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From: obrien@cs.ucdavis.edu (David E. O'Brien)
Message-Id: <9601052321.AA20148@toadflax.cs.ucdavis.edu>
Subject: Re: LUN support.
To: hackers@freebsd.org
Date: Fri, 5 Jan 1996 15:21:57 -0800 (PST)
In-Reply-To: <199601051935.LAA26123@freefall.freebsd.org> from "Justin T. Gibbs" at Jan 5, 96 11:35:07 am
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> 
> >
> >
> >Does FreeBSD have support for LUN's?
> 
> Luns are supported in the generic SCSI code, but I believe that
> some drivers do not fully support LUNs.  If you have a device that
> requires probing on multiple luns, you will have to add a "rogue"
> entry in your kernel to force the probe.  Too many devices get
> confused when you probe beyond LUN0 that it was disabled by
> default.

For the aha (Adaptec 1542) device, it isn't nessciary to add anything to
the kernel for probeing of LUN's.  This is how my CDROM changer works,
with a virgin FreeBSD 2.1.0 install.  Infact this kind of support cost a
previous employer $750 for each Sun (for the custom driver) we would
every want to move the CDROM changer to.  ==> Go FreeBSD!

-- David   (obrien@cs.ucdavis.edu)