kvm初体验之六：克隆目标：克隆vm1到vm1-clone
1. virsh suspend vm1
2. virt-clone --connect qemu:///system --original vm1 --name vm1-clone --file /vm/vm1-clone
或 virt-clone --connect qemu:///system -o vm1 -n vm1-clone -f /vm/vm1-clone
3. virsh start vm1-clone
登录vm1-clone, ifconfig发现eth0没起来, service network restart提示：
[root@localhost rules.d]# service network restart
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Device eth0 does not seem to be PResent, delaying initialization.
[FAILED]
解决方法：
http://www.unixmen.com/fix-device-eth0-seem-present-delaying-initialization-error/
1）删除文件/etc/udev/rules.d/70-persistent-net.rules；
2）编辑/etc/sysconfig/network-scripts/ifcfg-eth0，删除行HWADDR和UUID；
3）重启。
