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#openstack-nova - 2019-02-04
15:27:18 efried stephenfin: ack, thanks.
15:27:31 efried and, that makes sense; otherwise, how would it know?
15:33:31 mriedem dansmith: jaypipes: thanks on both, i'll work on follow ups this morning
15:34:00 openstackgerrit Jack Ding proposed openstack/nova master: Flavor extra spec and image properties validation https://review.openstack.org/620706
15:46:10 tinwood dansmith, would it be possible, please, for you to take a quick look at: https://review.openstack.org/#/c/633279/ thanks.
15:52:48 spatel sean-k-mooney: morning!
15:53:36 sean-k-mooney spatel: o/
15:53:53 spatel its been long time so thought "wave"
15:54:25 sean-k-mooney spatel: hopefully that means your cloud has been working to expectations
15:54:35 spatel i was busy in datacenter migration stuff.. but so far everything good
15:55:19 spatel My cloud is blooming...! +400 instance total and growing..
15:55:20 sean-k-mooney spatel: see now you have doomed yourself by saying that. but glad to hear
15:56:18 spatel Soon planning to build new cloud.. not sure how much i can stuff in existing one.
15:56:23 sean-k-mooney it will be interesting to hear form you in 12-18 month as to if it proved more cost effective vs aws in the long run
15:57:31 spatel Believe me... its very cost effective... + my 50% datacenter is empty because i am stuffing application as much as possible in cloud
15:58:23 sean-k-mooney spatel: and you are achiving the perfomance KPI that are needed for your workload?
15:58:46 sean-k-mooney i assume you are till using sriov
15:58:53 sean-k-mooney *still
15:58:59 spatel interesting thing.. we are running real-time application in very latency sensitive environment :) got very good feedback from customer also :)
15:59:19 spatel Yes everything in sriov ( next cloud going to be on dpdk )
16:00:04 sean-k-mooney well make sure to build a small test clust to verify its performacne before you make that switch
16:00:13 spatel we are providing close to HD audio quality with sr-iov
16:00:46 spatel ++ (will do lab test before go)
16:01:15 sean-k-mooney spatel: by the way you will be happy to know https://review.openstack.org/#/q/status:open+project:openstack/nova+branch:master+topic:bp/libvirt-neutron-sriov-livemigration is makeing good progress
16:01:57 spatel + boy... that would be my dream to do live-migration over SR-IOV
16:02:32 openstackgerrit Matt Riedemann proposed openstack/nova master: doc: link admin/configuration from admin home page https://review.openstack.org/634728
16:02:34 sean-k-mooney spatel: be aware that for direct mode sriov there is still a network outage unless you create a bond in the guest
16:03:08 spatel bonding in guest is other complicated project :(
16:03:44 sean-k-mooney spatel: this is basically the first step in sriov migratoin. for macvtap sriov it will be complete.
16:04:25 sean-k-mooney for direct mode sriov there are some upcoming feature in the kernel/kvm and in vendor nics that may help
16:04:26 spatel macvtap isn't good, i did try and got packet drops during load-test
16:04:34 sean-k-mooney ya
16:05:17 sean-k-mooney the ida would be you would bound a direct mode and macvtap vf together and fall back to the macvtap during migration and then swithc back to direct mode vf
16:05:40 spatel oh!!! that is sweet!
16:06:24 spatel i don't mind small downtime during live-migration as far as it meet SLA
16:07:06 spatel Do you think it will be ready in stain release ?
16:07:42 sean-k-mooney openstack wont do the bonding for you but i hope we will merge the migration support in stein yes
16:08:01 spatel cool!
16:08:22 sean-k-mooney spatel: currently the code is complete so we are just waiting for a runway slot and reviewer feedback at this point.
16:09:02 spatel I don't have any lab at present otherwise i love to do some testing..
16:09:58 openstackgerrit Matt Riedemann proposed openstack/nova master: doc: link Kashyap's cpu model talk to the libvirt driver config docs https://review.openstack.org/634731
16:09:59 mriedem kashyap: ^ nice talk
16:10:39 kashyap mriedem: Hi, thanks! /me practised it 4 times to a rubber duck
16:10:51 kashyap On a call; meetings--
16:11:19 mriedem kashyap: it showed that you practiced it, very smooth
16:11:25 mriedem but you were soooo thirsty
16:11:25 kashyap BTW, on Sunday ran into The Tuba Guy at FOSDEM. He happened to be sitting right behind me
16:11:42 kashyap mriedem: Darn, there is a story behind that water bottle trick
16:12:19 kashyap Back when I was in university, some 12 years ago, I had to give my first public talk on USB 3.0 or something...
