Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007 Installation Manual page 286

• Oracle RAC and other databases
• General applications and workloads
• XEN image store in a cluster
XEN virtual machines and virtual servers can be stored on OCFS2 volumes that
are mounted by cluster servers to provide quick and easy portability of XEN virtual
machines between servers.
• LAMP (Linux, Apache, MySQL, and PHP | PERL | Python) stacks
In addition, it is fully integrated with Heartbeat 2.
As a high-performance, symmetric, parallel cluster file system, OCFS2 supports the
following functions:
• An application's files are available to all nodes in the cluster. Users simply install
it once on an OCFS2 volume in the cluster.
• All nodes can concurrently read and write directly to storage via the standard file
system interface, enabling easy management of applications that run across a cluster.
• File access is coordinated through the Distributed Lock Manager (DLM).
DLM control is good for most cases, but an application's design might limit scala-
bility if it contends with the DLM to coordinate file access.
• Storage backup functionality is available on all back-end storage. An image of the
shared application files can be easily created, which can help provide effective
disaster recovery.
OCFS2 also provides the following capabilities:
• Metadata caching
• Metadata journaling
• Cross-node file data consistency
• A GTK GUI-based administration via the ocfs2console utility
268 Installation and Administration