centos磁盤掛載

centos磁盤掛載

1. 查看全部分區表

[root@iZj6chx50rbasf1de8n2flZ /]# fdisk -l

Disk /dev/vda: 64.4 GB, 64424509440 bytes, 125829120 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: 0x000b1b45

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048   125827071    62912512   83  Linux

Disk /dev/vdb: 536.9 GB, 536870912000 bytes, 1048576000 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
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2. 格式化分區

[root@iZj6chx50rbasf1de8n2flZ data]# mkfs.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
32768000 inodes, 131072000 blocks
6553600 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2279604224
4000 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

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done  
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3. 掛載分區

[root@iZj6chx50rbasf1de8n2flZ /]# df -h // 當前只有/dev/vad1/ 掛載在根目錄下
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        59G  2.9G   54G   6% /
devtmpfs        3.9G     0  3.9G   0% /dev
tmpfs           3.9G     0  3.9G   0% /dev/shm
tmpfs           3.9G  472K  3.9G   1% /run
tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
tmpfs           783M     0  783M   0% /run/user/0
[root@iZj6chx50rbasf1de8n2flZ /]# mkdir data // 建立須要被掛載的目錄
[root@iZj6chx50rbasf1de8n2flZ /]# mount /dev/vdb /data //掛載 /dev/vdb 至 /data 目錄
[root@iZj6chx50rbasf1de8n2flZ /]# df -h // 能夠看到 /dev/vdb 已掛載至 /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        59G  2.9G   54G   6% /
devtmpfs        3.9G     0  3.9G   0% /dev
tmpfs           3.9G     0  3.9G   0% /dev/shm
tmpfs           3.9G  472K  3.9G   1% /run
tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
tmpfs           783M     0  783M   0% /run/user/0
/dev/vdb        493G   73M  467G   1% /data

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4. 開機自動掛載

編輯 /etc/fstab 在末尾添加 /dev/vdb (磁盤分區) /data (掛載目錄) ext4 (文件格式) defaults 1 2

[root@iZj6chx50rbasf1de8n2flZ /]# vi /etc/fstab 

# /etc/fstab
# Created by anaconda on Fri Feb 15 09:22:39 2019
#
# 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=ed95c595-4813-480e-992b-85b1347842e8 /                       ext4    defaults        1 1
/dev/vdb                                  /data                   ext4    defaults        1 2
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