang1: I'd just return that entire ref20:07
xyang1jgriffith: ok, I'll add that comment there20:07
jgriffiththingee: seems to get it though... we should ask him20:07
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scottdahemna: Here's the API microversion code for cinderclient: https://review.openstack.org/#/c/248163/20:33
SwansonWhat is the replicated_volume_ref?20:35
xyang1Swanson: I think that is a new thing defined in that spec,  reference for vendor to recognize the replicated volume?20:36
xyang1Swanson: like a name, id, etc20:36
Swansonxyang1, So, the source?20:37
Swansonxyang1, not a repl destination...20:37
xyang1Swanson: I think it is the target20:37
xyang1jgriffith: what is your interpretation?20:37
Swansonxyang1, You can have 100 targets.20:38
Swanson(set your timeouts high.)20:38
jgriffithSwanson: xyang1 hehe.. I had assumed "target" or "destination"20:38
jgriffithSwanson: xyang1 AKA "replica"20:38
jgriffithhonestly, reading again I'm not entirely sure of the goal still :(20:39
jgriffithwas hoping thingee might explain20:39
xyang1jgriffith: ok:)20:39
Swansonjgriffith, xyang1 so replica_volume_ref rather than replicated_volume_ref.20:39
jgriffithxyang1: Swanson  I *THINK*....20:39
jgriffithxyang1: Swanson they want to be able to sort of "re-hydrate" a volume to point to the replica/target20:40
xyang1Swanson: may be you can ask him to clearly define it and provide example in the spec20:40
jgriffithxyang1: Swanson in other words say you have volume V1-a replicated to V1-b20:40
jgriffithV1-a pukes....20:40
jgriffithI *think* they want to be able to take the reference to V1-b and cram it in to the db record for V1-A maybe?20:41
jgriffithwhich I don't get.. that's what rep V2 kinda does for you anyway... it was the whole point20:41
jgriffithI've decided that I suck at interpretting specs so now I go with the flow and wait to see the code :)20:41
Swansonjgriffith, xyang1 I think it is more to bring up v1-b on cloud b.20:42
jgriffithSwanson: ahh.. yeah... I think you're right20:42
jgriffithSwanson: although... I'd kinda have to ask "why"?  But that's ok :)20:42
xyang1Swanson: ok, make sense20:42
jgriffithSwanson: xyang1 So they want to duplciate the volume-ref from V1-a in the cloud that V1-b is in?20:43
jgriffithSwanson: xyang1 so manage the volume and get all of the "extra" info?20:43
jgriffithI still don't see the value20:43
Swansonjgriffith, xyang1 say I have v1-a replicated to V1-b AND v1-c.  (One local recovery and one remote.)  What get's returned?20:43
jgriffithor need... everything is kinda there already20:43
xyang1jgriffith: hmm, manage could work too20:43
jgriffithSwanson: :)20:43
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xyang1Swanson: not sure:). it is not specified in the spec20:45
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openstackgerritSean McGinnis proposed openstack/os-brick: Add reno for release notes management  https://review.openstack.org/25320720:48
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Swansonjgriffith, xyang1 asked for more detail.20:50
jgriffithSwanson: Ohhh sure!  Just trying to make me look bad with disagreement counts aren't you?  :)20:51
Swansonjgriffith, I forgot about those.20:52
jgriffithSwanson: LOL20:52
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xyang1Swanson: ok20:53
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openstackgerritMerged openstack/cinder: VMware: Unit test refactoring (image to vol - 1/2)  https://review.openstack.org/24917420:59
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openstackgerritMerged openstack/cinder: VMware: Replace mox with mock  https://review.openstack.org/24979721:09
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openstackgerritJacob Gregor proposed openstack/cinder: Storwize: Split up __init__ into separate files  https://review.openstack.org/24032921:29
openstackgerritGerald McBrearty proposed openstack/cinder: Storwize: Add force flag on first vdisk mapping call  https://review.openstack.org/24822521:29
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thingeejgriffith: I only think I get it21:35
thingeeI think if manage is able to retrieve that information on the second cloud, sure, that sounds like a better solution to me21:37
thingeesmcginnis, hemna xyang1 wanghao ^21:37
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xyang1hi21:38
openstackgerritHelen Walsh proposed openstack/cinder: Error handling for invalid SLO/Workload combO  https://review.openstack.org/24383721:38
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thingeejgriffith: I added a comment about it. I like that better.21:43
jgriffiththingee: cool21:43
jgriffiththingee: thanks!21:43
hemnawhat'd I miss21:44
thingeehemna: https://review.openstack.org/#/c/182150/11 last comment21:44
hemnathingee, thanks, checking21:44
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xyang1thingee: that makes sense, if manage works, we don't need to introduce new logic21:48
thingeecredit goes to jgriffith  :)21:49
openstackgerritMerged openstack/cinder-specs: Backup snapshots  https://review.openstack.org/23230521:49
hemnajgriffith, +121:49
hemnayah sounds good to me21:49
xyang1jgriffith: +121:49
jgriffiththingee: nah... it was a long conversation among several :)21:49
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openstackgerritTom Swanson proposed openstack/cinder: Dell SC: Implements Replication V2  https://review.openstack.org/24486722:02
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openstackgerritAbhilash Divakaran proposed openstack/cinder: Add volume driver for Tegile IntelliFlash array  https://review.openstack.org/24678722:42
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openstackgerritJacob Gregor proposed openstack/cinder: Storwize: Split up __init__ into separate files  https://review.openstack.org/24032922:44
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openstackgerritMerged openstack/cinder: VMware: Unit test refactoring (image to vol - 2/2)  https://review.openstack.org/24917523:03
openstackgerritMerged openstack/cinder: Remove deprecated LVM ISCSI and ISER Drivers  https://review.openstack.org/25094823:04
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openstackgerritRyan McNair proposed openstack/cinder: WIP - Move QoS_Specs to be a VersionedObject  https://review.openstack.org/25198923:09
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openstackgerritChristian Berendt proposed openstack/cinder: Check prefix/postfix with startswith()/endswith()  https://review.openstack.org/25327423:56
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