Bug 523237

Summary:	Add kernel (scsi_dh_rdac) support for Sun 6540 storage arrays. [rhel-5.4.z]
Product:	Red Hat Enterprise Linux 5	Reporter:	RHEL Program Management <pm-rhel>
Component:	kernel	Assignee:	Jiri Pirko <jpirko>
Status:	CLOSED ERRATA	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	medium	Docs Contact:
Priority:	low
Version:	5.5	CC:	agk, bdonahue, bmarzins, bmr, catapult, christophe.varoqui, cluster-maint, coughlan, dhoward, dwysocha, dzickus, edamato, egoggin, heinzm, hjia, jko, jpirko, junichi.nomura, kueda, lmb, mbroz, mchristi, pm-eus, prockai, rdoty, rkhan, tranlan
Target Milestone:	rc	Keywords:	FutureFeature, ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel-2.6.18-164.2.1.el5	Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-09-29 19:34:46 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:	518496
Bug Blocks:	518493, 530243

Description RHEL Program Management 2009-09-14 14:38:00 UTC

This bug has been copied from bug #518496 and has been proposed
to be backported to 5.4 z-stream (EUS).

Comment 3 Jiri Pirko 2009-09-21 11:24:35 UTC

in kernel-2.6.18-164.2.1.el5

Comment 8 errata-xmlrpc 2009-09-29 19:34:46 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/RHSA-2009-1455.html

Comment 9 Jong Bae KO 2009-10-24 06:36:07 UTC

Updated from the customer.
==========
Latest test using RHEL 5.4 with no modified rpm's  
kernel-2.6.18.164.2.1.el5
device-mapper-multipath-0.4.7-30.el5_4.2
kpartx-0.4.7-30.el5_4.2

multipath -ll -v2 returns expected result.
dd if=/dev/zero of=/mountpoint dumps data at expected speed.

Non modified initrd causes so many errors that it slows up the boot by four and a half minutes, when compared to running modified initrd:
mkinitrd -f /boot/initrd-$(uname -r).img $(uname -r) --preload=scsi_dh_rdac  
==========