[libvirt] Allow to change the maximum migration downtime -- bug 561935

[Daniel P. Berrange]

On Fri, Jul 02, 2010 at 06:32:58AM -0400, Alex Jia wrote:
> And then running migration, and open another terminal set maximum migration 
> downtime 60000 milliseconds, the following error information is raised by
> libvirt:
> 
> 1.open one terminal run migrate
> # virsh migrate rhel6 qemu+ssh://10.66.70.152/system
> root at 10.66.70.152's password: 
> 
> 2.open another terminal set maximum migration downtime
> # virsh migrate-setmaxdowntime --domain rhel6 --downtime 60000
> error: Requested operation is not valid: domain is not being migrated
> 
> In fact, step 1 will never be finished.

This is odd. I wonder if perhaps the migrate API never even got started.
Probably need to capture debug logs from libvirtd with log_filters="1:qemu"
set.

Daniel
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