Wednesday, 2020-12-02

openstackgerritKeigo Noha proposed openstack/nova stable/stein: Change default num_retries for glance to 3  https://review.opendev.org/c/openstack/nova/+/76496300:23
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openstackgerritJorhson Deng proposed openstack/nova-specs master: Remove RPC call to ensure volume attachment successful  https://review.opendev.org/c/openstack/nova-specs/+/75892001:18
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openstackgerritJorhson Deng proposed openstack/nova-specs master: Remove RPC call to ensure volume attachment successful  https://review.opendev.org/c/openstack/nova-specs/+/75892001:41
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chengsheng1I am a new contributor. My code has been submitted for a long time, but there is no review. I ask for help if there is a problem with which process.   https://review.opendev.org/c/openstack/nova/+/762330/01:57
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melwittkashyap, sean-k-mooney: patch you have reviewed in the past has been updated recently ^03:57
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openstackgerritWenping Song proposed openstack/nova master: Nova supports password encrypted VNC  https://review.opendev.org/c/openstack/nova/+/62233606:51
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openstackgerritXinran WANG proposed openstack/nova-specs master: Smart-nic Support Specification  https://review.opendev.org/c/openstack/nova-specs/+/74278508:15
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openstackgerritAdit Sarfaty proposed openstack/nova stable/train: Retry on vmware create_vm when it fails  https://review.opendev.org/c/openstack/nova/+/76451508:45
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kashyapmelwitt: chengsheng1: Hi, looking09:14
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kashyapchengsheng1: There's no problem with process; just getting around to it.  A quick comment here, but I'll respond in detail on the patch09:21
kashyapchengsheng1: Along with compare_hypervisor_cpu() the spec I wrote also suggests to introduce a baseline_hypervisor_cpu() method09:21
kashyapchengsheng1: I wonder if you looked into it; it's okay if you haven't yet, we can sort out the details on the review.09:22
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chengsheng1kashyap: If the baseline_hypervisor_cpu() method is necessary, I can modify the code.09:39
kashyapchengsheng1: I'll comment on the change.  I see you've updated the existing get_capabilities() method w/ the newer baselineHypervisor... I don't think we can just replace the older API just like that.09:40
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chengsheng1kashyap: This modification has a relatively small impact on the overall code.09:43
kashyapchengsheng1: Yes, I see that.  Did you also get to do any real live migration tests?09:44
chengsheng1kashyap: Yes, I did tests in several real environments, and it also solved the problems I encountered.09:46
kashyapchengsheng1: Ah, cool.09:48
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LarsErikPHi guys. I've just submitted a bug about how nova treats GPUs that's using SR-IOV for VGPUs (mainly the Nvidia A100). It's kinda weird.. https://bugs.launchpad.net/nova/+bug/1906494 hope you can figure something out :-)09:55
openstackLaunchpad bug 1906494 in OpenStack Compute (nova) "Placement error when using GPUs that is utilizing SR-IOV for VGPU" [Undecided,New]09:55
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gibiLarsErikP: seems like a valid bug. Nova assumes that an inventory total can be set to 0 in placmenet, but placement does not allow that10:06
gibibauzas: ^^10:06
gibibauzas: it is about VGPU:total=010:07
LarsErikPgibi: thanks for the quick feedback!10:09
gibiLarsErikP: I need bauzas to confirm it more from vgpu perspective, but If we need to model 0 inventory then either we have to remove the whole resource class from the inventory, or keep the total value positive but increase the reserved value to express that there is no free VGPU resource left10:11
LarsErikPI see. I also whish there was someway to workaround this issue while waiting for a fix.. But I can't really think of anything smart10:13
