On 09/16/2015 05:18 AM, Markus Armbruster wrote:

>>>>>>> Perhaps it could be as simple as
>>>>>>>
>>>>>>>     { 'struct': 'BlockdevOptionsNBD',
>>>>>>>       'data': { 'addr: 'SocketAddress', 'export': 'str' } }
>>>>>>
>>>>>> The problem is that: NBD doesn't use the fd.
>>>>>
>>>>> Is that fundamental, or just a matter of implementation?
>>>
>>> Question still open.
> 
> Question still open.

Dan's patches didn't address it...

> Long term, I'd like to see us get rid of the conversions between
> QAPI-generated types and QDict / QemuOpts.
> 
> Short term, you need to co-evolve the QDict-based code such as
> nbd_config() with the QAPI interfaces.

...but DO affect the short-term, by starting the conversion over to
using the QAPI type more fully:
https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg04383.html

> 
> Keeping the QAPI interface clean is more important than minimizing the
> implementation work, because we're free to mess with the implementation,
> but releasing a QAPI interface makes it ABI, so we better get it right.

Especially once the QAPI interface is actually used by a QMP command
(there are places where we are using qapi internally for ease in command
line handling, but not exposing the structures through QMP yet).

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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