Date: Fri, 29 May 1998 14:51:06 +0200 (CEST) From: Arne H Juul <arnej@math.ntnu.no> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/6781: exabyte changer doesn't grok LUNs Message-ID: <199805291251.OAA25573@cauchy.math.ntnu.no>
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>Number: 6781
>Category: kern
>Synopsis: exabyte changer doesn't grok LUNs
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Fri May 29 06:00:02 PDT 1998
>Last-Modified:
>Originator: Arne Henrik Juul
>Organization:
Norwegian University of Technology and Science
>Release: FreeBSD 2.2.6-STABLE i386
>Environment:
This was on a -stable kernel, with the exabyte 8mm tape+changer
on a symbios (ncr) 810 scsi adapter, in case it matters.
>Description:
Here's yet another SCSI-device that doesn't support LUNs.
The "EXABYTE EXB-10i 3.1" identified as a type 8 removable SCSI 2,
Medium-Changer 10 slots, 1 drive, 1 picker.
I got very nice and understandable errror messages, though,
and it doesn't really cause any problems. (I got lots of
"offline" changers :-)
>How-To-Repeat:
Borrow one of these antiques and connect to your FreeBSD
system.
>Fix:
It would be nice with a comment that says explicitly what
SC_SHOWME, SC_ONE_LU and SC_MORE_LUS should be used for.
I still don't understand what most of the entries in scsiconf.c
are needed for at all.
I guessed that SC_ONE_LU would inhibit probing of LUNs > 0,
and that seems to be the case. With the below patch I just
get one ch0 device and no warnings/errors during boot.
Index: src/sys/scsi/scsiconf.c
===================================================================
RCS file: /usr/cvs/src/sys/scsi/scsiconf.c,v
retrieving revision 1.64.2.26
diff -u -r1.64.2.26 scsiconf.c
--- scsiconf.c 1998/03/08 06:53:13 1.64.2.26
+++ scsiconf.c 1998/05/29 12:43:30
@@ -357,6 +357,10 @@
T_CHANGER, T_CHANGER, T_REMOV, "SONY", "TSL-7000", "*",
"ch", SC_MORE_LUS
},
+ {
+ T_CHANGER, T_CHANGER, T_REMOV, "EXABYTE", "EXB-10i", "*",
+ "ch", SC_ONE_LU
+ },
#endif /* NCH */
#if NCD > 0
#ifndef UKTEST /* make cdroms unrecognised to test the uk driver */
>Audit-Trail:
>Unformatted:
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