gibiright now, me neither. I guess if you manually fix the placement inventory be removing the VGPU rc from the RPs then nova-compute tries to put it back with total=0 and still fail10:14
gibis/be/by10:14
LarsErikPalready tried that :P10:14
gibi:)10:15
gibiI don't want to suggest yout to hack the placment code to allow total=010:15
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gibibut the schema validation that fails is here https://github.com/openstack/placement/blob/c02a073c523d363d7136677ab12884dc4ec03e6f/placement/schemas/inventory.py#L2910:16
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openstackgerritLee Yarwood proposed openstack/nova-specs master: DNM/WIP Remove device from attach_volume request response  https://review.opendev.org/c/openstack/nova-specs/+/76509710:30
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stephenfinman, https://bugs.launchpad.net/tempest/+bug/1906428 appear to have pretty much broken the gate :-(10:47
openstackLaunchpad bug 1906428 in OpenStack Compute (nova) "test_cold_migrate_unshelved_instance failing with cat: can't open '/mnt/timestamp': No such file or directory" [Critical,Confirmed]10:47
stephenfinand I can't figure out what's changed10:48
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lyarwoodstephenfin: yeah it's weird, I don't understand how the test ever worked prior to that change anyway tbh10:49
lyarwoodoh wait!10:49
stephenfinWhat's the idea behind? That you'd create a file and it would still exist after you'd stashed, offloaded and unstashed10:49
lyarwoodstephenfin: I don't think we offload10:50
lyarwoodstephenfin: doesn't that just pause and unpause10:50
lyarwoodstephenfin: so the mount within the guestOS persists10:50
lyarwoodstephenfin: but now as we cold migrate we essentially reboot the instance clearing the mount10:50
stephenfinI see "Shelve offloading" followed by "Instance destroyed successfully" in the log I'm looking at10:51
lyarwoodah kk10:51
stephenfinsearch for tempest-TestShelveInstance-307565458 here https://zuul.opendev.org/t/openstack/build/41da7c0de7994dddb641c0a783b53c70/log/compute1/logs/screen-n-cpu.txt10:51
lyarwoodif it's dead then I'm back to not understanding how this ever worked10:51
lyarwoodunless verification was off in the job10:51
lyarwoodso these checks were skipped10:51
stephenfinaarents: Have you seen https://bugs.launchpad.net/tempest/+bug/1906428 ?10:51
openstackLaunchpad bug 1906428 in OpenStack Compute (nova) "test_cold_migrate_unshelved_instance failing with cat: can't open '/mnt/timestamp': No such file or directory" [Critical,Confirmed]10:51
lyarwoodhttps://review.opendev.org/c/openstack/tempest/+/765079 I've posted a revert10:53
lyarwoodbrb10:53
stephenfinI see 186 hits. Nice10:53
stephenfinhttps://review.opendev.org/c/opendev/elastic-recheck/+/76510810:54
stephenfinOh, I didn't know that that patch only merged two days ago /o\10:56
stephenfinI was looking at the author date in Git and thought something had regressed10:57
stephenfinYeah, let's yank that for sure10:57
gibilyarwood, stephenfin: nice teamwork on this gate blocker10:58
lyarwoodnp11:08
masterpeHi, I try to live migrate a instance to a specific host. But I get the error: "There is not enough capacity on the host for the instance." but on the "openstack hypervisor show" gives me enough resources left. In the allocations table of database nova_api I see some ghost resources. What can I do to fix this? I'm running Train.11:11
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stephenfinmasterpe: Don't trust os-hypervisors. It lies. Placement is where you want to get your information https://specs.openstack.org/openstack/nova-specs/specs/wallaby/approved/modernize-os-hypervisors-api.html11:15
stephenfinWhat do you mean by ghost resources?11:16
lyarwoodhttps://review.opendev.org/c/openstack/nova/+/720838 - huh we didn't backport this in the end11:16
stephenfinIf placement's inventory is wrong, you'll want to use nova-manage to handle things https://docs.openstack.org/nova/latest/cli/nova-manage.html#placement11:16
lyarwoodstephenfin: that isn't in train11:16
stephenfinoh, jinx11:16
stephenfindamn :(11:16
lyarwoodbrb again11:17
stephenfintopic for discussion in tomorrow's meeting? gibi ^11:17
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masterpestephenfin: I see UUID of instances that I can not find anymore with "openstack server show"11:23
