[libvirt] [PATCH 5/6] allow non-zero success values from a domain's MigratePerform

[Daniel P. Berrange]

On Wed, Oct 07, 2009 at 03:52:10PM +0200, Paolo Bonzini wrote:
> 
> >In the case of old server and new client, the client should get a RPC
> >error when trying to re-serialize the reply, because the data packet
> >it will be getting back from the server will be too small (ie missing
> >the new field this patch adds).
> >
> >The RPC protocol should be considered ABI, and no existing methods
> >ever changed, only new methods can be added so NACK to this patch
> 
> I had actually prepared this patch too, but after my testing I wasn't 
> sure if it was necessary.  Would it be fine to add it to the respin?

This hack means that it would be ignoring *all* deserialization errors,
which IMHO is just as bad. This is ABI and we shouldn't try to change
it, or workaround it because it is just going to cause pain somewhere
down the line

Daniel
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