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#openstack-nova - 2020-06-25
15:06:39 sean-k-mooney aarents: is that the paralle snapshot feature
15:07:00 aarents bauzas: not sure of peremiter of libvirt can we consider it is ?
15:07:03 sean-k-mooney ya ill re review those today
15:07:04 aarents sean-k-mooney: yep
15:07:22 aarents sean-k-mooney: thanks
15:07:52 sean-k-mooney bauzas: gibi its not libvirt related it generic across all virt dirvers
15:08:06 sean-k-mooney bauzas: gibi but dont let that stop you reviewing :)
15:08:24 aarents ok
15:08:46 bauzas gibi: aarents: ack, will try to look at both changes
15:08:57 bauzas for the scope of the subteam, this can be large
15:09:06 bauzas I'm not opiniated on it
15:10:15 sean-k-mooney aarents: hehe i have draft comment on the first patch which i just pushed. the relese note comment is the only real one and its just on wording.
15:11:44 gibi aarents: I just wanted to know how this connects to the topic with bauzas.
15:12:01 gibi aarents: feel free to mention this during the meeint
15:12:02 gibi g
15:12:05 gibi meeting
15:12:31 gibi in the Open Discussion part
15:23:40 aarents gibi: Thank you, I cannot attend, I have to pick my daughter from school, nevermind don't spend time on it during meeting, nothing disruptive/blocking
15:23:50 aarents sean-k-mooney: thanks I will check
15:36:26 gibi aarents: OK. thanks
15:38:02 dansmith aarents: just two small things and then I'm +2
15:38:16 dansmith aarents: if you can get those done when you get back ping me and I'll circle back quickly
15:45:40 gibi nova team meeting starts in 15 minutes on #openstack-meeting-3
15:49:49 dansmith I might be in and out due to some local distraction, FYI
15:49:54 dansmith not sure there's much for me to say this week
15:50:12 bauzas maybe we can have a short meeting ?
15:50:21 dansmith been recheck grinding my patches in the runway and working on fixing glance and devstack issues so we can have a ceph multistore job
15:53:20 dansmith bauzas: is it hot there?
15:53:33 bauzas i can talk in Celsius, man
15:54:08 dansmith gonna be 30C here today
15:54:15 bauzas but I'll make an effort : 90 degrees
15:54:23 dansmith ah
15:54:39 bauzas fortunately, the pool is open 24x7
15:54:42 sean-k-mooney dansmith: i hope you have ac or its at least dry heat
15:54:51 sean-k-mooney dansmith: otherwise that is hell
15:55:04 dansmith sean-k-mooney: it's dry, pretty comfortable really
15:55:11 bauzas sean-k-mooney: I don't have A/C at home and the inside temperature is 28C
15:55:15 gibi dansmith: ack
15:55:22 dansmith we chill the house down with a fan overnight so it's cold and it lasts most of the day until things start cooling back off again
15:55:25 gibi I will aim for a short meeting
15:55:30 dansmith but we do have AC when necessary
15:55:59 bauzas many computers in a small room has a price
15:56:31 bauzas and a window opening to the West too
15:56:46 sean-k-mooney bauzas: ya the ceiling fan i installed in my ofice the fact i have roof windows works well.
15:57:16 sean-k-mooney just opening roof windows make a surprising difference
15:57:21 bauzas heh, in France we don't have ceiling fans, unless you wanna have a saloon
15:57:39 bauzas or you're about your 90s
15:57:50 bauzas we prefer sweating
15:58:02 sean-k-mooney bauzas: we dont have them in ireland normally either
15:58:17 sean-k-mooney bauzas: i just didnt want to by an ac systme yet
15:58:30 bauzas yeah me too
16:00:43 sean-k-mooney im currently planning to wait to get ac untill i also deside if im getting solar next year
16:12:39 jsuchome :q
16:12:57 jsuchome ouch, wrong window :-)
16:31:40 openstackgerrit sean mooney proposed openstack/nova stable/train: Silence amqp heartbeat warning https://review.opendev.org/728057
16:32:07 k_mouza good afternoon all! quick question please. I have a plain and simple openstack stein environment and I'm integrating a Ceph cluster with it. Is there a clean way of moving all the existing VMs (that reside on the hypervisors' local disks) to Ceph? I've tried draining a single hypervisor, configuring it to use Ceph, but then the migration of VMs to it fails because it can't find that VM's disk (it's expecting it in Ceph already I think).
