From owner-freebsd-scsi Sat Feb 8 03:21:44 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id DAA06502 for freebsd-scsi-outgoing; Sat, 8 Feb 1997 03:21:44 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id DAA06497 for ; Sat, 8 Feb 1997 03:21:41 -0800 (PST) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id MAA24566; Sat, 8 Feb 1997 12:21:37 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.6.9) id MAA25737; Sat, 8 Feb 1997 12:19:37 +0100 (MET) Message-ID: Date: Sat, 8 Feb 1997 12:19:37 +0100 From: j@uriah.heep.sax.de (J Wunsch) To: K.R.Marshall@ukc.ac.uk (K.R.Marshall) Cc: scsi@freebsd.org Subject: Re: Nakamichi 4-disk changers References: X-Mailer: Mutt 0.55-PL10 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: ; from K.R.Marshall on Feb 7, 1997 13:44:38 +0000 Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As K.R.Marshall wrote: > Anyhow, I had to add the following lines to scsiconf.c - I hope this diff > is useable - I'm not too experienced at such things. It is relative to > 3.0-SNAP of 18/01 but it should be easy enough to adapt for other releases > too I think. Thanks, i'll include it. > This server won't go online for a couple of weeks so if anyone wants me to > test out CD-ROM changer code I'll be happy to oblige. I've got a Nakamichi 7-disk changer here for testing. The biggest problem i found (after fixing the ``Logical unit is in the process of becoming ready'' problem) is that the drives are likely to go thrashing on concurrent access, since the kernel doesn't lock one medium in a device for long enough, so the drives will finally be very busy constantly swapping their media. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)