Bug 467829

Summary: md: pass down BIO_RW_SYNC in raid{1,10}' applied to RHEL4 kernel
Product: Red Hat Enterprise Linux 4 Reporter: Wade Mealing <wmealing>
Component: kernelAssignee: Wade Mealing <wmealing>
Status: CLOSED ERRATA QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: high Docs Contact:
Priority: high    
Version: 4.7CC: cward, dmair, jtluka, tao, tis
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 489447 (view as bug list) Environment:
Last Closed: 2009-05-18 19:26:33 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:
Attachments:
Description Flags
patch none

Description Wade Mealing 2008-10-21 06:08:24 UTC 
Description of problem:

According  http://www.mail-archive.com/linux-raid@vger.kernel.org/msg06778.html the patch would fix several performance issues on RHEL4 with RAID1 and RAID10. A customer need this patch backported to the RHEL4 kernel.

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

kernel-2.6.9-78.EL.src.rpm
Comment 2 Wade Mealing 2008-10-21 22:13:57 UTC 
Created attachment 321097 [details]
patch
Comment 5 RHEL Program Management 2009-03-12 18:57:07 UTC 
Since RHEL 4.8 External Beta has begun, and this bugzilla remains 
unresolved, it has been rejected as it is not proposed as exception or 
blocker.
Comment 8 RHEL Program Management 2009-03-23 14:57:54 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 9 Jan Tluka 2009-03-23 15:19:43 UTC 
QA ACK for RHEL4.8. If possible, could customer provide performance comparison of patched/unpatched kernel?
Comment 11 Vivek Goyal 2009-03-25 13:29:26 UTC 
Committed in 85.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/
Comment 14 Chris Ward 2009-05-05 13:58:48 UTC 
Any updates here? Has this issue been resolved in the RHEL 4.8 Beta? later kernel?
Comment 16 errata-xmlrpc 2009-05-18 19:26:33 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/RHSA-2009-1024.html