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samarendra | i want to understand what happens behind the scenes on cinder and inside the instance, when i try to attach or detach a volume to a nova instance. what docs/code/url should i look at ? | 00:40 |
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openstackgerrit | xing-yang proposed openstack/cinder master: Remove unused CG code https://review.openstack.org/446018 | 00:59 |
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openstackgerrit | Rick Chen proposed openstack/cinder master: Some server-side 'SSL' communication fails to check certificates https://review.openstack.org/442288 | 01:00 |
tommylikehu | hey anyone would like to take a look at these two doc patches? https://review.openstack.org/#/c/447404/ https://review.openstack.org/#/c/447362/ thanks in advance | 01:00 |
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openstackgerrit | Jeremy Zhang proposed openstack/os-brick master: Remove log translations https://review.openstack.org/447792 | 01:24 |
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openstackgerrit | wangxiyuan proposed openstack/cinder master: [doc] Update doc index https://review.openstack.org/448329 | 01:38 |
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openstackgerrit | wangxiyuan proposed openstack/cinder master: Add VolumeStatus enum field-Part(1) https://review.openstack.org/444734 | 01:41 |
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openstackgerrit | wanghao proposed openstack/cinder master: Introduce managing existing snapshot to rbd driver https://review.openstack.org/447986 | 02:02 |
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openstackgerrit | zhangdaolong proposed openstack/cinder master: When volume flatten time is too long, the state of the cinder-volume becomes down. https://review.openstack.org/448350 | 02:37 |
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openstackgerrit | wangxiyuan proposed openstack/cinder master: Add VolumeStatus enum field-Part(1) https://review.openstack.org/444734 | 03:05 |
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openstackgerrit | Merged openstack/cinder master: Fix cinder functional tests job https://review.openstack.org/445476 | 03:25 |
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openstackgerrit | zhangdaolong proposed openstack/cinder master: cinder-volume will be down for flattening volume https://review.openstack.org/448350 | 03:35 |
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openstackgerrit | wangxiyuan proposed openstack/cinder master: [doc] Update doc index https://review.openstack.org/448329 | 03:35 |
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openstackgerrit | liucheng proposed openstack/cinder master: Huawei: Record and check Snapshot wwn. https://review.openstack.org/448383 | 04:43 |
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openstackgerrit | TommyLike proposed openstack/cinder master: Change design of 'event_id' in user message https://review.openstack.org/448384 | 04:54 |
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openstackgerrit | Rick Chen proposed openstack/cinder master: Some server-side 'SSL' communication fails to check certificates https://review.openstack.org/442288 | 04:59 |
openstackgerrit | TommyLike proposed openstack/cinder master: Simplify 'event_id' in user message model https://review.openstack.org/448384 | 04:59 |
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openstackgerrit | TommyLike proposed openstack/cinder master: Simplify 'event_id' in user message model https://review.openstack.org/448384 | 05:02 |
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openstackgerrit | junboli proposed openstack/cinder master: replace references to cinder.openstack.org https://review.openstack.org/448392 | 05:46 |
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openstackgerrit | Pooja Jadhav proposed openstack/cinder master: Extracted HTTP response codes to constants https://review.openstack.org/426747 | 06:29 |
openstackgerrit | Pooja Jadhav proposed openstack/cinder master: Extracted HTTP response codes to constants https://review.openstack.org/426748 | 06:30 |
openstackgerrit | Pooja Jadhav proposed openstack/cinder master: Extracted HTTP response codes to constants https://review.openstack.org/426750 | 06:31 |
openstackgerrit | Pooja Jadhav proposed openstack/cinder master: Extracted HTTP response codes to constants https://review.openstack.org/434892 | 06:32 |
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openstackgerrit | Pooja Jadhav proposed openstack/cinder master: Extracted HTTP response codes to constants https://review.openstack.org/434895 | 06:36 |
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openstackgerrit | junboli proposed openstack/cinder master: Fixed inconsistent naming conventions https://review.openstack.org/448415 | 06:56 |
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openstackgerrit | wzyuliyang proposed openstack/cinder master: GreenPool for sha256 compute and upload to speed up chunked based volume backup https://review.openstack.org/444751 | 07:14 |
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openstackgerrit | Merged openstack/os-brick master: Remove log translations https://review.openstack.org/447792 | 08:14 |
