From owner-freebsd-questions Thu Dec 29 18:11:45 1994 Return-Path: questions-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id SAA10159 for questions-outgoing; Thu, 29 Dec 1994 18:11:45 -0800 Received: from hda.com (hda.com [199.232.40.182]) by freefall.cdrom.com (8.6.9/8.6.6) with ESMTP id SAA10152 for ; Thu, 29 Dec 1994 18:11:42 -0800 Received: (dufault@localhost) by hda.com (8.6.9/8.3) id UAA23786; Thu, 29 Dec 1994 20:59:45 -0500 From: Peter Dufault Message-Id: <199412300159.UAA23786@hda.com> Subject: Re: Bernoulli drives and FreeBSD? To: terry@cs.weber.edu (Terry Lambert) Date: Thu, 29 Dec 1994 20:59:44 -0500 (EST) Cc: MULHOLLENJ@cpva.saic.com, freebsd-questions@freefall.cdrom.com In-Reply-To: <9412291749.AA08372@cs.weber.edu> from "Terry Lambert" at Dec 29, 94 10:49:31 am X-Mailer: ELM [version 2.4 PL24] Content-Type: text Content-Length: 1350 Sender: questions-owner@freebsd.org Precedence: bulk Terry Lambert writes: > > Formatting is a problem... > > (1) I don't thing we support formatting of SCSI devices I have a program to format and I'll work on getting it into 2.1 > > (2) If we did, the Bernoulli drives *lie* and say they are done > formatting immediately. A correct implementation would > have them ack the format *after* they were in a state to > accept further SCSI commands. I've seen problems with a > Kawai synthesizer that uses removable SCSI media for patches > and so on, whereas it worked fine with a Syquest. There must be something you can ask it to see if it is done and then write a special Bernoulli format. How does it respond to a Test Unit Ready while it is formatting? > > (3) The Bernoulli dual drives show up as LUN 0 and 1 on the > same SCSI device. This is a potential problem -- I don't > think all the SCSI drivers for BSD have been tested to make > sure they all work with LUN's. I'll bet it is OK. I worked with multiple LUNs quite a bit with 1.1 and we ironed out a few problems and the LUN handling is done at a level shared across the drivers. -- Peter Dufault Real Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267 -- Formerly hd@world.std.com. E-mail problems? Tell hdslip@iii.net