RE: UNH Plugfest

["Rod Harrison" <rod.harrison@windriver.com>]

	Ditto to what Bob said. This question arose because we saw
implementations here at the plugfest ignoring the LUN field in
the iSCSI PDUs in favour of the SCSI CDB LUN field. Clearly this
is wrong but the spec doesn't say so, it is only implied because
all SCSI references are to SAM-2.

	- Rod

-----Original Message-----
From: owner-ips@ece.cmu.edu [mailto:owner-ips@ece.cmu.edu]On
Behalf Of
Robert D. Russell
Sent: Friday, February 15, 2002 1:39 PM
To: Julian Satran
Cc: ips@ece.cmu.edu
Subject: Re: UNH Plugfest



Julian:

> As for the question at hand - I think you did see already two
opinions,
> that I tend to agree with, that those poor souls that still
rely on the
> the CDB LUN should fix their drivers.
>
> We tried hard to avoid having to look inside the CDB all over
iSCSI (we
> don't even have to look inside to determine the length and that
was
> considered too at a point) and I don't see any good reason to
break this
> rule.

I certainly agree that the spec does not need to be changed in
any way
to accommodate this.  The thought was only that somewhere,
perhaps in
an appendix or maybe a separate document, the issue of dealing
with
legacy SCSI systems could be deal with so that everyone would do
it
the same way and thus be interoperable.  But the spec as written
is
fine, and hopefully the operating systems still using the old
SCSI
specs will be upgraded in the near future (but there will always
be
users running older systems!)

Bob Russell