Messages in this thread |  | | Date | Sun, 11 Jan 1998 22:40:46 -0800 | | From | "Leonard N. Zubkoff" <> | | | Subject | Re: devfs |
From: Michael Neuffer <neuffer@goofy.zdv.Uni-Mainz.de>
Date: Sun, 11 Jan 1998 11:08:34 +0100 (MET)
> 256 LUN's per SCSI ID? Gosh! 2.0.33 has 7 or 8 or 32 (depending on the
> driver).
Yes, that is indeed too high. There are 3 bit defined for this.
32 LUNs are actually used in practice in some installations, so limiting our
device numbers is not really a good idea. 3 bit LUNs are only allowed in the
CDB itself, but there are 6 bits actually available in the IDENTIFY message.
I seem to recall that one of the newer SCSI specifications actually allows 8
bits for LUN, but that doesn't apply to parallel SCSI.
Leonard
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