The Cluster Foundation is the base on which all the other modules are built. It provides the fundamental services, such as the OSD, that all other PRIMECLUSTER components use as well as the base cluster services.
CF has the following features:
Contains a loadable pseudo device driver that automatically loads when the system starts
Supplies the CF driver that contains the CF kernel-level OSD and generic modules
Some of the functions that CF provides are detailed in the sections that follow.
CF uses the cluster interconnect to perform the control of existence monitoring of nodes and communication between nodes. For details on cluster interconnect, see "Chapter 3 Cluster interconnect details."