16:12:35 kashyap And my throat completely dried out, and the teacher insulted me in front of the whole class:
16:12:43 kashyap Saying ... "What kind of a talk is that?!"
16:12:53 kashyap Never forget that experience
16:13:11 kashyap But more to the bottle: I use it as a trick to forcefully "pause" myself
16:13:15 kashyap And not drone on-and-on.
16:13:31 kashyap s/bottle/water bottle/
16:26:23 bauzas ok, bailing out from upstream after 3 hours working on it \o
16:26:36 bauzas https://twitter.com/sylvainbauza/status/1092426500434022402
16:27:01 bauzas at least I dedicated 3 hours for nova since 2 weeks...
16:28:01 sean-k-mooney bauzas: the vpn outage proably helped somewhat today
16:28:20 bauzas sean-k-mooney: not really, I planned to work for 3 hours anyway
16:29:07 bauzas I thought about this from the last weekend
16:29:19 sean-k-mooney i planned to start backpoting something and did some code review upstream instead
16:29:28 sean-k-mooney bauzas: its a good idea
16:29:33 bauzas and finally I think I very need to say "sorry but I need to work upstream *now*'
16:29:43 artom sean-k-mooney, to answer your downstream channel question, yeah, more work is required to actually generate the new XML
16:29:49 bauzas because if not, there will be some other priorities again and again
16:29:56 artom The claims are used to get the new instance NUMA topology
16:30:49 sean-k-mooney artom: are they actully used currently. i was not sure they were actully being used yet in the code you have pused.
16:31:06 artom sean-k-mooney, they're not used yet, no
16:31:32 sean-k-mooney artom: ok because the titile of https://review.openstack.org/#/c/634606/ consufed me a little
16:31:49 artom I mean, when creating the claim, the new instance NUMA topology is calculated, so it should throw a resources unavailable exception if it can't fit
16:32:03 artom But then that new topology isn't used anywhere (yet)
16:32:20 sean-k-mooney artom: ya that makes sense
16:32:35 artom sean-k-mooney, hrmm, yeah, maybe I'll rephrase it as "create claims" or something
16:32:44 artom Since as you correctly pointed out, they're not actually used
16:33:05 openstackgerrit Matt Riedemann proposed openstack/nova master: doc: update the security groups admin doc https://review.openstack.org/634735
16:33:28 sean-k-mooney ya i spend about 10-15 mins looking to see if they were actully used idrectly some how then my vpn dropped and i got tea
16:34:05 artom So British (yes, I know you're Irish)
16:34:22 sean-k-mooney those be fighting words :P
16:34:33 artom There's no "UK" adjective!
16:34:45 sean-k-mooney ireland is not in the uk
16:34:52 artom *facepalm*
16:34:57 artom You're right, of course.
16:35:04 kashyap mriedem: If I spend this week on this https://review.openstack.org/#/c/632507/ ([WIP] libvirt: Bump MIN_{LIBVIRT,QEMU}_VERSION for "Stein"), and related clean-ups -- worth getting in before M3?
16:35:51 artom There's no adjective for "those tea-guzzling bastids" then :D
16:36:07 sean-k-mooney hehe :)
16:37:32 openstackgerrit Matt Riedemann proposed openstack/nova master: Change nova-next job to run with python3 https://review.openstack.org/634739
16:39:00 mriedem kashyap: idk, i generally like to raise minimums at the beginning of the cycle
16:39:08 mriedem if we're going to raise minimums
16:40:24 mriedem an operator that was upgrading recently asked me if the last time we raised minimums (in queens i think) was because of any functional reason or just code cleanup since it meant they had a harder upgrade (new centos versions and such on their compute nodes)
16:41:25 mriedem they were also upgrading from mitaka though i think so likely going to have some of that (OS upgrades etc)
16:42:26 kashyap mriedem: Yeah, you're totally right -- I completely forgot at the beginning of the cycle about this :-(
16:42:27 stephenfin mriedem, sean-k-mooney: This feels like something that would warrant a reno given the change in behavior. Thoughts? https://review.openstack.org/#/c/626381
16:42:59 mriedem "fyi nova-compute will no longer corrupt your database you're welcome'
16:43:13 mriedem stephenfin: the behavior was shit
16:43:22 mriedem so if we have a reno, i'd make it a 'fixes' reno to explain the bug being fixed
16:43:41 stephenfin That it was. And I guess it's not something anyone would have been relying on
16:43:59 mriedem i.e. if you had allocated pci devices in your whitelist configuration, and then changed your config to remove those whitelisted devices, nova will no longer delete those records from the db since it corrupts the resource tracking for the allocated device
16:44:26 mriedem but i'm not sure ^ is worth explaining in a release note
16:44:33 mriedem it might just cause more confusion/concern than necessary

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