On Thu, Jun 25, 2009 at 3:45 PM, <shlomo.swidler@gmail.com> wrote:
3. Similar to #2, but more generally: how can I, the OCCI consumer, know a-priori (without actually doing it) whether the drive that results from "image"ing an existing drive will be linkable (mountable) to my compute resources? Because some providers may produce a full-fledged drive as a result, and some may produce an unmountable "snapshot". Or, put even more generally, is there some meta-information I can probe at the OCCI API level to discover the noun/verb/attribute combinations that are supported by a particular implementation?
We do advertise verbs (e.g. start, stop, restart) via links, and if you do something like a clone you'll discover the clone via the Location: header, but the premise that you can link anything to anything is useful I think (in the worst case you can throw an error). I started thinking about attributes (e.g. state=ready vs state=offline) but then you need rules which is not particularly RESTful... categories are another option (e.g. a "mountable" category or similar). Sam