Extending a Logical Drive to use an extra disk

Hi,

 

I have searched these forums and havent been able to find a suitable answer.

 

My Setup

 

I have a Dell PowerEdge 2600 which uses a Dell Perc 4 RAID controller.  I have 3 x 36GB drives configured as Array-00, Raid 5.

 

The server runs RHAS3 and has now ran out of space on one of the volumes.  I would of liked to have reduce the / volume and extend the /data volume to use this extra space, but there I cannot identify an (safe) method of reducing an EXT3 filesystem.

 

So I would like add another 36GB drive to the array-00, extend the logical drive and once the space has been made available to the OS, extend the /data volume using extendfs.

 

However, after searching these forums, googling the question, reviewing the documentation, and "having a look" at the Perc commands available, i cannot see how to extend the array to use the 4th drive and then extend the logical volume.

 

Can anybody tell me if this is possible and how I can do this please.

 

Thanks, Parker.