Tuesday, 2016-05-17

« Monday, 2016-05-16 Index Wednesday, 2016-05-18 »
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openstackgerritOpenStack Proposal Bot proposed openstack/glance: Updated from global requirements  https://review.openstack.org/31435102:56
openstackgerritOpenStack Proposal Bot proposed openstack/glance_store: Updated from global requirements  https://review.openstack.org/31717802:56
openstackgerritOpenStack Proposal Bot proposed openstack/python-glanceclient: Updated from global requirements  https://review.openstack.org/31718903:02
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openstackgerritvenkatamahesh proposed openstack/python-glanceclient: Update the home-page with developer documentation  https://review.openstack.org/31723404:28
openstackgerritOpenStack Proposal Bot proposed openstack/glance: Updated from global requirements  https://review.openstack.org/31435104:36
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openstackgerritYatin Kumbhare proposed openstack/python-glanceclient: Only install hacking in pep8  https://review.openstack.org/31725305:19
openstackgerritDarja Shakhray proposed openstack/python-glanceclient: Fix "Codec can't encode characters"  https://review.openstack.org/31605405:27
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openstackgerritvenkatamahesh proposed openstack/python-glanceclient: Update the home-page with developer documentation  https://review.openstack.org/31723412:34
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openstackgerritDarja Shakhray proposed openstack/python-glanceclient: Fix "Codec can't encode characters"  https://review.openstack.org/31605412:52
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openstackgerritDarja Shakhray proposed openstack/python-glanceclient: Fix "Codec can't encode characters"  https://review.openstack.org/31745213:09
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johnthetubaguymfedosin: nikhil: sudipto: I was just looking at the glance v2 nova spec13:30
johnthetubaguyI added a bunch of comments, it doesn't seem to match what I thought we agreed at the summit13:30
johnthetubaguylet me know if my comments make sense, I don't think its a massive change for most of them13:30
johnthetubaguyI had some questions on the image API proxy, and I don't remember where we landed on all those13:31
mfedosinjohnthetubaguy: hey! will look in a minute13:31
mfedosinlast implementation was chosen on discussion with Sean and Matt13:32
johnthetubaguymfedosin: cool, thanks, wanting to get this going ASAP, given the deadlines on this13:32
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mfedosinalso I wrote the code13:33
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mfedosinwithout unit tests at the moment13:33
johnthetubaguymfedosin: right, it could be me just miss-interpreting whats written13:33
johnthetubaguymfedosin: I think I had two worries, can we hide that properties:{} difference from our users, and we want use only glance_v2 off by default, till its tested in the gate, then we flip it to on by default, I thought13:35
sudiptojohnthetubaguy, i think the spec needs an update for the defaulting bit.13:36
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sudiptojohnthetubaguy, the recent code we have agreed on, keeps the use_v1 flag switched on to True - which is what you expect i believe.13:36
johnthetubaguysudipto: yeah, that sounds right13:37
johnthetubaguyonce its tested, we can switch it the other way13:37
johnthetubaguyand deprecate it13:37
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sudiptojohnthetubaguy, yeah - we plan on doing that. Also we have split the paths of V1 and V2 completely from one another and taken a hit on some code duplication. I was off the opinion of a base class, with subclasses on various versions of the glance API but Matt and Sean thought - it would lead to us refactoring some code that we would eventually drop.13:38
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johnthetubaguyyeah, that stuff seems to be in there13:39
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johnthetubaguywe need to optimise for deleting the old code, rather than code sharing13:39
sudiptojohnthetubaguy, about the difference in properties that you mention, I am wondering - if you could explain that with an example? Even though mfedosin is a better expert in answering that. The V1 supposedly can have a property duplicated between the base and custom - in such a case, you want that to be dealt with for the end user?13:41
johnthetubaguythat I don't mind about13:41
johnthetubaguyits the format of the extra properties13:41
johnthetubaguyassuming it could be stored in v2 and v1, I would like the response to be the same13:41
johnthetubaguyfor the stuff we can't do, thats OK13:41
sudiptoso you mean some sort of additional parsing work in the proxy to bring the v2 format similar to v1 right?13:42
sudiptoi am just making sure i understood it right.13:43
sudiptojohnthetubaguy, that is - the proxy would be aware of the schema and format the output as per in case of v2 right?13:43
