centos 6.4 fdisk分区、格式化、挂载新硬盘

1、# fdisk -l
查看当前磁盘信息,就会发现最下面显示新加入的硬盘不是有效分区,如下:

1

2

3

4

5

6

7

8

[root@localhost /]# fdisk -l

disk /dev/xvdb: 429.5 GB,429496729600 bytes

255 heads,63 sectors/track,52216 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

2、# fdisk /dev/xvdb
对新硬盘分区,并根据提示进一步操作:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

[root@localhost /]# fdisk /dev/xvdb

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

Building a new DOS disklabel with disk identifier 0x7f095069.

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): n 输入n进行分区

Command action

e extended

p primary partition (1-4)

p 输入p为主分区,e为逻辑分区

Partition number (1-4): 1 (由于是新盘我们输入1来分第一个主分区,共可以分4个主分区)

First cylinder (1-52216,default 1): 1 (选择该分区的起始磁盘数,如无特殊需求强烈建议选择认,也就是1来分区(可直接按回车))

Last cylinder or +size or +sizeM or +sizeK (1-52216,default 52216):

定义该分区的大小,如果按认(按回车)即是使用全部可用存储额,如分一个1G的空间,输入+1024m

Using default value 52216

Command (m for help): w 写入分区

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

3、# fdisk -l
可以找到我们刚才分的一个分区,内容如下:

1

2

3

4

5

6

7

8

9

10

11

12

[root@localhost /]#

fdisk -l

disk /dev/xvdb: 429.5 GB,52216 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: 0x90b7ee49

Device Boot Start End Blocks Id System

/dev/xvdb1 1 52216 419424988+ 83 Linux

4、# mkfs -t ext4 -c /dev/xvdb1
对分区使用ext3格式化,-c参数要先检测磁盘坏道
......
5、# mkdir /data2
新建挂载目录
......
6、# mount -t ext4 /dev/xvdb1 /data2
挂载新硬盘
......
7、# df -l
查看分区大小是否和我们预定的一样
......
8、最后也是很容易漏掉的一步

1

[root@localhost /]#
echo "/dev/xvdb1 /data2 ext4 defaults 0 0" >> /etc/fstab

如果忘了将这个写入配置文件的话,服务器如果重启,硬盘将不会自动挂载,将找不到挂载的文件夹。这时候要再一直mount 挂载一遍。。。

相关文章

Centos下搭建性能监控Spotlight
CentOS 6.3下Strongswan搭建IPSec VPN
在CentOS6.5上安装Skype与QQ
阿里云基于centos6.5主机VPN配置
CentOS 6.3下配置multipah
CentOS安装、配置APR和tomcat-native