KVM备份策略快照克隆导出

清疚 2023-01-22 02:47 12阅读 0赞

## 快照 ##

1.  创建快照

virsh snapshot-create-as 虚拟机名字  快照名字

1.  查看快照

virsh snapshot-list  虚拟机名字
     Name                 Creation Time             State
    ------------------------------------------------------------
    kuaizhao 		   2021-05-17 10:58:00 +0800 	shutoff

1.  恢复快照

virsh snapshot-revert 虚拟机名字 kuaizhao

1.  删除快照

virsh snapshot-delete  虚拟机名字  kuaizhao

## 克隆 ##

1.  克隆

查看要克隆的虚拟机磁盘位置
    #virsh domblklist jimV-C 
    Target     Source
    ------------------------------------------------
    vda        /var/lib/libvirt/images/jimV-C.qcow2
    hda        -
    
    克隆
    # virt-clone -o jimV-C -n centos-1 -f /var/lib/libvirt/images/centos-1.qcow2
    Allocating 'centos-1.qcow2'                    |  50 GB  00:00:02     
    
    -o   ：指定虚拟机
    -n   ：新虚拟机名字
    -f   ：新虚拟机磁盘地址

1.  查看  
    配置文件和磁盘文件

ls /etc/libvirt/qemu
     jimV-C.xml        centos-1.xml

ls /var/lib/libvirt/images
     jimV-C.qcow2     centos-1.qcow2

## 导出 ##

1.  导出操作

导出配置文件
    ll /etc/libvirt/qemu
    centos.xml
    
    virsh dumpxml centos > /etc/libvirt/qemu/centos-1.xml
    ll /etc/libvirt/qemu
    centos.xml   centos-1.xml
    
    复制磁盘文件 
    cd /var/lib/libvirt/images
    cp centos.qcow2 centos-1.qcow2

1.  修改导出文件 ，以防冲突

vim /etc/libvirt/qemu/cnetos-1.xml

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2MTI5NDEz_size_16_color_FFFFFF_t_70]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2MTI5NDEz_size_16_color_FFFFFF_t_70 1]

1.  指定域，用来生效配置

virsh define /etc/libvirt/qemu/centos-1.xml

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2MTI5NDEz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210517154244913.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2MTI5NDEz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2MTI5NDEz_size_16_color_FFFFFF_t_70 1]: /images/20221020/b5460903ad4a4857bd529b3cbd4e5e06.png