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  • KVM虚拟机添加硬盘

    新增硬盘(关闭虚拟机)
    1. 宿主机添加一块硬盘
    [root@mrxy-py kvmdisk]# qemu-img create -f raw /data1/kvmdisk/WMS-test-2-2.img 50G 
    Formatting '/data1/kvmdisk/WMS-test-2-2.img', fmt=raw size=53687091200
    1. 添加新磁盘信息加入配置文件
    #关闭电源
    [root@mrxy-py kvmdisk]# virsh destroy WMS-test-2
    Domain WMS-test-2 destroyed
    #配置文件添加信息
    [root@mrxy-py kvmdisk]# virsh edit WMS-test-2
    <disk type='file' device='disk'>     
      <driver name='qemu' type='raw' cache='none'/>      
      <source file='/data1/kvmdisk/WMS-test-2-2.img'/>      
      <target dev='vdb' bus='ide'/>    
     </disk>

    3.启动虚拟机并配置硬盘

    [root@mrxy-py kvmdisk]# virsh start WMS-test-2
    Domain WMS-test-2 started
    fdisk /dev/sdb
    mkfs.ext4 /dev/sdb
    mount /dev/vdb /data
    vi /etc/fstab
    得到到/dev/sdb这个分区的UUID使用命令:blkid /dev/sdb
    Cat << EOF >> /etc/fstab
    UUID="f7dbec85-ec1e-4291-bf91-73587dc81855"/data ext4 defaults 0 0
    EOF
    扩容硬盘
    #查看硬盘信息
    [root@mrxy-py kvmdisk]# qemu-img info /data1/kvmdisk/WMS-test-3.img
    image: /data1/kvmdisk/WMS-test-3.img
    file format: raw
    virtual size: 50G (53695545344 bytes)
    disk size: 50G
    #增加硬盘信息
    [root@mrxy-py kvmdisk]# qemu-img resize /data1/kvmdisk/WMS-test-3.img +50G
    Image resized.
    #查看增加后硬盘信息
    [root@mrxy-py kvmdisk]# qemu-img info /data1/kvmdisk/WMS-test-3.img 
    image: /data1/kvmdisk/WMS-test-3.img
    file format: raw
    virtual size: 100G (107382636544 bytes)
    disk size: 50G
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  • 原文地址:https://www.cnblogs.com/patrick0715/p/7743463.html
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