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| openstackgerrit | Kurt Martin proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 00:10 |
|---|---|---|
| openstackgerrit | Kurt Martin proposed openstack/cinder: 3PAR: Implement v2 replication (unmanaged) https://review.openstack.org/231245 | 00:10 |
| openstackgerrit | Kurt Martin proposed openstack/cinder: Disable capabilities based on 3PAR licenses https://review.openstack.org/258728 | 00:10 |
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| openstackgerrit | Anthony Lee proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 00:32 |
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| openstackgerrit | Patrick East proposed openstack/cinder: Add config option to enable reporting discard https://review.openstack.org/258747 | 01:19 |
| openstackgerrit | ZTE cinder2 CI proposed openstack/cinder: add zte cinder driver https://review.openstack.org/258748 | 01:19 |
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| openstackgerrit | wanghao proposed openstack/cinder: Backup tenant attribute support https://review.openstack.org/258374 | 01:59 |
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| openstackgerrit | Peter Wang proposed openstack/cinder: Fix migration start failure in VNX driver https://review.openstack.org/258294 | 02:43 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (mirror) https://review.openstack.org/249042 | 04:14 |
| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (split IO) https://review.openstack.org/237387 | 04:14 |
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| openstackgerrit | Merged openstack/cinder: Check backup service before backup delete https://review.openstack.org/246498 | 04:28 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (mirror) https://review.openstack.org/249042 | 04:37 |
| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (split IO) https://review.openstack.org/237387 | 04:37 |
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| openstackgerrit | Peter Wang proposed openstack/cinder: VNX: Replication V2 support(managed) https://review.openstack.org/256246 | 05:07 |
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| openstackgerrit | Peter Wang proposed openstack/cinder: VNX: Replication V2 support(managed) https://review.openstack.org/256246 | 05:08 |
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| openstackgerrit | Peter Wang proposed openstack/cinder: VNX: Replication V2 support(managed) https://review.openstack.org/256246 | 05:56 |
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| openstackgerrit | OpenStack Proposal Bot proposed openstack/cinder: Imported Translations from Zanata https://review.openstack.org/258820 | 06:24 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (mirror) https://review.openstack.org/249042 | 06:49 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (mirror) https://review.openstack.org/249042 | 06:53 |
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| openstackgerrit | wanghao proposed openstack/cinder-specs: Uploading volume to specific image https://review.openstack.org/258310 | 07:14 |
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| openstackgerrit | wanghao proposed openstack/cinder: Backup tenant attribute support https://review.openstack.org/258374 | 07:35 |
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| openstackgerrit | wanghao proposed openstack/cinder-specs: Uploading volume to specific image https://review.openstack.org/258310 | 08:10 |
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| openstackgerrit | Vincent Hou proposed openstack/cinder: Storwize: Implement v2 replication (mirror) https://review.openstack.org/249042 | 08:18 |
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| openstackgerrit | wanghao proposed openstack/cinder: Backup tenant attribute support https://review.openstack.org/258374 | 08:36 |
| GK__ | observing Cinder volume deleting issue | 08:36 |
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| vincent_hou | geguileo: I am working on the approach to optimize the source volume attachment during host assisted migration. https://review.openstack.org/#/c/250220. Please help me with your comments. | 08:50 |
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| geguileo | vincent_hou: Will do! | 08:53 |
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| openstackgerrit | yifan403 proposed openstack/cinder: add zte cinder driver and unit test file. https://review.openstack.org/258880 | 08:58 |
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| openstackgerrit | Takeshi Nishikawa proposed openstack/cinder: Rebrand HP XP driver to now be HPE https://review.openstack.org/251695 | 09:15 |
| openstackgerrit | Peter Wang proposed openstack/cinder: VNX: Replication V2 support(managed) https://review.openstack.org/256246 | 09:16 |
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| openstackgerrit | Alessandro Pilotti proposed openstack/cinder: Replaces WMI requirement with PyMI https://review.openstack.org/256614 | 09:28 |
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| openstackgerrit | Kazumasa Nomura proposed openstack/cinder: Refactor Hitachi Block Storage Driver https://review.openstack.org/255239 | 09:49 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Check min config requirements for rbd driver https://review.openstack.org/258910 | 09:57 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Small refactoring in test_admin_actions.py https://review.openstack.org/253541 | 10:01 |
