[virt-tools-list] Crosspost: KVM live migrate RH6 to or from RH 5.5

[Cole Robinson]

On 12/06/2010 05:22 PM, Phil Meyer wrote:
> We have been testing live migrations of KVM clients, successfully, on 
> RHEL 5.5 and RHEL 6 separately.
> 
> We have now mixed our test environment to get a LOE converting our 
> existing servers to RHEL 6.
> 
> Not good.
> 
> Every attempt is met with:
> 
> 'error: operation failed: failed to start listening VM'
> 
> We have tried:
> 
> 5.5 to 6, initiated from 5.5 host and from 6 host.
> 
> 6 to 5.5 from 6 host and from 5.5 host.
> 
> We have also tried both ways from a third host, with no impact.
> 
> Here is a sample:
> 
> [root at pxe2 ~]# virsh -c qemu+ssh://root@testhost1.mycompany.net/system 
> migrate --live my_domain qemu+ssh://root@testhost2.mycompany.net/system
> 
> error: operation failed: failed to start listening VM
> 
> Again, this command works without fail as long as both servers are 
> running the same version.
> 
> Any ideas are appreciated.
> 
> Thanks

What is in /var/log/libvirt/qemu/$VMNAME.log on both the source and
destination? Any errors from libvirt in /var/log/messages on either
source or dest?

- Cole