[7968] in linux-scsi channel archive
Re: Skipping LUN 0?
daemon@ATHENA.MIT.EDU (Mark Veteikis)
Fri Jan 28 16:39:45 2000
From: Mark Veteikis <mark@iphase.com>
Message-Id: <200001281610.KAA17595@sw10.Iphase.COM>
To: eric@andante.org (Eric Youngdale)
Date: Fri, 28 Jan 2000 10:10:17 -0600 (CST)
Cc: casler_heather@emc.com (casler heather),
linux-scsi@vger.rutgers.edu ('linux-scsi')
In-Reply-To: <001d01bf6950$38262f70$2017a8c0@eric.home> from "Eric Youngdale" at Jan 28, 2000 12:13:50 AM
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>
> I see why it is not proceeding with the LUN scan if there is no logical
> unit 0. The thing I cannot tell is why someone decided to do this. It
> looks like this bit here:
> > I'm still learning and am doing some testing with Linux (v2.2.9 -
> v2.2.14),
> > a few different HBAs (AHA-2944UW, NCR, QLA2100F, QLA2200F) and an external
> > storage device. One of the tests I was attempting to do was to see how
> the
> > host would react if LUN 0 were skipped. The storage was set up with 0,1
> > through 0,3 then 2,0 through 2,3 and 4,0 through 4,3. The device 0,1
> > through 0,3 were NOT seen, but all of the following devices were seen by
> the
> > host.
> > Is this reaction appropriate? If the kernel doesn't support skipping LUN
> 0,
Okay, from my reading of the old SCSI-2 specification final draft.
"Each target has one or more logical units, beginning with logical unit 0."
To me this implies that if there is MORE than one logical unit, the
first logical unit must be 0.
--
Mark Veteikis mark@iphase.com 1-214-654-5257
Interphase Corp. 13800 Senlac Dallas Tx. 75234
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