Bug 223985

Summary:	kernel-xen: boot panic with >=64GB memory (release note)
Product:	Red Hat Enterprise Linux 5	Reporter:	Chris Lalancette <clalance>
Component:	redhat-release-notes	Assignee:	Don Domingo <ddomingo>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Michael Hideo <mhideo>
Severity:	high	Docs Contact:
Priority:	medium
Version:	5.0	CC:	bcleary, bruce.vessey, ddomingo, lawrence.newitt, mjenner, prasanna.nagasamudram, prashanthanumant.puranik, ramyagovinda.sangati, riel, sivachaitanya.manne, tao, tburke, xen-maint
Target Milestone:	---	Keywords:	Documentation
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	5.0.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-03-14 01:35:03 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:	220592
Bug Blocks:	197865

Comment 2 RHEL Program Management 2007-01-23 15:01:10 UTC

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

Comment 8 Paul Gampe 2007-01-29 22:36:01 UTC

Don where can I see this text online?

Comment 10 Chris Lalancette 2007-02-02 20:10:44 UTC

Don,
     Can we have the dom0_mem set to 4G instead of 512M?  So the text would
change to the following:

<snip>
Virtualization: (x86_64)
     The Red Hat Enterprise Linux virtualization kernel may not work correctly
with more than 64GB of memory.  In order to boot the virtualization kernel on
machines with greater than 64GB of physical memory installed, you may
need to add "dom0_mem=4G mem=64G" to the kernel command-line.  For example:

title Red Hat Enterprise Linux Server (2.6.18-4.el5xen)
        root (hd0,0)
        kernel /xen.gz-2.6.18-4.el5 dom0_mem=4G mem=64G
        module /vmlinuz-2.6.18-4.el5xen ro root=LABEL=/
        module /initrd-2.6.18-4.el5xen.img

</snip>

Thanks,
Chris Lalancette

Comment 11 Larry Newitt 2007-02-02 22:24:15 UTC

Chris,

One additional comment:

I have not found a way to add this configuration information during the RHEL 5 
installation.  If there is a way then please add a note explaining how to do 
this.  

If there is not, then you may want to add an additional note saying that the 
virtaulization kernel is the default kernel, so you must edit the grub menu to 
add these parameters on the system reboot which occurs during the RHEL 5 
installation.

Comment 14 Don Domingo 2007-02-08 04:20:23 UTC

already in:

redhat-release-notes-5Client-4
redhat-release-notes-5Server-4

Comment 15 Don Domingo 2007-03-14 01:35:03 UTC

this is already noted in release notes as specified. closing this item
CURRENTRELEASE.