Hi, As $subject, e.g. the monitor is being used by netcat. Is it expected? Should we only skip to reconnect the domain monitor which is being locked by other app with a timeout specified on "qemuMonitorOpenUnix" (it blocks when trying to connect to the unix socket)? so that it can get a connection, and could manage other domains. How to produce: 1) # service libvirtd stop 2) # nc -U /var/lib/libvirt/qemu/$guest.monitor 3) # virsh (hangs forever if nc process is not killed) Regards Osier