Tuesday, 2015-04-28

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openstackgerritThang Pham proposed openstack/cinder: WIP: Conversion to volume object  https://review.openstack.org/17705400:46
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openstackgerritThang Pham proposed openstack/cinder: WIP: Conversion to volume object  https://review.openstack.org/17705401:52
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jacksmionip cloak02:32
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rushiagrthingee: sorry for the late reply. I was away from work for a few days06:15
rushiagrthingee: yes, I'm going to be at the summit06:16
* rushiagr sees thingee's comment on the etherpad06:16
rushiagrthingee: I was going to ask the same, but just didn't find time -- would it make more sense for it to be a fishbowl session06:17
rushiagrthingee: I'll just move it to fishbowl session section06:17
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rushiagrdone06:23
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openstackgerritRushi Agrawal proposed openstack/cinder-specs: Snapshot sharing  https://review.openstack.org/17377906:43
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openstackgerritTina Tang proposed openstack/cinder: Create consistgroup from cgsnapshot support in VNX driver  https://review.openstack.org/16370608:00
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openstackgerritXi Yang proposed openstack/cinder: VNX Cinder driver Over Subscription Support  https://review.openstack.org/17730108:40
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geguileoDuncanT: ping09:28
DuncanTgeguileo: Ho09:30
DuncanTHi even09:30
geguileoXD09:30
geguileoDuncanT: Do you remember we discussed some tests regarding the atomic state changes?09:30
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DuncanTYes09:30
geguileoThey are done: https://github.com/Akrog/test-cinder-atomic-states09:31
DuncanTAwesome! Looking now09:32
DuncanTThanks!09:32
geguileoShould I add it to the Etherpad for easier reference?09:32
e0neDuncanT: hi. not sure how we could implement proposed changes to REST API for https://review.openstack.org/#/c/174823/. could you please take a look on it once more if you have a time?09:34
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DuncanTe0ne: I'll take another look09:51
DuncanTgeguileo: Defintiely add a link to the etherpad, please09:51
e0neDuncanT: thanks09:51
geguileoDuncanT: Ok09:51
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DuncanTgeguileo: This is great stuff!09:53
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geguileoDuncanT: Thanks, it has been quite enlighting doing the tests  :-)09:54
DuncanTSome of these numbers are very informative, though worrying as hell09:57
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geguileoDuncanT: Well, I think some of those numbers are for situations that are more than unlikely to happen10:08
geguileoDuncanT: I don't think there will be constant fights over the same resource10:08
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DuncanTgeguileo: Even the one worker per row numbers suggest that fine grained state can't really be managed with any of these methods10:13
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DuncanTgeguileo: It does give us fairly solid evidence that the db approach is a good place to start10:15
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geguileoDuncanT: I agree, it's more like choosing the least bad solution10:16
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geguileoDuncanT: Although, update with where is not THAT bad10:17
DuncanTgeguileo: It might also be a sign that we should look at ways of changing our API to allow looser coupling where possible (I've not spotted many opportunities for that in cinder) or else look at a different H/A model for cinder-volume and manage more state locally on c-vol10:18
DuncanTgeguileo: There are designs for micro-states that require 12 or more state changes for create alone. These numbers make it quote clear we can't do that with any of the solutions you tried10:18
geguileoDuncanT: But why would you need that many micro-states if you know only 1 will be able to change it?10:19
DuncanTgeguileo: So that things like delete-while-creating work10:20
DuncanTgeguileo: And task resumption using states10:20
geguileoDuncanT: I see. Do we have a spec for those states?10:21
geguileoDuncanT: I'd like to give it a thought10:21
DuncanTgeguileo: Basically I mapped all of the individual bits of work that go into create (e.g. sending the message from c-api to c-shed is 3 to cover the lost message case)10:21
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DuncanTNo full spec, no10:21
geguileoDuncanT: Or an email/post/IRC log10:22
