On 01/08/2014 07:46 AM, Scott Sullivan wrote:
> I am using QEMU/KVM, using Live Migrations like this:
>
> virsh migrate --live ${name} qemu+ssh://${DESTINATION}/system
>
> My question, running this command makes it hang in the foreground. Is
> there a way for this to return immediately, so I can just poll for the
> migration status?
Not at the moment, but it might be worth adding a 'migrate --detach'
flag for that purpose, then using job control commands to track progress
independently.
> Also, is there a way to _cancel_ a migration?
Hit Ctrl-C (or any other approach for sending SIGINT to virsh).
> I see
> the --timeout option, however if a given timeout is reached I would
> rather have the ability to cancel the migration than force the suspend.
>
> I do see there is a QEMU api migrate_cancel..eg:
>
> virsh qemu-monitor-command ${name} --pretty '{"execute":"migrate_cancel"}'
>
> Is that the only way to cancel a migration using libvirt?
That way is unsupported. The supported way (and the way used by ctrl-C
during 'virsh migrate') is to call virDomainAbortJob().
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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