[Qemu-devel] Re: [PATCH v3 0/5] Add QMP migration events

[Juan Quintela <quintela@redhat.com>]

Luiz Capitulino <lcapitulino@redhat.com> wrote:
> On Sat, 12 Jun 2010 13:20:54 +0200
> Juan Quintela <quintela@redhat.com> wrote:

>> Both.
>
>  What does it report in the source?

That migration has started :)  Nothing else, nothing less.

Think again multiple monitors and/or audit.

>> Why can't we just tell them that migration has ended with success as
>> fast as possible?
>> 
>> I can't understand what I am missing here.  I can't believe that
>> libvirt(management app in general) could came with a simple request that
>> would make its live better.  And to make things worse, it is _trivial_
>> to implement, semantics are clear, has other uses, .....
>
>  I'd be ok in having the done event if the polling is shown to be that
> problematic, but from some private talks I had with libvirt guys it seemed
> to me that it's more like a wish have.
>
>  For us, having this event means that we'll have to carry it for (at least)
> several releases. I really would like to avoid adding one-time workarounds
> in a stable interface like QMP.

For me, this is going to be there forever.  It has clear semantics, it
is useful and all other alternatives given to date are convoluted at
least.

Later, Juan.