Re: [Qemu-devel] [Qemu-ppc] [libvirt] [PATCH 1/2] numa: deprecate 'mem' parameter of '-numa node' option

[Igor Mammedov <imammedo@redhat.com>]

On Mon, 4 Mar 2019 09:11:19 +0100
Thomas Huth <thuth@redhat.com> wrote:

> On 01/03/2019 18.48, Daniel P. Berrangé wrote:
> [...]
> > So I think this patch has to be dropped & replaced with one that
> > simply documents that memdev syntax is preferred.  
> 
> That's definitely not enough. I've had a couple of cases already where
> we documented that certain options should not be used anymore, and
> people simply ignored it (aka. if it ain't broken, don't do any change).
> Then they just started to complain when I really tried to remove the
> option after the deprecation period.

> So Igor, if you can not officially deprecate these things here yet, you
> should at least make sure that they can not be used with new machine
> types anymore. Then, after a couple of years, when we feel sure that
> there are only some few or no people left who still use it with the old
> machine types, we can start to discuss the deprecation process again, I
> think.
Is it acceptable to silently disable CLI options (even if they are broken
like in this case) for new machine types?
I was under impression that it should go through deprecation first.

> 
>  Thomas
>