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| openstackgerrit | Szymon Wróblewski proposed openstack/cinder: Tooz locks https://review.openstack.org/183537 | 10:29 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Check min config requirements for rbd driver https://review.openstack.org/258910 | 10:44 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Check min config requirements for rbd driver https://review.openstack.org/258910 | 10:47 |
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| openstackgerrit | Vipin Balachandran proposed openstack/cinder: VMware: Add support for VVOL datastores https://review.openstack.org/258945 | 10:57 |
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| openstackgerrit | Merged openstack/cinder: Add volume_extensions:quotas:delete to policy.json https://review.openstack.org/258569 | 11:02 |
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| openstackgerrit | Kazumasa Nomura proposed openstack/cinder: Refactor Hitachi Block Storage Driver https://review.openstack.org/255239 | 11:13 |
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| openstackgerrit | Ivan Kolodyazhny proposed openstack/cinder: Remove downgrade migrations https://review.openstack.org/258959 | 11:23 |
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| openstackgerrit | wanghao proposed openstack/cinder: Backup tenant attribute support https://review.openstack.org/258374 | 11:32 |
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| openstackgerrit | Vipin Balachandran proposed openstack/cinder: VMware: Add support for VVOL datastores https://review.openstack.org/258945 | 11:34 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Check min config requirements for rbd driver https://review.openstack.org/258910 | 11:36 |
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| openstackgerrit | Yuriy Nesenenko proposed openstack/cinder: Check min config requirements for rbd driver https://review.openstack.org/258910 | 11:42 |
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| openstackgerrit | Ivan Kolodyazhny proposed openstack/python-cinderclient: Do not require functional_creds.conf for functional tests https://review.openstack.org/245933 | 11:45 |
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| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - Fix for last volume in VMAX3 storage group https://review.openstack.org/244331 | 11:51 |
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| openstackgerrit | dongwenjuan proposed openstack/cinder-specs: Add ServiceGroup using Tooz driver https://review.openstack.org/258968 | 11:57 |
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| openstackgerrit | Ivan Kolodyazhny proposed openstack/cinder: Remove downgrade migrations https://review.openstack.org/258959 | 12:06 |
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| openstackgerrit | Shay Halsband proposed openstack/cinder: XtremIO add support for create CG from CG src https://review.openstack.org/245548 | 12:59 |
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| sheel | dulek:hi | 13:20 |
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| openstackgerrit | Ivan Kolodyazhny proposed openstack/cinder: test https://review.openstack.org/259032 | 14:11 |
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| openstackgerrit | Ryan Rossiter proposed openstack/cinder: Add BackupStatus enum field https://review.openstack.org/256737 | 14:24 |
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| merooney | Could I get some core reviewer attention on https://review.openstack.org/#/c/254949/ ? | 14:29 |
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| openstackgerrit | Shay Halsband proposed openstack/cinder: XtremIO: fix generic glance cache with XtremIO https://review.openstack.org/249814 | 14:37 |
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| smcginnis | I had a tab open from a couple days ago and it made me feel nostalgic. :] | 14:57 |
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| e0ne | smcginnis: are you talking about gerrit? | 14:59 |
| smcginnis | e0ne: hehe, yep | 14:59 |
| e0ne | :) | 14:59 |
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| dulek | You can jump around the file using <j>,<k>, <{>,<}> and <Space>,<Shift>+<Space>. I'm getting more and more used to it. :) | 15:04 |
| e0ne | I've got some issues with scrolling :( | 15:05 |
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| openstackgerrit | Anthony Lee proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 15:32 |
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| openstackgerrit | Mikhail Khodos proposed openstack/cinder: Re-add Nexenta driver https://review.openstack.org/188877 | 15:34 |
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| openstackgerrit | Anthony Lee proposed openstack/cinder: LeftHand: Implement un/manage snapshot support https://review.openstack.org/255015 | 15:45 |
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| openstackgerrit | Mike Rooney proposed openstack/cinder: Add serial number to eseries ASUP payload https://review.openstack.org/254949 | 15:45 |
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| openstackgerrit | Alex O'Rourke proposed openstack/cinder: 3PAR: Implement v2 replication (unmanaged) https://review.openstack.org/231245 | 16:08 |
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| openstackgerrit | Kurt Martin proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 16:11 |
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| openstackgerrit | Ivan Kolodyazhny proposed openstack/cinder: Remove downgrade migrations https://review.openstack.org/258959 | 16:14 |
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| openstackgerrit | Anthony Lee proposed openstack/os-brick: Adding a tool for querying volume paths https://review.openstack.org/204191 | 16:19 |
