[Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts

[Anthony Liguori]

Gleb Natapov wrote:
> I am OK with management being responsible to sort things out. Juan
> said that destination can't abort migration in the middle, so I pointed
> out easy solution that will work in 99.999% cases.
>   

I think there's something elegant about doing migration in a 
unidirectional stream.  It makes live migration work to a file, to a 
qcow2 file, etc. with no protocol change.

The ack'ing bits can be done by a live migration transport since it 
happens entirely at the end of the stream.  The old ssh: migration used 
to do this and provided a simple means that worked 99.999% of the time :-)

Regards,

Anthony Liguori

> --
>                         Gleb.
>