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On 11 August 2014 21:03, Dean Troyer <dtroyer at gmail.com> wrote:
> On Mon, Aug 11, 2014 at 5:34 PM, Duncan Thomas <duncan.thomas at gmail.com>
> wrote:
>>
>> Making an previously mandatory parameter optional, at least on the
>> command line, does break backward compatibility though, does it?
>> Everything that worked before will still work.
>
>
> By itself, maybe that is ok.  You're right, nothing _should_ break.  But
> then the following is legal:
>
> cinder create
>
> What does that do?

It returns an error. The following becomes legal though:

cinder create --src-volume aaa-bbb-ccc-ddd

cinder create --snapshot aaa-bbb-ccc-ddd

cinder create --image aaa-bbb-ccc-ddd


-- 
Duncan Thomas