> - Need little more info about how did you capture the blktrace. So you > started blktrace and then started dd in parallel in all the three > VMs and immediately system freezes and these are the only logs we see > on console? Almost ... The ssh connection through which I start the vmstat and/or blktrace never froze (not before, either). I can use that shell in the situation until I try accessing anything on a block device. So the blktrace was started before dd was started and blktrace was stopped (CTRL+C) while dd was still running. hth Dominik -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list