查看当前磁盘情况

  1. [root@localhost subadmin]# df -hl
  2. Filesystem      Size  Used Avail Use% Mounted on
  3. devtmpfs        7.8G     0  7.8G   0% /dev
  4. tmpfs           7.8G     0  7.8G   0% /dev/shm
  5. tmpfs           7.8G  8.6M  7.8G   1% /run
  6. tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup
  7. /dev/sda2        50G  2.1G   48G   5% /
  8. /dev/sda5        41G  325M   41G   1% /home
  9. /dev/sda1       976M  254M  655M  28% /boot
  10. tmpfs           1.6G     0  1.6G   0% /run/user/1000

查看磁盘列表

  1. [root@localhost subadmin]# fdisk -l
  2. Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
  3. Units: sectors of 1 * 512 = 512 bytes
  4. Sector size (logical/physical): 512 bytes / 512 bytes
  5. I/O size (minimum/optimal): 512 bytes / 512 bytes
  6. Disklabel type: dos
  7. Disk identifier: 0x1a9c6fd2
  9. Device     Boot     Start       End   Sectors Size Id Type
  10. /dev/sda1  *         2048   2099199   2097152   1G 83 Linux
  11. /dev/sda2         2099200 106956799 104857600  50G 83 Linux
  12. /dev/sda3       106956800 123734015  16777216   8G 82 Linux swap / Solaris
  13. /dev/sda4       123734016 209715199  85981184  41G  5 Extended
  14. /dev/sda5       123736064 209715199  85979136  41G 83 Linux
  17. Disk /dev/sdb: 500 GiB, 536870912000 bytes, 1048576000 sectors
  18. Units: sectors of 1 * 512 = 512 bytes
  19. Sector size (logical/physical): 512 bytes / 512 bytes
  20. I/O size (minimum/optimal): 512 bytes / 512 bytes

/dev/sdb磁盘为新的磁盘

新建分区

使用 fdisk /dev/sdb 新建分区(只新建一个主分区)
m 帮助，n 新建分区，p 主分区，w 保存并退出

  1. [root@localhost subadmin]# fdisk /dev/sdb
  3. Welcome to fdisk (util-linux 2.32.1).
  4. Changes will remain in memory only, until you decide to write them.
  5. Be careful before using the write command.
  7. Device does not contain a recognized partition table.
  8. Created a new DOS disklabel with disk identifier 0x270203bd.
  10. Command (m for help): m
  11. ...
  12. Command (m for help): n
  13. Partition type
  14.    p   primary (0 primary, 0 extended, 4 free)
  15.    e   extended (container for logical partitions)
  16. Select (default p):
  17. ...
  18. Command (m for help): w
  19. The partition table has been altered.
  20. Calling ioctl() to re-read partition table.
  21. Syncing disks.
  22. ....

格式化分区

  1. [root@localhost subadmin]# mkfs.ext4 /dev/sdb1
  2. mke2fs 1.45.6 (20-Mar-2020)
  3. Creating filesystem with 131071744 4k blocks and 32768000 inodes
  4. Filesystem UUID: 9182e309-b6b4-4226-bbf9-92c72cb76dc4
  5. Superblock backups stored on blocks:
  6.         32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
  7.         4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
  8.         102400000
  10. Allocating group tables: done
  11. Writing inode tables: done
  12. Creating journal (262144 blocks):
  13. done
  14. Writing superblocks and filesystem accounting information: done

挂载分区

挂载到/u01目录下，先新建目录，再挂载

  1. [root@localhost subadmin]# mkdir /u01
  2. [root@localhost subadmin]# mount /dev/sdb1 /u01/
  3. [root@localhost subadmin]# df -hl
  4. Filesystem      Size  Used Avail Use% Mounted on
  5. devtmpfs        7.8G     0  7.8G   0% /dev
  6. tmpfs           7.8G     0  7.8G   0% /dev/shm
  7. tmpfs           7.8G  8.6M  7.8G   1% /run
  8. tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup
  9. /dev/sda2        50G  2.1G   48G   5% /
  10. /dev/sda5        41G  325M   41G   1% /home
  11. /dev/sda1       976M  254M  655M  28% /boot
  12. tmpfs           1.6G     0  1.6G   0% /run/user/1000
  13. /dev/sdb1       492G   73M  467G   1% /u01

至此，挂载成功。