* Alexey (aluka...@alukardd.org) wrote:
> Hello.

Hi,

> I have two servers between which I need have live migration.
> 
> First server have QEMU emulator version 2.3.0
> Second server have QEMU emulator version 2.5.0
> 
> Migration command look like this:
> /usr/bin/virsh migrate --live DOMAIN_NAME --migrateuri tcp://second.server
> qemu+ssh://second.server/system --verbose
> 
> I got next error on console:
> error: operation failed: migration job: unexpectedly failed
> 
> And next error in log on second server:
> 2016-01-11T15:07:12.888647Z qemu-system-x86_64: Length too large:
> /rom@genroms/efi-virtio.rom: 0x32000 > 0x2d000: Invalid argument
> 2016-01-11T15:07:12.888685Z qemu-system-x86_64: error while loading state
> for instance 0x0 of device 'ram'
> 2016-01-11T15:07:12.889733Z qemu-system-x86_64: load of migration failed:
> Invalid argument
> 
> In my libvirt domain I have option <rom bar="off"/>.
> 
> I need to do a live migration in any possible way. How can I do this one?

Is the efi-virtio ROM that you're using on the two versions the same identical 
size?
Also, can you post the commandline that you're using please.

Dave

> 
> Thanks,
> Alexey Mochkin.
> 
--
Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK

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