Software Raid size increase

Guys ,

We have a software Raid partition , it is running out of space . We want to
increase this partition size by adding a HD , we want to do that without
formatting .
Is it possible ? How if yes.

Here are some details :

This server currently has 2 SCSI HDs (sda & sdb) , 16 GB each .

             ------------------------- ----------------------------
------------------------------------------------------
/dev/sda          |_/boot_(100MB)__| _/swap_(2 GB)_____|________/local
(software raid)_________|


------------------------------------------------------------------------------------------------------------
/dev/sdb          |_______________/local (software raid)_______________
_____________________|


/dev/md0 is mounted as /local , this is the partition we want to increase .
We want to add a third HD ,

Here is the output of 'df -h' command :
      Filesystem        Size        Used  Avail       Use%  Mounted on
      /dev/sda2               5.8G        2.7G        2.7G        50%   /
      /dev/sda1               99M   8.8M        84M   10%   /boot
      /dev/md0               25G    23G   1.8G        93%   /local
      none                    504M      0       503M        0%    /dev/shm


Here is the output of running 'fdisk /dev/sda' then p

      Disk /dev/sda: 255 heads, 63 sectors, 2212 cylinders
      Units = cylinders of 16065 * 512 bytes

      Device      Boot    Start      End        Blocks      Id    System
      /dev/sda1 *             1           13          104391      83
      Linux
      /dev/sda2    14         778         6144862+    83    Linux
      /dev/sda3               779         1039        2096482+    82
      Linux swap
      /dev/sda4               1040        2212        9422122+    f
      Win95 Ext'd (LBA)
      /dev/sda5               1040        2212        9422091     fd
      Linux raid autodetect



Here is the output of running 'fdisk /dev/sdb' then p

      Disk /dev/sdb: 255 heads, 63 sectors, 2212 cylinders
      Units = cylinders of 16065 * 512 bytes

       Device     Boot    Start      End        Blocks           Id  System
      /dev/sdb1 *             1           2212        17767858+         fd
      Linux raid autodetect

Any idea ?
Thanks.
IT - Operations
[email protected]
02 6652656 ext. 229


 

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