On Thu, Nov 14, 2013 at 03:07:09PM +0100, Paolo Bonzini wrote: > Il 14/11/2013 14:41, Stefan Hajnoczi ha scritto: > But such a no-op streaming is valid, just like it is valid to > enable copy-on-read without a backing file. Think of a system that > starts streaming a disk as soon as the VM starts, because *if* there's a > backing file it knows it is just a template on a remote/slow filesytem. > It's easier for such a system to invoke the command even if there's no > backing file.
Since making it an error breaks the API now, let's take this patch and move on. I still think it could help users that are issuing the command incorrectly, but there's not much we can do about that now. Stefan
