Wednesday, 2017-09-27

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jungleboyj:-)  Sorry, exhausted and a little slap happy.00:06
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tommylikehuhey jungleboyj , ildikov  do you mean to use policy to limit multiattach volume's attachments that only only one could been set with R/W flag?01:09
jungleboyjtommylikehu: using policy to control whether we have read only or read right attachments for volumes. We need to consider both.01:11
tommylikehujungleboyj: it's not related how many r/o or r/w attachments we can have for one specific volume, right?01:14
jungleboyjNo. That would be something to try to figure out in the future. Initially it would just be setting policies as to whether or who can do read only versus read write.01:17
tommylikehujungleboyj: same to this case? https://github.com/openstack/cinder/blob/master/cinder/volume/api.py#L140501:17
openstackgerritDongdong Pei proposed openstack/cinder master: Fix adjusted_free_virtual in CapacityFilter  https://review.openstack.org/50753901:23
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openstackgerritTommyLike proposed openstack/cinder master: [policy in code] Add support for backup resource  https://review.openstack.org/50701501:48
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jungleboyjtommylikehu:  I think it would be a little more complicated than that as it would be using policy to determine who could attach read/write and read-only .02:21
tommylikehujungleboyj:  ok02:22
jungleboyjtommylikehu:  Do we have any place else where we do anything like that/02:22
tommylikehujungleboyj:  so your point is to add more granularity in that case, not only the project owner or admin.02:26
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jungleboyjtommylikehu:  Well, I think the starting point is to use policy with admin or not admin.03:11
jungleboyjtommylikehu:  I need to think about it more though.03:11
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tommylikehujungleboyj:  good!03:12
ildikovjungleboyj: tommylikehu: we would like to have the ability to turn this on and off first03:14
ildikovWe just couldn't figure it out yesterday with johnthetubaguy that how R/W and R/O right now after a quick look03:15
tommylikehuildikov:  extend attach volume has the same case03:15
tommylikehuhttps://github.com/openstack/cinder/blob/master/cinder/volume/api.py#L140503:15
ildikovSo I thought bring up both here as a heads up where we need help on03:15
openstackgerritTommyLike proposed openstack/cinder master: [policy in code] Add support for snapshot resource  https://review.openstack.org/50772103:15
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ildikovtommylikehu: yep, I saw the link03:15
ildikovtommylikehu: we might want more variations than that in the future, but maybe some of that should happen on the Nova side03:16
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ildikovtommylikehu: I don't see our options clearly on this one yet as we didn't really play with R/W and R/O that much in the past03:17
jungleboyjildikov:  You are still up?03:18
ildikovjungleboyj: no, I slept 2-2.5 hours03:18
ildikovjungleboyj: going to the airport right now03:19
jungleboyjSo I have been thinking about this since we talked about this earlier and I seem to have myself wrapped around the axle.03:19
tommylikehuildikov:  safe tri[03:19
tommylikehutrip03:19
ildikovtommylikehu: thank you!03:19
jungleboyjildikov:  Hope you can get some sleep on the plane.03:20
ildikovWill try :)03:20
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jungleboyjtommylikehu:  Maybe I am not understanding what you are thinking with the extend attached volume?03:21
tommylikehujungleboyj:  guess you do. That one only provides seperate policy for difference cases( attached or nor)03:23
jungleboyjWith the extend attached volume it is ... ok that was just what I was about to say.03:24
tommylikehuneed more investigate on that.03:25
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jungleboyjtommylikehu:  Yeah, because here we are talking about two different options for a policy.03:29
jungleboyjtommylikehu:  So, the basic case would be to be able to enable or disable attaching read/write for a multi-attached volume.03:30
jungleboyjThe problem is that John is proposing that 'shared_volume' be the default case which seems to make having a policy for it useless.03:31
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jungleboyjIf we had 'shared_volume' as False by default then we could have a policy that when 'true' only admin could attach read/write or something.03:32
tommylikehuok03:34
jungleboyjtommylikehu:  Am I making any sense>03:34
tommylikehujungleboyj:  sure03:34
