linux 调整分区大小

suselinux:~ # fdisk -l
Disk /dev/sda: 85.8 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1        2350    18876343+  83  Linux
/dev/sda2   *        2351        2546     1574370   83  Linux
/dev/sda3            2547        2610      514080   82  Linux swap / Solaris
Disk /dev/sdb: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1        2610    20964793+  83  Linux
suselinux:~ # fdisk  /dev/sda
The number of cylinders for this disk is set to 10443.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Selected partition 4
First cylinder (2611-10443, default 2611):
Using default value 2611
Last cylinder or +size or +sizeM or +sizeK (2611-10443, default 10443):
Using default value 10443
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.
Syncing disks.
suselinux:~ # mkfs.ext3 /dev/sda4
mke2fs 1.38 (30-Jun-2005)
Could not stat /dev/sda4 --- No such file or directory
The device apparently does not exist; did you specify it correctly?
suselinux:~ # df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              18G  4.7G   13G  28% /
udev                  211M  104K  211M   1% /dev
/dev/sda2             1.5G   39M  1.4G   3% /boot
/dev/sdb1              20G  129M   19G   1% /data
suselinux:~ # partprobe
suselinux:~ # mkfs.ext3 /dev/sda4
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
7865312 inodes, 15729643 blocks
786482 blocks (5.00%) reserved for the super user
First data block=0
481 block groups
32768 blocks per group, 32768 fragments per group
16352 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 25 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
suselinux:~ # mount /dev/sda4 /
suselinux:~ # df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              18G  4.7G   13G  28% /
udev                  211M  108K  211M   1% /dev
/dev/sda2             1.5G   39M  1.4G   3% /boot
/dev/sdb1              20G  129M   19G   1% /data
suselinux:~ #

http://hardy136.blog.163.com/blog/static/1378810922010101385735942/

http://blog.csdn.net/microad_liy/article/details/7667670

http://down.tech.sina.com.cn/page/37459.html