Public bug reported: == Comment: #0 - Kowshik Jois B S <[email protected]> - 2024-05-21 01:41:34 == I have created a guest with maxcpus as 128 and given current value as 4. When I try to hotplug 68 or more cpus, the guest is entering the shut off state.
This behavior was observed initially on the guest with 2G Memory. Then I increased it to 4G but exactly the same behavior is seen again! ---uname output--- Linux ubuntulp3host 6.8.0-31-generic #31-Ubuntu SMP Sat Apr 20 00:05:55 UTC 2024 ppc64le ppc64le ppc64le GNU/Linux Machine Type = P10 Denali Contact Information = [email protected] ---Steps to Reproduce--- 1. virsh define hotplug.xml 2. virsh start Ubuntu --console 3. On the other L1 terminal, virsh setvcpus Ubuntu 68 Expected Output: 68 cpus should be hotplugged. Actual output: 1. guest session terminated. 2. root@ubuntulp3host:~# virsh setvcpus Ubuntu 68 error: Unable to read from monitor: Connection reset by peer 3. host dmesg: [257209.825657] audit: type=1400 audit(1716219915.959:190): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="libvirt-6c80667b-c7e4-42d0-ad6f-13ba24e6b059//passt" pid=11594 comm="apparmor_parser" [257211.741363] virbr0: port 1(vnet0) entered learning state [257213.761361] virbr0: port 1(vnet0) entered forwarding state [257213.761369] virbr0: topology change detected, propagating [257251.720268] KVM: Create Guest vcpu hcall failed, rc=-44 [257251.782307] virbr0: port 1(vnet0) entered disabled state [257251.782609] vnet0 (unregistering): left allmulticast mode [257251.782612] vnet0 (unregistering): left promiscuous mode [257251.782615] virbr0: port 1(vnet0) entered disabled state [257251.996802] audit: type=1400 audit(1716219958.127:191): apparmor="STATUS" operation="profile_remove" profile="unconfined" name="libvirt-6c80667b-c7e4-42d0-ad6f-13ba24e6b059" pid=11720 comm="apparmor_parser" please include this patch https://lore.kernel.org/qemu- devel/[email protected]/T/#m9081c12e6fb42f34ebff78d91beee9dbfc5990fd ** Affects: ubuntu-power-systems Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Affects: qemu (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64le bugnameltc-206641 severity-high targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-206641 severity-high targetmilestone-inin--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2067383 Title: [Ubuntu24.04] hotplug of 68 or more cpus is making the guest shutoff! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/2067383/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
