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Date: Mon, 21 May 2012 11:16:37 -0300
From: Luiz Capitulino <lcapitulino@redhat.com>
Message-ID: <20120521111637.308bdaa6@doriath.home>
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Subject: Re: [Qemu-devel] Proposal for extensions of block job commands in
 QEMU 1.2
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Kevin Wolf <kwolf@redhat.com>, aliguori@us.ibm.com, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, qemu-devel <qemu-devel@nongnu.org>, Federico Simoncelli <fsimonce@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Eric Blake <eblake@redhat.com>

On Mon, 21 May 2012 09:10:40 -0500
Anthony Liguori <anthony@codemonkey.ws> wrote:

> On 05/21/2012 08:59 AM, Luiz Capitulino wrote:
> > On Fri, 18 May 2012 19:08:42 +0200
> > Paolo Bonzini<pbonzini@redhat.com>  wrote:
> >
> >> Modified QMP commands
> >> =====================
> >
> > As we have discussed on the ML, we're not going to extend QMP commands.
> >
> > I understand your reasoning, and since the beginning I thought this was
> > something useful to do, but we've already settled for not doing this.
> >
> > I also think that we shouldn't have exceptions, as in practice this means
> > we're extending commands anyway. So either, we do it or we don't.
> 
> Well, I think we should ask ourselves the following question:
> 
> How would a client figure out if the new options are available?
> 
> This is the primary reason for not extending existing commands.

Yes, I know. But if Paolo implements schema introspection, would you
agree on extending commands.

You seemed to be against even if we had schema introspection.