geguileoDuncanT: Anywhere outside your head  ;-)10:22
DuncanTgeguileo: You benchmarks make it quite evident that using that fine grained a state with our current design is not possible10:24
dulekgeguileo: Is update_with_where.py based on Nova's code?10:24
DuncanTgeguileo: I've got a rough draft of the state table somewhere, I'll send it on to you10:24
dulekgeguileo: I have an impression that in Nova they just make a transaction, do SELECT, then check states and if state doesn't match the expected one - raise an exception.10:24
dulekgeguileo: https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/api.py#L249010:24
DuncanTgeguileo: There was a whiteboard at the Fort Colins mid-cycle :-) I've got something written down somewhere, I'm looking for it10:24
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geguileoDuncanT: I'm trying to understand that code...10:30
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geguileoDuncanT: I just can't see how they are preventing issues related to replication delays10:43
geguileoDuncanT: I believe that code can fail10:43
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DuncanTgeguileo: Hop onto the nova channel and ask there I guess?10:43
DuncanTgeguileo: git blame should give you an idea who to talk to10:44
DuncanTPopping out for lunch, back in a bit10:45
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openstackgerritMarc Koderer proposed openstack/cinder: Port block_device driver to use new driver model  https://review.openstack.org/16067411:06
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openstackgerritwanghao proposed openstack/cinder: Implement function to import/export snapshots  https://review.openstack.org/14459011:31
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openstackgerritwanghao proposed openstack/cinder-specs: Adds support to force-delete backups  https://review.openstack.org/9832511:57
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openstackgerritwanghao proposed openstack/cinder-specs: Adds support to force-delete backups  https://review.openstack.org/9832512:09
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-openstackstatus- NOTICE: Gate is experiencing epic failures due to issues with mirrors, work is underway to mitigate and return to normal levels of sanity12:40
*** ChanServ changes topic to "Gate is experiencing epic failures due to issues with mirrors, work is underway to mitigate and return to normal levels of sanity"12:40
akerr_epic failures = technical term?12:41
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openstackgerritAlon Marx proposed openstack/cinder: Add Multi-connection support to XIV  https://review.openstack.org/17518612:47
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openstackgerritBharat Kumar Kobagana proposed openstack/cinder: Acquire lock when copy image to volume  https://review.openstack.org/17820213:49
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openstackgerritMichal Dulko proposed openstack/cinder-specs: Integrate persistence support of TaskFlow  https://review.openstack.org/14787914:48
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-openstackstatus- NOTICE: gerrit has been restarted to clear an issue with its event stream. any change events between 14:43-15:30 utc should be rechecked or have their approval votes reapplied to trigger jobs15:36
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hemnasmcginnis, jungleboyj, jgriffith, xyang - Updated slide deck for the FC preso https://www.dropbox.com/s/khdc2rn3zp5y61g/FCPastPresentVancouver.pptx?dl=015:48
hemnathe outline is here https://etherpad.openstack.org/p/vancouver_fc_in_openstack15:48
smcginnishemna: Thanks! I'll take a look.15:48
hemnaI updated my 2 slides and reworked the deck15:48
hemnasmcginnis, imported your slide into it.15:48
smcginnishemna: Awesome. Did it import OK without too much fixing up>15:49
hemnahad to fix some of the shadows on the fonts in the boxes15:49
hemnakurt is working on his slide15:49
hemnaI have one more slide to work on (Future of FC stuffs)15:49
smcginnishemna: Oh no, my shadows won't be right. :P15:50
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hemnahehe15:50
jungleboyjhemna: Cool, I will take a look.  Are you waiting for content from me?15:50
rhe00_hemna: I will my slide done as well15:51
hemnajungleboyj, yah, need a slide on your FC drivers15:51
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jungleboyjhemna: Ok.  Will work on getting that to you this week.15:51
smcginnisjungleboyj: See slide 10 for what I ended up doing.15:51
hemnaKurt is doing 2 slides.   FC driver history/requirements, and 3PAR driver slide, then will hand off to the next person in line15:51
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hemnaI think we are trying to do 1 slide per vendor for their FC efforts15:52