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openstackgerrit | Silvan Kaiser proposed openstack/cinder master: Adds snapshot based backups for Quobyte volumes https://review.openstack.org/448462 | 09:23 |
openstackgerrit | Isaac Beckman proposed openstack/cinder master: XIV: switch to generic volume group https://review.openstack.org/448159 | 09:25 |
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openstackgerrit | wangxiyuan proposed openstack/cinder master: Update version show response example https://review.openstack.org/448469 | 09:36 |
openstackgerrit | wangxiyuan proposed openstack/cinder master: Update version show response example https://review.openstack.org/448469 | 09:37 |
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openstackgerrit | Lucian Petrut proposed openstack/cinder master: SMBFS: enable Nova assisted volume snapshots https://review.openstack.org/428789 | 09:40 |
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openstackgerrit | Béla Vancsics proposed openstack/cinder master: Use more specific asserts in tests https://review.openstack.org/433671 | 09:58 |
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openstackgerrit | TommyLike proposed openstack/cinder master: Simplify usage of 'event_id' in user message model https://review.openstack.org/448384 | 10:00 |
openstackgerrit | JohnnyChou proposed openstack/cinder master: Enhance Infortrend driver https://review.openstack.org/394284 | 10:01 |
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openstackgerrit | TommyLike proposed openstack/cinder master: Simplify usage of 'event_id' in user message model https://review.openstack.org/448384 | 10:03 |
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openstackgerrit | liucheng proposed openstack/cinder master: Huawei: Cinder driver support for ipv6 when attaching a volume to a VM. https://review.openstack.org/448487 | 10:24 |
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openstackgerrit | liucheng proposed openstack/cinder master: Huawei: Cinder driver support for ipv6 when attaching a volume to a VM. https://review.openstack.org/448487 | 10:25 |
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openstackgerrit | liucheng proposed openstack/cinder master: Huawei: Cinder driver support for ipv6 when attaching a volume to a VM. https://review.openstack.org/448487 | 10:34 |
openstackgerrit | liucheng proposed openstack/cinder master: Huawei: support for ipv6 https://review.openstack.org/448487 | 10:36 |
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openstackgerrit | Merged openstack/cinder master: replace references to cinder.openstack.org https://review.openstack.org/448392 | 11:16 |
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openstackgerrit | zhangdaolong proposed openstack/python-cinderclient master: Add description for function do_list_extensions in cinder client. https://review.openstack.org/448546 | 12:29 |
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openstackgerrit | Merged openstack/cinder master: [Doc] Add missing parameter in v3 resource documentation https://review.openstack.org/447362 | 12:58 |
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e0ne | smcginnis: hi. can we release new python-brick-cinderclient-ext? we've got 2 critical fixes merged | 13:52 |
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smcginnis | e0ne: Done yesterday. ;) | 13:55 |
smcginnis | https://pypi.python.org/pypi/python-brick-cinderclient-ext | 13:55 |
e0ne | smcginnis: great! thanks:) | 13:56 |
smcginnis | That was an easy one. :D | 13:56 |
jungleboyj | smcginnis: What other problems have you already solved? | 13:59 |
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smcginnis | jungleboyj: Hah! | 14:06 |
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abhi89 | xyang: Hi | 14:15 |
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jungleboyj | smcginnis: Did you see this? https://review.openstack.org/#/c/448384/5 | 14:21 |
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xyang1 | abhi89: hi | 14:22 |
abhi89 | xyang1: this is regarding https://review.openstack.org/#/c/446307/3 | 14:23 |
smcginnis | jungleboyj: Hadn't looked at that one yet. | 14:23 |
abhi89 | Can you please code-review it. | 14:24 |
xyang1 | abhi89: I'll take a look | 14:24 |
jungleboyj | smcginnis: I will admit I don't fully understand it, but seems like it is something that might require broader discussion. | 14:24 |
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abhi89 | actually i am a first time contributor. can you please tell me what else is missing there inorder to merge that change into openstack | 14:25 |
smcginnis | jungleboyj: Yeah, after just a quick skim, looks like it might. | 14:25 |
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xyang1 | abhi89: it looks good now | 14:27 |
jungleboyj | Ok, I will comment accordingly. Thanks for the input. | 14:29 |
abhi89 | xyang1: thanks | 14:29 |
xyang1 | abhi89: welcome | 14:29 |
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hemna | mep | 14:39 |
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hemna | e0ne, ping | 14:46 |
e0ne | hemna: morning | 14:46 |
hemna | hey man | 14:46 |
hemna | not sure if you saw my comments on https://review.openstack.org/#/c/427143/ | 14:47 |
