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gab-rhel5_x86_64-Patch-6.1.0.100
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 Basic information
Release type: Patch
Release date: 2015-04-27
OS update support: None
Technote: None
Documentation: None
Popularity: 560 viewed    155 downloaded
Download size: 2.3 MB
Checksum: 2599661817

 Applies to one or more of the following products:
Cluster Server 6.1 On RHEL5 x86-64
Storage Foundation Cluster File System 6.1 On RHEL5 x86-64
Storage Foundation for Oracle RAC 6.1 On RHEL5 x86-64
Storage Foundation HA 6.1 On RHEL5 x86-64

 Obsolete patches, incompatibilities, superseded patches, or other requirements:
None.

 Fixes the following incidents:
3728108

 Patch ID:
VRTSgab-6.1.0.100-GA_RHEL5

 Readme file  [Save As...]
                          * * * READ ME * * *
     * * * Veritas Group Membership and Atomic Broadcast 6.1 * * *
                      * * * Patch 6.1.0.100 * * *
                         Patch Date: 2015-04-16


This document provides the following information:

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


PATCH NAME
----------
Veritas Group Membership and Atomic Broadcast 6.1 Patch 6.1.0.100


OPERATING SYSTEMS SUPPORTED BY THE PATCH
----------------------------------------
RHEL5 x86-64


PACKAGES AFFECTED BY THE PATCH
------------------------------
VRTSgab


BASE PRODUCT VERSIONS FOR THE PATCH
-----------------------------------
   * Symantec Cluster Server 6.1
   * Symantec Storage Foundation Cluster File System HA 6.1
   * Symantec Storage Foundation for Oracle RAC 6.1
   * Symantec Storage Foundation HA 6.1


SUMMARY OF INCIDENTS FIXED BY THE PATCH
---------------------------------------
Patch ID: VRTSgab-6.1.0.100
* 3728108 (3728106) On Linux, the value corresponding to 15 minute CPU load average as shown in /proc/loadavg file wrongly increases to about 4.


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

Patch ID: VRTSgab-6.1.0.100

* 3728108 (Tracking ID: 3728106)

SYMPTOM:
On Linux, the value corresponding to 15 minute CPU load average increases to about 4 even when clients of GAB are not running and the CPU usage is relatively low.

DESCRIPTION:
GAB reads the count of currently online CPUs to correctly adapt the client heartbeat timeout with the system load. Due to an issue, it accidentally overwrites the kernel's load average value. As a result, even though the actual CPU usage does not increase, the value
that is observed from /proc/loadavg for the 15 minute CPU load average is 
increased.

RESOLUTION:
The code is modified so that the GAB module does not overwrite the kernel's load average value.



INSTALLING THE PATCH
--------------------
Run the Installer script to automatically install the patch:
-----------------------------------------------------------
To install the patch perform the following steps on at least one node in the cluster:
1. Copy the hot-fix gab-rhel5_x86_64-Patch-6.1.0.100.tar.gz to /tmp
2. Untar gab-rhel5_x86_64-Patch-6.1.0.100.tar.gz to /tmp/hf
    # mkdir /tmp/hf
    # cd /tmp/hf
    # gunzip /tmp/gab-rhel5_x86_64-Patch-6.1.0.100.tar.gz
    # tar xf /tmp/gab-rhel5_x86_64-Patch-6.1.0.100.tar
3. Install the hotfix
    # pwd /tmp/hf
    # ./installVRTSgab610HF100 [<host1> <host2>...]

Install the patch manually:
--------------------------
To install the patch perform the following steps on all nodes in the VCS cluster
:
1. Stop VCS stack on the cluster node.
2. Uninstall the GAB rpm
    # rpm -ev VRTSgab --nodeps
3. Install the patch rpm
4. Start VCS stack on the cluster node


REMOVING THE PATCH
------------------
To uninstall the patch perform the following steps on all nodes in the VCS cluster:
1. Stop VCS stack on the cluster node.
2. Uninstall the GAB patch rpm
    # rpm -ev VRTSgab --nodeps
3. Install the base GAB RPM (6.1)
4. Start VCS stack on the cluster node


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


OTHERS
------
NONE



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