Wednesday, 2023-05-03

whoami-rajat#startmeeting cinder14:00
opendevmeetMeeting started Wed May  3 14:00:04 2023 UTC and is due to finish in 60 minutes.  The chair is whoami-rajat. Information about MeetBot at http://wiki.debian.org/MeetBot.14:00
opendevmeetUseful Commands: #action #agreed #help #info #idea #link #topic #startvote.14:00
opendevmeetThe meeting name has been set to 'cinder'14:00
whoami-rajat#topic roll call14:00
jungleboyjo/14:00
rosmaitao/14:00
simondodsleyo/14:00
nahimsouza[m]o/14:00
felipe_rodrigueso/14:00
thiagoalvoravelo/14:00
caiquemello[m]0/14:00
zaitcevo/14:00
MatheusAndrade[m]o/14:00
enriquetasoo/14:00
luizsantos[m]o/14:01
whoami-rajat#link https://etherpad.opendev.org/p/cinder-bobcat-meetings14:01
eharneyhi14:01
lucasmoliveira059\o14:01
whoami-rajathello14:03
keerthivasansuresho/14:03
whoami-rajatalways happy to see good number of people joining14:04
whoami-rajatlet's get started14:04
whoami-rajat#topic announcements14:04
whoami-rajatCinder 2023.2 Bobcat Midcycle-114:04
whoami-rajatthe first midcycle of 2023.2 cycle will be held on 02nd June14:05
whoami-rajaton wednesday between 1400-1600 UTC (our usual meeting time + 1 hour extra)14:05
helenadantas[m]hello14:05
whoami-rajatI've prepared an etherpad to gather the topics, we still have a month but good to add them early since we only have 2 hours14:06
whoami-rajat#link https://etherpad.opendev.org/p/cinder-bobcat-midcycles14:06
jungleboyjJune 2nd is a Friday ...14:06
whoami-rajatwow, it should be 31st may ...14:06
rosmaitaby 02 June, do you mean 31 May ?14:06
* whoami-rajat checking again14:07
jungleboyj:-)  Cool.14:07
whoami-rajatit's correct on the release schedule but somehow in my personal notes the date is wrong14:07
whoami-rajatthanks for correcting it jungleboyj and rosmaita 14:07
whoami-rajatit's actually 31st May14:08
whoami-rajat#link https://releases.openstack.org/bobcat/schedule.html#b-cinder-mid-cycle-ptg-114:08
whoami-rajatso reiterating, we will be having our first midcycle of bobcat on 31st May (wednesday) 1400-1600 UTC14:08
jungleboyj++14:08
whoami-rajatplease add your topics to the etherpad14:08
whoami-rajatnext, Cinderlib 2023.1 (cycle trailing) release14:09
whoami-rajat#link https://lists.openstack.org/pipermail/openstack-discuss/2023-May/033536.html14:09
whoami-rajatthere was an email from release team regarding the cycle trailing release14:10
whoami-rajatand we've the cinderlib project which is cycle trailing14:10
whoami-rajati checked the open patches in cinderlib master and nothing seemed urgent or in a merge-able state so i proposed the release early14:11
whoami-rajat#link https://review.opendev.org/c/openstack/releases/+/88213214:11
whoami-rajatif anyone has a urgent/required change in cinderlib that they want to include in 2023.1 release, they can propose it and let me know14:12
whoami-rajatbut if there are no concerns, we will go ahead with releasing cinderlib 2023.1 (Antelope)14:12
whoami-rajatnext, Stable releases14:13
whoami-rajatwe recently released all active stable branches i.e. 2023.1, Zed, Yoga and Xena (final)14:14
whoami-rajatwe also moved Xena to EM so there will be no more releases of xena14:14
whoami-rajatfor the list of projects that are released with the recent stable releases, please go through the etherpad on L#10114:15
whoami-rajatthanks to jbernard for carrying out all the releases!14:16
jbernard\o/14:16
zaitcevYeah.14:17
enriquetaso==14:17
enriquetaso++14:17
jungleboyj++14:17
whoami-rajatthat's all the announcements i had, anyone has anything else that the team should be aware about?14:19
rosmaitarocky and stein were tagged EOL about an hour ago14:19
rosmaita#link https://review.opendev.org/q/topic:cinder-eol14:19
whoami-rajatoh yes, forgot to provide an update on that14:20
whoami-rajatthanks rosmaita 14:20
whoami-rajatso rocky and stein branches are not active anymore for cinder so we can't backport/propose patches to those branches now14:21
whoami-rajati guess that's all for announcements, let's move to topics14:23