hemna | I tested out the patch and it keeps complaining about asking for OS Password | 14:47 |
hemna | when you are using noauth, it shouldn't need a password :) | 14:47 |
e0ne | hemna: yes, thanks a lot for the testing! I'm working on a fix right now | 14:48 |
hemna | also, when I provided a password, it bitched that I didn't provide an auth url either | 14:48 |
hemna | e0ne, http://pastebin.com/vDtdkAUV | 14:49 |
e0ne | yes, I see | 14:49 |
e0ne | hemna: I hope to fix it by the EOD today | 14:49 |
hemna | ok np | 14:49 |
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openstackgerrit | Xinli Guan proposed openstack/cinder master: Adding new test case for InforTrend driver https://review.openstack.org/448622 | 14:54 |
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openstackgerrit | John Griffith proposed openstack/cinder-specs master: Propose use of generalized resource filtering https://review.openstack.org/441516 | 14:56 |
xinli | @smcginnis: thank you very much for code review regarding 338139, after talking to InforTrend dev, they suggest to add a new patch only for unit case, since no change needed in driver code, and close the bug. | 14:58 |
smcginnis | xinli: OK, great. | 14:58 |
jgriffith | e0ne :) | 14:59 |
jgriffith | e0ne I had the same problem yesterday *AFTER* giving you a +2 :( | 15:00 |
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tommylikehu_ | ping jgriffith | 15:09 |
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jgriffith | tommylikehu_ poing | 15:10 |
e0ne | jgriffith: I guess that's why you didn't give me +2/A :) | 15:11 |
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tommylikehu_ | hey jgriffith, please take a look at this one https://review.openstack.org/#/c/367110/ | 15:11 |
tommylikehu_ | I don't quite understand your -2 on this spec, I think the generic filtering would not cover my case, but of course we should implement this in the way you are proposing. | 15:11 |
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jgriffith | tommylikehu oh... yeah, because extra-specs aren't use facing data | 15:13 |
jgriffith | tommylikehu and it's not *generic* :) | 15:13 |
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jgriffith | tommylikehu so when I look at what you have there it seems more like you're duplicating or extending the internal capabilities filter | 15:14 |
jgriffith | tommylikehu but those capabilities are abstracted so I'm unsure of the value there, why not just use the Types filter? | 15:15 |
jgriffith | since the extra-specs will be associated with a type anyway? | 15:15 |
prashkre | smcginnis: Hi. Could you please review https://review.openstack.org/#/c/448379/ which is cherry picked from https://review.openstack.org/#/c/446199/ to back port the patch to ocata/stable branck | 15:17 |
prashkre | branch* | 15:17 |
prashkre | jungleboyj: Hi. Please review https://review.openstack.org/#/c/448379/ | 15:19 |
openstackgerrit | Ivan Kolodyazhny proposed openstack/python-cinderclient master: Fix noauth support https://review.openstack.org/427143 | 15:19 |
tommylikehu_ | what do you mean by 'why not use the types filter' | 15:20 |
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tommylikehu_ | jgriffith: I think I am proposing use type filter in that API :) | 15:20 |
jgriffith | tommylikehu but you can use types as a generic filter much easier | 15:20 |
jgriffith | much more easily | 15:20 |
smcginnis | Easierer? | 15:20 |
jgriffith | :) | 15:21 |
jgriffith | tommylikehu I guess I don't understand what you want to do here | 15:21 |
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jgriffith | Oh... filter on get-pools not the volume object | 15:21 |
jgriffith | sigh | 15:21 |
jgriffith | and your commit mesg explicitly states "pools filters by volume-types extra-spec" | 15:22 |
tommylikehu_ | jgriffith: ok, we have get-pools CLI, and I am proposing we could have API get-pools --type volume-type_1 | 15:22 |
jgriffith | so if what you mean is "pools fitler by volume-type" then that's very different | 15:22 |
tommylikehu_ | jgriffith: That's my bad | 15:22 |
jgriffith | sorry, that's why I was confused | 15:22 |
tommylikehu_ | jgriffith: yes, that's what I am proposing | 15:22 |
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jgriffith | and I'm not sure I understand the changes | 15:23 |
jgriffith | particularly the changes to the scheduler_stats | 15:23 |
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jgriffith | and host_manager | 15:23 |
tommylikehu_ | jgriffith: because we collect the pool states in the host_manager | 15:23 |
jgriffith | right... just a sec | 15:24 |
jgriffith | tommylikehu_ dang | 15:25 |
jgriffith | I thought we had some pool info in the db | 15:25 |
jgriffith | or wait... we do don't we? In the hosts table? | 15:25 |
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jgriffith | doesn't the pool show up as a unique backend? | 15:26 |
* jgriffith doesn't use that crazy pool nonsense :) | 15:26 | |
tommylikehu_ | we don't collect this infomation in the db, actually | 15:26 |
jgriffith | tommylikehu_ The fundamental problem I have with filters is when does it end? | 15:26 |
tommylikehu_ | we didn't since we have this api | 15:26 |
jgriffith | tommylikehu_ It's sort of like an all or nothing thing and it just grows indefinitely and I'm not sure of the value | 15:27 |