hemnathe os-brick global reqs patch still hasn't gotten reviews15:53
hemna*Sigh*15:53
hemnaguess they are busy ?15:53
smcginnishemna: Which one is that?15:53
hemnahttps://review.openstack.org/#/c/177372/15:54
smcginnisPlenty of +1's at least.15:54
hemnamy cinder and nova patches are blocked waiting for that guy to land15:54
hemnayah +115:54
hemnawas hoping that'd help get the attention15:55
smcginnisAs long as it doesn't take two releases and get pushed in at the very end. :P15:55
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hemnaheh yah15:56
hemnasmcginnis, thanks for the comment.  should be fixed now15:59
smcginnishemna: I see a few other small things, but we can iron those out once we have everything in place.15:59
hemnalooks like slide 4 is chopped at the top15:59
hemnagoing to fix that15:59
smcginnishemna: Nie dropbox user name. ;)16:00
smcginnishemna: Yeah, noticed that too.16:00
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hemnaok 4 is fixed16:01
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hemnasome of the formatting like that one got nuked when I had to switch to 16:916:01
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openstackgerritEric Harney proposed openstack/cinder: WIP: POC for RBD thin provisioning accounting  https://review.openstack.org/17826216:01
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smcginnisOh well, better now than 5 minutes before the presentation.16:02
hemnayup!16:02
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e0neeharney: hi. according your patch. https://github.com/eharney/cinder/commit/ea63518ea#diff-439c80f9f706c9c6c8fe90266cde5c40R363 - this things could be very slow with a large number of volumes16:08
e0neeharney: but i didn't find anything more for it in librbdpy api:(16:09
eharneye0ne: yeah, this is a concern of mine too16:09
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e0neeharney: may be a stupid idea: can we get needed info by exec one cli command?16:11
eharneye0ne: i'm not sure if that exists, but it would be nice16:12
e0nelet me check16:12
e0ne'rbd ls' provides only names16:13
e0neeharney: http://paste.openstack.org/show/210418/16:13
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eharneye0ne: hmm, looks promising if that's quicker16:16
avishay__hemna: is my pip install brick ready? :)16:16
hemnaavishay__, yes16:16
hemnaavishay__, it should work :)16:16
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avishayhemna: how do i get it?16:17
hemnapip install os-brick16:17
hemnashould work16:17
e0neeharney: not sure that it provides all needed info. can't check right now - i've got only devstack with 2gb storage16:17
avishayhemna: niiiiiiiiice16:17
avishayhemna: mazal tov, nice work16:17
hemna!16:17
hemnaw00t!16:17
hemnathanks man.16:18
eharneye0ne: well all that's needed is the logical size of the object... i can play with this and see where it ends up16:18
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e0neeharney: i check it once i'll my env with ceph working16:23
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e0neeharney: http://paste.openstack.org/show/210444/ - found real used size16:39
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eharneye0ne: but real used size is the opposite of what i want here16:39
e0neeharney: sure, it isn't needed for our case16:40
e0nei'm sorry for confusing you16:40
openstackgerritDoug Hellmann proposed openstack/cinder: Drop use of 'oslo' namespace package.  https://review.openstack.org/17828116:47
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openstackgerritJoshua Huber proposed openstack/cinder: blueprint blockbridge-eps-driver  https://review.openstack.org/17829517:14
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openstackgerritVilobh Meshram proposed openstack/cinder-specs: Nested Quota Driver  https://review.openstack.org/17314118:22
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openstackgerritDiem Tran proposed openstack/cinder: This reverts commit c742566.  https://review.openstack.org/17831918:33
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openstackgerritDiem Tran proposed openstack/cinder: Re-integrate Oracle iSCSI Cinder driver  https://review.openstack.org/17831918:57
openstackgerritxing-yang proposed openstack/cinder: Clean up failed clones in VMAX driver  https://review.openstack.org/17751718:57
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openstackgerritxing-yang proposed openstack/cinder: Fix a problem with FAST support in VMAX driver  https://review.openstack.org/17000019:13
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openstackgerritxing-yang proposed openstack/cinder: Clean up failed clones in VMAX driver  https://review.openstack.org/17751719:18
