kvm克隆虚拟机

两步：
第一步导出XML：
[root@ok ~]# virsh dumpxml centos02 >12c.xml

第二步磁盘文件
[root@ok virhost]# cp centos02.img 12c.img
看看两个文件的不同：
[root@ok ~]# diff /etc/libvirt/qemu/centos02.xml ~/12c.xml 
1,10c1,3
<
<
<
<centos02
<e6852c4a-c0a8-cbcc-d556-768e93d4167c
---
> 
>   12c
>   e6852c4a-c0a8-cbcc-d556-768e93d4168c
31c24
<
---
>       
32a26
>       
38a33
>       
41a37
>       
44a41
>       
48a46
>       
52a51
>       
56a56
>       
60c60
<
---
>       
61a62,63
>       
>       
64a67
>       
65a69
>       
67c71,72
<
---
>     
>       
68a74
>       
71c77
<
---
>     
75a82
>       
78a86
>       
81a90,93
>   
>     system_u:system_r:svirt_t:s0:c355,c689
>     system_u:object_r:svirt_image_t:s0:c355,c689
>   
82a95
> 

[root@ok ~]# virsh define 12c.xml 
Domain 12c defined from 12c.xml
root@ok ~]# virsh start 12c
Domain 12c started

[root@ok ~]# virsh list
 Id    Name                           State
----------------------------------------------------
 1     win7                           running
 2     centos02                       running
 3     12c                            running

#pwd
#/etc/udev/rules.d
#rm  -f 70-persistent-net.rules
然后重启
[root@ok virhost]# virsh list
 Id    Name                           State
----------------------------------------------------
 1     win7                           running
 2     centos02                       running
 3     12c                            running