I have noted in the GFS2 document that it is part of the Resilient Storage Add-On.
Verified in Red_Hat_Enterprise_Linux-Global_File_System_2-6-en-US-7-13
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.