jgriffith | tommylikehu_ maybe this is important, but I think there's easier ways to get at the data | 15:27 |
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tommylikehu_ | hope winston-1 is here | 15:27 |
tommylikehu_ | cinder and manila both implement this in this way | 15:28 |
jgriffith | tommylikehu_ if there's not, maybe we should be storing some provider info on the volume as it pertains to the pool used on the assigned backend | 15:28 |
jgriffith | I don't really care what Manila does to be honest | 15:28 |
jgriffith | but anyway :) | 15:28 |
tommylikehu_ | jgriffith: lol | 15:28 |
jgriffith | tommylikehu_ so maybe I need to look at this some more and make sure I fully understand the use case and what you're trying to do | 15:29 |
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jgriffith | tommylikehu_ would you mind standing by for another day or so while I poke at it some more? | 15:29 |
jgriffith | I'll either have more questions/suggestions or remove my -2 (or both). :) | 15:29 |
tommylikehu_ | sure, this is the link for the spec: https://review.openstack.org/#/c/362747/ | 15:30 |
tommylikehu_ | jgriffith: hope it could work | 15:30 |
jgriffith | Ok, I will make sure I look at it today | 15:30 |
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jgriffith | Also if other cores are happy with the direction and think it's useful I can remove my objections based on that as well | 15:31 |
tommylikehu_ | jgriffith: just one more question about your generic filter spec. | 15:32 |
jgriffith | tommylikehu_ certainly | 15:32 |
tommylikehu_ | we already had different microversion for different resource filter | 15:32 |
jgriffith | tommylikehu_ sadly yes :( | 15:33 |
tommylikehu_ | jgriffith: what are you going to do in your one command filter xxxxxxx --xxxx | 15:33 |
jgriffith | tommylikehu_ ideally I'd like to bump all of the list calls in one microversion | 15:33 |
jgriffith | tommylikehu_ in reality I know that might not be realistic for every resource (as much as I'd like to) | 15:33 |
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jgriffith | tommylikehu_ so all resource list commands would get a new mv and would have a new mv associated with them | 15:34 |
jgriffith | tommylikehu_ does that make sense? | 15:34 |
tommylikehu_ | jgriffith: yeah | 15:34 |
jgriffith | tommylikehu_ do you think that's a horrible idea ;) | 15:34 |
tommylikehu_ | jgriffith: If you don't mind I have another question about filtering :( (why are always filtering, filtering) | 15:35 |
tommylikehu_ | jgriffith: that's not | 15:36 |
jgriffith | tommylikehu_ I know right!! That's what I'm saying... "filter filter filter" :) | 15:36 |
jgriffith | tommylikehu_ I'm going to create a filter in IRC and gerrit the filters out anything with the word "filter" in it :) | 15:36 |
tommylikehu_ | jgriffith: does this one make sense for you | 15:36 |
tommylikehu_ | https://review.openstack.org/#/c/442982/ | 15:36 |
jgriffith | Oh that one... | 15:37 |
jgriffith | I saw that | 15:37 |
tommylikehu_ | jgriffith: lol | 15:37 |
jgriffith | I dislike that quite a bit, so I didn't vote on it | 15:37 |
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jgriffith | it's not that I don't like what you did or how you did it | 15:37 |
jgriffith | I just don't like the concept | 15:37 |
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jgriffith | I find much of this filtering and especially reg-ex like filtering somewhat useless and difficult to maintain | 15:38 |
tommylikehu_ | jgriffith: not regex just like | 15:38 |
jgriffith | yeah, I followed the thread in there about reg-ex vs like etc | 15:38 |
tommylikehu_ | jgriffith: we could have this kind of requirement from administrator | 15:38 |
jgriffith | I know other projects do things like this, I just don't see the value in it for Cinder | 15:39 |
jgriffith | but rather than be "the guy" that just always says NO about filtering I thought I'd ignore it and let others make horrible choices :) | 15:39 |
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tommylikehu_ | jgriffith: if that is a horrible one, no one would like to vote :) | 15:40 |
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jgriffith | tommylikehu_ hmm... yeah, so I guess it turns into a bit of a stalemate, nobody wants to go out on the limb :) | 15:40 |
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tommylikehu_ | jgriffith: I'd like to ask for more advices, thanks | 15:41 |
jgriffith | tommylikehu_ so let me as you some questions on that one :) | 15:41 |
jgriffith | tommylikehu_ in the context of Cinder, is there really a compelling use case? And if so what is it? | 15:41 |
avishay | Hi all, I had a question on multi-attach. Is there any limit to the number of attachments per volume? Either an OpenStack limitation or specific backend? | 15:41 |
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jgriffith | tommylikehu_ I'm also of the opinion that a lot of this finer grained data manipulation should be done outside of cinder | 15:42 |
jgriffith | tommylikehu_ ie write an app or utility to customize all of these things to fit your needs | 15:42 |
tommylikehu_ | jgriffith: as said in the spec, the strongest use case is to maintain a large numbers of volumes | 15:42 |