tommylikehujungleboyj:  but nothing come to mind for your case now, sorry03:36
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jungleboyjtommylikehu:  Ok, no worries.  I will keep thinking about it and maybe chat with smcginnis and get his inputs.03:37
tommylikehujungleboyj:  ha, great!03:38
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jungleboyjtommylikehu:  Let me know if you have any thoughts.03:43
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tommylikehujungleboyj:  no problem03:44
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vivsoniAnyone facing jenkins 'gate-cinder-python35' failure04:40
vivsonift8.1: subunit.parser_StringException: Binary content:04:40
vivsoni  Packet data (application/octet-stream)04:40
vivsonii assume this is something to do with infra04:41
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vivsonihttp://logs.openstack.org/72/506072/7/gate/gate-cinder-python35/9f7f2c6/console.html04:42
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openstackgerritDongdong Pei proposed openstack/cinder master: Fix free_capacity  https://review.openstack.org/50774606:10
openstackgerritDongdong Pei proposed openstack/cinder master: Fix free_capacity  https://review.openstack.org/50774706:10
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openstackgerritGhanshyam Mann proposed openstack/cinder master: Fix description for volume_type object in API Ref  https://review.openstack.org/42546106:18
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openstackgerritDongdong Pei proposed openstack/cinder master: Fix free_capacity  https://review.openstack.org/50775206:38
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openstackgerritTommyLike proposed openstack/cinder master: [policy in code] Add support for message, worker, cluster resources  https://review.openstack.org/50776807:19
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openstackgerritMerged openstack/cinder master: 3PAR: Cinder volume revert to snapshot support  https://review.openstack.org/50607208:38
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arnewiebalckAre there any activities already to integrate the Ceph/Luminous’ feature to defer the deletion of an image into Cinder? I’m thinking of: replace removal by move-to-trash and have a periodic task to clean up images marked as trash after a configurable timeout. This should help in case of accidental deletion and would make volume “deletion” instantaneous from the user’s pov.09:10
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openstackgerritTommyLike proposed openstack/cinder master: [policy in code] Add support for group, g-snapshot resources  https://review.openstack.org/50781210:03
openstackgerritDongdong Pei proposed openstack/cinder master: Fix free_capacity  https://review.openstack.org/50775210:05
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openstackgerritlihaijing proposed openstack/cinder master: Api-ref: change 'tenant' to 'project' in v2 doc  https://review.openstack.org/50781310:21
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openstackgerritPooja Jadhav proposed openstack/cinder master: Extracted HTTP response codes to constants  https://review.openstack.org/43489810:48
chhavireview request: https://review.openstack.org/#/c/507361/10:50
chhavihemna_: https://review.openstack.org/#/c/504482/10:51
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openstackgerritjunbo.li proposed openstack/cinder master: tests: replace .testr.conf with .stestr.conf  https://review.openstack.org/50786614:07
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openstackgerritKaitlin Farr proposed openstack/cinder master: Remove deprecated keymgr code  https://review.openstack.org/46825214:28
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openstackgerritSean McGinnis proposed openstack/cinder master: Remove legacy driver name mappings  https://review.openstack.org/50787914:38
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openstackgerritGhanshyam Mann proposed openstack/cinder master: Fix api-ref for reset group snapshot  https://review.openstack.org/50789215:12
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openstackgerritEvgeny Antyshev proposed openstack/cinder master: Add ploop to parallels naming conversion  https://review.openstack.org/50719316:05
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openstackgerritBen Swartzlander proposed openstack/cinder master: NetApp ONTAP: Fix reporting of provisioned_capacity_gb  https://review.openstack.org/50567216:38
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jgriffithHas anybody else had problems running single unit tests?16:48
jgriffithsmcginnis: ^^16:48