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| -openstackstatus- NOTICE: Zuul is moving in very slow motion since roughly 13:30 UTC; the Infra team is investigating. | 16:41 | |
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| openstackgerrit | Michal Dulko proposed openstack/cinder: Add ConsistencyGroupVolumeTypeMapping table https://review.openstack.org/245854 | 17:14 |
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| dulek | xyang1: Hi, hopefully you won't mind I've hijacked your WIP patchset to prove the concept of live DB schema upgrades. :) | 17:17 |
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| xyang1 | dulek: I hope you asked me about it. I don't like to be hijacked TBH | 17:19 |
| anteaya | xyang1: can you join -infra for a moment? | 17:19 |
| xyang1 | anteaya: sure | 17:19 |
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| anteaya | thanks | 17:19 |
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| openstackgerrit | Nate Potter proposed openstack/cinder: Remove unnecessary VolumeNotFound exceptions https://review.openstack.org/256722 | 17:27 |
| openstackgerrit | Ryan Rossiter proposed openstack/cinder: Add test for checking object compatibilities https://review.openstack.org/259123 | 17:30 |
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| openstackgerrit | Mike Rooney proposed openstack/cinder: Add serial number to eseries ASUP payload https://review.openstack.org/254949 | 17:46 |
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| openstackgerrit | Dirk Mueller proposed openstack/cinder: Require a keystone v3 endpoint for project quota lookup https://review.openstack.org/259134 | 18:00 |
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| openstackgerrit | Patrick East proposed openstack/cinder: Add config option to enable reporting discard https://review.openstack.org/258747 | 18:20 |
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| openstackgerrit | Walter A. Boring IV (hemna) proposed openstack/os-brick: WIP: brick add extend_volume API https://review.openstack.org/243776 | 18:36 |
| openstackgerrit | Kurt Martin proposed openstack/cinder: Disable capabilities based on 3PAR licenses https://review.openstack.org/258728 | 18:38 |
| openstackgerrit | Walter A. Boring IV (hemna) proposed openstack/cinder: Don't call remove_export with attachments left https://review.openstack.org/255595 | 18:38 |
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| openstackgerrit | Kurt Martin proposed openstack/cinder: Disable capabilities based on 3PAR licenses https://review.openstack.org/258728 | 18:41 |
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| openstackgerrit | Abhilash Divakaran proposed openstack/cinder: Add volume driver for Tegile IntelliFlash array https://review.openstack.org/246787 | 19:04 |
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| openstackgerrit | Alex O'Rourke proposed openstack/cinder: 3PAR: Implement v2 replication (unmanaged) https://review.openstack.org/231245 | 19:14 |
| openstackgerrit | Anthony Lee proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 19:15 |
| openstackgerrit | Alex O'Rourke proposed openstack/cinder: 3PAR: Implement v2 replication (unmanaged) https://review.openstack.org/231245 | 19:16 |
| openstackgerrit | Abhilash Divakaran proposed openstack/cinder: Add volume driver for Tegile IntelliFlash array https://review.openstack.org/246787 | 19:20 |
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| openstackgerrit | Anthony Lee proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 19:24 |
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| smcginnis | jgriffith, jungleboyj, thingee, eharney, DuncanT: Prep for a stable release when you have a moment... | 19:29 |
| smcginnis | jgriffith, jungleboyj, thingee, eharney, DuncanT: sean.mcginnis@gmail.com | 19:29 |
| smcginnis | Doh! | 19:29 |
| smcginnis | Stoopid copy. | 19:29 |
| smcginnis | jgriffith, jungleboyj, thingee, eharney, DuncanT: https://review.openstack.org/259159 | 19:30 |
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| openstackgerrit | Jay Bryant proposed openstack/cinder: Remove the deprecated ibmnas driver https://review.openstack.org/259162 | 19:33 |
| jungleboyj | smcginnis: I am here now. | 19:33 |
| smcginnis | jungleboyj: And removing drivers! Nice! :) | 19:34 |
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| smcginnis | Gotta run. Wife's birthday and she wants to go to an exhibit. bbl | 19:35 |
| jungleboyj | smcginnis: Ok. Yeah, that one can be removed. | 19:35 |
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| ildikov | hemnafk: hi. could you please ping me when you're back? tnx :) | 19:52 |
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| dulek | xyang1: Ah, I'm sorry. I just wanted to try to get this rolling somehow, it's been a month without any update. You want me to step down from this patch or move it to another review? | 19:55 |
| xyang1 | dulek: that's ok. just leave it there and I'll take a look later | 19:56 |
| dulek | xyang1: Thanks. | 19:57 |
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| hemna | ildikov, hey | 20:02 |
| ildikov | hemna: hey. I got some review comments from John, so I have a few questions now :) | 20:03 |
| hemna | ok | 20:03 |
| ildikov | hemna: the first is the first comment here: https://review.openstack.org/#/c/193135/36/nova/virt/block_device.py | 20:04 |
| hemna | ok checking | 20:04 |
| ildikov | I saw that the initialize_connection is kind of a direct call to the cinderclient | 20:04 |
