[Libvir] Questions about the future of libvirt

[Anthony Liguori]

David Anderson wrote:
> This layout does not scale well, especially if the plan is to
> introduce support for other virtualization engines.  So, I'd like to
> propose implementing a vtable-based interface.  We define a structure
> of all the callback functions a backend can/must provide.  Then, the
> open functions, depending on the URI passed in, will initialize a
> certain backend and let it populate the vtable with its callbacks.
>   
I think this is a sane thing to do.  My personal preference would be 
something more akin to how Linux handles this sort of things.  Function 
pointers in an otherwise opaque type and backend "modules" that register 
themselves.  We could eventually get to a place where hypervisors were 
supported just by adding plugins.  

Regards,

Anthony Liguori
> - Dave, going back to preparing his remote-xend patch.
>