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#openstack-nova - 2025-10-02
20:16:12 sean-k-mooney i know there was some code up for that but i lost track for where that review was
20:16:44 sean-k-mooney noonedeadpunk: this was your spec for that https://review.opendev.org/c/openstack/nova-specs/+/955783
20:17:01 sean-k-mooney but i also belive there was a specless blueprint approved indepently?
20:18:19 sean-k-mooney this was your bluepint https://blueprints.launchpad.net/nova/+spec/libvirt-parallel-migrate but https://blueprints.launchpad.net/nova/+spec/libvirt-migrate-parallel
20:18:29 sean-k-mooney was appoved then deferd
20:20:03 sean-k-mooney noonedeadpunk: so we currently have two competing propsoals for this one form you and another form Fabian Wiesel
20:22:58 sean-k-mooney noonedeadpunk: given they have revierd and +1 your versiohn i assume yours is the one that we inteded ot proceed with but we shoudl abandon one fo them and if decied if its goign to be specless or requrie a spec
20:24:41 sean-k-mooney Uggla: fyi ^ do you have any prefernce on which of the two blueprint we use and if we want to proceed specless or not
20:34:16 melwitt sean-k-mooney: do you happen to know if this needs to be changed to something else, perhaps devstack@q-ovn-metadata-agent ? now that q-agt is not used? https://github.com/openstack/nova/blob/master/roles/run-evacuate-hook/tasks/main.yaml#L24
20:35:37 melwitt I'm working on vtpm tempest tests and noticed the error "controller | Unit devstack@q-agt.service could not be found." in the zuul stream
23:10:42 opendevreview melanie witt proposed openstack/nova master: DNM vtpm tempest https://review.opendev.org/c/openstack/nova/+/957477
23:10:43 opendevreview melanie witt proposed openstack/nova master: TPM: add documentation and reno for live migration https://review.opendev.org/c/openstack/nova/+/962889
23:21:33 opendevreview melanie witt proposed openstack/nova master: TPM: add documentation and reno for live migration https://review.opendev.org/c/openstack/nova/+/962889
23:21:33 opendevreview melanie witt proposed openstack/nova master: DNM vtpm tempest https://review.opendev.org/c/openstack/nova/+/957477
#openstack-nova - 2025-10-03
07:02:57 noonedeadpunk sean-k-mooney: Uggla fwiw, I also have an implementation for parallel live migrations as well: https://review.opendev.org/c/openstack/nova/+/955784
07:03:59 noonedeadpunk and yeah, I missed the specless one when was working on it :(
07:05:25 bauzas sounds to me a good PTG discussion anyway :)
07:05:51 bauzas it looks like we have a momentum, it would be sad to not having anything for Gazpacho :)
07:06:20 noonedeadpunk and regarding iothreads - I think I have yet another thing to add. or well. there is a specless blueprint already, and I have minimal implementation
07:06:34 noonedeadpunk yeah, totally sounds like a good topic for the PTG
07:06:44 Uggla noonedeadpunk That's a bit sad, to have competing proposal. Anyway yes I agree let's discuss that at PTG.
07:07:28 noonedeadpunk Uggla: they are *exactly* the same
07:07:36 noonedeadpunk so nothing sad I guess
07:08:54 bauzas oh yeah, that just means this should be a good and important effort for this cycle :)
07:08:57 noonedeadpunk I even come up with exactly same config name
07:09:11 noonedeadpunk without seeing yours
07:09:18 bauzas do you read minds ? don't reply, I'm afraid of the answer
07:09:18 Uggla sad because we have to choose one and for one of you, it is a "waste" of time.
07:09:59 bauzas were the competing blueprints both accepted ?
07:10:12 noonedeadpunk neither was so far
07:10:18 noonedeadpunk and one blueprint is specless
07:10:21 noonedeadpunk another has a spec
07:10:34 bauzas if not, that's understandable that two different people can start working on a same feature, while nothing is communicated
07:10:36 noonedeadpunk and given implementation is the same, I don;'t think much time was wasted
07:10:58 noonedeadpunk btw
07:11:12 noonedeadpunk author of https://blueprints.launchpad.net/nova/+spec/libvirt-migrate-parallel voted positively on my implementation :)
07:11:28 bauzas that's cool
07:11:29 noonedeadpunk So they are at least aware of this
07:14:11 noonedeadpunk but regarding iothreads, I think I have one more thing to add on top of https://review.opendev.org/c/openstack/nova-specs/+/938823 and https://review.opendev.org/c/openstack/nova-specs/+/951636
07:15:25 noonedeadpunk or well. let's discuss on PTG :D
07:15:28 bauzas not sure I understand the relationship between io threads and network IDs, but that's probably related to some network IO concern. Anyway, let's wrap that for the PTG
07:16:12 noonedeadpunk if you get into umbrella of "improving guest performance and enable threading capabilities exposed by libvirt" - they are
07:16:16 noonedeadpunk but yeah
07:16:44 noonedeadpunk it can be all formulated as one point in cycle-highlights :)
07:17:00 bauzas glancing at https://review.opendev.org/c/openstack/nova-specs/+/938823/4/specs/2025.2/approved/network-id-query.rst, this was apparently a Nova API performance change, not something related to libvirt
07:17:18 bauzas but I can be wrong
07:17:35 noonedeadpunk oh, I get the wrong spec then
07:20:16 Uggla noonedeadpunk, add this point (// live migration) the ptg agenda ? If not already done.
07:20:51 noonedeadpunk do you have a specific etherpad for PTG already?
