[illumos-Developer] dgroup.tab and friends

[Andrew Gabriel]

Peter Tribble wrote:
> On Sun, Nov 14, 2010 at 6:23 PM, Andrew Gabriel
> <illumos at cucumber.demon.co.uk> wrote:
>> Garrett D'Amore wrote:
>>> I've recently been looking in some libraries (libadm, libpkg, etc.) and
>>> ran across a bunch of code for managing dgroup.tab.  I was curious.. I
>>> find some commands getdgrp, listdgrp, etc, which seem aimed at managing
>>> something called "device groups".
>>>
>>> Searching online, I found some references to this stuff in man pages,
>>> but I can't seem to find any actual examples of how this is used, or
>>> evidence that it is even useful.
>>>
>>> Does anyone here have background information?
>> It's related to Sun Cluster. I believe it's a group of devices (possibly
>> just disks) which failover as one unit, but I'm not a Sun Cluster expert.
> 
> Hm, I suspect not. It's also present in SCO and AIX at least. This looks
> like something somebody thought was a good idea for SVR4 rather than
> something specific to sun cluster. Certainly the AIX implementation looks
> like it's actually used and kept up to date, whereas the Solaris one looks
> very stale.

Yes, you're right. The Sun cluster device groups are a completely 
different set of commands.

-- 
Andrew