云上添加虚拟机磁盘挂载

墨蓝 2023-03-02 07:34 187阅读 0赞

##### 添加虚拟机磁盘挂载 #####

添加虚拟机磁盘挂载，需要注意虚拟重启后磁盘挂载不丢失；

*  df -h发现没有提供的1T的磁盘  
    ![format_png][]
 *  fdisk -l查看那块磁盘没有挂载  
    ![format_png 1][]  
    说明：以上可以发现是/dev/vdb
 *  磁盘格式化

[root@gt-devops-codeversion-git ~]# mkfs -t ext4 /dev/vdb
    mke2fs 1.42.9 (28-Dec-2013)
    Filesystem label=
    OS type: Linux
    Block size=4096 (log=2)
    Fragment size=4096 (log=2)
    Stride=0 blocks, Stripe width=0 blocks
    65536000 inodes, 262144000 blocks
    13107200 blocks (5.00%) reserved for the super user
    First data block=0
    Maximum filesystem blocks=2409627648
    8000 block groups
    32768 blocks per group, 32768 fragments per group
    8192 inodes per group
    Superblock backups stored on blocks: 
            32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
            4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 
            102400000, 214990848
    Allocating group tables: done                            
    Writing inode tables: done                            
    Creating journal (32768 blocks): done
    Writing superblocks and filesystem accounting information:          
    done
    [root@gt-devops-codeversion-git ~]#

*  挂载磁盘

[root@gt-devops-codeversion-git ~]# df -h
    Filesystem               Size  Used Avail Use% Mounted on
    /dev/mapper/centos-root   84G  1.2G   83G   2% /
    devtmpfs                 3.8G     0  3.8G   0% /dev
    tmpfs                    3.9G     0  3.9G   0% /dev/shm
    tmpfs                    3.9G   18M  3.8G   1% /run
    tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1                509M  139M  371M  28% /boot
    tmpfs                    781M     0  781M   0% /run/user/1000
    /dev/vdb                 985G   77M  935G   1% /data
    [root@gt-devops-codeversion-git ~]#

*  /etc/fstab 下配置挂载信息

[root@gt-devops-codeversion-git ~]# vim /etc/fstab
    /dev/mapper/centos-root /                       xfs     defaults        0 0
    UUID=fc0a68c0-fbe6-4c67-bacc-b10e3758fa40 /boot                   xfs     defaults        0 0
    /dev/mapper/centos-swap swap                    swap    defaults        0 0
    /dev/vdb /data auto  defaults,nofail,comment=cloudconfig     0       2

*  验证  
    sudo mount -a 测试是否挂载成功（如果出错，不要重启，否则就GG了）

[format_png]: /images/20230208/cc3e1d8e8db2461a84094775015d9e09.png
[format_png 1]: /images/20230208/58e35066ba494771be3f4493b50937fc.png