CentOS新添加一块硬盘并设置自动挂载到某个盘中（转载+自己修改）

[root@appserver ~]# df -h /*查看现有分区情况*/

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_admin-lv_root 18G 2.0G 16G 12% /

tmpfs 495M 228K 495M 1% /dev/shm

/dev/sda1 485M 35M 425M 8% /boot

[root@appserver ~]# fdisk -l /*查看现有DISK*/

Disk /dev/sda: 21.5 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0007b51c

   Device Boot Start End Blocks Id System

/dev/sda1 * 1 64 512000 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 64 2611 20458496 8e Linux LVM

Disk /dev/mapper/vg_admin-lv_root: 18.9 GB, 18865979392 bytes

255 heads, 63 sectors/track, 2293 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/mapper/vg_admin-lv_swap: 2080 MB, 2080374784 bytes

255 heads, 63 sectors/track, 252 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

　　[root@appserver ~]# fdisk /dev/sdb /*打开fdisk分区工具对磁盘分区，如果默认一个分区，也可以跨过此步奏*/

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel with disk identifier 0x264c68f0.

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

After that, of course, the previous content won't be recoverable.

　　Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

　　WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

switch off the mode (command 'c') and change display units to

sectors (command 'u').

　　Command (m for help): m

Command action

a toggle a bootable flag

b edit bsd disklabel

c toggle the dos compatibility flag

d delete a partition

l list known partition types

m print this menu

n add a new partition

o create a new empty DOS partition table

p print the partition table

q quit without saving changes

s create a new empty Sun disklabel

t change a partition's system id

u change display/entry units

v verify the partition table

w write table to disk and exit

x extra functionality (experts only)

　　Command (m for help): n

Command action

e extended

p primary partition (1-4)

e

Partition number (1-4): 1

First cylinder (1-416101, default 1): 

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-416101, default 416101): 

Using default value 416101

　　Command (m for help): w

The partition table has been altered!

　　Calling ioctl() to re-read partition table.

Syncing disks.

[root@appserver ~]# fdisk -l

Disk /dev/sda: 21.5 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0007b51c

   Device Boot Start End Blocks Id System

/dev/sda1 * 1 64 512000 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 64 2611 20458496 8e Linux LVM

Disk /dev/sdb: 21.5 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x26128f57

   Device Boot Start End Blocks Id System

Disk /dev/mapper/vg_admin-lv_root: 18.9 GB, 18865979392 bytes

255 heads, 63 sectors/track, 2293 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/mapper/vg_admin-lv_swap: 2080 MB, 2080374784 bytes

255 heads, 63 sectors/track, 252 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

[root@appserver ~]# mkfs -t ext4 -c /dev/sdb /*格式化磁盘分区*/

mke2fs 1.41.12 (17-May-2010)

/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

1310720 inodes, 5242880 blocks

262144 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

160 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

Checking for bad blocks (read-only test): done

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 34 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

[root@appserver ~]# df -h
文件系统 容量 已用 可用 已用%% 挂载点

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_admin-lv_root 18G 2.0G 16G 12% /

tmpfs 495M 224K 495M 1% /dev/shm

/dev/sda1 485M 35M 425M 8% /boot

[root@appserver ~]#  mount /dev/sdb /home/admin/storage20/    /*挂载/dev/sdb 到/home/admin/storage20/*/
[root@appserver ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_admin-lv_root 18G 2.0G 16G 12% /

tmpfs 495M 224K 495M 1% /dev/shm

/dev/sda1 485M 35M 425M 8% /boot

/dev/sdb 20G 172M 19G 1% /home/admin/storage20

[root@appserver ~]# vi /etc/fstab

# /etc/fstab

# Created by anaconda on Wed Mar 14 09:30:48 2012

#

# 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=a779e5e4-e34a-4a96-b01a-dbc5cc348958 / ext4 defaults 1 1

tmpfs /dev/shm tmpfs defaults 0 0

devpts /dev/pts devpts gid=5,mode=620 0 0

sysfs /sys sysfs defaults 0 0

proc /proc proc defaults 0 0

/dev/sdb /home/admin/storage20 ext4 defaults 0 0 /

*重启后/dev/vdb自动挂载到/mnt目录*/