johnthetubaguyso the images proxy needs to keep outputing things like the v1 API, even when talking to v213:44
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sudiptojohnthetubaguy, got it. mfedosin has ensured that I believe.13:48
sudiptojohnthetubaguy, I will update the spec as per - so that there's no confusion around it.13:48
mfedosinjohnthetubaguy: we convert glance v2 output to Nova image format13:48
johnthetubaguymfedosin: ah, cool, so I am just miss-reading what is there13:49
johnthetubaguymfedosin: sudipto: sounds like we all agree on the direction then, which is the main thing, just need to tidy up the spec a little to represent that13:50
mfedosinjohnthetubaguy: my bad :( I wrote it wrong in the spec. sorry for confusion13:50
sudiptojohnthetubaguy, yeah - we will get that done asap.13:50
johnthetubaguymfedosin: no worries13:50
johnthetubaguymfedosin: sudipto: the spec being wrong, but us all agreeing is certainly the better way around of those two :)13:51
sudiptojohnthetubaguy, :) updating the spec now...13:51
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mfedosinhere's the code https://review.openstack.org/#/c/316440/3/nova/image/glance.py@100013:52
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nikhiljohnthetubaguy: mfedosin sudipto : I asked few questions on the images response when nova is using v2 especially the details call13:54
nikhilI think the latest spec doesn't answer them13:54
sudiptonikhil, yeah i read through them...was going to talk to you about the same today, once you were up :-)13:54
nikhilAlso I had some concerns on the multiple image locations conf usage13:55
johnthetubaguymfedosin: yeah, that looks about right13:55
johnthetubaguynikhil: can you just turn that on by default, and deprecate that config in glance?13:55
nikhilsudipto: been up for a while, just busy on other things like import. Sorry.13:55
johnthetubaguynikhil: no is a valid response, I am just wondering why thats off by default13:55
nikhiljohnthetubaguy: you mean why the multiple image location is of by default?13:56
johnthetubaguynikhil: yeah13:56
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nikhiljohnthetubaguy: because it is insecure to expose to end users, or policies are non restrictive ATM13:57
johnthetubaguynikhil: can you just fix the policy, and make it on by default?13:57
nikhiljohnthetubaguy: also, there are other issues that I can share later13:57
johnthetubaguyOK13:57
johnthetubaguythis seems like a big sticking point13:57
johnthetubaguywe are forcing folks to deploy a *separate* glance v2 server for Nova vs public13:58
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nikhiljohnthetubaguy: yeah, I think Flavio proposed deprecating it and then using policies13:58
johnthetubaguynow large deploys already do that, but it seems bad making everyone doing that13:58
johnthetubaguynikhil: that sounds like a good approach to me13:58
johnthetubaguynikhil: thanks for the extra context there13:58
nikhiljohnthetubaguy: I think we all are very fussy on that locations approach13:59
jokke_that just won't work as long as we do not have service tokens or some other way to separate user makin the call or nova makin the call13:59
openstackgerritDarja Shakhray proposed openstack/python-glanceclient: Fix "Codec can't encode characters"  https://review.openstack.org/31605413:59
nikhiljohnthetubaguy: it is a leaky abstraction as per Stuart13:59
mfedosinabout v2->v1 output format. Here are code that tests it https://review.openstack.org/#/c/228578/41/nova/tests/unit/image/test_glance.py13:59
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nikhiljohnthetubaguy: it is a really bad usage within other services. Unfortunately the guy who proposed it never wrote a story that this is meant for admins to set location for faster boot times. There were other half baked attempts at accomplishing things that have divided ideologies now14:02
johnthetubaguyjokke_: yeah, that service token thing is needed, it sounded like that was getting a step closer, from what the keystone folks mentioned, although I honestly forget the details14:02
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johnthetubaguynikhil: AFAIK, ceph suport is our key usage14:02
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johnthetubaguynikhil: there is no data transfer for the ceph snapshot, its just done inside the array, and documented in glance, AFAIK14:03
nikhiljohnthetubaguy: correct, anyone who uses is doing it in a non standard way with less support guarantees14:03
openstackgerritOpenStack Proposal Bot proposed openstack/glance: Updated from global requirements  https://review.openstack.org/31435114:03
johnthetubaguynikhil: i.e. its critical for a large chunk of our users14:03
openstackgerritOpenStack Proposal Bot proposed openstack/glance_store: Updated from global requirements  https://review.openstack.org/31717814:03
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nikhiljohnthetubaguy: sure but I think the usgae pattern is incorrect14:03
nikhiljohnthetubaguy: we need better solutions with more data consistency14:04