| ildikov | I started to check the client code, but then I ended up the thought that it's prolly easier if I ask you :) | 20:04 |
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| hemna | ok | 20:05 |
| hemna | so, why are we setting multiattach=True there? | 20:05 |
| hemna | The default is False | 20:05 |
| mtreinish | hemna: so I just pushed a new os-testr release which includes all the color patches. Want to give it another try? | 20:07 |
| hemna | mtreinish, sure in a bit | 20:08 |
| hemna | :) | 20:08 |
| mtreinish | It works for me when I run ostestr --color manually, but from tox the color doesn't work | 20:08 |
| ildikov | hemna: it's used here: https://review.openstack.org/#/c/193135/36/nova/virt/libvirt/volume/volume.py | 20:08 |
| hemna | hrmm | 20:08 |
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| hemna | so I presume that cons.shareable is used elsewhere? | 20:09 |
| hemna | conf | 20:09 |
| hemna | con.shareable | 20:10 |
| hemna | bah | 20:10 |
| hemna | mac chat client! | 20:10 |
| hemna | conf.shareable | 20:10 |
| ildikov | yeah, it's used for generating the xml for libvirt | 20:12 |
| hemna | do we not have access to the volume object when that happens ? | 20:12 |
| hemna | the volume object has the flag itself. | 20:12 |
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| hemna | the connection_info comes back from cinder's initialize_connection and it doesn't contain that flag. No cinder driver will populate that value | 20:13 |
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| ildikov | that file does not look like one that would have access to the volume info | 20:14 |
| ildikov | I assumed that we cannot get the flag from the connection_info from Cinder, but wanted to double check with you | 20:15 |
| ildikov | I will reply to that comment and ask John for options | 20:15 |
| hemna | yah, cinder itself doesn't add that flag in the return of initialize_connection | 20:15 |
| ildikov | ok, no worries we will figure something out | 20:16 |
| hemna | ok | 20:16 |
| hemna | the fun of nova code | 20:17 |
| ildikov | the other question belongs to the bugfix patch | 20:17 |
| hemna | ok | 20:17 |
| ildikov | it's REALLY not fun... | 20:17 |
| ildikov | so the question is here: https://review.openstack.org/#/c/256273/15/nova/volume/cinder.py | 20:17 |
| ildikov | I had it in mind too, but for me it was a low prio one compared to the rest of the code... :) | 20:17 |
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| ildikov | the not fun comment I meant on the Nova code obviously | 20:18 |
| hemna | ok | 20:18 |
| hemna | I think the host has been part of that api call for a long time... | 20:18 |
| hemna | let me check | 20:18 |
| ildikov | you mean on Cinder side it exists already we just did not use it? | 20:19 |
| hemna | correct | 20:20 |
| hemna | it's been around since Havana | 20:20 |
| ildikov | oh, awesome | 20:21 |
| ildikov | ... thanks much for checking | 20:21 |
| hemna | ugh | 20:22 |
| hemna | live migration | 20:22 |
| hemna | ...pain | 20:22 |
| ntpttr | If anyone has a moment I'm having some difficulty with an error output by gate-tempest-dsvm-full-ceph on this patch https://review.openstack.org/#/c/230617/ - so I've added the is_public as well as protected options to the upload-to-image method which are both True|False, but tempest is throwing an error on just is_public saying "Unable to set 'is_public' to 'False'. Reason: False is not of type u'string'\n\nFailed validating u'type' | 20:22 |
| ntpttr | Sorry for the wall of text there >.< | 20:23 |
| ildikov | hemna: do you mean it from the host param PoV or this is what reminded you? | 20:23 |
| hemna | yah | 20:23 |
| hemna | I'm checking the nova live migration code | 20:24 |
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| ildikov | I couldn't get there yet to check specifics like that | 20:25 |
| hemna | so during live migration nova attaches a volume to the new vm after it's up | 20:26 |
| hemna | then tears down the connection on the original compute host | 20:26 |
| hemna | cinder will need that hostname updated | 20:26 |
| hemna | :( | 20:26 |
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| ildikov | ok, this is what I thought you will point out | 20:26 |
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| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - Replacing deprecated API EMCGetTargetEndpoints https://review.openstack.org/244328 | 20:27 |
| ildikov | but the instance gets back the same volume it had before the migration or another one? | 20:28 |
| openstackgerrit | Helen Walsh proposed openstack/cinder: Error handling for invalid SLO/Workload combo https://review.openstack.org/243837 | 20:28 |
| hemna | it's the same volume | 20:29 |
| hemna | or should be | 20:29 |
| hemna | head is spinning over the nova code | 20:30 |
| ildikov | but I guess it's not attached in the same way as originally | 20:30 |
| hemna | I think nova circumvents some of the cinder APIs to do the live migration | 20:30 |
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| hemna | as it actually does a backdoor to attach the volume to the new n-cpu host before it disconnects it from the original n-cpu host. | 20:31 |
| hemna | kinda like a quick multi attach | 20:31 |
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| ildikov | sounds like pain | 20:32 |
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| hemna | yah I'm not sure I get this | 20:34 |
| hemna | I don't understand how nova even sees the volume on the destination host | 20:34 |
| hemna | during live migration | 20:34 |
| hemna | it doesn't look like nova ever calls initialize_connection | 20:34 |
| * hemna is confused | 20:34 | |
