Dear i follow foc. for Live migration function by NFSv4. http://docs.openstack.org/trunk/openstack-compute/admin/content/configuring-migrations.html but when i use the command: #nova live-migration 08e028a5-1fc3-48d0-9de9-6a1c24733e95 HostB the libvirt will occur error message: 3758: error : virNetClientProgramDispatchError:174 : Unable to pre-create chardev file '/mnt/instances/instance-00000012/console.log': No such file or directory i'm sure the instance path have "console.log" file. and i found information: https://bugs.launchpad.net/nova/+bug/984996 does it the same issue??or i miss some env. Thanks all Edward