johnthetubaguynikhil: agreed its horrible, just saying that use case is critical for a massive chunk of our users14:04
nikhiljohnthetubaguy: for example, today defcore has no story on what a interoprable image should look like14:05
nikhiljohnthetubaguy: they are talking about just APIs and thats fine for starters14:05
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nikhiljohnthetubaguy: but I don't want us to build something that will resultinto bad assumptions of who and what the users are for image API esp locations14:06
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johnthetubaguynikhil: we already have all that14:06
johnthetubaguynikhil: with our users relying on it14:06
nikhiljohnthetubaguy: for example, the size 0 image has already been brought up as an issue by one of the users who wanted to pull it down and create another14:06
nikhiljohnthetubaguy: sure, I think that's fine for the RBD snapshots today but it's a bad precedent is what I'm saying14:07
nikhiljohnthetubaguy: glance doesn't want to encourage more of that14:07
nikhilhence, an edge case14:07
jokke_nikhil: ++14:07
johnthetubaguynikhil: images are totally not interoperable today, I believe we should focus on common discoverability of base images, and bootstrapping, as thats a more cloudy use case, also we should be able to port data as additional disk, i.e. volumes to attach14:07
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johnthetubaguynikhil: I agree with you on your goals14:08
nikhiljohnthetubaguy: thanks for that note14:08
nikhiljohnthetubaguy: and I do agree that we do not have interoperable images14:08
nikhiljohnthetubaguy: but for a cloud wanting to get some recognized certification of interop images14:08
nikhiljohnthetubaguy: you know the name of that org14:09
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johnthetubaguyyeah, I much prefer to fix the use case of "get me the latest ubuntu 12.04 LTS image"14:09
sudiptonikhil, on the same note, what do you think we should do for size 0 images w.r.t the spec and your comment?14:09
openstackgerritOpenStack Proposal Bot proposed openstack/python-glanceclient: Updated from global requirements  https://review.openstack.org/31718914:09
sudiptothe discussion there is a bit inconclusive IMHO14:09
nikhilsudipto: no clue atm. need to go look more :/14:09
nikhilsudipto: for now, we just need to focus on porting to v214:10
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nikhilI think what johnthetubaguy and I are discussion is more about aligning what nova or other services use glance for14:10
nikhildiscussing*14:10
johnthetubaguyso zero size image is just metadata?14:10
nikhilcorrect14:10
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johnthetubaguyah, it might be boot with volume xyz, and nothing more I guess14:11
nikhiljohnthetubaguy: I do want to know more about the exact steps of the RBD snapshots for example a tech talk. the docs seem a bit too difficult to comprehence unless you know the ceph terminology14:11
johnthetubaguyI actually prefer that approach, compared to the current ceph snapshot approach, have something with volume attachements14:11
nikhiljohnthetubaguy: yes, it's for volumes14:11
nikhiljohnthetubaguy: and I don't because it's not an image then!14:12
johnthetubaguynikhil: ceph does a snapshot, then uploads a reference to that snapshotted disk right?14:12
johnthetubaguynikhil: well it references everything you need to boot the disks of an instance, and generally references imutable objects (volume snapshots)14:13
nikhiljohnthetubaguy: well, they take a snapshot, upload to one of the pools, flatten it (assuming it's like coalescing on the ceph server) and then link the location of that image.14:13
nikhiljohnthetubaguy: but can you pull those down as an end user?14:13
nikhiljohnthetubaguy: for example, as an end user how can I differentiate between the two?14:13
nikhil(just rely on the operator properties?)14:14
johnthetubaguynot sure what you mean about flatten it14:14
johnthetubaguyI don't think they do that14:14
nikhilme neither14:14
johnthetubaguythere is no need for them to do that, AFAIK14:14
nikhiljohnthetubaguy: http://specs.openstack.org/openstack/nova-specs/specs/mitaka/implemented/rbd-instance-snapshots.html#proposed-change14:14
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johnthetubaguynikhil: ah, I see, they make it independent, interesting14:15
nikhilit's a bit, awkward14:15
nikhilalso, I dunno if that's racy too14:16
nikhilwhat if two instances are running the same vol?14:16
johnthetubaguyyou are not allowed to do that14:16
nikhilgood then!14:16
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johnthetubaguyalthough cinder multi-attach is going in that direction, but it doesn't affect this other route14:17
nikhilahk14:17
johnthetubaguynikhil: I think a lot of this boils down to getting that service token stuff sorted, as jokke_ mentioned14:19
nikhiljohnthetubaguy: surely, but then we are building on assumptions of 3 services (whereas 2 atm) :-)14:20
johnthetubaguynikhil: we already depend on keystone14:20
