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HP Tru64 UNIX Version 5.1B-2 and Higher Patch Kits: Patch Kit Installation Instructions > Chapter 1 Patch Process Overview![]() General Issues and Restrictions |
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This section provides information you must be aware of when installing or removing patches. Be sure to check the Patch Summary and Release Notes document of the kit you are installing for any issues and restrictions that pertain to that installation. Although you can install patches in multi-user mode, we recommend that you bring down your system to single-user mode when installing patches that affect the operation of the Tru64 UNIX operating system or the product you are patching. If your system must remain in multi-user mode, apply the patches when the system is as lightly loaded as possible. There are no restrictions on performing patch selection and preinstallation checking in multi-user mode. Patch removals can only be done in single-user mode. When installing a patch kit downloaded from the Web, untar the file in a clean directory; that is, one that does not contain files from a previous patch kit. A failure to do this can have adverse consequences when installing the new kit. Patching your system before creating your cluster can save you time, although if you do so, be aware that you cannot then remove the patch kit. The following steps describe how to patch your system before creating a cluster:
See the Tru64 UNIX Installation Guide for information about installing the operating system and the TruCluster Cluster Installation manual for information about creating your cluster. Remote Installation Services (RIS) and Dataless Management Services (DMS) installations of patches are not supported. However, the patch kit installation mechanism does support network installation via NFS. You can install and remove Tru64 UNIX and TruCluster software patches only through dupatch. You cannot directly install or reinstall the patch subsets with setld. This ensures that patch tracking and management are not compromised. The patch management utility assumes there is one /var/adm/patch/backup directory per system. It does not handle placement of archived original files for multiple systems in one directory. Do not enter a Ctrl/c command during the installation phase of the patch kit.
If you use dupatch to remove a patch containing a customized file, messages similar to the following may appear in the session log file, /var/adm/patch/log/session.log:
This message warns you to examine the removed patch for any customized files it may contain, which in this example is the file /etc/inetd.conf. In order to keep those customizations, you will have to manually add them. The following are examples of such customized files:
Release patches do not automatically supersede dupatch-based Customer-Specific patches (CSPs). Any Release patch blocked by a CSP will result in a dupatch message. See “Patch Installation Blocked by Installed Patch or Subset ” for more information. See the release notes of the new style patch kits for a list of CSPs that are included in those patch kits. The Patch Summary and Release Notes document included with Version 5.1B-2 and higher includes a list of CSPs that were reconciled in the patch kit. In the presence of patches of layered products, certain procedures used to upgrade a system to a later version of Tru64 UNIX can lead to inconsistencies among operating system and layered product objects.
You cannot remove a patch kit on systems that have New Hardware Delivery 7 (NHD-7) kit installed when either of the following conditions exist:
If you must remove the patch kit, the only solution is to rebuild your system environment by reinstalling the Version 5.1B operating system and then restoring your system to its state before you installed NHD-7 with the unwanted patch kit. Do not install the NHD–5 or NHD–6 kits on your TruCluster system if you have installed this patch kit or earlier patch kits. Doing so may cause an incorrect system configuration. The installation code for these new hardware delivery kits does not correctly preserve some cluster subset files. If you made the following changes to your system after installing this patch kit, you will have to undo those changes before you can uninstall it:
To uninstall this kit, do the following:
You can now add the cluster members you removed and reinstall the hardware you removed, as long as the support for it existed in the pre-patched system. You can also reinstall the patch kit. If removing this patch kit restores your system to a pre-patched state, you must run the script /etc/dn_fix_dat.sh before rebooting your system during the patch-deletion process. This situation would occur if Version 5.1B-4 is the only Tru64 UNIX patch kit installed on your 5.1B system.
Failing to run this script will result in your system being unable to boot normally. If this occurs, do the following:
If you also need to reverse the version switch as described in “Version Switches”, run the /etc/dn_fix_dat.sh script after step 5 in that process. |
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