CentOS7 自动挂载磁盘

1、查看磁盘信息(/dev/sdb为新增磁盘容量10G)

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# fdisk -l
Disk /dev/sda: 32.2 GB, 32212254720 bytes, 62914560 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: 0x000a44f5
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 62914559 30407680 8e Linux LVM
Disk /dev/sdb: 10.7 GB, 10737418240 bytes, 20971520 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 /dev/mapper/centos-root: 29.0 GB, 28982640640 bytes, 56606720 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 /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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

2、格式化新增磁盘(/dev/sdb)

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# mkfs.ext4 /dev/sdb
mke2fs 1.42.9 (28-Dec-2013)
/dev/sdb is entire device, not just one partition!
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
655360 inodes, 2621440 blocks
131072 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2151677952
80 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
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information:
done

3、创建磁盘挂载目录并手动挂载

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# mkdir /data
# mount /dev/sdb /data
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 27G 2.5G 25G 10% /
devtmpfs 990M 0 990M 0% /dev
tmpfs 1001M 0 1001M 0% /dev/shm
tmpfs 1001M 8.6M 992M 1% /run
tmpfs 1001M 0 1001M 0% /sys/fs/cgroup
/dev/sda1 1014M 125M 890M 13% /boot
tmpfs 201M 0 201M 0% /run/user/0
/dev/sdb 9.8G 37M 9.2G 1% /data

4、设置开机自动挂载,查看磁盘UUID信息

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# blkid
/dev/sda1: UUID="18931213-eba9-473f-97e8-40dfce8a5b13" TYPE="xfs"
/dev/sda2: UUID="gOZr1z-paNd-sA8t-H1zM-3mB7-SgWw-s2mAY2" TYPE="LVM2_member"
/dev/sr0: UUID="2017-09-06-10-51-00-00" LABEL="CentOS 7 x86_64" TYPE="iso9660" PTTYPE="dos"
/dev/sdb: UUID="f495dd82-2924-4af4-9262-d4a71f1156e3" TYPE="ext4"
/dev/mapper/centos-root: UUID="923f04fc-3873-4b15-bbd8-9432ba3d7ea5" TYPE="xfs"
/dev/mapper/centos-swap: UUID="5de5f520-90b4-4016-8f32-b90d784b2ad2" TYPE="swap"

5、增加自动挂载磁盘信息, 修改(vim /etc/fstab)配置文件:

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添加以下信息
UUID=f495dd82-2924-4af4-9262-d4a71f1156e3 /data ext4 defaults 0 0

6、执行下面命令测试是否可以挂载成功

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mount -a

7、重启服务器测试

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# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 27G 2.5G 25G 10% /
devtmpfs 990M 0 990M 0% /dev
tmpfs 1001M 0 1001M 0% /dev/shm
tmpfs 1001M 8.6M 992M 1% /run
tmpfs 1001M 0 1001M 0% /sys/fs/cgroup
/dev/sdb 9.8G 37M 9.2G 1% /data
/dev/sda1 1014M 125M 890M 13% /boot
tmpfs 201M 0 201M 0% /run/user/0

 

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