Table of Contents
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Oracle Cluster File System 2
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Section 13.1, "Overview of OCFS2"
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Section 13.2, "Creating an OCFS2 Volume"
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Section 13.3, "Mounting an OCFS2 Volume"
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Section 13.4, "Additional Information"
13.1 Overview of OCFS2
Oracle Cluster File System 2 (OCFS2) is a general-purpose journaling file system that
is fully integrated in the Linux 2.6 kernel and later. OCFS2 allows you to store applica-
tion binary files, data files, and databases on devices in a SAN. All nodes in a cluster
have concurrent read and write access to the file system. A distributed lock manager
helps prevent file access conflicts. OCFS2 supports up to 32,000 subdirectories and
millions of files in each directory. The O2CB cluster service (a driver) runs on each
node to manage the cluster.
13.1.1 Features and Benefits
In August 2005, OCFS2 was added to SUSE Linux Enterprise Server 9 to support Oracle
Real Application Cluster (RAC) databases and Oracle Home (its application files). In
SUSE Linux Enterprise Server 10 and later, OCFS2 can be used for any of the following
storage solutions:
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Oracle Cluster File System 2
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Troubleshooting
