Bug 438153

Summary: Poor LVM mirroring performance
Product: Red Hat Enterprise Linux 5 Reporter: Scott Crenshaw <crenshaw>
Component: kernelAssignee: Mikuláš Patočka <mpatocka>
Status: CLOSED ERRATA QA Contact: Martin Jenner <mjenner>
Severity: high Docs Contact:
Priority: high    
Version: 5.2CC: agk, bmr, bstevens, cmarthal, coughlan, edamato, herbert, jbrassow, mbroz, pdemauro, tao
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-01-20 20:02:17 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: 432566    
Bug Blocks: 448732    
Attachments:
Description Flags
first patch
none
second patch none

Comment 8 Mikuláš Patočka 2008-08-19 21:09:18 UTC 
Created attachment 314575 [details]
first patch

First patch --- use timers when we need delayed wake-up.
Comment 9 Mikuláš Patočka 2008-08-19 21:10:17 UTC 
Created attachment 314576 [details]
second patch

And the second patch: unplug the queue to avoid 3ms delay.
Comment 10 Don Zickus 2008-09-15 14:17:00 UTC 
in kernel-2.6.18-115.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 14 errata-xmlrpc 2009-01-20 20:02:17 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-2009-0225.html