Linux 磁盘分区、格式化、目录挂载

1. 显示当前主机目录

df -h

2.1 显示机器当前的磁盘:

fdisk -l
[root@localhost ~]# fdisk -l /dev/xvdb 

Disk /dev/xvdb: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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

2.2 fdisk 分区 /dev/xvdb:

fdisk /dev/xvdb
[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 0x0adfd119.
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(不需要展开帮助)
Command action
   e   extended
   p   primary partition (1-4)
Partition number (1-4): 1(选择第1个分区)
First cylinder (1-6527, default 1): (直接回车默认全部容量)
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-6527, default 6527): 
Using default value 6527

Command (m for help): w(回到最初的一步,输入 w 保存结束)
The partition table has been altered!

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


mkfs.ext4 /dev/xvdb1
[root@localhost ~]# mkfs.ext4 /dev/xvdb1(使用ext4格式进行格式化)
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
3276800 inodes, 13107024 blocks
655351 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
400 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

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

This filesystem will be automatically checked every 28 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.


  1. 新建目录
mkdir /www
[root@localhost ~]# mount /dev/xvdb1 /www


vi /etc/fstab
/dev/xvdb1              /www                    ext4    defaults        0 0


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