On Thu, Jun 28, 2012 at 04:26:15PM +0530, Trinath Somanchi wrote: > 2012-06-28 16:24:00 TRACE nova.compute.manager [instance: > 7741f67f-ad78-4777-a5a0-6636eb8b460e] libvirtError: Unable to read from > monitor: Connection reset by peer This looks like the interesting error messages from that huge log. What this is saying is that libvirt was talking to QEMU over to the monitor socket, when the monitor socket closed unexpectedly. This means that QEMU has quit, or more likely crashed. There could be a number of reasons for this. As a first step try and find the /var/log/libvirt/qemu/$GUESTNAME.log file and see if there are any messages from QEMU. If your host has any MAC system like SELinux or AppArmour, temporarily trying switching that into permissive mode to see if that fixes things. Also see if there are newer QEMU packages available from your distro vendor. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|