[CentOS] General ?: GFS & Clustering support in CentOS 4.x

Hi,

Does CentOS 4.x support GFS & clustering? I noticed the package in the 
3.x tree, but cannot locate it in any of the 4.x trees.

I thought it does, but I cannot locate the packages. If it does support 
GFS and clustering, which packages are required and where are they located?

Thanks in advance,
Akbar