Re: [PATCH 2/9] qapi: Mark unstable QMP parts with feature 'unstable'

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Am 29.10.2021 um 15:07 hat Eric Blake geschrieben:
> On Mon, Oct 25, 2021 at 07:25:25AM +0200, Markus Armbruster wrote:
> > Add special feature 'unstable' everywhere the name starts with 'x-',
> > except for InputBarrierProperties member x-origin and
> > MemoryBackendProperties member x-use-canonical-path-for-ramblock-id,
> > because these two are actually stable.
> > 
> > Signed-off-by: Markus Armbruster <armbru@xxxxxxxxxx>
> > ---
> > @@ -2495,27 +2508,57 @@
> >  #
> >  # Properties for throttle-group objects.
> >  #
> > -# The options starting with x- are aliases for the same key without x- in
> > -# the @limits object. As indicated by the x- prefix, this is not a stable
> > -# interface and may be removed or changed incompatibly in the future. Use
> > -# @limits for a supported stable interface.
> > -#
> >  # @limits: limits to apply for this throttle group
> >  #
> > +# Features:
> > +# @unstable: All members starting with x- are aliases for the same key
> > +#            without x- in the @limits object.  This is not a stable
> > +#            interface and may be removed or changed incompatibly in
> > +#            the future.  Use @limits for a supported stable
> > +#            interface.
> > +#
> >  # Since: 2.11
> >  ##
> >  { 'struct': 'ThrottleGroupProperties',
> >    'data': { '*limits': 'ThrottleLimits',
> > -            '*x-iops-total' : 'int', '*x-iops-total-max' : 'int',
> 
> > +            '*x-iops-total': { 'type': 'int',
> > +                               'features': [ 'unstable' ] },
> 
> This struct has been around since 381bd74 (v6.0); but was not listed
> as deprecated at the time.  Do we still need it in 6.2, or have we
> gone enough release cycles with the saner naming without x- that we
> could drop this?  But that is a question independent of this patch.

There is no reason any more to use the x- options, and I think libvirt
never used them anyway.

I actually have a commit in my QAPI object branch that removes these
properties, but I think it still broke some tests.

Anyway, something for a separate patch.

Kevin




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