nikhiljohnthetubaguy: a few deployments say who use keystone v1 won't be able to use that but that's okay ;-)14:20
johnthetubaguykeystone 3 only is the way everything is going right now14:21
nikhiljohnthetubaguy: noted14:21
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openstackgerritDarja Shakhray proposed openstack/glance-specs: Add transaction layer  https://review.openstack.org/31548315:19
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openstackgerritKairat Kushaev proposed openstack/glance: Remove verbose option from glance tests  https://review.openstack.org/31757915:30
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openstackgerritAlexis Lee proposed openstack/glance: Remove 'verbose' option  https://review.openstack.org/31758615:47
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openstackgerritBrian Rosmaita proposed openstack/glance: WADL to RST migration (part 1)  https://review.openstack.org/31225918:42
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harlowjanikhil  since i'm not aware, and u might have a TLDR version of it, whats the 'jist' of the status on https://specs.openstack.org/openstack/glance-specs/specs/kilo/catalog-index-service.html19:48
harlowjaand yes, if u have reference material, that's cool, i'm just sorta dumb in where that's at :-P19:48
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nikhilharlowja: all that is SearchLight now19:50
nikhilharlowja: 100% out of glance and new project19:51
nikhilharlowja: you need more info? :-)19:51
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nikhilI know large clouds like that stuff19:51
harlowjaya, someone was saying i want a way to boot a thing with 'latest:cent7' and someone was like u could hack the api to do this19:52
harlowjaand i was like, eck19:52
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harlowjaand then i remembered catalog stuffs19:52
harlowjaand then i ended up here, lol19:52
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nikhilharlowja: gotcha, well it's not necessarily what you want with the latest cent stuff19:53
nikhilthough you could do that19:53
nikhilharlowja: latest cent stuff needs versioning :/ we don't do that in glance19:53
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harlowjaya, its like basic search over image properties19:54
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nikhilk19:54
harlowjasearchlight though seems like the bigger thing, not a tiny search over image properties right?19:54
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nikhilharlowja: correct, a full elastic search deployment that indexes using APIs19:58
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nikhilharlowja: you will need the full setup, prolly not what you are looking for a quick solution19:58
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nikhilharlowja: the latest cent image is actually a common ask but most ops have their own way and filter in own way :-)19:59
nikhilrosmaita: another customer on the latest image stuff ^19:59
harlowjaya19:59
harlowjanova boot has20:00
harlowja  --image-with <key=value>      Image metadata property (see 'nova image-20:00
harlowja                                show').20:00
harlowjabut i think that's client-side20:00
harlowja(from what i remember)20:00
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harlowjanikhil i suppose a tiny property filtering DSL that the API takes would be out of the question?20:06
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nikhilharlowja: it's tough20:10
harlowja:)20:10
nikhilharlowja: because it's not indexed and can't be20:11
nikhilharlowja: as they are arbitraty key pairs20:11
harlowjarigh20:11
harlowja*right20:11
nikhilwe could think of coming with a standard properties20:11
nikhilbut that will be *really* tough20:11
nikhilas people will already have something working20:11
nikhiland client facing that they do not want to change20:11
harlowjaright20:12
harlowjaor i guess u make the DSL powerful enough to search over arbitrary properties20:12
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harlowjaand accept that it may be slow (due to non-indexing)20:13
harlowjamy guess is something like this has been proposed somewhere before :-P20:14
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nikhilharlowja: yeah :)20:17
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nikhilbeen proposed20:17
harlowjalikely just died i suppose :-/20:18
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nikhilharlowja: it's unfriendly20:18
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harlowja??20:36
harlowjanikhil  how so20:37
nikhilharlowja: there's not DSL, we don't want DSL :P20:39
nikhilharlowja: we want to avoid filtering on arbitrary image props that are stored on a diff table on the glance DB that has a join with image tables20:40
nikhilharlowja: you are looking at a near full table scan if you allow this type of search20:40
harlowjaunderstood20:40
nikhilharlowja: by default image list is very slow, we don't want to encourage more20:40
harlowjafair enough, ya, i get that20:40
nikhil:)20:41
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