Bug 541731

Summary:	kvm: migration: mechanism to make older savevm versions to be emitted on some cases
Product:	Red Hat Enterprise Linux 5	Reporter:	Eduardo Habkost <ehabkost>
Component:	kvm	Assignee:	Juan Quintela <quintela>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	high
Version:	5.5	CC:	cpelland, llim, summer, tburke, virt-maint, ykaul
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kvm-83-142.el5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-30 07:54:13 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:	527722
Bug Blocks:	541921, 542665, 552529

Description Eduardo Habkost 2009-11-26 21:16:48 UTC

To support migration from hosts that have additiona savevm fields (e.g. containing the fix to #531701) to hosts that don't have it, we need a mechanism to force the savevm code to use an older version.

The current proposal is to use the -M option to tie savevm versions to specific machine-types.

Comment 1 Dor Laor 2009-11-30 13:47:58 UTC

For all rhel5.4.* incarnations, we'll always use -M rhel5.4 as a default, unless instructed differently by mgmt.

So, newer vdsm/libvirt should start using rhel5.4.x for newer VMs, otherwise ATM pvclock will drift.

Comment 11 errata-xmlrpc 2010-03-30 07:54:13 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-2010-0271.html