[chef] [0.8 >> 0.9] Upgrade ohai attributes to "automatic_attrs" category

[Jonathan Matthews < >]

Ohai all -

http://www.opscode.com/blog/2010/06/20/chef-0-9-0-and-ohai-0-5-6-released/
mentions a namespace change to ohai attributes: "We’ve also moved
attributes from ohai into a special “automatic_attrs” category" and
that one should "see the 'upgrading' section below for more details"
on how to "run a migration on your existing nodes to purge ohai data
from the normal node attributes".  Unless I'm losing my marbles I
can't see anything relevant in the "upgrading" section, nor in the
rest of that announcement, nor in
http://wiki.opscode.com/display/chef/Attributes.

Could anyone provide a pointer to any documentation or explanation of
this migration/purging?

Many thanks,
Jonathan

-- 
Jonathan Matthews
London, UK
http://www.jpluscplusm.com/contact.html