Re: Does "-object" support structured options now?

["Daniel P. Berrangé" <berrange@redhat.com>]

On Mon, Mar 04, 2024 at 06:43:19AM +0000, Chun Feng Wu wrote:
> Hi,
> 
> I noticed that throttle-group can be created with “-object”, however, per qemu doc(https://github.com/qemu/qemu/blob/master/docs/throttle.txt), “-object” doesn’t support structured options at that moment:
> 
> “
> A throttle-group can also be created with the -object command line
> option but at the moment there is no way to pass a 'limits' parameter
> that contains a ThrottleLimits structure. The solution is to set the
> individual values directly, like in this example:
> 
>    -object throttle-group,id=group0,x-iops-total=1000,x-bps-write=2097152
> 
> Note however that this is not a stable API (hence the 'x-' prefixes) and
> will disappear when -object gains support for structured options and
> enables use of 'limits'.
> “
> 
> Does anybody know if the latest qemu code still lacks of such
> support(structured options for -object)? If so, is there any
> plan to support it(instead of non-stable API)?

-object supports JSON syntax these days so any QAPI structure can be
expressed no matter how complex.


With regards,
Daniel
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