Friday, 2018-01-12

jgriffithI don't care about the volume type itself so much, it's not really any different than any other volume00:00
jgriffithwhat I DO care about is the attach behavior00:00
jgriffithmultiattach: True == "can't attach as root disk at all" seems like an odd paradigm00:01
jgriffithalthough I get that multiattach: True not allowing multiple attachments might seem contradictory too; but not as much :)00:02
ildikovif it would be creating a volume where the user gets an error message that multiattach and bootable true don't work together then it would make sense as it's an obvious behavior00:03
ildikovI mean the user knows they have to choose00:03
jgriffithildikov: my point is *why* do they have to choose?00:04
jgriffithildikov: what are you protecting them from?00:04
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jgriffithYou're eliminating use cases and creating extra-steps for them to deal with for no real reason IMO00:04
jungleboyjjgriffith:  If we can prevent there from being more than one R/W instance when it is bootable, nothing.00:04
jgriffithjungleboyj: that's my opinion; but perhaps I'm missing something00:05
ildikovjungleboyj: but we can't today00:05
jgriffithThe other thing quite frankly is I don't care if this is *perfect* in the first iteration; in fact I don't want to strive for it to be perfect00:05
jgriffithI just want "good enough for now"00:05
jgriffithso we can adapt things more easily going forward00:06
ildikovjgriffith: I'm not the best to ask as if it was just me then we wouldn't deal with this as I believe that you just cannot prevent the user from shooting themselves in the foot if that's really what they want00:06
ildikovjgriffith: so as a summary, you're right, my bad00:08
* ildikov is looking at jgriffith with puppy eyes for forgiveness :)00:08
jgriffithno need for puppy eyes00:08
jgriffithI might be completely wrong on this; but I'm fine with being wrong00:08
jgriffithit's not the end of the world00:09
ildikovjgriffith: you don't forgive or I can save it for later this time? :)00:09
jgriffithand being wrong and going the direction I proposed vs being wrong and going the other direction the penalty is not as significant00:09
jgriffithThere's nothing to forgive00:09
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ildikovI just try not to bother people when it's not necessary especially with multiattach as we're all on the edge by now00:10
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ildikovbut failing more and more often these days :/00:11
jgriffithdon't be silly00:11
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ildikovI need to sleep before that happens again :)00:12
jungleboyjI am in agreement that good enough is ok right now.  We can always make changes/improvements in the future.00:15
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ildikovjungleboyj: good enough should always be ok otherwise things take 5 years to land...00:17
jungleboyjildikov:  Yep.00:17
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openstackgerritjunbo.li proposed openstack/cinder master: Fix version details API does not return 200 OK  https://review.openstack.org/53239400:53
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openstackgerritYu Zhang proposed openstack/cinder master: [Doc] Add replication group support in doc for Storwize  https://review.openstack.org/53274902:26
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openstackgerritRyan Liang proposed openstack/cinder master: [VNX] Restore snapshot to volume  https://review.openstack.org/52949702:49
openstackgerritOpenStack Proposal Bot proposed openstack/cinder master: Updated from global requirements  https://review.openstack.org/53304002:56
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openstackgerritMerged openstack/cinder-specs master: Update the multiattach spec  https://review.openstack.org/53294403:09
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openstackgerritOpenStack Proposal Bot proposed openstack/python-brick-cinderclient-ext master: Updated from global requirements  https://review.openstack.org/53304903:20
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openstackgerritJeremy Zhang proposed openstack/cinder master: Fix api-ref for v3 volume group types  https://review.openstack.org/53305303:36
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openstackgerritPeng Wang proposed openstack/cinder master: DS8K: block in-use volume to be added to consistency group  https://review.openstack.org/53307204:56
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yjkHi, I have a openstack newton setup on which nova evacuate of a volume booted VM fails due to failure in iSCSI login.05:24
yjkcomplete details: http://paste.openstack.org/show/643500/05:24
yjkAny help would be really appreciated. Thanks !05:24
