From owner-freebsd-scsi Tue Feb 11 11:25:56 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id LAA12210 for freebsd-scsi-outgoing; Tue, 11 Feb 1997 11:25:56 -0800 (PST) Received: from Sisyphos.MI.Uni-Koeln.DE (Sisyphos.MI.Uni-Koeln.DE [134.95.212.10]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id LAA12199 for ; Tue, 11 Feb 1997 11:25:51 -0800 (PST) Received: from x14.mi.uni-koeln.de (annexr3-17.slip.Uni-Koeln.DE) by Sisyphos.MI.Uni-Koeln.DE with SMTP id AA16414 (5.67b/IDA-1.5 for ); Tue, 11 Feb 1997 20:25:38 +0100 Received: (from se@localhost) by x14.mi.uni-koeln.de (8.8.5/8.6.9) id UAA22459; Tue, 11 Feb 1997 20:24:56 +0100 (CET) Message-Id: <19970211202335.YC36261@x14.mi.uni-koeln.de> Date: Tue, 11 Feb 1997 20:23:35 +0100 From: se@freebsd.org (Stefan Esser) To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) Cc: robsch@robkaos.ruhr.de (Robert Schien), freebsd-scsi@freebsd.org Subject: Re: Problem with 3701B CD-ROM References: X-Mailer: Mutt 0.60-PL0 Mime-Version: 1.0 In-Reply-To: ; from J Wunsch on Feb 11, 1997 01:51:20 +0100 Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Feb 11, j@uriah.heep.sax.de (J Wunsch) wrote: > As Robert Schien wrote: > > > /kernel: cd0 at scbus0 target 2 lun 0: COMMAND FAILED (9 0) @f20ba800. > > /kernel: cd0 at scbus0 target 2 lun 0: extraneous data discarded. > > > > The errors disappear when the kernel option FAILSAFE is set. > > That would mean they don't grok tagged queuing. Like just about any CDROM drive on the market today :) I've never had a single problem with my Toshiba 3601, and I think the error is caused by some application sending an invalid request. What program did access the CDROM drive at that time ? > When reviewing Mark Gourney's (sp?) various SCSI-related section 9 > manpages, i learned that we support quirk entries for drives that > don't grok tagged commands. Perhaps we should start populating > scsiconf.c with entries for ``known rogues''. Well, I did the "NEW_SCSICONF" changes back in September 1994, in part to move some of the code that dealt with buggy devices out of the NCR driver. No driver (writer) took notice, even after you made the new code the default (in December 1995). Justin Gibbs' new generic SCSI code will take care of tagged commands, and I suggest to just wait for him to complete his interfaces, before any driver is modified ... Regards, STefan