SUSE Linux Documentation Chapter 14. Oracle Cluster File System 2 / 14.3. In-Memory File Systems
	14.2. Disk Heartbeat		14.4. Management Utilities and Commands

In-Memory File Systems

OCFS2 uses two in-memory file systems for communications:

Table 14.2. In-Memory File Systems Used by OCFS2

In-Memory File System	Description	Mount Point
configfs	Communicates the list of nodes in the cluster to the in-kernel node manager, and communicates the resource used for the heartbeat to the in-kernel heartbeat thread	/config
ocfs2_dlmfs	Communicates locking and unlocking for clusterwide locks on resources to the in-kernel distributed lock manager that keeps track of all locks and their owners and status	/dlm