openstackgerritMerged openstack/nova-specs master: libvirt: Store and allow the default machine type to be changed  https://review.opendev.org/c/openstack/nova-specs/+/76219911:24
gibistephenfin: you mean backporting placement audit to stable branches?11:37
stephenfinyes11:37
gibiwould be good to know why we abandoned the backports11:38
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gibianyhow I can add it to tomorrow's agenda11:41
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aarentsstephenfin lyarwood gibi Hi sorry, I'm blocked in a block in some training sessions this week, this issue is odd.. because it is working in tempest-slow-py3  https://zuul.opendev.org/t/openstack/build/41a4f9aa2b084025b4f928b6a8187802/log/job-output.txt11:58
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lyarwoodaarents: yeah odd, it's calling cat on the mount and that appears to be passing12:05
lyarwoodhttps://zuul.opendev.org/t/openstack/build/41a4f9aa2b084025b4f928b6a8187802/log/controller/logs/tempest_log.txt#3579312:05
aarentsfor me /mnt is part of '/' there is no mount12:05
lyarwoodhttps://zuul.opendev.org/t/openstack/build/41a4f9aa2b084025b4f928b6a8187802/log/controller/logs/tempest_log.txt#3562312:05
lyarwoodyeah12:05
lyarwoodwas about to say12:06
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aarentsmay be patch not working in multi-cell context, need to check logs, may be we can put it in blacklist of nova-multi-cell instead of revert, the time to check.12:13
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lyarwoodaarents / stephenfin ; right this is a cross cell resize in the context of the job12:55
lyarwoodthis smells like a bug with the cross cell resize flow tbh12:55
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aarentslyarwood: hum something like a rebuild from base image instead scp the disk ?13:00
gibiI think cross cell resize do a snapshot instead of scp13:00
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lyarwoodyeah it's a cold snapshot13:01
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openstackgerritTakashi Natsume proposed openstack/nova stable/ussuri: Fix a hacking test  https://review.opendev.org/c/openstack/nova/+/76508213:03
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lyarwoodI don't think it's being used however13:04
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aarentsI can see rebase is done after unshelve so instance disk should be fine before resize(cold snap)  Running cmd (subprocess): qemu-img rebase -b /opt/stack/data/nova/instances/_base/30b9e4f95a51c37d278a2a0a447a270519e2be92 -F raw /opt/stack/data/nova/instances/9616dc4e-c2b8-46be-bf5c-6de9a11330f8/disk13:11
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openstackgerritBalazs Gibizer proposed openstack/nova master: Support interface attach with qos ports  https://review.opendev.org/c/openstack/nova/+/75653013:18
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openstackgerritAleksey Ulyanov proposed openstack/nova master: Fix graceful shutdown timeout  https://review.opendev.org/c/openstack/nova/+/76492713:30
lyarwoodaarents: yeah the spawn is using the original image13:32
lyarwoodaarents: this is a bug in the cross cell resize flow somewhere13:32
lyarwoodaarents: http://paste.openstack.org/show/800633/13:32
lyarwoodaarents: ^ that's the qemu-img commands we run, we use the same base as the original spawn13:32
lyarwoodoh wait because we rebase13:33
lyarwoodduring unshelve13:33
lyarwoodsorry I'm getting all confused13:33
lyarwoodah but it's recreating the overlay13:36
aarentslyarwood how it recreates the overlay ?13:40
lyarwoodaarents: I think it's doing it based on the image_meta we pass into driver.spawn here https://github.com/openstack/nova/blob/f0efcae6975a99044ef7052453f905f60fcecac6/nova/compute/manager.py#L6015-L601913:41
lyarwoodaarents: but I'm not sure why that isn't the snapshot image_meta at this point13:42
lyarwoodaarents: brb13:42
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aarentsYeah it should be the same code than in unshelve where it should use image-id from snapshot(stored in system_metada)13:52
aarentshttps://github.com/openstack/nova/blob/f0efcae6975a99044ef7052453f905f60fcecac6/nova/conductor/manager.py#L93213:52
