linux 磁盘扩容

[root@iZ9488z4qfcZ www]# umount /alidata
umount: /alidata: device is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))
[root@iZ9488z4qfcZ www]# fuser -m /alidata/
/alidata/:            2296c
[root@iZ9488z4qfcZ www]# kill 2296
[root@iZ9488z4qfcZ www]# umount /alidata
umount: /alidata: device is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))
[root@iZ9488z4qfcZ www]# fuser -m /alidata
/alidata:             2296c
[root@iZ9488z4qfcZ www]# ps aux |grep 2296
root      2296  0.0  0.0 108456  1900 pts/0    S    22:54   0:00 bash
root      2547  0.0  0.0 103172   828 pts/0    S+   23:06   0:00 grep 2296
[root@iZ9488z4qfcZ www]# kill -9 2296
Killed (core dumped)
[root@iZ9488z4qfcZ ~]# fdisk /dev/svdb1

Unable to open /dev/svdb1
[root@iZ9488z4qfcZ ~]# df
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/xvda1      20641404  3201844  16391036  17% /
tmpfs            1960556        0   1960556   0% /dev/shm
/dev/xvdb1      20635700 15126612   4460852  78% /alidata
[root@iZ9488z4qfcZ ~]# umount /dev/xvdb1
[root@iZ9488z4qfcZ ~]# df
Filesystem     1K-blocks    Used Available Use% Mounted on
/dev/xvda1      20641404 3201844  16391036  17% /
tmpfs            1960556       0   1960556   0% /dev/shm
[root@iZ9488z4qfcZ ~]# fdisk -l

Disk /dev/xvda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 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: 0x00078f9c

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *           1        2611    20970496   83  Linux

Disk /dev/xvdb: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 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: 0x5710df54

    Device Boot      Start         End      Blocks   Id  System
/dev/xvdb1               1        2610    20964793+  83  Linux
[root@iZ9488z4qfcZ ~]# fdisk /dev/xvdb

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): d
Selected partition 1

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-13054, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-13054, default 13054):
Using default value 13054

Command (m for help): wq
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@iZ9488z4qfcZ ~]# df
Filesystem     1K-blocks    Used Available Use% Mounted on
/dev/xvda1      20641404 3201844  16391036  17% /

tmpfs            1960556       0   1960556   0% /dev/shm

[root@iZ9488z4qfcZ ~]# fdisk -l

Disk /dev/xvda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 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: 0x00078f9c

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *           1        2611    20970496   83  Linux

Disk /dev/xvdb: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 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: 0x5710df54

    Device Boot      Start         End      Blocks   Id  System
/dev/xvdb1               1       13054   104856223+  83  Linux
[root@iZ9488z4qfcZ ~]# e2fsck -f /dev/xvdb1
e2fsck 1.41.12 (17-May-2010)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/xvdb1: 207395/1310720 files (0.4% non-contiguous), 3863926/5241198 blocks
[root@iZ9488z4qfcZ ~]# resize2fs /dev/xvdb1
resize2fs 1.41.12 (17-May-2010)
Resizing the filesystem on /dev/xvdb1 to 26214055 (4k) blocks.
The filesystem on /dev/xvdb1 is now 26214055 blocks long.

[root@iZ9488z4qfcZ ~]# mount /dev/xvdb1 /alidata
[root@iZ9488z4qfcZ ~]# df
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/xvda1      20641404  3201844  16391036  17% /
tmpfs            1960556        0   1960556   0% /dev/shm
/dev/xvdb1     103210940 15142664  82825484  16% /alidata
[root@iZ9488z4qfcZ ~]# cd /alidata/

[root@iZ9488z4qfcZ vmfx]# df -H
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1       22G  3.3G   17G  17% /
tmpfs           2.1G     0  2.1G   0% /dev/shm
/dev/xvdb1      106G   16G   85G  16% /alidata
[root@iZ9488z4qfcZ vmfx]# reboot