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Upgrading OCFS2 - 1.4

by Jeff Hunter, Sr. Database Administrator

Contents

  1. Overview
  2. Upgrade OCFS2
  3. About the Author

Overview

This article describes the steps necessary to upgrade an installation of Oracle Cluster File System 2 (OCFS2) 1.4 on the Linux platform. More specifically, the OCFS2 kernel driver will be upgraded from version 1.4.2-1 to the latest release which at the time of this writing is 1.4.7-1.

In addition, the OCFS2 Tools and Console will be upgraded from version 1.4.2-1 to version 1.4.4-1.

For the purpose of this article, a single OCFS2 file system is configured on a two node Oracle RAC 10g environment to support a shared file system required by Oracle Clusterware (the Oracle cluster registry file and the voting disk). The following table describes the current OCFS2 file system:

Mount Point LUN Purpose OCFS2 Kernel Driver OCFS2 Tools OCFS2 Console
/u02 /dev/iscsi/thingdbcrsvol1/part1 Oracle CRS Components 1.4.2-1.el5 1.4.2-1.el5 1.4.2-1.el5

Upgrade OCFS2

Upgrading from OCFS2 version 1.4.2-1 to 1.4.7-1 does not require any on-disk format change. At a minimum, only a simple kernel driver update is required in most situations which means the entire upgrade process could be performed in a rolling manner. While this would avoid a cluster-wide outage, a full outage was still scheduled for this upgrade since it was unknown if cleaning out any previous orphan files (using fsck.ocfs2) could be performed on a disk device that still had other cluster instances mounting it.

As mentioned earlier, the OCFS2 Console and OCFS Tools module will also be upgraded to the latest version along with the kernel driver.

Perform the following from all nodes in the Oracle RAC cluster.

About the Author

Jeffrey Hunter is an Oracle Certified Professional, Java Development Certified Professional, Author, and an Oracle ACE. Jeff currently works as a Senior Database Administrator for The DBA Zone, Inc. located in Pittsburgh, Pennsylvania. His work includes advanced performance tuning, Java and PL/SQL programming, developing high availability solutions, capacity planning, database security, and physical / logical database design in a UNIX / Linux server environment. Jeff's other interests include mathematical encryption theory, tutoring advanced mathematics, programming language processors (compilers and interpreters) in Java and C, LDAP, writing web-based database administration tools, and of course Linux. He has been a Sr. Database Administrator and Software Engineer for over 20 years and maintains his own website site at: http://www.iDevelopment.info. Jeff graduated from Stanislaus State University in Turlock, California, with a Bachelor's degree in Computer Science and Mathematics.



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Last modified on
Wednesday, 18-Aug-2010 19:59:59 EDT
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