Gfs Functions - Red Hat GLOBAL FILE SYSTEM 4.7 Manual

Chapter 1. GFS Overview
Figure 1.3. GFS and GNBD with Directly Connected Storage

2. GFS Functions

GFS is a native file system that interfaces directly with the VFS layer of the Linux kernel
file-system interface. GFS is a cluster file system that employs distributed metadata and multiple
journals for optimal operation in a cluster. Cluster management of GFS nodes is managed
through Red Hat Cluster Suite. Volume management is managed through CLVM (Cluster
Logical Volume Manager). For information about Red Hat Cluster Suite refer to Configuring and
Managing a Red Hat Cluster. For information about using CLVM, refer to LVM Administrator's
Guide.
Note
CLVM is a cluster-wide implementation of LVM, enabled by the CLVM daemon,
running in a Red Hat Cluster Suite cluster. The daemon makes it possible
clvmd
to use LVM2 to manage logical volumes across a cluster, allowing all nodes in
the cluster to share the logical volumes.
GFS provides the following main functions:
4