How to Enlarge Data Partitions without losing data after Raid expansion in Linux

Scenario : Customer needs to expand Data volume after expanding array size in Linux.
Possibilities : only Last Partitions can be expanded through Resize2fs
Recommendation : Please ask customer to take backup of File systems/system.

Step to be followed: 

Suppose you have a Partition called c0d0p7 in last cylinder and mounted as a ext3.
#df -h
Filesystem                  Size   Used     Avail   Use%       Mounted on 

/dev/cciss/c0d0p2       15G       4.5G     9.3G    33%        /
/dev/cciss/c0d0p1       99M      12M     83M     12%       /boot
None                          4.0G      0          4.0G     0%        /dev/shm
/dev/cciss/c0d0p6       46G      85M     44G      1%        /name1
/dev/cciss/c0d0p7       46G      103M   44G      1%        /name2

1) Un mount  that file system/Mount point
2) Now you have to remove Journal feature ( if it is ext3 file system) from the file system
# tune2fs -O ^has_journal /dev/cciss/c0d0p7 # tune2fs 1.35 (Date)
Now you have to run e2fsck command to check file systems.
3) root@ff13manish /]# e2fsck -f -y /dev/cciss/c0d0p7 
e2fsck 1.35 (Date) Pass
Pass 1: Checking inodes, blocks, and sizes Pass
Pass 2: Checking directory structure Pass
Pass 3: Checking directory connectivity Pass
Pass 4: Checking reference counts Pass
Pass 5: Checking group summary information
/Name2: 16/6111232 files (6.3% non-contiguous), 209772/12209392 blocks
4) Execute the fdisk -l command 
Disk /dev/cciss/c0d0: 220.1 GB, 220122071040 bytes
255 heads, 63 sectors/track, 26761 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Devic Boot                         Start       End              Blocks           Id        System
System /dev/cciss/c0d0p1      1            13              104391            83       linux
/dev/cciss/c0d0p2                14           1925           15358140        83       linux
Linux /dev/cciss/c0d0p3       1926       3455           12289725        82      linux swap
/dev/cciss/c0d0p4               3456         26761       187205445      5         Extended
/dev/cciss/c0d0p5               3456         9535         48837568+      83       Linux
/dev/cciss/c0d0p6              9536          15615       48837568+       83      Linux
/dev/cciss/c0d0p7             15616        21695         48837568+       83    Linux Original Cylinder size with 46GB

Command (m for help): quit 

“Delete the Last partition and create it again”.

5) [root@ff13manish /]# fdisk /dev/cciss/c0d0

The number of cylinders for this disk is set to 26761. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with:

a.Software that runs at boot time (e.g., old versions of LILO)
b.Booting and partitioning software from other OS’s (e.g., DOS FDISK, OS/2 FDISK)
Command (m for help): d
Partition number (1-7): 7

“Don’t Quit here  with save option , you have to continue without coming out from fdisk Menu”
Command (m for help): n
First cylinder (15616-26761, default 15616)
Using default value 15616
Last cylinder or +size or +sizeM or +sizeK (15616-26761, default 26761)

Using default value 26761
Command (m for help): p 
Disk /dev/cciss/c0d0: 220.1 GB, 220122071040 bytes
255 heads, 63 sectors/track, 26761 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot                   Start        End        Blocks            Id     System
/dev/cciss/c0d0p1 *           1             13        104391             83     linux
/dev/cciss/c0d0p2             14           1925     15358140         83     Linux
/dev/cciss/c0d0p3             1926       3455     12289725         82     Linux swap
/dev/cciss/c0d0p4             3456       26761   187205445       5      Extended
/dev/cciss/c0d0p5             3456       9535     48837568+      83     Linux
/dev/cciss/c0d0p6             9536      15615    48837568+      83     Linux
/dev/cciss/c0d0p7             15616    26761    89530213+      83     Linux (Now Size moves to 89 GB)


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.
6) Execute Partprobe command 
# partprobe
7) Execute Reszie2fs command
[root@ff13manish /]# resize2fs /dev/cciss/c0d0p7
resize2fs 1.35 (Date)
Resizing the filesystem on /dev/cciss/c0d0p7 to 22382553 (4k) blocks
The filesystem on /dev/cciss/c0d0p7 is now 22382553 blocks long.

8) Now enable ext3 feature in filesystems
tune2fs -j /dev/cciss/c0d0p7
tune2fs 1.35 (Date)
Creating  journal inode: done
This filesystem will be automatically checked every 22 mounts or 180 days, whichever comes first.
Use tune2fs -c or -i to override.
Now check by mounting the filesystems
[root@ff13manish /]# mount  -t ext3 /dev/cciss/c0d0p7  /Name2
[root@ff13manish /]# df -h
Filesystem               Size         Used     Avail     Use%     Mounted on 

/dev/cciss/c0d0p2        15G      4.5G    9.3G        33%          /
/dev/cciss/c0d0p1        99M      12M     83M      12%         /boot
None                             4.0G     0       4.0G        0%          /dev/shm
/dev/cciss/c0d0p6        46G      85M     44G       1%          /Name1
/dev/cciss/c0d0p7        85G      107M    83G      1%         /Name2

Check your data :
[root@ff13vel /]# cd /name2
[root@ff13vel name2]# ls
lost+found  report-4b79378d-0000265d-00000003.zip  RHEL 4 AS UTILITY FOR LINUX
[root@ff13vel name2]# ls -al            
total 104
drwxr-xr-x   4 root root  4096 Feb 17 11:27 .
drwxr-xr-x  29 root root  4096 Feb 17 10:08 ..
drwx------2 root root 16384 Feb 16 17:01 lost+found
-rw-r--r--1 root root 67517 Feb 15 18:27 report-4b79378d-0000265d-00000003.zip
drwxr-xr-x   2 root root  4096 Feb 15 16:57 RHEL 4 AS UTILITY FOR LIN

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