jgriffithI'm not sure sure but I think it conincided with stestr16:48
jungleboyjjgriffith:  I have always had issues getting one test to run.  :-)16:48
jgriffithbut something like `tox -epy27 -- cinder.tests.unit.test_foo` no longer seems to work16:48
jgriffithhmm16:48
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lhx_jgriffith, ++16:50
smcginnisjgriffith: Did that ever?16:50
jgriffithsmcginnis: oh yes, it did; I use that heavily16:50
smcginnisjgriffith: From what I've always done, you either need -n for a specific test or -r for a regex match.16:51
lhx_jgriffith, all the command in this page doesn't work? https://wiki.openstack.org/wiki/Testr#Debugging_.28pdb.29_Tests16:51
smcginnisjgriffith: At least that's how it's been documented: https://docs.openstack.org/cinder/latest/contributor/testing.html#running-a-subset-of-tests-using-tox16:51
jgriffithsmcginnis: let me check -n16:51
tommylikehusmcginnis:  +116:51
openstackgerritGorka Eguileor proposed openstack/cinder master: Run backup compression on native thread  https://review.openstack.org/50751016:51
jgriffithsmcginnis: FYI https://wiki.openstack.org/wiki/Testr16:52
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jgriffith:)16:52
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jungleboyjjgriffith -- worked a long time ago.  Been a while since I tried it though.16:53
smcginnisHuh, never tried that.16:53
smcginnisLooks like debugging is the same, just don't need to get the list of tests.16:53
smcginnisI always just activate the venv, then "python -m testtools.run cinder.tests.unit.test_stuff"16:54
jgriffithsmcginnis: hehe, that's what I've been doing :)16:54
jgriffithI proposed a patch long long ago for --debug and pdb16:55
jgriffithok... well just me then16:55
jgriffithnever mind :)16:55
smcginnisjgriffith: Patch to ostestr?16:55
jgriffithsmcginnis: yeah16:56
smcginnisjgriffith: Don't suppose it's still out there? I think that would be very useful.16:56
jgriffithit was actually removing the requirement for --debug IIRC16:56
jgriffithsmcginnis: it was years ago and merged, but I don't know if that whole thing works any more or not16:56
smcginnisHuh, I'll have to give it a shot next time.16:57
jgriffithIt still works16:58
smcginnisNice - good to know.16:58
jgriffithadd your pdb statement then run `tox -epy27 -- -n cinder.tests.unit.test_foo`16:58
jgriffithand yes, you're correct my problem is solved if I use -n16:59
smcginnisCool16:59
smcginnis-r can come in handy too.16:59
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openstackgerritMerged openstack/cinder master: Fix api-ref for reset group snapshot  https://review.openstack.org/50789217:12
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openstackgerritHanxi Liu proposed openstack/cinder master: Address importing directory conflict  https://review.openstack.org/50793717:32
lhx_jungleboyj, smcginnis, could you help review ^?17:34
openstackgerritKaitlin Farr proposed openstack/cinder master: Update provider parameter in sample json files  https://review.openstack.org/50794017:47
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openstackgerritKaitlin Farr proposed openstack/cinder master: Remove deprecated keymgr code  https://review.openstack.org/46825217:51
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openstackgerritKaitlin Farr proposed openstack/cinder master: Update provider parameter in sample json files  https://review.openstack.org/50794018:25
jungleboyjmriedem:  You around?18:29
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mriedemsort of18:33
mriedemsomething something forum multiattach18:34
mriedemgo ahead18:34
mriedemi haven't posted any forum topics yet18:34
mriedemnot sure what there will be to talk about besides people saying, "yes make it happen"18:34
mriedemcould give a background on prequisites, and questions to ops about what policy rules they need18:35
mriedemjungleboyj: ^18:35
jungleboyjmriedem:  Well and also an opportunity to share the progress we have made.18:36
jungleboyjmriedem:  Man, should I be scared I don't event to say what I want?18:36
mriedemi saw your mention in the cinder meeting18:37
jungleboyjmriedem:  :-)18:37
jungleboyjOk, I will propose the session.18:38
smcginnismriedem, jungleboyj: I think it might be good to have the discussion with ops around R/W, R/O, and how to manage that. Expected user experience, etc.18:38
jungleboyjsmcginnis:  Yeah, that is good.  We know that they want multi-attach but I think we need to better understand how they are going to use it.18:39
ildikovsmcginnis: +1, my thought exactly18:47
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ildikovsmcginnis: we will go with a basic on/off as starting point most probably, but it would be beneficial to understand how they will use it beyond that18:48
