This was announced in the openssi mailing list. 

For those who are new to openssi 

OpenSSI (Single System Image) Clusters for Linux
================================================
The OpenSSI project leverages both Compaq's NonStop Clusters for
Unixware technology and other open source technology to provide a full,
highly available SSI environment for Linux. Goals for OpenSSI clustering
include availability, scalability and manageability, built from standard
servers. Technology pieces will include: membership, single root and
single init, cluster filesystems and DLM, single process space and
process migration, load leveling, single and shared IPC space, device
space and networking space, and single management space. The OpenSSI
project will leverage the Cluster Infrastructure (CI) for Linux project.
                                                                                
If you only have a single machine, you can play with an OpenSSI cluster
of virtual User-Mode Linux (UML) machines. For more information, see:
        http://OpenSSI.org/ssiuml-howto/index.html
                                                                                
If you have multiple machines but no shared disk hardware, you can
follow the installation instructions in docs/INSTALL. They describe how
to set up an OpenSSI cluster using our Cluster File System (CFS) for the
shared root.
                                                                                
If you have shared disk hardware, such as FCAL or shared SCSI, you can
follow the docs/INSTALL.gfs instructions to set up a cluster using the
Global File System (GFS) for the shared root.
                                                                                
-aneesh