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Bug 557327

Summary:	migration failed with -M rhel5.4.4 between host 5.5 and host 5.4.4
Product:	Red Hat Enterprise Linux 5	Reporter:	Miya Chen <michen>
Component:	kvm	Assignee:	Juan Quintela <quintela>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	high	Docs Contact:
Priority:	high
Version:	5.5	CC:	ehabkost, llim, syeghiay, tburke, virt-maint, ykaul
Target Milestone:	beta
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kvm-83-151.el5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-30 07:54:19 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:

Description Miya Chen 2010-01-21 02:04:49 UTC

Description of problem:
migration failed with -M rhel5.4.4 between host 5.5 and host 5.4.4

Version-Release number of selected component (if applicable):
host 5.5.0 ---kvm-83-147
host 5.4.4 ---kvm-83-105.el5.4.19


How reproducible:
100%

Steps to Reproduce:
1.start guest in host 5.4.4 with -M rhel5.4.4
# /usr/libexec/qemu-kvm -drive file=win28k-r2-ide-147.qcow2,if=ide -no-hpet -rtc-td-hack -usbdevice tablet -startdate now -smp 2 -m 2G -net nic,model=e1000,macaddr=20:20:20:11:23:12,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -cpu qemu64,+sse2 -name r2 -monitor stdio -vnc :6 -M rhel5.4.4
2.start listening mode in host 5.5 with -M rhel5.4.4
# /usr/libexec/qemu-kvm -drive file=win28k-r2-ide-147.qcow2,if=ide -no-hpet -rtc-td-hack -usbdevice tablet -startdate now -smp 2 -m 2G -net nic,model=e1000,macaddr=20:20:20:11:23:12,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -cpu qemu64,+sse2 -name r2 -monitor stdio -vnc :6 -M rhel5.4.4 -incoming tcp:0:5889
3.start migration
  
Actual results:
In dest host qemu monitor:
(qemu) Unknown savevm section type 105
load of migration failed

Expected results:


Additional info:
migration with -M rhel5.4.4 from 5.5 to 5.4.4 failed too.

Comment 1 Lawrence Lim 2010-01-23 01:11:35 UTC

Strange. I thought I updated the bug with QA-ack earlier.
Raising this as an Exception since it is one of the key features for 5.5.

Comment 2 Lawrence Lim 2010-01-23 01:17:49 UTC

During bug verification, please check if the patch fix Bug 555649.

Comment 3 Miya Chen 2010-01-26 05:25:24 UTC

After migrate from 5.5 to 5.4.4 with -M rhel5.4.4, nothing is in dest vnc screen, but it cannot get "load of migration failed...." in qemu monitor, `info status` in dest host got "running".

Comment 4 Juan Quintela 2010-01-26 13:11:19 UTC

Set patch that fixes all the migrations.

We collapsed two changes in 5.5, and then we only backport one of them to 5.4.z.

Then 5.4.4 and 5.5 have a different idea of what cpu version 8 mean.

Comment 11 errata-xmlrpc 2010-03-30 07:54:19 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