ClusterNFS is a set of patches for the "Universal NFS Daemon" (UNFSD) to allow multiple clients to nfs mount the same root filesystem by providing "tagged" filenames. When a client requests the file "/path/filename", the ClusterNFS server checks for the existence of files of the form "/path/filename$$TAG=value$$".
ClusterNFS is a property of ClusterNFS respective authors, vendors and developers. You can download ClusterNFS for your hardware. If you want to use ClusterNFS for other purpose, Please contact the authors, vendors and developers of ClusterNFS.