linux系统的虚拟机快照
[[email protected] images]# ls #查看想要快照的母盘
hahaha.qcow2 rh124-desktop.xml test.qcow2
kaixin.qcow2 rh124-server-vda.ovl westos-1.qcow2
node1.qcow2 rh124-server-vda.qcow2 westos-2.qcow2
rh124-desktop-vda.ovl rh124-server-vdb.ovl westos2.qcow2
rh124-desktop-vda.qcow2 rh124-server-vdb.qcow2 westos.qcow2
rh124-desktop-vdb.ovl rh124-server.xml
rh124-desktop-vdb.qcow2 rhel7.0.qcow2
[[email protected] images]# rm -fr node1.qcow2
[[email protected] images]# qemu-img create -f qcow2 -b kaixin.qcow2 node1.qcow2
# -f是创建，-b是备份， kaixin.qcow2是母盘名称，node1.qcow2是快照名称
Formatting 'node1.qcow2', fmt=qcow2 size=9663676416 backing_file='kaixin.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
[[email protected] images]# virt-manager #把快照导入虚拟机，双击带灯泡的电脑符号，选择import...
html #超文本标记语言，标准通用标记语言下的一个应用。
“超文本”就是指页面内可以包含图片、链接，甚至音乐、程序等非文字元素
xml可扩展标记语言（做数据封装）
virsh list -all #显示
virsh start desktop #表示可以开启一个
virt-viewr desktop #显示虚拟机
virsh shoutdown desktop #正常关闭虚拟机
virsh destroy desktop #强制关闭虚拟机
virsh create desktop #一次性打开，关闭后不存在
virsh define desktop #永久建立
virsh undifine desktop #删除虚拟机
[[email protected] images]# cd /var/lib/libvirt/images/
[[email protected] images]# ls
rh124-desktop-vda.ovl rh124-server-vda.qcow2 westos-1.qcow2
rh124-desktop-vda.qcow2 rh124-server-vdb.ovl westos-2.qcow2
rh124-desktop-vdb.ovl rh124-server-vdb.qcow2 westos2.qcow2
rh124-desktop-vdb.qcow2 rh124-server.xml westos.qcow2
rh124-desktop.xml rhel7.0.qcow2 wwy.qcow2
rh124-server-vda.ovl test.qcow2
[[email protected] images]# mv wwy.qcow2 /mnt/
[[email protected] images]# cd /etc/libvirt/qemu/
[[email protected] qemu]# ls
desktop.xml ls networks server.xml wwy.xml
[[email protected] qemu]# mv wwy.xml /mnt/
[[email protected] qemu]# cd /mnt/
[[email protected] mnt]# ls
hahaha.qcow2 kaixin.qcow2 wwy.qcow2
hahaha.xml vm_create.sh wwy.xml
[[email protected] mnt]# mv wwy.qcow2 /var/lib/libvirt/images
[[email protected] mnt]# ls
hahaha.qcow2 hahaha.xml kaixin.qcow2 vm_create.sh wwy.xml
[[email protected] mnt]# virsh create wwy.xml #只能打开一次
Domain wwy created from wwy.xml
[[email protected] mnt]# virsh define wwy.xml #永久打开
Domain wwy defined from wwy.xml
[[email protected] mnt]# virsh undefine wwy #永久关闭
Domain wwy has been undefined