About This Manual

This manual provides instructions for installing and removing patches that are provided by Compaq Computer Corporation in its Tru64^TM UNIX and TruCluster software products patch kits. It also describes baselining techniques and provides other information for working with patches.

The information provided here deals with patches installed on Versions 4.0F and higher, including both Release and Customer-Specific (CSP) patches. The differences in dealing with the different product versions and patch-kit types are minimal; this manual alerts you to those differences during process discussions and step-by-step instructions.

For information about individual patches, see the Patch Summary and Release Notes document for the kit you are installing.

Audience

This manual is for those who install and remove patch kits and manage patches after they are installed.

Organization

The first two chapters describe the concepts of the patching process and provide an overview of the patch management utility, dupatch. Chapter 3 lists issues and restrictions you should be aware of before you begin to work with the patch kits following the step-by-step procedures in Chapter 4.

This manual is organized as follows:

Chapter 1	Provides an overview of the concepts and features of the patch kits.
Chapter 2	Introduces the `dupatch` utility and describes its features.
Chapter 3	Provides information you must be aware of when installing and removing patches.
Chapter 4	Describes the procedures for installing and removing patches.
Chapter 5	Describes the rolling upgrade process for patching a system running TruCluster Server Version 5.0A or higher while the cluster is in operation. This process is also used for upgrading to a new version of the TruCluster software software or for doing an upgrade and a patch together.
Chapter 6	Describes the no-roll patch process, which provides a way to apply patches to a cluster quickly in order to minimize downtime and reduce the number of reboots required.
Appendix A	Describes error messages you might see while installing, removing, or maintaining patches.
Appendix B	Provides examples of a typical patch installation, a TruCluster patch installation in a rolling upgrade, a baselining process, and a patch removal process.
Appendix C	Provides information about using the `dupatch` command-line interface and documents the `dupatch`(8) reference page.

Related Documentation

The following documentation can help you work with patch kits:

The Patch Summary and Release Notes document for the patch kit you are working with

The dupatch(8) reference page, which is installed on you system when you install the patch tools

The Tru64 UNIX Installation Guide and System Administration manuals

Tru64 UNIX manual

TruCluster Software Installation and Cluster Administration manuals

Any release-specific documentation, specifically the Release Notes for the version you are patching

Reader's Comments

Compaq welcomes any comments and suggestions you have on this and other Tru64 UNIX manuals.

You can send your comments in the following ways:

Fax: 603-884-0120 Attn: UBPG Publications, ZKO3-3/Y32

Internet electronic mail: readers_comment@zk3.dec.com
A Reader's Comment form is located on your system in the following location:
```
/usr/doc/readers_comment.txt
```

Mail:
Compaq Computer Corporation
UBPG Publications Manager
ZKO3-3/Y32
110 Spit Brook Road
Nashua, NH 03062-2698

Please include the following information along with your comments:

The section numbers and page numbers of the information on which you are commenting.

The version of Tru64 UNIX that you are using.

If known, the type of processor that is running the Tru64 UNIX software.

The Tru64 UNIX Publications group cannot respond to system problems or technical support inquiries. Please address technical questions to your local system vendor or to the appropriate Compaq technical support office. Information provided with the software media explains how to send problem reports to Compaq.

Conventions

This guide uses the following conventions:

file: Italic (slanted) type indicates variable values, placeholders, and function argument names.
[Ctrl/x]: This symbol indicates that you hold down the first named key while pressing the key or mouse button that follows the slash. In examples, this key combination is enclosed in a box (for example, [Ctrl/C] ).
% cat: Boldface type in interactive examples indicates typed user input.
device names: Operating system versions before Version 5.0 use different names than those of Version 5.0 and higher. In general, this manual uses the Version 5.0 names. For example, where a partition name is represented by /dev/disk/dsk3g, the Version 4.0n name might be /dev/rz3g.
. . .: This symbol is used in output examples to replace redundant information. This is information you would see on your terminal screen or in a log file created by dupatch, but is not particularly useful in the examples in this manual.
Glossary Terms: In the online version of this document, various terms are linked to the Glossary. By clicking on the term, you will be taken to its definition. You can easily return to the place you were reading by clicking on your browser's Back button.