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aarentsha it is here where it should take the snapshot_id https://github.com/openstack/nova/blob/f0efcae6975a99044ef7052453f905f60fcecac6/nova/compute/manager.py#L590613:59
lyarwoodaarents: right but in this case it looks like snapshot_id wasn't passed and we fallback to the instance.image_meta14:01
lyarwoodaarents: at least that's what I'm assuming14:02
lyarwoodLet me blacklist this test in the multi cell job for now and throw up another DNM change adding some debug around this flow14:02
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aarentslyarwood: agree14:03
openstackgerritBalazs Gibizer proposed openstack/nova master: Support interface attach with qos ports  https://review.opendev.org/c/openstack/nova/+/75653014:06
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openstackgerritLee Yarwood proposed openstack/nova master: nova-multi-cell: Skip test_cold_migrate_unshelved_instance  https://review.opendev.org/c/openstack/nova/+/76514114:06
lyarwoodstephenfin / gibi ; ^ okay lets try it this way, skipping the test in the job directly as it looks like an issue with cross cell resize.14:07
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gibilyarwood: ack +214:11
aarents+114:12
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openstackgerritLee Yarwood proposed openstack/nova master: DNM - debug test_cold_migrate_unshelved_instance on nova-multi-cell  https://review.opendev.org/c/openstack/nova/+/76514514:18
lyarwoodet voilĂ 14:18
lyarwoodall because I don't want to build an env for this locally14:18
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aarentslyarwood: https://review.opendev.org/c/openstack/nova/+/765145/1/nova/compute/manager.py#590614:25
lyarwoodaarents: https://realpython.com/python-f-strings/#f-strings-a-new-and-improved-way-to-format-strings-in-python14:25
aarentslyarwood: thks14:26
lyarwoodnp14:26
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gibilyarwood: just note that fstring in LOG calls does not delay interpolation14:32
lyarwoodyup but in this situation I'm just dumping things to troubleshoot, not landing the changes in master :)14:33
gibisure14:33
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openstackgerritBalazs Gibizer proposed openstack/nova master: Support interface attach with qos ports  https://review.opendev.org/c/openstack/nova/+/75653015:17
openstackgerritBalazs Gibizer proposed openstack/nova master: Enable mypy on scheduler/report.py  https://review.opendev.org/c/openstack/nova/+/76515215:18
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LarsErikPgibi: found a workaround =)15:22
LarsErikPgibi: I tweak nvidia's sriov-manage script from creating all the VFs the GPU is capable of, to only create two15:23
gibiLarsErikP: nice15:23
LarsErikPgibi: then I cleaned up the resource providers, and now everything is fine.. Kinda dirty, but it works..15:23
openstackgerritBalazs Gibizer proposed openstack/nova master: Make remove allocation symmetric with add allocation  https://review.opendev.org/c/openstack/nova/+/75711015:24
openstackgerritBalazs Gibizer proposed openstack/nova master: Factor out port resource deallocation  https://review.opendev.org/c/openstack/nova/+/75711115:24
LarsErikPI've asked nvidia enterprise support if there is a "proper" way of doing this. The specifically say in the grid docs that you should _never_ use anything else than their script to enable the sr-iov functions15:24
LarsErikPbut they did no say I shouldn't edit their script... :P15:24
gibi:D15:24
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openstackgerritBalazs Gibizer proposed openstack/nova master: Refactor update_pci_request_spec_with_allocated_interface_name  https://review.opendev.org/c/openstack/nova/+/75761415:27
openstackgerritBalazs Gibizer proposed openstack/nova master: Support interface attach with qos ports  https://review.opendev.org/c/openstack/nova/+/75653015:27
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openstackgerritBalazs Gibizer proposed openstack/nova master: Enable mypy on scheduler/report.py  https://review.opendev.org/c/openstack/nova/+/76515215:29
