Growing a LVM filesystem

[Joey Prestia]

I am trying to figure out how to grow the filesystem on a logical volume 
I am using ext3,the redhat documentation says:

   To grow a file system on a logical volume, perform the following steps:

    1.  Make a new physical volume.
    2.  Extend the volume group that contains the logical volume with 
the file system you are growing to include the new physical volume.
    3.  Extend the logical volume to include the new physical volume.
    4.  Grow the file system.



My question is this how do i grow the filesystem? Parted apparently cant 
handle it (I tried it by specifing parted /dev/VG_01/LV_01 )and it told 
me filesystem has an incompatible feature enabled. I dont know of 
another tool that is a command line tool that is available to use.

Joey Prestia