Bug 805800 - migration support for vcpu hotplug
migration support for vcpu hotplug
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm (Show other bugs)
Unspecified Unspecified
medium Severity medium
: rc
: ---
Assigned To: Virtualization Maintenance
Virtualization Bugs
Depends On:
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Reported: 2012-03-22 03:41 EDT by Shaolong Hu
Modified: 2012-03-22 04:20 EDT (History)
6 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2012-03-22 04:20:57 EDT
Type: ---
Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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

Version-Release number of selected component (if applicable):

How reproducible:

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"
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 03:56:20 EDT
src with ""-smp 2,maxcpus=4", hotplug 1 vcpu, then migrate to des with "-smp 3" works.
Comment 3 Shaolong Hu 2012-03-22 04:20:57 EDT
after talking with libvirt guy, this is handled by libvirt correctly, close it.

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