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openstackgerritLee Yarwood proposed openstack/nova-specs master: Image and flavor defined ephemeral storage encryption  https://review.opendev.org/c/openstack/nova-specs/+/75228415:35
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openstackgerritBalazs Gibizer proposed openstack/nova master: Enable mypy on scheduler/report.py  https://review.opendev.org/c/openstack/nova/+/76515215:41
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openstackgerritArtom Lifshitz proposed openstack/nova master: Docs: correct cpu_thread_policy explanation  https://review.opendev.org/c/openstack/nova/+/76517216:33
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lyarwoodgibi / aarents ; I'm going to be out on PTO for the rest of the week btw in regards to the cross cell resize16:46
lyarwoodbug*16:46
openstackgerritArtom Lifshitz proposed openstack/nova master: Docs: correct cpu_thread_policy explanation  https://review.opendev.org/c/openstack/nova/+/76517216:47
gibilyarwood: thanks for the heads up16:48
gibiI will make sure the backlisting merges16:48
lyarwoodack thanks, I can pick up the fix on Monday16:48
lyarwoodif aarents doesn't make progress16:48
gibihave a nice time off16:49
lyarwoodlockdown ended today in England and my child is in nursery for the first time tomorrow, so don't worry I'll be having a nice time :D16:49
lyarwoodsleeping mostly16:49
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gibisleeping is good16:50
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kashyapYes, it adds years to life. (Cf. https://www.penguin.co.uk/books/295/295665/why-we-sleep/9780141983769.html)17:09
kashyap(Counter-intuitively, enough ;-))17:09
openstackgerritBalazs Gibizer proposed openstack/nova master: Support interface attach with qos ports  https://review.opendev.org/c/openstack/nova/+/75653017:18
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efried+1 Why We Sleep -- life-changing read.17:34
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gmanngate is too slow today, this did not get the node yet. waiting since 4 hrs- https://review.opendev.org/c/openstack/nova/+/76514118:14
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openstackgerritmelanie witt proposed openstack/nova master: WIP Omit resource inventories from placement update if zero  https://review.opendev.org/c/openstack/nova/+/75934818:55
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rm_workIs there a way to NOT have a default AZ, and to *require* the user specify one in their server-create command? or would that require a patch?22:28
rm_workit seems we just removed the section from our config without thinking about it very much, but that had the effect of just causing the default AZ to be "nova" (default default) which does not exist in our cloud22:29
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sean-k-mooneynot that i can see no22:50
rm_workyeah looks like it has to be a custom patch22:50
rm_workah well22:50
sean-k-mooneyvms always need a AZ22:50
sean-k-mooneyrm_work: well you can propose it upstream or do it with api middelware22:50
sean-k-mooneye.g. you coudl write middleware to reject all server creates that dont have an az22:51
rm_workyeah that might be an interesting approach22:51
sean-k-mooneythis is config driven api bevhiaor and will break interoprablity between your cloud and others however22:51
sean-k-mooneye.g. by default you should be able to boot without specifying an az22:52
sean-k-mooneyso it will be a qurik of your cloud that its always required22:52
rm_workyeah, unfortunate but documentable22:52
rm_workand internal only cloud so not hugely worried22:52
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openstackgerritDatLQ proposed openstack/nova stable/victoria: Fix unplugging VIF when migrate/resize VM  https://review.opendev.org/c/openstack/nova/+/76450423:09
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dcapone2004hi, is there any using openstack flavor traits/image metadata to pass a very specific CPU configuration to qemu-kvm in openstack nova when a virtual machine is started?  Essentially, we are trying to find a way to implement this solution in an openstack environment23:57
dcapone2004https://www.mess.org/2020/06/22/Hyper-V-in-KVM/#:~:text=Hyper%2DV%20on%20Windows%20requires,it%20is%...23:57

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