简单记录磁盘挂载命令
umount /dev/xvdb1
mkfs.ext4 /dev/sdb1
fuser -km /dev/sdb1
umount /dev/sdb1
命令使用效果如下：
[root@www ~]# umount /dev/sdb1
[root@www ~]# mkfs.ext4 /dev/sdb1
mke2fs 1.42.9 (28-Dec-2013)
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
15073280 inodes, 60292864 blocks
3014643 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2208301056
1840 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, 20480000, 23887872
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[root@www ~]#
