目录
先看一下现状
[root@daiwk-dev ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 40G 9.3G 29G 25% /
tmpfs 3.9G 11M 3.9G 1% /dev/shm
看看当前有多少磁盘待挂载
[root@daiwk-dev ~]# fdisk -l
Disk /dev/vda: 42.9 GB, 42949672960 bytes
16 heads, 63 sectors/track, 83220 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xea92f8b1
Device Boot Start End Blocks Id System
/dev/vda1 1 83220 41942848+ 83 Linux
Disk /dev/vdb: 536.9 GB, 536870912000 bytes
16 heads, 63 sectors/track, 1040253 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/vdc: 536.9 GB, 536870912000 bytes
16 heads, 63 sectors/track, 1040253 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/vdd: 536.9 GB, 536870912000 bytes
16 heads, 63 sectors/track, 1040253 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
格式化掉，要等一段时间
[root@daiwk-dev ~]# mkfs.ext4 /dev/vdb
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
65536000 inodes, 131072000 blocks
6553600 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
4000 block groups
32768 blocks per group, 32768 fragments per group
16384 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
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information:
done
This filesystem will be automatically checked every 35 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
挂载到/home/work下：
[root@daiwk-dev ~]# mount -t ext4 /dev/vdb /home/
[root@daiwk-dev ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 40G 14G 25G 35% /
tmpfs 3.9G 11M 3.9G 1% /dev/shm
/dev/vdb 485G 70M 460G 1% /home
编辑配置文件使云盘开机自动挂载 （注意，文件格式错误会导致机器重启失败。）
vim /etc/fstab
加入一行
/dev/vdc /home auto defaults,nofail,comment=cloudconfig 0 2
同样地，可以挂一下vdc，但不要也挂到/home/work下，可以挂到/home/disk1下
如果不慎将/dev/vdc 挂载到了 /home/，导致原来数据被隐藏，可以用root用户
vim /etc/mtab
将最底下的一行
/dev/vdc /home ext4 rw 0 0
删除，然后
mkdir -p /home/disk1
mount -t ext4 /dev/vdc /home/disk1
这样原来的数据就可以找回来，并且将新盘挂载到了/home/disk1目录
另外，可以通过df -Th把Type打出来
[root@daiwk-dev ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/vda1 ext4 40G 14G 25G 35% /
tmpfs tmpfs 3.9G 11M 3.9G 1% /dev/shm
/dev/vdb ext4 485G 1.7G 458G 1% /home
/dev/vdc ext4 485G 70M 460G 1% /home/disk1