On Tue, Dec 27, 2011 at 9:34 PM, Nico Williams <n...@cryptonector.com>wrote:

> On Tue, Dec 27, 2011 at 8:44 PM, Frank Cusack <fr...@linetwo.net> wrote:
> > So with a de facto fork (illumos) now in place, is it possible that two
> > zpools will report the same version yet be incompatible across
> > implementations?
> Not likely: the Illumos community has developed a method for managing
> ZFS extensions in a way other than linear chronology.
> Nico
I'm not sure that answer is helpful.  If they aren't revving the ID when
features are added, how exactly is someone supposed to know the feature
status of their release?  I know they were trying to compartmentalize
features, but feature number is the quickest and easiest way to
differentiate functionality.  If you have to filter through a list of
potentially hundreds of features to determine compatibility, that's going
to be a nightmare long-term (which is why most products use a version
number in the first place).

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