请大家帮帮忙openstack做块迁移报错不能远程libvirt URI

/var/log/libvirt/libvirtd/log

2016-04-22 01:04:52.784+0000: 1617: info : libvirt version: 1.2.2

2016-04-22 01:04:52.784+0000: 1617: error : virNetSocketNewConnectTCP:455 : Unable to resolve address 'guo2-Lenovo' service '16509': Name or service not known

2016-04-22 01:04:52.816+0000: 1617: error : doPeer2PeerMigrate:4052 : operation failed: Failed to connect to remote libvirt URI qemu+tcp://guo2-Lenovo/system: Unable to resolve address 'guo2-Lenovo' service '16509': Name or service not known