linux添加磁盘

https://www.linuxidc.com/Linux/2018-06/152958.htm

通过虚拟机先创建磁盘

root@ubuntu:/mnt# fdisk /dev/sdb

Welcome to fdisk (util-linux 2.27.1).

Changes will remain in memory only, until you decide to write them.

Be careful before using the write command.

Device does not contain a recognized partition table.

Created a new DOS disklabel with disk identifier 0x05b679ac.

Command (m for help): m

Help:

  DOS (MBR)

  a  toggle a bootable flag

  b  edit nested BSD disklabel

  c  toggle the dos compatibility flag

  Generic

  d  delete a partition

  F  list free unpartitioned space

  l  list known partition types

  n  add a new partition

  p  print the partition table

  t  change a partition type

  v  verify the partition table

  i  print information about a partition

  Misc

  m  print this menu

  u  change display/entry units

  x  extra functionality (experts only)

  Script

  I  load disk layout from sfdisk script file

  O  dump disk layout to sfdisk script file

  Save & Exit

  w  write table to disk and exit

  q  quit without saving changes

  Create a new label

  g  create a new empty GPT partition table

  G  create a new empty SGI (IRIX) partition table

  o  create a new empty DOS partition table

  s  create a new empty Sun partition table

Command (m for help): n

Partition type

  p  primary (0 primary, 0 extended, 4 free)

  e  extended (container for logical partitions)

Select (default p): p

Partition number (1-4, default 1): 1

First sector (2048-41943039, default 2048):

Last sector, +sectors or +size{K,M,G,T,P} (2048-41943039, default 41943039):

Created a new partition 1 of type 'Linux' and of size 20 GiB.

Command (m for help): w

The partition table has been altered.

Calling ioctl() to re-read partition table.

Syncing disks.

root@ubuntu:/mnt# partprobe /dev/sdb

root@ubuntu:/mnt# mkfs.ext4 /dev/sdb1

mke2fs 1.42.13 (17-May-2015)

Creating filesystem with 5242624 4k blocks and 1310720 inodes

Filesystem UUID: c72153a3-903e-4449-be71-26f866c06363

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000

Allocating group tables: done                           

Writing inode tables: done                           

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done 

root@ubuntu:/mnt# mount /dev/sdb1 /mnt/sdb/

设置开机自动挂载

vim /etc/fstab 

/dev/sdb1 /mnt/sdb ext4 defaults 0 0

root@ubuntu:/mnt# mount -a    检查是否设置成功