Bug 805800 - migration support for vcpu hotplug
Summary: migration support for vcpu hotplug
Keywords:
Status: CLOSED WORKSFORME
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm
Version: 6.3
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Virtualization Maintenance
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-03-22 07:41 UTC by Shaolong Hu
Modified: 2012-03-22 08:20 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-03-22 08:20:57 UTC
Target Upstream Version:

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Description Shaolong Hu 2012-03-22 07:41:24 UTC 
Description of problem:
------------------------
currently vcpu hotplug + migration fails.

Version-Release number of selected component (if applicable):
--------------------------------------------------------------
qemu-kvm-0.12.1.2-2.253.el6rhev.x86_64

How reproducible:
------------------
100%

Steps to Reproduce:
--------------------
1.boot guest with "-smp 2,maxcpus=4"
2.in qemu monitor hotplug 1 vcpu
3.boot guest on des with "-smp 2,maxcpus=4"
4.migrate
  
Actual results:
-----------------
(qemu) Unknown savevm section or instance 'cpu_common' 2
load of migration failed

Expected results:
------------------
migration succeeds.
Comment 2 Shaolong Hu 2012-03-22 07:56:20 UTC 
src with ""-smp 2,maxcpus=4", hotplug 1 vcpu, then migrate to des with "-smp 3" works.
Comment 3 Shaolong Hu 2012-03-22 08:20:57 UTC 
after talking with libvirt guy, this is handled by libvirt correctly, close it.
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