Red Hat ES 5 - missing ext2online command

[Anne]

 Hi All ~

Does anyone know what Red Hat decided to replace the ext2online utility
with?

I have a bunch of Logical Volume's I need to extend, and in the past, one
always had to run the ext2online utility to allow this expansion of logical
Volume's. But..., this tool no longer exists on Red Hat ES 5. 

Any ideas?

Thank you to all in advance.

Anne