Upgrading ocfs is very easy :

download the new packages for your platform/distribution into a subdir
specifically

	ocfs-support-<version>.rpm
	ocfs-tools-<version>.rpm
	ocfs-<kernel>-<version>.rpm

on every node, just update the packages eg : 

	rpm -Uvh *.rpm

preferrably do a reboot of every node in the cluster.

remount the filesystems. 

The on disk format for version 1 is the same for all patch updates.