[root@ok qemu]# virsh list
Id Name State
----------------------------------------------------
2 tiny running
4 win7 running
[root@ok qemu]# virsh list --all
Id Name State
----------------------------------------------------
2 tiny running
4 win7 running
- centos01 shut off
- centos02 shut off
- centos03 shut off
- centos04 shut off
- centos05 shut off
- centos06 shut off
- centos07 shut off
- centos08 shut off
- centos09 shut off
- win2003 shut off
[root@ok qemu]# ls
centos01.xml centos04.xml centos07.xml networks tiny.xml
centos02.xml centos05.xml centos08.xml nginx.xml win2003.xml
centos03.xml centos06.xml centos09.xml ng.xml win7.xml
[root@ok qemu]# pwd
/etc/libvirt/qemu
[root@ok qemu]# virsh dumpxml centos01 >ng.xml
[root@ok qemu]# vi ng.xml
[root@ok qemu]# grep ng ng.xml
<name>ng</name>
[root@ok qemu]# grep source ng.xml
<source file='/home/virhost/ng.img'/>
<source bridge='br0'/>
[root@ok qemu]# mv /home/virhost/centos01.img /home/virhost/ng.img
[root@ok qemu]# virsh undefine centos01
Domain centos01 has been undefined
[root@ok qemu]# virsh define ng.xml（注意目录/etc/libvirt/qemu）
Domain ng defined from ng.xml
[root@ok qemu]# virsh start ng
Domain ng started
[root@ok qemu]# virsh list
Id Name State
----------------------------------------------------
2 tiny running
4 win7 paused
13 ng running