jgriffith | tommylikehu_ the API is supposed to be a tool, in my opinion our API is already far more complex than it should be with WAY too many levers | 15:43 |
jgriffith | tommylikehu_ nahh.. that's not a concrete use case | 15:43 |
tommylikehu_ | jgriffith: we should consider the administrator don't want add more dependency | 15:43 |
jgriffith | that's a generalized statement that always gets thrown out "manage large numbers of *things*" | 15:43 |
jgriffith | tommylikehu_ sometimes people need to earn their pay :) | 15:43 |
tommylikehu_ | jgriffith: that's true for our product | 15:43 |
jgriffith | tommylikehu_ ok... joking aside | 15:44 |
tommylikehu_ | we do have many more volumes | 15:44 |
tommylikehu_ | jgriffith: ok' | 15:44 |
jgriffith | tommylikehu_ so what are you trying to query | 15:44 |
jgriffith | tommylikehu_ give me an example of what you would use this for and why | 15:44 |
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jgriffith | tommylikehu_ also... in the past I've suggested two alternatives that you may not have heard me rant about: | 15:44 |
tommylikehu_ | the administrator would name those volumes partly alike | 15:45 |
jgriffith | 1. go to the API directly and manipulate the data with std linux tools | 15:45 |
jgriffith | 2. implement a feature in cinderclient to return raw (or json) data | 15:45 |
jgriffith | then it's easy for an admin to do whatever they like | 15:45 |
jgriffith | tommylikehu_ name? | 15:45 |
jgriffith | huh? | 15:45 |
tommylikehu_ | jgriffith: why collect all the raw data if we only wanna some of them | 15:46 |
jgriffith | tommylikehu_ you still haven't told me which ones you want or why? | 15:46 |
jgriffith | My point being once you can filter on things like tenant, type, status etc... what are you still missing that you need trickery for? | 15:46 |
tommylikehu_ | jgriffith: let me read your words once again :) | 15:46 |
jgriffith | tommylikehu_ my words rarely make sense :) | 15:47 |
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jgriffith | tommylikehu_ you're example of filtering on name that is "like" is something I don't understand | 15:47 |
jgriffith | in terms of value add | 15:47 |
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jgriffith | names are not only optional, but completely arbitrary | 15:48 |
tommylikehu_ | jgriffith: I know why you think it's less useful | 15:48 |
tommylikehu_ | jgriffith: try to think the case the cinder is not only used in the cloud environment | 15:49 |
jgriffith | tommylikehu_ ok | 15:49 |
tommylikehu_ | so locate the volume by name would be a more common use case | 15:49 |
jgriffith | tommylikehu_ sure | 15:49 |
jgriffith | but we already let you get a volume by name | 15:50 |
jgriffith | tommylikehu_ what's the use case for name=foo* | 15:50 |
jgriffith | tommylikehu_ or are you thinking like somebody using a naming prefix for things to seperate them? | 15:50 |
jgriffith | like all volumes for a specific use case are named "foo-<some digit>" | 15:51 |
jgriffith | or something like that? | 15:51 |
tommylikehu_ | jgriffith: yeah | 15:51 |
jgriffith | tommylikehu_ yeah, so I can get that to an extent | 15:51 |
jgriffith | but I also know from experience it tends to end badly | 15:51 |
jgriffith | So my answer to that is use volume-metadata | 15:52 |
jgriffith | apply a metadata tag that says "application: xyz" | 15:52 |
jgriffith | it's more definitive and reliable anyway | 15:52 |
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tommylikehu_ | jgriffith: wish I could told the administrator to do so | 15:52 |
jgriffith | Yeah, I suppose once it's done it's too late | 15:53 |
jgriffith | tommylikehu_ ok, so I get the use case you're talking about and I certainly understand it | 15:53 |
jgriffith | tommylikehu_ I also understand and agree that it is a nice convenience function | 15:54 |
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tommylikehu_ | jgriffith: thanks | 15:54 |
jgriffith | I still have strong opinions about what an API should be | 15:54 |
jgriffith | but if as a community we want to keep adding convenience wrappers around API calls that's cool | 15:54 |
openstackgerrit | Merged openstack/python-cinderclient master: Update README.rst to remain consistent with python-cinderclient. https://review.openstack.org/445331 | 15:54 |
openstackgerrit | Merged openstack/cinder master: Added gigabyte unit to values in exception message https://review.openstack.org/446307 | 15:55 |
openstackgerrit | Merged openstack/cinder master: Set access_policy for messaging's dispatcher https://review.openstack.org/413446 | 15:55 |
tommylikehu_ | yes the *should* and *should not* stuff is quite depends on how the administrator use cinder. | 15:56 |
jgriffith | tommylikehu_ alright, I need to run and get a cup of coffee before the meeting :) | 15:56 |
jgriffith | tommylikehu_ thank you for talking through this with me | 15:57 |
scarlisle | Hello, I'm trying to get non-disruptive backups working in Mitaka. As the code is written, and based on the behavior I'm seeing, it looks like it can't create a temporary snapshot if I'm using the lvm driver. Is this correct? | 15:57 |
tommylikehu_ | jgriffith: thanks for sharing you time | 15:57 |
xyang1 | scarlisle: yes | 15:57 |
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scarlisle | xyang1: Thanks for answering! So the only option is the temporary clone? | 16:00 |
