Bug 882301

Summary:	The technical notes should reflect that the use of the ext4 nobarrier option within guests is not recommended.
Product:	Red Hat Enterprise Linux 6	Reporter:	Lee Yarwood <lyarwood>
Component:	doc-Technical_Notes	Assignee:	Eliska Slobodova <eslobodo>
Status:	CLOSED CURRENTRELEASE	QA Contact:	ecs-bugs
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	6.2	CC:	areis, cpelland, ddumas, italkohe
Target Milestone:	rc	Keywords:	Documentation
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-01-24 10:14:53 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 Lee Yarwood 2012-11-30 15:55:24 UTC

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html-single/Technical_Notes/
~~~
4.2. Known Issues
Enterprise-class storage should always be mounted with using the  -o nobarrier option.
~~~

This statement should be rewritten to highlight that the use of this option within guests is not recommended. Even if the host running the guest is directly connected to 'Enterprise-class storage'

Additional justification available within the following thread :

http://post-office.corp.redhat.com/archives/rhev-prio-list/2012-November/msg00101.html