smcginnis;) Lots of people are asking for it. I'm concerned that even though they are all asking for "multiattach", what that means to each of them may be slightly different.18:50
jungleboyjsmcginnis:  Right.  I wonder how many are going to assume we have done some magic to make it work with all backends/filesystems, etc .18:50
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smcginnisAnd that they can just format it ext4 and read/write from all their hosts.18:51
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jungleboyjYeah ...18:52
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jungleboyjsmcginnis:  Have we really been working on multi-attach since 2013?19:03
smcginnisYerp19:04
smcginnisIn one form or another.19:04
jungleboyjBecause that is what the Spec and Blueprints go back to.19:04
jungleboyjThis stuff is all really old though.19:06
smcginnisYeah, we were "done" with multiattach around kilo I think. Until we realized it couldn't be used by anyone.19:07
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jungleboyjBwah ha ha.  Maybe we have it right this time?19:08
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jungleboyjOk, I have our submissions in.19:16
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ildikovNice, thanks guys!19:20
jungleboyjildikov: No problem.19:20
openstackgerritSean McGinnis proposed openstack/cinder master: Clean up api-ref index page  https://review.openstack.org/50795919:22
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openstackgerritSean McGinnis proposed openstack/cinder master: Clean up api-ref index page  https://review.openstack.org/50795920:22
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jungleboyjjgriffith:  You around?20:40
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smcginnisFunny, I was just going to ping jgriffith.20:44
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jungleboyj:-)  I need someone with experience in iscsi and LVM.20:52
jungleboyj:-(20:52
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smcginniseharney: You around?21:04
eharneysmcginnis: yep21:05
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smcginniseharney: So... this lvm_max_over_provisioning_ration setting.21:05
smcginniseharney: It's confusing AF.21:05
eharneysmcginnis: well, maybe21:05
smcginniseharney: You think we still need that? I think it may do more harm than good.21:05
eharneysmcginnis: i didn't really want it in the first place... it was a compromise instead of changing the default over provisioning ratio (which IMO we should still do)21:06
smcginnisIf we default to thin, and we overprovision by default, I kinda think we should treat LVM just like any other backend. If that doesn't work for them, then they can set the ratio to something more appropriate for there environment.21:07
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smcginnis*their21:07
eharneywho can?21:08
smcginniseharney: They deployer.21:09
smcginnis*The gah!!21:09
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eharneyi still believe it isn't reasonable to ask deployers to change settings if they don't want the default ratio of 20x... this seems very unsafe to me21:11
smcginnisKey part there was "if they don't want". If they are fine running thin provisioned then it should allow over provisioning. Kind of the whole point IMO.21:12
eharneyi don't see why this is the one case where we default to something that will blow your foot off if you aren't paying attention... it should be opt-in, not opt-out21:12
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eharneymaybe they don't know they don't want it until their array fills up21:13
smcginnisIt won't though. As long as they don't consume all the actual space. People are pretty used to how thin provisioning works from what I've seen.21:14
smcginnisI think there's more of an issue with "why the heck can't a create more volumes when they're all thin provisioned?"21:14
eharneywell, that seems likely to be because cinder and a lot of drivers weren't even computing space statistics correctly, which is being fixed up now, right?21:15
eharneygiven some of Gorka's recent findings, a lot of people using thin provisioning weren't relying on the calculations they thought they were anyway21:16
smcginnisThey were off, sure. But they would still allow some over provisioning.21:16
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eharneyat any rate, i wouldn't be terribly opposed to ditching the LVM-specific setting i guess21:17
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openstackgerritSean McGinnis proposed openstack/cinder master: Deprecate LVM overprovisioning ration and deprecate  https://review.openstack.org/50798521:18
