Bug 660036

Summary: shmmax and shmall defaults are not the same as in RHEL5
Product: Red Hat Enterprise Linux 6 Reporter: Raghu Udiyar <rudiyar>
Component: initscriptsAssignee: initscripts Maintenance Team <initscripts-maint-list>
Status: CLOSED ERRATA QA Contact: qe-baseos-daemons
Severity: low Docs Contact:
Priority: low    
Version: 6.0CC: azelinka, dshaks, jburke, notting, plautrba, riel, rvokal
Target Milestone: rcKeywords: Regression
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: initscripts-9.03.19-1.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 1043518 (view as bug list) Environment:
Last Closed: 2011-05-19 13:51:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 645519, 1043518    
Attachments:
Description Flags
set default shmmax and shmall for certain architectures none

Description Raghu Udiyar 2010-12-05 05:38:15 UTC 
Description of problem:
As per : https://bugzilla.redhat.com/show_bug.cgi?id=184820

In RHEL5, shmmax and shmall were set to the theoretical limit of the architecture, which for x86_64 was 64G and 4G respectively. RHEL6 doesn't have these set.

Version-Release number of selected component (if applicable):

initscripts-9.03.17-1.el6.x86_64

How reproducible:

Always

Steps to Reproduce:
1. Compare /etc/sysctl.conf in RHEL5 and RHEL6

  
Actual results:
shmmax and shmall reverts back to the defaults set in RHEL3/4

Expected results:
shmmax and shmall should be set the same way it was done in RHEL5

Additional info:

If it was intentionally reverted, I couldn't find the reasons to do so.
Comment 2 Bill Nottingham 2010-12-06 16:24:16 UTC 
It wasn't really an intentional change; it was a RHEL 5 change that we forgot to pull forward. CC'ing some more people for discussion of the impact.
Comment 4 Petr Lautrbach 2011-02-04 12:36:56 UTC 
Created attachment 476993 [details]
set default shmmax and shmall for certain architectures

This patch is adapted from RHEL-5 branch (http://git.fedorahosted.org/git/?p=initscripts.git;a=commit;h=00b168f895a662adb0cecb12e8d619778f35f633)
Comment 11 errata-xmlrpc 2011-05-19 13:51:46 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0647.html