[Qemu-devel] Re: block: format vs. protocol, and how they stack

[Avi Kivity]

On 06/18/2010 03:59 PM, Markus Armbruster wrote:
> The code is pretty confused about format vs. protocol, and so are we.
> Let's try to figure them out.
>
>  From cruising altitude, all this format, protocol, stacking business
> doesn't matter.  We provide a bunch of arguments, and get an image.
>
> If you look more closely, providing that image involves sub-tasks.  One
> is to haul bits.  Another one is to translate between bits in different
> formats.
>
> Working hypothesis:
>
> * A protocol hauls image bits.  Examples: file, host_device, nbd.
>
> * A format translates image formats.  Examples: raw, qcow2.
>
>    

Is there a reason to make the distinction?  Is there a reason to expose 
the distinction to the user?

--
error compiling committee.c: too many arguments to function