eharneynow that we're getting backend_defaults config options, there's other ways to address the issue that weren't available before21:18
smcginniseharney: Let's see how it goes. ^^ :)21:18
eharneysince another motivation for having that option was that it wasn't possible to include a default conf setting in a cinder package21:18
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smcginniseharney: True. Now could set to a "safer" number easier for all backends.21:18
openstackgerritSean McGinnis proposed openstack/cinder master: Deprecate LVM overprovisioning ratio and deprecate  https://review.openstack.org/50798521:19
smcginnisJust can not type today.21:19
eharneysmcginnis: that commit summary is kind of redundant and redundant21:19
smcginnispatrickeast: Please shut down your CI.21:19
smcginniseharney: Doh! I meant to mention not override.21:20
patrickeastsmcginnis: sure, one sec21:20
openstackgerritSean McGinnis proposed openstack/cinder master: Stop overriding LVM overprovisioning ratio and deprecate  https://review.openstack.org/50798521:20
patrickeastzuuls off21:21
smcginnispatrickeast: Thank you. :)21:21
eharneysmcginnis: your bug report points out the other issue with this setting... nobody can remember if it's spelled "oversubscription" or "over_subscription" :)21:23
smcginniseharney: We seem to favor over_sub_script_ion21:23
eharneylol21:23
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smcginnislogical_volume_manager_over_sub_scription_rati_o21:24
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* smcginnis can finally get back to testing scale on my tiny test machine21:26
jgriffithOh!!  I see I missed my favorite debate :)  Sweet!21:33
jgriffithand jungleboyj TBF, I didn't tweet it but multi-attach has been in use by Cinder consumers since K21:33
jgriffithit actually works, just not with Nova21:33
jgriffithand not if you're dumb :)21:33
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jungleboyjjgriffith: Really?21:37
jungleboyjI knew some IBM customers were using it.21:37
jungleboyjSo, how are customers using it if not with Nova?21:38
jungleboyjpatrickeast:  please fix your CI21:41
patrickeastjungleboyj: its on the list..21:41
jungleboyj:-)21:41
ildikovjgriffith: and there's also local changes in the Cinder code depending on what driver they use21:44
jgriffithjungleboyj: They set the multi-attach flags and ignore the status checks on things21:44
ildikovjgriffith: and even my never merged Nova patches made it into production21:44
jungleboyjildikov:  Yeah, that was what I was thinking of that IBM had done.21:45
jgriffithjungleboyj: IIRC both Gophercloud and Rexray do this21:45
ildikovjgriffith: so it's really time to fix the mess now... :)21:45
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jgriffithIt was time as soon as that code landed :)21:45
jungleboyjOk, so my tweet should be that we need to make it official.  :-)21:45
jgriffithwhere getting there21:45
jgriffithbut I'm trying to figure somethign out that used to be "ez"21:46
ildikovjgriffith: I know, was just chewing on it for fun :)21:46
jgriffithI'm introducing a new column to a table, and when I do that I want to also insert a value for said new column21:46
jgriffithit used to be I would add the column, the do a list on the table and iterate through look for column.value == None and update it21:46
jgriffithbut that doesn't seem to be working oddly21:46
ildikovIn what way does that not work?21:47
jgriffithhttps://gist.github.com/j-griffith/cf45938a373cab99d6dab4ae0f91a11921:48
jgriffithresult is that I have my columns, but they're Null21:49
jgriffithit's been so long since I've done any real DB migrations that it's sad21:49
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ildikovBut if you set it nullable=True and not giving it a default value it doesn't seem fully odd21:51
ildikovBut I didn't do too many DB migrations21:52
ildikovat all...21:52
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smcginnisjgriffith: We have existing migrations that do something similar.22:27
smcginnisOr at least we did.22:27
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openstackgerritSean McGinnis proposed openstack/cinder master: Stop overriding LVM overprovisioning ratio and deprecate  https://review.openstack.org/50798522:37
openstackgerritMerged openstack/cinder master: Api-ref: change 'tenant' to 'project' in v2 doc  https://review.openstack.org/50781322:58
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openstackgerritMerged openstack/cinder master: Clean up api-ref index page  https://review.openstack.org/50795923:53
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