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Bug 862597

Summary:	Description of kernel.msgmax and kernel.msgmnb wrong in /etc/sysctl.conf
Product:	Red Hat Enterprise Linux 5	Reporter:	Michael Firth <mfirth>
Component:	initscripts	Assignee:	Lukáš Nykrýn <lnykryn>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-daemons
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	5.8	CC:	azelinka, harald, initscripts-maint-list, jscotka
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	initscripts-8.45.44-1.el5	Doc Type:	Bug Fix
Doc Text:	The description of the kernel.msgmax parameter "Controls the default maxmimum size of a mesage queue" and the kernel.msgmnb parameter "Controls the maximum size of a message, in bytes" in the default /etc/sysctl.conf were wrong - the actual definitions are the opposite way around.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-09-30 22:01:34 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Michael Firth 2012-10-03 10:48:34 UTC

Description of problem:
The description of the kernel.msgmax parameter "Controls the default maxmimum size of a mesage queue" and the kernel.msgmnb parameter "Controls the maximum size of a message, in bytes" in the default /etc/sysctl.conf are wrong - the actual definitions are the opposite way around.
This causes confusion for anyone trying to customise the SYS V message queue behaviours.
It would also be useful to have the value for kernel.msgmni in the default file, as the kernel default for this (16) is incredibly low

Version-Release number of selected component (if applicable):
8.45.42-1

How reproducible:
Completely

Steps to Reproduce:
1. cat /etc/sysctl.conf
2. read the descriptions of the two fields
  
Actual results:
# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536

# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536


Expected results:
# Controls the default maxmimum size of a message queue
kernel.msgmnb = 65536

# Controls the maximum size of a message, in bytes
kernel.msgmax = 65536


Additional info:

Comment 1 RHEL Program Management 2013-04-04 12:33:26 UTC

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux release.  Product Management has
requested further review of this request by Red Hat Engineering, for
potential inclusion in a Red Hat Enterprise Linux release for currently
deployed products.  This request is not yet committed for inclusion in
a release.

Comment 7 errata-xmlrpc 2013-09-30 22:01:34 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-1300.html