It appears this bug (or similar) is back in 0.12. See Debian bug report #580649 (http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=580649 ).
** Bug watch added: Debian Bug tracker #580649 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=580649 -- Block I/O crashes after migration https://bugs.launchpad.net/bugs/341682 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to kvm in ubuntu. -- 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