07:20:56 Uggla yes
07:21:15 noonedeadpunk oph, it's in channel; topic
07:21:26 Uggla not updated yet in the channel
07:21:46 Uggla https://etherpad.opendev.org/p/nova-2026.1-ptg
07:21:49 noonedeadpunk ok, and replacing 2025.2 with 2026.1 gives the new one
07:27:40 noonedeadpunk done, thanks!
09:39:57 opendevreview Balazs Gibizer proposed openstack/placement master: Remove excessive logging from GET a_c https://review.opendev.org/c/openstack/placement/+/962775
09:39:58 opendevreview Balazs Gibizer proposed openstack/placement master: Prune search space with invalid prefixes https://review.opendev.org/c/openstack/placement/+/962776
09:39:58 opendevreview Balazs Gibizer proposed openstack/placement master: Reproduce GET a_c slowness https://review.opendev.org/c/openstack/placement/+/962596
09:40:40 gibi sean-k-mooney: bauzas: I moved https://review.opendev.org/c/openstack/placement/+/962775 to the front of the bugfix series as it can land already while I'm cleaning up the rest. So if you have time I appreciate a review there
09:42:05 bauzas gibi: I can try to look at it this afternoon
09:42:13 bauzas I don't have a lot of context but I'll try to find it :)
09:42:25 gibi that patch removes two debug logs that is it
09:42:26 gibi :)
09:42:41 gibi those debug logs generated gigabyte of logs
09:42:48 gibi in certain queries
09:43:04 bauzas ahah I see, then hopefully it should be simple to review :)
09:43:10 gibi it is :)
09:43:24 gibi the rest is a lot more complex and not ready for final review
09:45:06 bauzas yup, saw it
09:45:07 bauzas +2d
09:45:12 gibi thanks
09:45:17 gibi have a nice session in the gym
09:45:35 Uggla ping sean-k-mooney about https://launchpad.net/nova/2026.1
09:45:43 bauzas well, it will be outside :)
09:45:57 bauzas more a cardio session than a gym
09:48:32 sean-k-mooney[m] Uggla: that looks correct as do the status of the other serise +1
10:05:37 opendevreview Balazs Gibizer proposed openstack/placement master: Reproduce GET a_c slowness bug/2126751 https://review.opendev.org/c/openstack/placement/+/962596
10:05:38 opendevreview Balazs Gibizer proposed openstack/placement master: Prune search space by invalid prefixes https://review.opendev.org/c/openstack/placement/+/962776
10:13:13 opendevreview Balazs Gibizer proposed openstack/placement master: Prune search space by invalid prefixes https://review.opendev.org/c/openstack/placement/+/962776
10:30:07 sean-k-mooney bauzas: the only releationship is the same person was proposing both specs
10:31:11 sean-k-mooney bauzas: masahito was interested in implente iothread, mapping io queue to iothread adnfilterign service by network in the last ptg
10:32:31 sean-k-mooney my io thread spec focuse just on the the simplest useful implemeation of iothread basicly spliting it out form the ioqueue work so it can be delivered independtly and incrementally
10:33:21 sean-k-mooney bauzas: im hoping masahito or noonedeadpunk or anyone else who is interested will have time to work on some of these prosposals this cycle
10:34:06 sean-k-mooney if not i will proably try to impelment one of the propsosal but i woudl prefe to just help them by reviewing there work
10:34:40 sean-k-mooney i do think thses woudl be good enachnmemnt however so if there isnt a comunity effort to move them forward ill see if i can help more directly
11:12:55 noonedeadpunk yeah, I think I should be able to pull couple of them
13:01:43 opendevreview Merged openstack/python-novaclient master: Use pre-commit for lint jobs https://review.opendev.org/c/openstack/python-novaclient/+/952987
13:10:56 opendevreview Merged openstack/python-novaclient master: tests: Remove use of ddt https://review.opendev.org/c/openstack/python-novaclient/+/953193
13:35:32 opendevreview Ian Watson proposed openstack/nova master: Changing how placement updates are triggered in RT https://review.opendev.org/c/openstack/nova/+/955687
14:59:13 opendevreview Balazs Gibizer proposed openstack/placement master: Prune a_c search space by invalid prefixes https://review.opendev.org/c/openstack/placement/+/962776
15:00:10 gibi sean-k-mooney[m]: dansmith: ^^ now with a long commit message and a workaround flag
15:03:31 sean-k-mooney gibi: so you runign with 21 because well that is what the bug report used. have you tried bumping to 32 PFs
15:03:44 sean-k-mooney gibi: basiclly im wondering how much headroom this is geting us
15:04:05 sean-k-mooney 7 seconds for the 21_21 case is not bad
15:04:11 ratailor sean-k-mooney, gibi elodilles could you please review https://review.opendev.org/q/I04f6e1ba3eff443d40a13c6fe2d0b77a78a020e6
15:04:35 sean-k-mooney much better thne before you started im juust wonderign if it will explode at say 24_24 or can we push to 32+
15:06:27 gibi sean-k-mooney: yeah 21 is the magic number from the customer. I can add more cases.
15:06:39 gibi please leave a comment in the review so I won't forget
15:06:54 sean-k-mooney a standard 2U server can typicaly hold 24 2.5" ssd's in the front which woould also need 96 pci lanes to support at full speed. given many chips top out at 96-128 lanes with some going ot the low 160s range 32 device is proably close to the max we woudl expct to see
15:07:35 sean-k-mooney sure i can im ok with the current test uing the reproted worse case i just was wondering if you had playied aroudn with it

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