[ovirt-users] Live migration qemu 2.1.2 -> 2.1.3: Unknown savevm section

[Markus Stockhausen]

> Von: Markus Stockhausen
> Gesendet: Freitag, 10. April 2015 20:51
> An: users at ovirt.org
> Betreff: Live migration qemu 2.1.2 -> 2.1.3: Unknown savevm section
> 
> Hi,
> 
> don't know what will be the best place for the following question. 
> So starting with the OVirt mailing list. 
> 
> We are using OVirt with FC20 nodes with enabled virt-preview.
> Thus we are running qemu 2.1.2. Everything is working smoothly 
> including live merge.  
> 
> For testing purposes we compiled qemu 2.1.3 from Fedora koji
> and updated one of the hosts. Trying to migrate a running VM to
> the new host fails with the message
> 
> Unknown savevm section or instance 'kvm-tpr-opt' 0
> 
> I guess some incompatibility between the versions. But qemu git
> history between 2.1.2 and 2.1.3 gives no hints about the reason.
> 
> Any ideas - or is that migration scenario not supported at all?

The qemu venom vulnerability put me back to the topic. Just in case
someone is interested. The following patch breaks live migration
between 2.1.2 and 2.1.3.

pc: Fix disabling of vapic for compat PC models
http://git.qemu.org/?p=qemu.git;a=commit;h=8100812711ea480119f9796bd6c0895e6ac85d0f

I dropped this one during rebuild and now everything works fine again.

Markus
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