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| hemna | https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6294-L6306 | 20:36 |
| hemna | where does that connection_info come from ? | 20:36 |
| hemna | only way that works is if Cinder is called with initialize_connection for the new destination n-cpu host. | 20:37 |
| ildikov | one sec, I'm running tests so my laptop is getting slow... :) | 20:37 |
| hemna | ok | 20:37 |
| ildikov | I assume the connection_info contains what Nova needs, doesn't it? | 20:38 |
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| hemna | well | 20:40 |
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| hemna | so a few things | 20:40 |
| hemna | in order for a volume to ever be seen on a host, cinder has to get called | 20:40 |
| hemna | with the initiator information that is (collected by os-brick) on that new c-pu host. | 20:41 |
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| hemna | if that doesn't happen, then that host will never see the volume | 20:41 |
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| hemna | and I can't see where nova is calling cinder's initialize_connection to fetch the target information (connection_info) for that volume for that host. | 20:42 |
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| ildikov | there's a series of connect_volume calls starting here: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L1061 | 20:42 |
| hemna | yup | 20:42 |
| hemna | so by then, it's too late | 20:42 |
| hemna | that call is calling os-brick to discover the volume paths on the host. | 20:42 |
| ildikov | is the connection_info specific for the host or that contains the target info? | 20:42 |
| hemna | the connection_info is the volume's target information which will be specific to that host. | 20:43 |
| ildikov | as it gets the connection info from the BDM | 20:43 |
| hemna | take for example iSCSI | 20:43 |
| hemna | the iSCSI iqn will be different on the new n-cpu host | 20:43 |
| hemna | and cinder backends will need that iqn in order to export the target to that host. | 20:43 |
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| hemna | all of which has to happen prior to calling libvirt.driver._connect_volume() | 20:44 |
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| hemna | shite | 20:45 |
| hemna | I don't see how this works at all | 20:45 |
| hemna | :P | 20:45 |
| hemna | bah | 20:45 |
| hemna | so for the live migration case | 20:45 |
| hemna | we have to figure out | 20:45 |
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| hemna | 1) how nova is getting the correct cinder connection_info on the new host | 20:45 |
| hemna | 2) and how to tell cinder to update it's host for the attachment | 20:46 |
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| ildikov | unfortunately it was a while ago when I last played with iSCSI, so I don't remember the exact steps how it works | 20:46 |
| hemna | or I think live migration for lvm won't work | 20:46 |
| hemna | I have to be missing something | 20:47 |
| ildikov | you mean it does not work atm because of the connection_info? | 20:47 |
| hemna | dunno | 20:47 |
| hemna | yah even w/o multi attach | 20:47 |
| hemna | I'm confused how the volume shows up on the new n-cpu host | 20:47 |
| wN | i only saw the last few messages, but multiple computes can attach to the iscsi target | 20:47 |
| hemna | wN only if the cinder backend has exported the target to both hosts | 20:47 |
| hemna | and I don't see where nova is calling cinder to ask it to export to the destination n-cpu node. | 20:48 |
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| wN | does it set an acl on the target? | 20:48 |
| hemna | as far as I can tell | 20:49 |
| hemna | https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6294-L6306 | 20:49 |
| hemna | that's all nova is doing during pre_live_migration | 20:49 |
| hemna | and self._connect_volume is just to discover the volume showing up on the host. | 20:49 |
| hemna | the connection_info is being pulled out of the bdm | 20:49 |
| hemna | which I think is the connection_info from the original attach to the source host | 20:50 |
| wN | you're right. my env has a 1-way auth acl | 20:50 |
| hemna | which can/will be incorrect for the destination n-cpu host. | 20:50 |
| hemna | *sigh* | 20:50 |
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| ildikov | yeah, when it calls the pre_live... it adds the block_device_info from the original instance/attach | 20:51 |
| hemna | yup, which will be incorrect | 20:51 |
| hemna | :( | 20:51 |
| ildikov | is it tested anywhere? | 20:52 |
| hemna | it's supposed to be tested | 20:52 |
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| hemna | I think there was a live migration test put into the check/gate at some point | 20:52 |
| hemna | I haven't kept track of it though | 20:52 |
| hemna | so that's one problem that has almost nothing to do with multi attach | 20:53 |
| hemna | but | 20:53 |
| hemna | ignoring that problem for the moment | 20:53 |
| hemna | we need a way of telling cinder that the attachment host has changed | 20:53 |
| ildikov | hmm, I will not promise I will get there this year to check whether there is a test or not | 20:53 |
| hemna | and I don't think we have an API for that :(!! | 20:53 |
| ildikov | I assume Cinder attach is not called again when the volume is attached for the second time | 20:54 |
| hemna | it's currently not from nova's side afaik | 20:54 |
| hemna | that's what led me to find the https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6294-L6306 code | 20:54 |
