Bug 542665 - backward migration ability should be requested to qemu-kvm when needed
Summary: backward migration ability should be requested to qemu-kvm when needed
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: libvirt
Version: 5.4.z
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Daniel Veillard
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 541731
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-11-30 13:46 UTC by Dor Laor
Modified: 2013-01-09 22:05 UTC (History)
11 users (show)

Fixed In Version: libvirt-0.6.3-31.el5
Doc Type: Bug Fix
Doc Text:
Clone Of: 541921
Environment:
Last Closed: 2010-03-30 08:10:13 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
details (3.66 KB, text/plain)
2010-01-29 08:39 UTC, Alex Jia
no flags Details


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2010:0205 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2010-03-29 12:27:37 UTC

Description Dor Laor 2009-11-30 13:46:54 UTC
+++ This bug was initially created as a clone of Bug #541921 +++

This bug is for the changes needed on the management layer to allow "backward migration", when the newer version of KVM has fixes that make the savevm format incompatible with previous versions (e.g. the fix for bug 531701).

KVM will be changed to allow an older savevm version to be requested, by using the machine-type argument to define the savevm version (Bug #541731), and VDSM (and maybe the higher layers) need to be able to use that feature when there is the need to allow backward migration.

--- Additional comment from dlaor on 2009-11-30 08:44:46 EDT ---

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

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

---
The exact similar implementation is needed in libvirt.

Comment 2 Jiri Denemark 2010-01-28 16:17:56 UTC
Fix built in libvirt-0.6.3-31.el5

Comment 4 Alex Jia 2010-01-29 08:38:37 UTC
This bug has been fixed with libvirt-0.6.3-31.el5 on rhel5u5,set the bug status
to VERIFIED.(see the attachment)

Comment 5 Alex Jia 2010-01-29 08:39:24 UTC
Created attachment 387526 [details]
details

Comment 8 errata-xmlrpc 2010-03-30 08:10:13 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/RHBA-2010-0205.html


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