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openstackgerritMerged openstack/cinder master: Deprecate the allow-multiattach option to create  https://review.openstack.org/53157005:56
openstackgerritMerged openstack/cinder master: VMAX driver - Cannot extend volumes in a replication relationship  https://review.openstack.org/51181205:56
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openstackgerritJeremy Zhang proposed openstack/cinder master: Fix api-ref for v3 volume group types  https://review.openstack.org/53305306:46
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openstackgerrityixuan zhang proposed openstack/cinder master: Storwize: modify hyperswap host_site configuration  https://review.openstack.org/53311307:43
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openstackgerritGhanshyam Mann proposed openstack/cinder-tempest-plugin master: Cinder Tempest plugin tests: Switch to stable interface  https://review.openstack.org/53311807:50
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openstackgerrityixuan zhang proposed openstack/cinder master: Storwize: modify hyperswap host_site configuration  https://review.openstack.org/53311309:47
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openstackgerritMerged openstack/cinder master: 3PAR: fix create group from source functionality  https://review.openstack.org/53217809:53
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chhavi__geguileo: want to discuss on the backup native thread review, saw your comments10:22
geguileochhavi__: can you give me 5 minutes to finish something?10:22
chhavi__geguileo: sure10:22
geguileothanks10:22
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geguileochhavi__: I'm ready  :-)10:25
geguileochhavi__: I see that you have replied and think that the small files don't require the change10:26
geguileochhavi__: The reason why I think we need it is because we could have congestion on the connection to the storage, and then what should have been a fast operation becomes slow10:26
geguileoand when you have multiple backups that have been launched at the same time they could all have that speed issue simultaneously10:27
geguileowhich would bring us to the same place as before  :-(10:27
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geguileoI think there could be an easier solution... Let me have a quick look10:28
chhagarwgeguileo: sorry got disconnected10:28
geguileolol10:28
geguileoso I was talking to myself...10:28
geguileorofl10:28
chhagarwWhat I was telling that we don't need to put tpool for all read and write10:28
geguileodid you get any of my crazy talk?10:28
chhagarwno missed it :)10:29
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geguileochhavi__: I see that you have replied and think that the small files don't require the change10:29
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geguileochhavi__: The reason why I think we need it is because we could have congestion on the connection to the storage, and then what should have been a fast operation becomes slow10:29
geguileoand when you have multiple backups that have been launched at the same time they could all have that speed issue simultaneously10:29
geguileowhich would bring us to the same place as before  :-(10:29
geguileoI think there could be an easier solution... Let me have a quick look10:29
chhagarwby multiple backup u mean backup_chunk or different backup calls made at the same time10:31
chhagarwbecause chunks will be executed sequentially10:31
geguileodifferent backup calls made at the same time10:31
geguileoso if you get 10 backup request at the same time10:31
geguileoand for some reason the connection to the storage is dreadful10:31
geguileothen you get 10 read of small file operations that should have been fast that are now sloooooooooow10:32
geguileowhat would you say to adding 2 new methods to the chunked driver10:32
geguileo_get_object_writer and _get_object_reader10:32
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geguileoeach one calls to the implementation of the abstract method (get_object_writer and get_object_reader) and wraps the response with a tpool.Proxy10:33
geguileothat way we only have to change all calls to the abstract methods with our new internal methods10:33
geguileoand we automatically get all the reader and writer methods automatically executed in native threads10:34
geguileochhagarw: I don't know if I explained myself clearly...10:34
chhagarwapart from get_object_writer and reader, there are few more read and write calls which are heavy, so putting 2 new methods will not solve the complete problem10:36
geguileolet me see the other read/write operations you mention...10:37
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geguileochhagarw: yeah, we have 3 kinds of objectects we need to be careful with... Our reader/writer objs, the compress/decompress, and the volume_file ones10:39
geguileochhagarw: but for the volume_file ones, maybe the backup manager should pass them with a proxy10:39