xyang1 | scarlisle: yes | 16:00 |
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xyang1 | scarlisle: I proposed to use temp snap for LVM, but got rejected during review because it could cause bugs | 16:01 |
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scarlisle | xyang1: could cause bugs or did cause bugs in testing? | 16:36 |
xyang1 | scarlisle: could cause bug because attach/detach lvm volume is already buggy | 16:36 |
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scarlisle | ahhh, gotcha. Thanks for clarifying xyang1! | 16:38 |
xyang1 | scarlisle: np | 16:39 |
openstackgerrit | Eric Young proposed openstack/cinder master: ScaleIO: Fixing support for SIO 1.3x https://review.openstack.org/448673 | 16:41 |
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samarendra | hi all. i want to understand what happens behind the scenes on cinder and inside the instance, when i try to attach or detach a volume to a nova instance. what docs/code/url should i look at ? | 16:52 |
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smcginnis | jgriffith: Do you still have that blog post? ^^ | 16:52 |
samarendra | also, i am using mitaka just in case there is a major change between versions | 16:54 |
jgriffith | smcginnis samarendra this might help: https://j-griffith.github.io/articles/2015-07/volume-attach-code-flow-in-cinder | 16:55 |
smcginnis | jgriffith: Thanks | 16:55 |
jgriffith | smcginnis samarendra I also merged that into the devref docs at one point I believe: https://docs.openstack.org/developer/cinder/devref/attach_detach_conventions.html | 16:55 |
samarendra | jgriffith: thanks for writing this! that's definitely a great starting point | 16:57 |
samarendra | smcginnis: thank you | 16:58 |
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tommylikehu_ | hey eharney | 17:00 |
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tommylikehu_ | eharney: I would like to bother you to take a look at this patch to ensure this one is exactly doing what are you proposing in your spec | 17:01 |
tommylikehu_ | https://review.openstack.org/#/c/446356/ | 17:01 |
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tommylikehu_ | ping jungleboyj | 17:02 |
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jungleboyj | tommylikehu_: Pong. | 17:03 |
tommylikehu_ | hey jungleboyj, I see your comments on this patch: https://review.openstack.org/#/c/448384/ | 17:04 |
tommylikehu_ | jungleboyj: so what's your first impression on this one? | 17:04 |
tommylikehu_ | do you have any other suggestion besides adding a spec | 17:04 |
tommylikehu_ | jungleboyj: I am not sure whether I express my concerns well in that commit message | 17:05 |
jungleboyj | Well, I talked to smcginnis about it a little bit. I don't fully understand it and I am concerned it could impact end users. | 17:06 |
jungleboyj | tommylikehu_: That was why I wanted more discussion, but maybe I just don't understand. | 17:06 |
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Swanson | cg groups are going away, right? So I can remove them from my driver when I add groups? | 17:08 |
tommylikehu_ | jungleboyj: ok, can you figure out which point? | 17:08 |
openstackgerrit | Ken'ichi Ohmichi proposed openstack/cinder master: Fix status_code of "list versions" API https://review.openstack.org/448289 | 17:10 |
jungleboyj | Yeah. I guess I don't understand from looking at the code what changes. Sorry. | 17:10 |
tommylikehu_ | jungleboyj: ok, I try to explain my thoughts here | 17:11 |
tommylikehu_ | https://github.com/openstack/cinder/blob/master/cinder/volume/manager.py#L1371 | 17:11 |
tommylikehu_ | this is what we usually do to add the user messages right> | 17:12 |
tommylikehu_ | we try to use if/else statement to add more explicit user messages | 17:12 |
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samarendra | jgriffith: where can i read more about what happens inside the nova instance? who handles what is returned by initialize_connection ? | 17:13 |
tommylikehu_ | but it's redundant and much complicated to maintain , because we chould have many different exceptions | 17:13 |
jgriffith | samarendra so I never wrote that side of things up :( | 17:13 |
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samarendra | oh | 17:13 |
jgriffith | samarendra what it does is fairly simple, how it does it.. .not so much | 17:13 |
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avishay | Hi all, I had a question on multi-attach. Is there any limit to the number of attachments per volume? Either an OpenStack limitation or specific backend limitation? | 17:13 |
jgriffith | samarendra in a nut shell, it connects the volume to the appropriate compute node | 17:14 |
tommylikehu_ | jungleboyj: so what I am proposing to take advantages of current exceptions, we can store the exception.messages into the database along with the user messages | 17:14 |
jgriffith | then passes that device file through to the instance using libvirts virt-io driver | 17:14 |
jgriffith | so the Instance just sees a raw block device | 17:14 |
ildikov | samarendra: here the attach process on a flow diagram: https://drive.google.com/file/d/0B1Kp6K43HLHyRkFMZHVHWDJ3amM/view?pref=2&pli=1 | 17:14 |
ildikov | samarendra: that might help | 17:15 |
jgriffith | ildikov ohhh... fancy :) | 17:15 |