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openstackgerritRajini Ram proposed openstack/cinder: Fixes the retries on Network Connection Error  https://review.openstack.org/17173619:20
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rasoto_hello all20:15
rasoto_is there a list of special characters that cannot be included in the cinder.con file? I am trying to add a password but the '$' apparently is giving us problem20:15
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dimsrasoto_: that should be the only one. escape using \$  or you can use $$20:38
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rasoto_dims: ty, do you know if the ' " , # are accepted?20:46
dimsyes rasoto_ afaik - https://docs.python.org/2/library/string.html#template-strings20:47
rasoto_great, ty dims :)20:47
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openstackgerritDiem Tran proposed openstack/cinder: Re-integrate Oracle iSCSI Cinder driver  https://review.openstack.org/17831920:51
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openstackgerritYucong Feng proposed openstack/cinder: Removing sleep between when a command is sent and 'YES' is sent  https://review.openstack.org/17733521:27
jamielennoxthingee: did you do a review with that add_discovery_hack? it should fix all the log spewing21:28
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thingeejamielennox: yeah actually about ready to post a review, thanks21:29
jamielennoxthingee: cool, people see keystoneclient messages in logs and they come blaming me :)21:29
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thingee:)21:30
thingeeall part of my plan21:30
openstackgerritOpenStack Proposal Bot proposed openstack/cinder: Updated from global requirements  https://review.openstack.org/17841021:35
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mtreinishjamielennox: well it is your fault21:41
mtreinish3.3M warnings in 10days all with keystone middleware in the name, who else are we supposed to blame :)21:41
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mtreinishoh, you meant the other one didn't you? Not the c-api warning messages on every api request21:46
jamielennoxmtreinish: right the cinder one is the can't discover endpoint something (i've lost the window)21:47
jamielennoxi'm not sure what's happening with the c-api21:47
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mtreinishthingee: you might want to be in #openstack-qa22:01
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uberjaycan someone explain to me how tox selects what python to use when building a virtual environment? the py27 env is picking up python2.7, but the pep8 env is getting 2.6, which causes the flake8 tests to fail in a number of places. (invalid syntax exceptions)  (to see the output for each env setup: http://paste.openstack.org/show/210874/ )22:12
openstackgerritMike Perez proposed openstack/python-cinderclient: Add version removal rule to stop discovery warning  https://review.openstack.org/17843922:12
thingeejamielennox: ^22:13
thingeejgriffith: ^22:13
uberjayi'm (unfortunately) running this on a centos 6.6 machine, and python2.7 is installed alongside the original system 2.6 installation. (using software collections)22:14
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jamielennoxthingee: -122:15
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openstackgerritDoug Hellmann proposed openstack/os-brick: Drop use of 'oslo' namespace package  https://review.openstack.org/17844422:26
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openstackgerritJamie Lennox proposed openstack/python-cinderclient: Add version removal rule to stop discovery warning  https://review.openstack.org/17843922:28
jamielennoxthingee: as it seems pressing, i made the change and re-proposed - hope you don't mind ^22:28
thingeeOf course not. I was just moving things to client.py and testing things to make sure we're ok22:29
thingeethanks22:29
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openstackgerritMatthew Treinish proposed openstack/cinder: WIP: Test for api replays  https://review.openstack.org/17844522:40
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openstackgerritMatthew Treinish proposed openstack/cinder: WIP: Test for api replays  https://review.openstack.org/17844523:12
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openstackgerritMatthew Treinish proposed openstack/cinder: WIP: Test for api replays  https://review.openstack.org/17844523:22
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openstackgerritJamie Lennox proposed openstack/python-cinderclient: Add version removal rule to stop discovery warning  https://review.openstack.org/17843923:29
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