I've been able to narrow this down a little more. The number of VM guests is not a factor, this has happened on a VM host with only one guest. The VM guest kernel does not seem to matter either, even VM guests which are Linux distros other than Ubuntu are affected.
It seems that the /usr/bin/kvm process goes into an infinite loop during VM guest shutdown. I'm still investigating this further. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in Ubuntu. https://bugs.launchpad.net/bugs/882579 Title: Some Commands return: "Timed out during operation: cannot acquire state change lock" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/882579/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