16:32:42 k_mouza I could snapshot everything and re-spin it up of course, but was wondering if there's anything faster than that. Thanks a lot! :)
16:33:50 sean-k-mooney k_mouza: are you trying to change the image backend
16:34:02 sean-k-mooney e.g. form flat/qcow to rbd
16:35:13 sean-k-mooney i dont thik we support migration between hosts with different image backends at least i dont think we test it if we do
16:36:13 sean-k-mooney k_mouza: shelve and unshelve might be one way to do it but i have never tried that
16:37:02 sean-k-mooney k_mouza: the nova irc meeting is happeing right now so maybe someoen else will have a suggestion when that is over
16:39:05 josephillips hey sean-k-mooney do you know if is posible change the HW property created by a image on a running vm?
16:44:57 k_mouza sean-k-mooney: hmm, no, I haven't changed the image backend of the running VM. I will try shelving the VM before migrating it as well to see if that helps.
16:49:13 k_mouza sean-k-mooney: shelving and then un-shelving the VM did the trick! It picked the 2nd hypervisor and created the image in Ceph without issues. Thanks a lot for the tip!
16:50:03 k_mouza Now in order to control which hypervisor it's unshelved to, will need to disable and enable the corresponding nova-compute services?
16:51:43 sean-k-mooney josephillips: only via a rebuild currently
16:52:03 josephillips rebuild wil destroy the data?
16:52:08 josephillips or change mac address?
16:52:19 sean-k-mooney josephillips: i have been suggesting we should add a new api action to allow recreating a vm preseving its disk and other resouces but updating the flavor and image metadata
16:52:29 sean-k-mooney josephillips: it wont change mac
16:52:42 sean-k-mooney it will destroy the root disk
16:52:54 sean-k-mooney and i dont think its supported for boot form volume
16:53:10 sean-k-mooney josephillips: if you cant use rebuild today you have to do a db edit and then hard reboot
16:53:41 josephillips is what i belive that modifying novadb
16:53:44 sean-k-mooney k_mouza: i meant on the host but glad shelviing worked
16:53:45 josephillips will be the remedy
16:54:02 sean-k-mooney josephillips: what are you trying to change out of interest?
16:54:26 sean-k-mooney if i end up propsoinbg a spec for the recreate action i might include it as a use case
16:54:27 josephillips ok hw_disk_bus=scsi
16:54:37 josephillips works well fro new deployments
16:54:41 josephillips for new deployment
16:55:07 sean-k-mooney ah ok provided you are using disk lables or uuids to mount your files systems in fstabls changin the buss should be fine
16:55:17 sean-k-mooney if its a windows guest it might be unhappy
16:55:28 josephillips yeah i know
16:55:43 josephillips probably should be need to replace grub.conf
16:55:53 josephillips but is a change that we already know we have todo
16:56:03 sean-k-mooney normally grub.conf usses uuids by default
16:56:06 sean-k-mooney so it should be ok
16:56:22 josephillips just we need replace for the running instances
16:56:34 sean-k-mooney we stoped using /dev/sd* names quite a whgile a go in grub by default
16:57:05 josephillips yeah but these cloud still have /dev/s..
16:57:06 josephillips lol
16:57:20 josephillips so this hw metadata should be in novadb right
17:00:28 sean-k-mooney josephillips: ya its the instance_system_metadata table i think
17:00:31 sean-k-mooney in the cell db
17:00:56 sean-k-mooney i think you prefix the metadata key wiht img_ or iamge_
17:01:15 sean-k-mooney basicaly that is where we store the cache copy of the iamge metadata
17:01:16 gibi sean-k-mooney: I have to leave now but if akhil-g joins then from my perspective it is OK to add a service up check in the rebuild codepath
17:01:31 sean-k-mooney gibi: ya i was thinking the same

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