On 12/06/10 - 03:22:51PM, 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:
> 
> [r...@pxe2 ~]# virsh -c
> qemu+ssh://r...@testhost1.mycompany.net/system migrate --live
> my_domain qemu+ssh://r...@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.

Yes, as Justin mentioned, this is very, very difficult to implement and test,
and hence we have declared it unsupported.

-- 
Chris Lalancette

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