| ildikov | and now only the initialize_connenction is missing, right? | 20:54 |
| hemna | it just calls os-brick to discover the volumes and then it's done. | 20:54 |
| hemna | yah | 20:55 |
| hemna | well a few things really | 20:55 |
| hemna | first nova needs the initiator connector information from the destination n-cpu host | 20:55 |
| hemna | and then call cinder's initialize_connection | 20:55 |
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| ildikov | and all this before the code you linked | 20:56 |
| hemna | yup | 20:57 |
| hemna | basically exactly like this | 20:57 |
| hemna | https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6445-L6453 | 20:57 |
| hemna | we added that to fix part of the live migration issues a release or so ago | 20:57 |
| hemna | that's at disconnect time. | 20:57 |
| hemna | after the vm is back up on the destination host, the source side gets cleaned up | 20:58 |
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| hemna | crud | 20:59 |
| hemna | so.......yah. I'm stuck :( | 20:59 |
| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - VMAX driver failing to remove zones https://review.openstack.org/244933 | 20:59 |
| hemna | we need to ping mriedem about this maybe | 20:59 |
| hemna | or someone that knows the live migration code in nova better than I. | 20:59 |
| hemna | https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6303 | 20:59 |
| hemna | I don't understand how that is the correct info. | 21:00 |
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| ildikov | in case of the post call, I guess it's the block_device_info that specifies the source | 21:03 |
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| hemna | we'll have to touch base with the nova guys | 21:05 |
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| hemna | I'll have to see if I can figure something out with the host name update in cinder's attachment :( | 21:06 |
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| ildikov | can we say that live migration and multiattach are not supported together as a first step? | 21:07 |
| hemna | possibly | 21:07 |
| hemna | not ideal | 21:07 |
| ildikov | surely not, but the non-priority code freeze is Jan 17... | 21:08 |
| ildikov | and it's Christmas in a week | 21:08 |
| * hemna wonders if we can just call attach again | 21:08 | |
| ildikov | I wondered that too TBH | 21:08 |
| hemna | I'm going through the cinder code to see if there is anything that would fail | 21:08 |
| ildikov | I have a comment from John that we don't want to call attach again for live migration, it would prolly worth to ask why | 21:09 |
| hemna | so | 21:09 |
| hemna | if the volume is already 'in-use' | 21:10 |
| hemna | and the volume is not multi attach | 21:10 |
| hemna | it will fail | 21:10 |
| hemna | it will reply with InvalidVolume | 21:10 |
| hemna | Volume is already attached | 21:10 |
| hemna | we'd have to change the logic in the cinder manager | 21:11 |
| jgriffith | I saw my name | 21:11 |
| ildikov | I guess it's not an option to detach first | 21:11 |
| hemna | to see if there is an existing attachment | 21:11 |
| hemna | and then just update it | 21:11 |
| hemna | else InvalidVolume | 21:11 |
| hemna | but nova would have to call attach, and it doesn't now. | 21:11 |
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| ildikov | this change sounds like one that would need an upgrade path | 21:12 |
| hemna | well nova wouldn't be able to do this against Liberty or < | 21:12 |
| hemna | :( | 21:12 |
| hemna | it would fail for sure | 21:12 |
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| hemna | so I don't know what to do | 21:14 |
| hemna | I'm stuck basically | 21:14 |
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| ildikov | is it only for lvm? | 21:16 |
| hemna | well I think we'll have similar issues with other cinder drivers that do the same as lvm | 21:16 |
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| jgriffith | lvm still works fine in Liberty last time I checked | 21:17 |
| hemna | yah it does | 21:17 |
| hemna | jgriffith, this is multiattach | 21:17 |
| hemna | I'm down a rathole | 21:17 |
| jgriffith | hemna: oh... that | 21:17 |
| jgriffith | hemna: say hello to the Rabbit | 21:17 |
| ildikov | I guess the choices here to no multiattach or not together with live migration, right? | 21:17 |
| hemna | it's multiple issues now it seems | 21:17 |
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| hemna | https://review.openstack.org/#/c/255595 | 21:18 |
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| hemna | that guy is my attempt at fixing lvm multiattach | 21:18 |
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| hemna | as well as other cinder drivers that do something similar, which I believe is almost every driver | 21:18 |
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| hemna | multiple vms on a single host have an attach to the volume. | 21:19 |
| jgriffith | hemna: wait... are you trying to share a target? | 21:19 |
| hemna | say you have 4 attaches of the same volume to vms on the same n-cpu host. | 21:19 |
| openstackgerrit | Kurt Martin proposed openstack/cinder: Disable capabilities based on 3PAR licenses https://review.openstack.org/258728 | 21:20 |
| hemna | w/o that patch, the first detach removes the target to that host. the other 3 vms on that host, just lost the volume. | 21:20 |
| hemna | as there is only 1 target exported to the host. | 21:20 |
| jgriffith | hemna: remember way back I mentioned the idea of a list of connections that you could append/pop | 21:20 |
| hemna | well, we have that list of connections | 21:21 |
