------- Comment From [email protected] 2019-01-10 00:15 EDT------- (In reply to comment #33) > This is just the libvirt as in Xenial plus the requested patches. > I don't see anything obvious to be wrong except if the requested changes > were incomplete. > > Could it be that the use case you are testing is affected by two things: > 1. the one we are trying to fix here > 2. a second one that is exposed once the first is fixed? > Looks like the we are hitting the second one, from the reference of this related bz comment for 17.04, https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1667805/comments/9, cpu hotplug feature for pseries was not complete/had to use different approach(device_add instead of cpu-add) in qemu 2.5 version which xenial and due to the fix of initial issue reported here, we hit now with actual failure, though error message here is misleading.
>From my previous bug reports, have learnt that vcpu hotplug for pseries works >from zesty(17.04), reference, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670315 and I could not find any working reference for vcpu hotplug on xenial for pseries neither supported/not-supported statement from ubuntu wiki aswell. If there are no plans to support vcpu hotplug for pseries in xenial, my suggestion would be having the error statement while trying hotplug be improved saying hotplug is not supported with version of qemu/libvirt, or we can bring in all the necessary changes required for vcpu hotplug in xenial aswell. please advice. Thanks a lot for the continued support on this. Regards, -Satheesh > In that case one would have to identify the further changes that would be > needed. > If you or one of your dev's knows about extra changes needed for #2 let me > know and we can give it a try. > > But given that this seems more Lab than Field issue (there were no other > examples so far) this gets more and more complex but I wonder for what. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1,16-17' for 'cpuset.mems': Invalid argument" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1709877/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
