KVM虚拟机静态迁移

[root@sun ~]# virsh list --all
 Id    Name                           State
----------------------------------------------------
 2     mercury                        running
 3     venus                          running
 4     aptcacher                      running
 -     pluto                          shut off

[root@sun ~]# virsh domblklist pluto
Target     Source
------------------------------------------------
hda        /var/lib/libvirt/images/pluto.qcow2
hdb        -

2、备份导出虚机配置文件：virsh dumpxml vhostname > vhostname.xml

[root@sun ~]# virsh dumpxml pluto > pluto.xml
[root@sun ~]# ll | grep pluto
-rw-r--r--  1 root root   3393 Oct 30 21:22 pluto.xml

3、将备份导出的虚机配置文件和虚机磁盘镜像拷贝至目标服务器相关位置

[root@sun ~]# scp pluto.xml root@172.16.2.100:/etc/libvirt/qemu/
The authenticity of host '172.16.2.100 (172.16.2.100)' can't be established.
ECDSA key fingerprint is e7:cb:b7:7c:26:36:de:61:50:3d:dd:b1:8b:ad:9e:4b.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.16.2.100' (ECDSA) to the list of known hosts.
root@172.16.2.100's password:
pluto.xml                                          100% 3397     3.3KB/s   00:00

[root@sun ~]# scp /var/lib/libvirt/images/pluto.qcow2 root@172.16.2.100:/date/images
root@172.16.2.100's password:
pluto.qcow2                                            100%   23GB 108.7MB/s   03:40

4、在目标服务器上查看相关文件均已被拷贝过来

[root@boron3 ~]# ll /etc/libvirt/qemu
total 16
drwxr-xr-x 2 root root   27 Oct 30 15:06 autostart
-rw------- 1 root root 4643 Oct 30 16:26 centos7.0.xml
drwx------ 3 root root   42 Oct 29 16:35 networks
-rw-r--r-- 1 root root 3393 Oct 31 09:27 pluto.xml
[root@boron3 ~]# ll /date/images/ -h
total 25G
-rw------- 1 qemu qemu 21G Oct 31 09:30 centos7.0.qcow2
-rw-r--r-- 1 root root 24G Oct 31 09:06 pluto.qcow2

5、编辑修改虚机配置文件检查虚机磁盘文件存放位置

[root@boron3 ~]# vim /etc/libvirt/qemu/pluto.xml

6、定义注册虚拟主机：virsh define /etc/libvirt/qemu/pluto.xml

[root@boron3 ~]# virsh define /etc/libvirt/qemu/pluto.xml
Domain pluto defined from /etc/libvirt/qemu/pluto.xml

[root@boron3 ~]# virsh list --all
 Id    Name                           State
----------------------------------------------------
 1     centos7.0                      running
 -     pluto                          shut off

7、开启虚机，检查各方面无误后表示迁移成功：virsh start pluto

[root@boron3 ~]# virsh start pluto
Domain pluto started
[root@boron3 ~]# virsh list
 Id    Name                           State
----------------------------------------------------
 1     pluto                          running
 2     centos7.0                      running