tommylikehu_ | and then we don't need the event_id to indicate the erorr type, it could only indicate the action when the message happened. | 17:15 |
ildikov | jgriffith: hemna drew it, I'm just selling :) | 17:15 |
tommylikehu_ | jungleboyj: does that make a little sense? | 17:15 |
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ildikov | samarendra: we are about to change it though, plans are described in this Nova spec if you're interested in future directions too: https://review.openstack.org/#/c/373203/ | 17:17 |
jungleboyj | Oh .... Yeah ... | 17:17 |
samarendra | ildikov: that's quite a diagram! thanks. | 17:17 |
samarendra | will read the plans. | 17:17 |
jungleboyj | tommylikehu_: Yeah, that definitely needs more discussion because I think it is possible that vendors have tooling that uses those IDs. | 17:17 |
ildikov | samarendra: cool, np :) | 17:18 |
tommylikehu_ | jungleboyj: ok, I give up, | 17:18 |
jungleboyj | tommylikehu_: Sorry, don't give up. | 17:18 |
* tommylikehu_ is finding his dictionary and preparing another spec | 17:18 | |
jungleboyj | tommylikehu_: Hold on. Rather than writing a whole spec lets just discussion in next week's meeting and go from there. | 17:19 |
tommylikehu_ | jungleboyj: thanks. would like to | 17:19 |
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samarendra | so jgriffith ildikov: i guess my question is more into the libvirt(??) domain sine i am trying to understand what inside the instance acts on the received info about the raw block device. i am debugging an issue where the volume doesn't appear as a raw device to the OS inside. | 17:20 |
jungleboyj | tommylikehu: Yeah not trying to make things harder for you. Just need to get discussion and understanding on this before we go forward. | 17:22 |
jungleboyj | Is there a precedent for this change in other projects? | 17:22 |
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ildikov | samarendra: this is the related code in Nova: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L1177 | 17:25 |
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ildikov | samarendra: as for libvirt, I'm not sure this will lead you to solution at this point though | 17:26 |
ildikov | samarendra: I haven't played that much with that code | 17:26 |
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samarendra | ildikov: thanks for the code! i have a general debugging question too. is pdb as described on http://anteaya.info/blog/2013/01/16/who-are-you-and-what-are-you-going-to-do/ a good way to figure out if something in the cinder or nova is actually causing an issue and if something on the path from the cinder to iscsi missing some important working parts? | 17:27 |
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avishay | can anyone help please? :) | 17:28 |
smcginnis | avishay: Looking back... | 17:29 |
ildikov | samarendra: I personally haven't played with pdb yet, so I'm not the best person to answer the question, sorry :( | 17:29 |
avishay | smcginnis: question on multi-attach - is there any limit to the number of attachments per volume? Either an OpenStack limitation or specific backend limitation? | 17:29 |
smcginnis | avishay: I think that may be a specific backend limitation, though I don't know if Nova is going to enforce anything on their end. | 17:29 |
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avishay | i.e., can I create 200 volumes and attach each of those to 200 hosts? | 17:29 |
samarendra | ildikov: that's ok. thanks for the help. how do you debug the python code base btw? | 17:30 |
smcginnis | avishay: I know my storage can handle that, but I wouldn't be surprised if not all other ones could. | 17:30 |
avishay | smcginnis: so there's no inherent iSCSI/FC limitation I guess | 17:30 |
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smcginnis | avishay: Nothing inherent to those protocols, and as far as I remember, we haven't put a limitation enforcement in the cinder code. | 17:31 |
samarendra | jgriffith: and how do you debug the code too ? | 17:31 |
smcginnis | samarendra: I use pdb. | 17:32 |
smcginnis | samarendra: And/or lot's of LOG.info() statements. :) | 17:32 |
ildikov | samarendra: personally I don't touch code that much, so I usually play with the LOG messages, etc as I have an idea usually what might be the issue :) | 17:32 |
avishay | smcginnis: is that just for dell or also emc? i couldn't find any info on these limitations... | 17:32 |
ildikov | smcginnis: I'm with you on the second :) | 17:32 |
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smcginnis | avishay: Just talking strictly protocol. I don't know for every different backend. | 17:32 |
openstackgerrit | Ken'ichi Ohmichi proposed openstack/cinder master: Fix version numbers on media-types https://review.openstack.org/448312 | 17:33 |
smcginnis | avishay: But yes, Dell SC can handle that. | 17:33 |
smcginnis | ildikov: ;) | 17:33 |
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samarendra | smcginnis: ildikov: ok :) let me give both ways a try. | 17:34 |
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avishay | smcginnis: thanks! | 17:34 |
smcginnis | avishay: No problem. | 17:34 |
smcginnis | samarendra: Good luck! | 17:34 |
avishay | jgriffith: do you know if solidfire can handle 200 volumes and attach each of those to 200 hosts? | 17:35 |