| jgriffith | hemna: I think that would solve that problem for you | 21:21 |
| hemna | it's the volume_attachment table | 21:21 |
| hemna | that tracks every attachment | 21:21 |
| hemna | the problem is nova isn't sending the host along with it. | 21:21 |
| jgriffith | hemna: because you could easily check and see if there's an existing attachment still in the list before target delete | 21:21 |
| jgriffith | hemna: ? | 21:22 |
| hemna | I gave ildikov a patch for nova that updates the nova code to send the host along with the attach call, which saves it into the db. | 21:22 |
| hemna | that's exactly why my patch does | 21:22 |
| hemna | https://review.openstack.org/#/c/255595 | 21:22 |
| hemna | that one | 21:22 |
| hemna | it checks to see how many attaches are against a single host. | 21:22 |
| ildikov | https://review.openstack.org/#/c/256273 | 21:22 |
| hemna | if you are detaching, it doesn't call remove_export if there are attachments left. | 21:22 |
| hemna | leaving the target exported and all is ok. | 21:23 |
| hemna | so, in the scenario where you are just doing normal attaches and detaches, with multi attach, it works | 21:23 |
| hemna | the problem is live migration | 21:23 |
| hemna | nova doesn't call initialize_connection, nor does it call attach for the new compute host | 21:24 |
| hemna | so the host entry in the attachment for cinder will be the original compute host after live migration is complete | 21:24 |
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| hemna | (my rathole) | 21:25 |
| hemna | I hope that makes sense | 21:25 |
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| hemna | https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L6294-L6306 | 21:26 |
| hemna | that's nova doing a discover volume on the destination host | 21:26 |
| hemna | never calls cinder | 21:26 |
| hemna | I don't know how that works | 21:27 |
| hemna | but it seems to | 21:27 |
| hemna | and it doesn't call cinder attach to update | 21:27 |
| hemna | I kinda think it should | 21:27 |
| hemna | but cinder's attach bails as soon as it detects the volume is 'in-use' (for non multi attach capable volume) | 21:27 |
| hemna | we need cinder to simply update the attachment record that already exists with the new information (currently only host needs an update) | 21:28 |
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| ildikov | I'm thinking, but have no good solution in mind :( | 21:30 |
| hemna | ildikov, yah | 21:30 |
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| hemna | I think even updating cinder manager attach_volume to update the record, won't work for Nova | 21:30 |
| hemna | because of Liberty and <, not having that ability. | 21:31 |
| ildikov | I remember some migration related discussions earlier, bu tcannot recall the details and he outcome | 21:31 |
| hemna | so....... | 21:31 |
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| hemna | maybe drinking is the only solution | 21:31 |
| ildikov | yeah, no backward compatible way it seems | 21:31 |
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| ildikov | isn't there a way to identify which Cinder version Nova is talking to and do things accordingly? | 21:33 |
| hemna | it wouldn't be hard to update the cinder volume manager to cope w/ an 'update' attach_volume call | 21:33 |
| hemna | that's easy | 21:33 |
| hemna | ildikov, well the issue is that the Cinder API has the hostname as part of the attach call | 21:34 |
| hemna | and has had it for ages | 21:34 |
| hemna | nova just has never sent it. | 21:34 |
| hemna | hrmm | 21:34 |
| ildikov | but the issue here is to call an update which does not exist in Cinder atm | 21:34 |
| hemna | hmm | 21:35 |
| ildikov | but well, multiattach will not work properly with Liberty Cinder anyway | 21:35 |
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| ildikov | I mean without your Cinder side fix the detach will not work | 21:35 |
| hemna | I think we have the host name in the connector | 21:35 |
| hemna | that gets passed into initialize_connection | 21:35 |
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| hemna | the problem is, we don't have instance_uuid | 21:36 |
| hemna | nor attachment_id | 21:36 |
| ildikov | yeah, I just wanted to ask, whether you have it | 21:36 |
| ildikov | the initialize_connection is just to connect the host, right? | 21:37 |
| hemna | it's to export a target to a host, and return the target connection_info | 21:37 |
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| ildikov | yeap, I meant something like this | 21:38 |
| hemna | so Cinder has had multi attach support for a while | 21:39 |
| hemna | but it's never been called | 21:39 |
| hemna | because nova has never supported it | 21:39 |
| * hemna wonders if we can tweak other stuff on cinder side to require the host | 21:40 | |
| * ildikov is pessimistic on this one :( | 21:41 | |
| openstackgerrit | Nate Potter proposed openstack/cinder: Remove unnecessary VolumeNotFound exceptions https://review.openstack.org/256722 | 21:42 |
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| ildikov | basicly we never told Cinder that the instance is moved and now we would like to in a way to not break it | 21:42 |
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| ildikov | we can do it incrementally, I mean add the Cinder part now and Nova part in the next cycle and until that point no live migration wih multi attached volumes | 21:44 |
| ildikov | how is it detached today? identifying the volume by id and then remove the target just simply? | 21:45 |
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| Swanson | Looking at stats["replication_type"] = ['async', 'sync'...] in the replication doc. This doesn't actually work, right? | 21:52 |
