* * * READ ME * * *
             * * * Veritas Cluster Server 5.1 SP1 RP1 * * *
                         * * * P-patch 1 * * *
                         Patch Date: 2011-08-23


This document provides the following information:

   * PATCH NAME
   * PACKAGES AFFECTED BY THE PATCH
   * BASE PRODUCT VERSIONS FOR THE PATCH
   * OPERATING SYSTEMS SUPPORTED BY THE PATCH
   * INCIDENTS FIXED BY THE PATCH
   * INSTALLATION PRE-REQUISITES
   * INSTALLING THE PATCH
   * REMOVING THE PATCH


PATCH NAME
----------
Veritas Cluster Server 5.1 SP1 RP1 P-patch 1


PACKAGES AFFECTED BY THE PATCH
------------------------------
VRTSllt


BASE PRODUCT VERSIONS FOR THE PATCH
-----------------------------------
   * Veritas Cluster Server 5.1 SP1 RP1
   * Veritas Storage Foundation for Oracle RAC 5.1 SP1 RP1
   * Veritas Storage Foundation Cluster File System 5.1 SP1 RP1
   * Veritas Storage Foundation High Availability 5.1 SP1 RP1


OPERATING SYSTEMS SUPPORTED BY THE PATCH
----------------------------------------
AIX


INCIDENTS FIXED BY THE PATCH
----------------------------
This patch fixes the following Symantec incidents:

Patch ID: 5.1.101.100

* 2481086 (Tracking ID: 2480982)

SYMPTOM:
The performance of the LLT-over-UDP configuration is slow, as compared to the 
LLT-over-Ethernet configuration. Also, the 'lltstat' command output shows 
higher retransmit and NACKS (negative acknowledgement) count.

DESCRIPTION:
The LLT-over-UDP configuration works over the IP layer, and is therefore a 
little slower than the LLT-over-Ethernet configuration. However, on the AIX 
operating system, the LLT-over-UDP configuration is more slow than expected due 
to a bug in the LLT transmit path.

RESOLUTION:
Symantec has modified the  LLT transmit path to fix this issue.


INSTALLING THE PATCH
--------------------
To Install the LLT51SP1RP1P1 patch on your system,
execute the following steps on all the nodes in the cluster:
1. Stop the stack

2. Verify that all the GAB ports have been closed:
   # /sbin/gabconfig -a
   The above command should not list any GAB port.

3. Verify that LLT has been unconfigured:
   # /sbin/lltconfig
   LLT is not running

4. Verify that the LLT driver has been unloaded:
   # /usr/sbin/strload -qd /usr/lib/drivers/pse/llt
   /usr/lib/drivers/pse/llt: no
   If LLT driver is still loaded, "yes" will show up in the output above.
   Run below command to unload LLT driver.
   # /usr/sbin/strload -ud /usr/lib/drivers/pse/llt

5. Unzip the tar-zipped LLT patch that you downloaded from the Symantec site
   to a directory of your choice.
   Change directory to the unzipped patch location.
   Install the VRTSllt (5.1.101.100) patch using the following command:
   # installp -a -d [extract dir] VRTSllt

6. Verify that the new patch has been installed:
   # lslpp -l VRTSllt
     Fileset                      Level  State      Description
     ----------------------------------------------------------------------------
     Path: /usr/lib/objrepos
     VRTSllt                5.1.101.100  APPLIED    Veritas Low Latency Transport
                                                    by Symantec
                                                    08/02/2011-03:16:43

7. reboot the system.


REMOVING THE PATCH
------------------
To remove/un-install the LLT51SP1RP1P1 patch from your system,
execute the following steps on all the nodes in the cluster:
1. Stop the stack.

2. Backout the patches:
   # installp -r VRTSllt 5.1.101.100

3. Verify that the patch has been backed out:
   # lslpp -l VRTSllt
     Fileset                      Level  State      Description
     ----------------------------------------------------------------------------
     Path: /usr/lib/objrepos
     VRTSllt                  5.1.101.0  APPLIED    Veritas Low Latency Transport
                                                    by Symantec
                                                    01/20/2011-21:34:38
4. reboot the system.


SPECIAL INSTRUCTIONS
--------------------
NONE


OTHERS
------
NONE