jgriffith | avishay yes, and yes | 17:35 |
openstackgerrit | Merged openstack/cinder master: vzstorage: use resize instead of grow for ploop images https://review.openstack.org/400235 | 17:35 |
jgriffith | avishay assuming you're not on one of those archaic systems that doesn't support >256 luns that's not an issue | 17:36 |
jgriffith | avishay oh.. you said 200 hosts | 17:36 |
avishay | what archaic system for example? | 17:36 |
jgriffith | yeah.. no prob | 17:36 |
jgriffith | avishay so VMware IIRC used to have a 256 lun limit per ESX host | 17:36 |
smcginnis | avishay: Certain FC HBAs with older firmware won't recognize > 355 | 17:36 |
jgriffith | that's not what you were asking though after I reread | 17:36 |
smcginnis | 255 I mean! | 17:36 |
avishay | eek | 17:37 |
jgriffith | smcginnis I was gonna say :) | 17:37 |
avishay | well for my app there will be that many, but there will also be other attachments... so i need to see how many iscsi connections my OS can handle, right? | 17:37 |
Swanson | Let's add a nice and confusing arbitrary limit like, oh, 355! Perfect! No one will guess that! | 17:37 |
smcginnis | avishay: *most* modern OS's can handle it. | 17:38 |
jgriffith | avishay correct | 17:38 |
smcginnis | Swanson: ;) | 17:38 |
jgriffith | avishay and to @smcginnis if you're on something from this decade you should be just fine | 17:38 |
avishay | jgriffith smcginnis OK I will verify that - thanks! | 17:38 |
jgriffith | Swanson I would have said 318 | 17:38 |
smcginnis | jgriffith: Big "if" for some places I've seen. ;) | 17:38 |
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avishay | I was more concerned about specific appliances not supporting that many attachments per volume | 17:39 |
jgriffith | @smcginnis ok.. good (albeit sad) point :) | 17:39 |
jgriffith | avishay wait.. now you're talking per-volume? | 17:39 |
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Swanson | avishay, what? | 17:39 |
* jgriffith is confused | 17:39 | |
smcginnis | avishay: Why do I picture you doing some crazy IoT solution with this? :) | 17:39 |
avishay | yes, i said 200 volumes, EACH with attached to 200 hosts | 17:40 |
smcginnis | 200 volumes with 200 attachment seach. | 17:40 |
jgriffith | avishay DOH!!! | 17:40 |
jgriffith | avishay sigh | 17:40 |
avishay | smcginnis: crazy solution, not IoT :) | 17:40 |
jgriffith | avishay ok, for that I don't know | 17:40 |
Swanson | avishay, Oh, dear god, that might be interesting. | 17:40 |
jgriffith | but I can try and find out | 17:40 |
jgriffith | sorry I misunderstood | 17:40 |
avishay | would greatly appreciate it | 17:40 |
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avishay | avishay at stratoscale dot com if i'm not on | 17:41 |
smcginnis | avishay: I should caveat - I have no idea on performance with the overhead of managing so many sessions, but theoretically it should be possible. | 17:41 |
jgriffith | avishay will do | 17:41 |
Swanson | smcginnis, good luck | 17:41 |
avishay | smcginnis: good point... i'll see if reducing the amount of attachments is possible | 17:42 |
avishay | jgriffith: thanks! | 17:42 |
Swanson | avishay, This is basically a 200 host cluster? | 17:48 |
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avishay | Swanson: Yep. In addition to regular VMs and such, I have an application in mind where EACH host writes to a volume, and all other read. | 17:50 |
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openstackgerrit | Ken'ichi Ohmichi proposed openstack/cinder master: Remove XML description from media-types https://review.openstack.org/448733 | 18:02 |
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Swanson | avishay, We, Dell, would support that configuration on the SC. I have tested nothing of the sort in Cinder and no idea how it will perform. | 18:08 |
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avishay | Swanson: OK great to know - thanks! | 18:08 |
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waj334 | Integer or datetime.datetime for timestamp? | 19:40 |
waj334 | Or does this even matter? | 19:41 |
smcginnis | waj334: What is it used for? | 19:44 |
waj334 | Service capabilities | 19:44 |
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smcginnis | waj334: Guess I'd have to see, but you probably want to use oslo_utils.timeutils.utcnow | 19:46 |
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waj334 | smcginnis: That returns int type, so I'll just go with that | 19:47 |
smcginnis | +1 | 19:47 |
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openstackgerrit | Merged openstack/cinder master: Fix ut error of volume deletion https://review.openstack.org/446366 | 20:55 |
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openstackgerrit | Vivek Agrawal proposed openstack/cinder master: Implementation of cinder driver for Veritas HyperScale https://review.openstack.org/382097 | 21:16 |
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oomichi | can I get review on https://review.openstack.org/#/c/448289/ ? that is simple one, but good to get check on cinder side before merging the corresponding tempest test | 23:39 |
smcginnis | oomichi: I'll try to take a look. | 23:39 |
oomichi | smcginnis: thanks :) | 23:40 |
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