查看盘，挂载盘 | 易学教程

df -h 查看磁盘

fdisk -l 会发现 /dev/vdb没格式化信息
Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000a57df

Device Boot Start End Blocks Id System
/dev/vda1 * 2048 83884031 41940992 83 Linux

Disk /dev/vdb: 85.9 GB, 85899345920 bytes, 167772160 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

格式化
[root@testdb mnt]# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.23.2).

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
Building a new DOS disklabel with disk identifier 0x3c783f52.

Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-167772159, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-167772159, default 167772159):
Using default value 167772159
Partition 1 of type Linux and of size 80 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

[root@testdb mnt]# fdisk -l

Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000a57df

Device Boot Start End Blocks Id System
/dev/vda1 * 2048 83884031 41940992 83 Linux

Device Boot Start End Blocks Id System
/dev/vdb1 2048 167772159 83885056 83 Linux
[root@testdb mnt]# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Thu Nov 29 03:34:10 2018
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=b98386f1-e6a8-44e3-9ce1-a50e59d9a170 / ext4 defaults 1 1
[root@testdb mnt]# fdisk -l

Device Boot Start End Blocks Id System
/dev/vda1 * 2048 83884031 41940992 83 Linux

Device Boot Start End Blocks Id System
/dev/vdb1 2048 167772159 83885056 83 Linux
[root@testdb mnt]# mkfs -t ext4 /dev/vdb1
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
5242880 inodes, 20971264 blocks
1048563 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2168455168
640 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

Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

[root@testdb mnt]# mkdir data
[root@testdb mnt]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 40G 2.6G 35G 7% /
devtmpfs 3.7G 0 3.7G 0% /dev
tmpfs 3.7G 0 3.7G 0% /dev/shm
tmpfs 3.7G 624K 3.7G 1% /run
tmpfs 3.7G 0 3.7G 0% /sys/fs/cgroup
tmpfs 756M 0 756M 0% /run/user/0
[root@testdb mnt]# mount /dev/vdb1 /mnt/data/
[root@testdb mnt]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 40G 2.6G 35G 7% /
devtmpfs 3.7G 0 3.7G 0% /dev
tmpfs 3.7G 0 3.7G 0% /dev/shm
tmpfs 3.7G 624K 3.7G 1% /run
tmpfs 3.7G 0 3.7G 0% /sys/fs/cgroup
tmpfs 756M 0 756M 0% /run/user/0
/dev/vdb1 79G 57M 75G 1% /mnt/data

开机自动挂载，vi /etc/fstab 增加

/dev/vdb1 /mnt/data ext4 defaults 0 0

完成

来源：CSDN

作者：lanxingmo

链接：https://blog.csdn.net/lanxingmo/article/details/104570688

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