1.查看分区表
[root@server8 ~]# cat /proc/partitions
major minor #blocks name
252 0 8388608 vda
252 1 512000 vda1
252 2 7875584 vda2
252 16 5242880 vdb
252 17 204800 vdb1
253 0 6856704 dm-0
253 1 1015808 dm-1
253 2 202752 dm-2
查看vdb
[root@server8 ~]# fdisk -cul /dev/vdb
Disk /dev/vdb: 5368 MB, 5368709120 bytes
7 heads, 6 sectors/track, 249660 cylinders, total 10485760 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x748cfa01
Device Boot Start End Blocks Id System
/dev/vdb1 2048 411647 204800 83 Linux
[root@server8 ~]# fdisk -cu /dev/vdb
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First sector (411648-10485759, default 411648):
Using default value 411648
Last sector, +sectors or +size{K,M,G} (411648-10485759, default 10485759): +200M
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
[root@server8 ~]# init 6
252 18 204800 vdb2
mkdir /test
[root@server8 ~]# vi /etc/fstab
/dev/vdb2 /test ext4 defaults 0 0
本文转自 369蓝宝 51CTO博客,原文链接:http://blog.51cto.com/3739387/1128409,如需转载请自行联系原作者