Ah ha, I knew I'd seen this kind of thing somewhere before. There is an outstanding, unsolved race condition in libvirt wrt nwfilters that can cause hangs
https://bugzilla.redhat.com/show_bug.cgi?id=929412 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1228977 Title: n-cpu seems to crash when running with libvirt 1.1.1 from ubuntu cloud archive To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1228977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