geguileosince this will affect all backups...10:40
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chhagarwgeguileo: yes10:42
geguileochhagarw: so to sumarize this thing10:43
geguileochhagarw: do you agree that we could have a problem even with the small files?10:43
chhagarwHaving a new methods in chunkeddriver will be good, wrapping up reader, writer10:43
openstackgerritHelen Walsh proposed openstack/cinder master: VMAX doc - Queens feature documentation  https://review.openstack.org/53314710:43
geguileochhagarw: And for the file passed by the manager it should be the manager the one that wraps it10:44
chhagarwI don't really think so that this issue will be common with small files, at least we have never see in our testing10:44
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chhagarwSHA, metadata files have defined sizes which will not be very huge.10:44
geguileochhagarw: but I'm afraid to find it at a later time and then bang my head against the desk for not fixing it in the first place10:45
geguileochhagarw: how many simultaneous backups did you test with?10:45
chhagarwWe tried with 12 concurrent backups10:46
geguileochhagarw: were they triggered serially in a loop or in parallel?10:47
chhagarwAs a generic solution it will be a good idea to wrap these in a method which takes care of threading issue.10:47
chhagarwThey are parallel bakcups10:47
chhagarwnot serial10:47
geguileoBut did you wait for the CLI response of the first backup before launching the second10:48
geguileo?10:48
geguileoor did you have 12 threads and they all made the request more or less simultaneously?10:48
chhagarw12 threads calling the API simultaneously10:48
geguileothat's great!!10:48
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chhagarwbut that concurrent use cases we ran with small backups of 20-50GB size10:49
geguileoI believe that's good enough to verify this10:49
geguileoWould you be willing to do the wrapping of the objects?10:50
geguileoOr I can do it for you if you want10:50
geguileoI can write the tests as well10:50
geguileosince you have already spent a lot of time on this one10:50
chhagarwYou can make the changes10:50
geguileoOK, I'll make the changes and submit them10:51
geguileoAnd then you can verify that I haven't broken anything   ;-)10:51
chhagarwI can verify on our test environment10:51
geguileothat would be perfect!!!!10:51
geguileoOK, I'll try to get the patch up today10:52
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chhagarwAlso just take care of compress, decompress and file read write calls10:52
geguileochhagarw: Oh, I'm going to take your patch and interate over it, not start a new one  ;-)10:52
chhagarwThere is one more issue which I see in the backup code, Is we use "backup_file_size" same as the chunk size10:53
geguileochhagarw: so you'll see my patch go in the same review as yours and it will go with your name as the main developer, I'll just add my name to the commit messages to indicate that I contributed10:53
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chhagarwno issues10:54
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openstackgerritxiaoqin proposed openstack/cinder master: Storwize: use DLM locks To be able to use Storwize driver with c-vol in A/A deployment, local file lock should be replaces with distributed lock manager.  https://review.openstack.org/53315611:07
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gansoHello. All third party CIs are broken for driverfixes/ocata because of this: http://logs.openstack.netapp.com/logs/06/518306/1/upstream-check/cinder-cDOT-NFS/e899246/logs/devstacklog.txt.gz#_2018-01-09_21_45_31_66111:53
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gansois there anyone already looking into this policy issue?11:53
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openstackgerritHelen Walsh proposed openstack/cinder master: VMAX driver - retype fix where workload is None  https://review.openstack.org/53317012:24
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openstackgerritMerged openstack/cinder master: VMAX driver - Implement SRDF Metro feature  https://review.openstack.org/51728212:48
elmaciejHi!12:52
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elmaciejI need some clarification - hopefully someone can help here - I have a pik einstallation using juju and it creates cinder-volumes on the disk which is a lun from SAN. We cant use SAN using driver as it is shared with other projects and it's denied by security policy. Whenever I create an instance it creates a disk in /var/lib/libvirt instead of cinder-volumes group.12:54
elmaciejhow can I force nova to create a lvs instead of local file12:55
elmaciejor maybe should I point manually /var/lib/libirt to shared lun ?12:55
pooja_jadhavgeguileo:Hi12:55
geguileopooja_jadhav: Hi, I have a fix, just adding the unit tests12:56
pooja_jadhavgeguileo: This issue will get resolve once the patch[1] will get merge.12:57
