Sergey, here is the steps I've followed : $ virsh start oneiric Domain oneiric started
$ virsh setvcpus oneiric --count 2 --live $ virsh list Id Name State ---------------------------------- At this point the guest is dead and I need to start it again : $ virsh start oneiric Domain oneiric started $ virsh vcpucount oneiric maximum config 2 maximum live 2 current config 1 current live 1 You see that the CPU that was hot plugged is not there anymore. The offline method works though : $ virsh setvcpus oneiric --count 2 --config -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/878422 Title: CPU hot plug kills the guest To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/878422/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
