Acceptable value of VCS_GAB_TIMEOUT tunable will be restricted in VCS 6.0 and above

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Article ID: 100028272

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Description

Error Message

At the moment the tunable can be set to any value freely.   From example, with VCS 5.1SP1RP3 the following inappropriate values can be set without restriction.

In the file /opt/VRTSvcs/bin/vcsenv, added the line "export VCS_GAB_TIMEOUT=2999999" and restarted VCS.   The tunable is accepted by VCS.

2012/11/22 17:36:34 VCS INFO V-16-1-10125 GAB timeout set to 2999999 ms

Or added the line "export VCS_GAB_TIMEOUT=123" and restarted VCS.

2012/11/22 17:37:56 VCS INFO V-16-1-10125 GAB timeout set to 123 ms

Both of the above two values are inappropriate and will cause VCS to behave erratically.

 

Resolution

 From VCS 6.0 admin guide, it states that the vcs_gab_timeout range is 30 secs to 300 secs:

==================================================
Default: 30000 (denotes 30 seconds)
Range: 30000 to 300000 (denotes 30 seconds to 300 seconds)
==================================================
 
https://www.veritas.com/business/support/resources/sites/BUSINESS/content/live/DOCUMENTATION/5000/DOC5283/en_US/vcs_admin_60_aix.pdf
 
Enhancement will be provide through Etrack 2182462 in VCS 6.0 version and above to prevent the tunable from being set to inappropriate values.

Applies To

The enhancement will be provided in VCS 6.0 and above on all platforms.

Issue/Introduction

Acceptable value of VCS_GAB_TIMEOUT tunable will be restricted in VCS 6.0 and above through Etrack incident 2182462.  This is a new enhancement in 6.0 version to prevent the tunable from being set to inappropriate values.

Additional Information

ETrack: 2182462
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