whoami-rajat#topic Cinder-Backup very slow / inefficient when using chunked drivers, e.g. S314:23
whoami-rajatcrohmann doesn't seem to be around ...14:23
* whoami-rajat going through the topic14:24
whoami-rajatok, so there are multiple things here14:27
*** dviroel_ is now known as dviroel14:28
whoami-rajat1. chunked backup driver is slow during backup of large volumes as it processes each chunk14:28
whoami-rajat#link https://bugs.launchpad.net/cinder/+bug/191811914:28
whoami-rajatthere was an attempt to perform parallel read/write of the chunks14:28
whoami-rajat#link https://review.opendev.org/c/openstack/cinder/+/77923314:29
whoami-rajatGorka has a comment on it saying we already have config options to do the same thing the patch is trying to do (though i haven't gone through the implementation)14:29
whoami-rajatbackup_native_threads_pool_size14:30
whoami-rajatbackup_max_operations14:30
eharneythe existing options probably parallelize across multiple backups instead of one backup?14:30
eharneyso not really the same thing14:30
whoami-rajatthat's a good question, I'm not sure but i think you're right14:31
whoami-rajatbackup_max_operations is for the number of worker processes14:31
whoami-rajatbackup_native_threads_pool_size is for native thread in a particular worker14:31
whoami-rajatbut i guess they take different backup operations and don't do parallel read/write of a single backup as eharney said14:32
zaitcevIn theory I was going to look into the performance of backup/restore, but I got sidetracked with Keystone.14:32
zaitcevAlso, people seem to assume that backup is infinitely parallel, but it's not true, because we compress a whole segment. Even if your network performance is infinite, and the back-end has millions of drives, you have to consume blocks as they are compressed.14:33
whoami-rajatlooks like backup discussions are more frequent than ever, but maybe it's from the same author14:34
whoami-rajatyeah, backup is a combination of steps so anything during the whole operation can become a bottleneck14:35
whoami-rajats/anything/any step14:35
whoami-rajatanyway, not an expert on backups14:36
whoami-rajatthe second point in this was regarding NFS backup driver14:37
whoami-rajat#link https://review.opendev.org/c/openstack/cinder/+/61107914:37
simondodsleymaybe fix the merge conflict first...14:37
eharneyi haven't worked on this one in a while14:37
eharneyit fixed an issue where the c-bak service would be blocked by i/o operations iirc14:38
whoami-rajatthere is a comment on it by Christian today, https://review.opendev.org/c/openstack/cinder/+/611079/5#message-3fc554786126198652ed152f52de89d5237d536814:39
whoami-rajatanyway, that's all i could discuss about this from the agenda14:41
whoami-rajatanything else on this topic?14:41
whoami-rajatok, let's move to open discussion14:43
whoami-rajat#topic open discussion14:43
simondodsleyJust another call to get some reviews done by cores14:43
whoami-rajatwe've 3 reviews in review request14:43
raghavendratRequesting some feedback on below patch (HPE 3PAR). Thanks.14:43
rosmaita4, i'm about to add another one14:43
raghavendrathttps://review.opendev.org/c/openstack/cinder/+/87983614:44
enriquetasoRequesting some feedback on the ceph backup restore fix: https://review.opendev.org/c/openstack/cinder/+/880965 . Thanks!14:45
simondodsleyThe Pure patch has been hanging around for 4 weeks. I'd really like to get this merged14:45
eharneytest-requirements bump here: https://review.opendev.org/c/openstack/cinder/+/879961   - have been trying to bump our mypy version up since March14:46
keerthivasansureshO 914:49
whoami-rajatstarted reviewing the pure patch, lost track of time14:56
whoami-rajatI think that's all for today14:56
whoami-rajatthanks everyone for joining14:56
whoami-rajat#endmeeting14:56
opendevmeetMeeting ended Wed May  3 14:56:58 2023 UTC.  Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)14:56
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