pooja_jadhav[1]: https://review.openstack.org/#/c/531289/12:57
pooja_jadhavgeguileo: added comment on bug12:57
geguileopooja_jadhav: OK, I saw that bug report, but since it didn't match the issue here...12:57
geguileopooja_jadhav: the bug report is incomplete and/or the patch does not match it12:58
geguileopooja_jadhav: I'll update the original bug report to reflect this other case as well and then close mine as a duplicate12:59
pooja_jadhavgeguileo: ok13:00
pooja_jadhavgeguileo: thank you13:00
geguileopooja_jadhav: thanks for you quick response13:00
pooja_jadhavgeguileo: thanks for ur inputs13:01
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elmaciejHello ! Again question - I need some clarification - hopefully someone can help here - I have a pik einstallation using juju and it creates cinder-volumes on the disk which is a lun from SAN. We cant use SAN using driver as it is shared with other projects and it's denied by security policy. Whenever I create an instance it creates a disk in /var/lib/libvirt instead of cinder-volumes group.13:34
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smcginnisganso: All CI _should_ be broken on driverfixes branches, because they should not be running on there.14:40
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jungleboyjSo, I am seeing something weird with LVM.16:00
jungleboyjGoing to talk out loud here for a minute to see if anyone has ides.16:00
jungleboyjI have 3 LVM nodes but my scheduler is pointing everything at one of them.  For some reason two of them are reporting over subscribed even though they have nearly 300 GB free.16:01
jungleboyjLooking at the scheduler it appears to be being told the wrong amount of space available. on the two where I am having the issue.16:02
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smcginnisOfficial Rocky schedule is now posted: https://releases.openstack.org/rocky/schedule.html16:25
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jungleboyjCool.  Thanks smcginnis16:26
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openstackgerritHelen Walsh proposed openstack/cinder master: VMAX driver - QOS settings incorrectly applied on Default storage group  https://review.openstack.org/53291116:33
openstackgerritHelen Walsh proposed openstack/cinder master: VMAX driver - retype fix where workload is None  https://review.openstack.org/53317016:34
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-openstackstatus- NOTICE: Zuul has been restarted and lost queue information; changes in progress will need to be rechecked.16:44
SwansonI think what I like about the new zuul is its stability. Like a rock.16:45
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jungleboyjjgriffith:  You around?16:51
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smcginnisraunak: You can talk publicly.16:53
raunakSure16:53
raunak There seems to be confusion with a lot of people with pike release notes. It mentions “The Nimble driver has been marked as unsupported and is now deprecated. enable_unsupported_driver will need to be set to True in the driver’s section in cinder.conf to continue to use it.”  https://docs.openstack.org/releasenotes/cinder/pike.html. How could we update the release notes ?16:54
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smcginnisraunak: Looks like the unsupported patch wasn't reverted. A new patch was submitted changing the flag and it did not remove the release note: https://review.openstack.org/#/c/484443/16:56
raunakIs there a way to update that now to avoid confusion ?16:56
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smcginnisraunak: A patch will have to be proposed directly to stable/pike removing the note. That should get it out of there the next time there is a stable release.16:57
raunaksure. will do so. I see Phase II – Maintained release on 2018-02-26 for Pike. Would that be the next stable release ?17:01
smcginnisraunak: Stable releases are done semi-regularly, but on-demand when we have things we want/need to get out there.17:02
smcginnisraunak: Once this goes through, we can probably ask jungleboyj to request a new release.17:02
raunakGreat. Thanks17:03
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jungleboyjYeah, I can propose a release.  raunak  Are you going to propose the change to stable/pike to remove that?17:04
raunakYes17:04
jungleboyjraunak:  Ok.  I can help get that through.  Just point me at the patch.17:06
raunakSure. Will do so shortly. Thanks17:06
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raunakjungleboyj: https://review.openstack.org/#/c/53325317:37
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openstackgerritHagen Finley proposed openstack/cinder master: Edits to Cinder Block Storage Overview  https://review.openstack.org/53332423:32
jungleboyjOk, now your changes are up there.23:34
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