| jgriffith | patrickeast: ping | 21:56 |
| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - Changing PercentSynced to CopyState in isSynched https://review.openstack.org/246992 | 21:56 |
| Swanson | jgriffith: ^^^ (I think we talked about this before.) | 21:56 |
| patrickeast | jgriffith: hey | 21:56 |
| jgriffith | patrickeast: hey dude! | 21:56 |
| jgriffith | patrickeast: WRT to the stuff hemna is working on... | 21:56 |
| jgriffith | patrickeast: Pure is actually an interesting case on the live-migration I was thinking | 21:57 |
| jgriffith | patrickeast: because you need the connection info to build the target if IRC | 21:57 |
| jgriffith | patrickeast: ie for the credentials | 21:57 |
| patrickeast | jgriffith: yep | 21:57 |
| jgriffith | adding initiator iqn | 21:57 |
| * patrickeast catching up on the backscroll | 21:57 | |
| jgriffith | patrickeast: so IIRC you don't have a problem with live-migration | 21:57 |
| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - Extend Volume for VMAX3 https://review.openstack.org/248941 | 21:58 |
| jgriffith | patrickeast: which would indicate that "somewhere" there's a call being made back in to Cinder | 21:58 |
| * jgriffith is far too lazy to deploy that setup and test it again :) | 21:58 | |
| jgriffith | patrickeast: and following Nova code is... well... | 21:58 |
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| patrickeast | jgriffith: haha yea, its not exactly straight forward to trace through | 21:59 |
| openstackgerrit | Merged openstack/cinder: Change the format of some inconsistent docstring https://review.openstack.org/258393 | 22:00 |
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| openstackgerrit | Merged openstack/cinder: Pass volume_id in request_spec for manage_existing https://review.openstack.org/258460 | 22:05 |
| openstackgerrit | Merged openstack/python-cinderclient: Drop py33 support https://review.openstack.org/257699 | 22:06 |
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| kfox1111 | the ha guide currently says to put cinder api active/passive. I thought that was only for cinder-volume. which is it? | 22:07 |
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| smcginnis | Hey, just info in case something goes south - my patch went through to stop capping devstack on Cinder v1. | 22:23 |
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| smcginnis | So if anyone sees anything odd, let me know ASAP. | 22:23 |
| smcginnis | kfox1111: API should be fine A/A as far as I remember, but maybe someone who actually has tried it can confirm. | 22:23 |
| kfox1111 | k. thx. | 22:24 |
| smcginnis | Correct to above: s/went through/was approved and will be merged soon/ | 22:25 |
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| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - Incorrect storage group selected on an VMAX3 attach https://review.openstack.org/250443 | 22:28 |
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| e0ne | smcginnis: if I understood it correctly - nothin wiill change, we still have anabled v1 api in cinder by default | 22:41 |
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| ildikov | hemna: thanks for the comments on the patches | 22:43 |
| hemna | ildikov, sure | 22:43 |
| hemna | sorry I couldn't figure something out yet | 22:43 |
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| hemna | I'm at a loss | 22:43 |
| hemna | I can't figure out how live migration works at all really | 22:43 |
| ildikov | hemna: I need to get some sleep now, but will try to think about the live migration while fixing the millions of other nits | 22:43 |
| hemna | ok | 22:44 |
| hemna | I'm surprised you are up this late! | 22:44 |
| ildikov | long running tests | 22:44 |
| ildikov | it's so annoying to wake up to a pep8 error or smth dumb in the unit tests on the gate so I run what I can locally :) | 22:45 |
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| hemna | hehe | 22:45 |
| hemna | ildikov, I hate when that happens..... | 22:46 |
| ildikov | BTW, when will you go on PTO? | 22:46 |
| hemna | oh yah...crap I should have ran tox -epep8 | 22:46 |
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| hemna | I'm working Mon and Tuesday next week | 22:46 |
| hemna | then I'm off until the 4th | 22:46 |
| ildikov | ok, great, I will try to collect all my dumb questions by next Tue then | 22:46 |
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| hemna | ok :) | 22:47 |
| ildikov | thanks again, have a nice day :) | 22:47 |
| ildikov | laters | 22:47 |
| hemna | no problemo! | 22:47 |
| kmartin | smcginnis, I have a new driver BP https://blueprints.launchpad.net/cinder/+spec/3par-license-check when you have time. | 22:52 |
| openstackgerrit | Helen Walsh proposed openstack/cinder: EMC VMAX - _remove_last_vol_and_delete_sg not being called for V3 https://review.openstack.org/252066 | 22:52 |
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| openstackgerrit | Anthony Lee proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 23:24 |
| openstackgerrit | Anthony Lee proposed openstack/cinder: 3PAR: Implement un/manage snapshot support https://review.openstack.org/253760 | 23:26 |
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| openstackgerrit | Patrick East proposed openstack/cinder: Fix delete_snapshot error case in Pure driver https://review.openstack.org/217940 | 23:35 |
| openstackgerrit | Kurt Martin proposed openstack/cinder: Disable capabilities based on 3PAR licenses https://review.openstack.org/258728 | 23:36 |
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