From owner-freebsd-scsi Sun Jan 25 16:08:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA04552 for freebsd-scsi-outgoing; Sun, 25 Jan 1998 16:08:15 -0800 (PST) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from bob.tri-lakes.net (BOB.tri-lakes.net [207.3.81.6]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id QAA04544 for ; Sun, 25 Jan 1998 16:08:14 -0800 (PST) (envelope-from cdillon@tri-lakes.net) Received: from [207.3.81.151] by bob.tri-lakes.net (NTMail 3.02.13) with ESMTP id da441951 for ; Sun, 25 Jan 1998 18:08:37 -0600 Message-ID: X-Mailer: XFMail 1.1 [p0] on FreeBSD Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <199801250656.XAA23323@narnia.plutotech.com> Date: Sun, 25 Jan 1998 18:04:39 -0600 (CST) From: Chris Dillon To: "Justin T. Gibbs" Subject: Re: Minor annoyances with ZIP Plus Cc: scsi@FreeBSD.ORG, Donald Burr Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 25-Jan-98 Justin T. Gibbs wrote: >> Don't worry; these errors are "normal". Well, as "normal" as Iomega SCSI >> devices get, anyway. Apparently Iomega subscribes to some "weird", >> non-standard variant of SCSI, in that their devices do not support certain >> SCSI commands mandated by the SCSI specification, specifically, those SCSI >> commansd that ask a device to specify its geometry (size, # >> heads/sectors/etc.). When presented with this anomalous behavior, the >> FreeBSD driver guesses the device's geometry, and so everything still >> works. > >This isn't the case. FreeBSD was being silly in asking for the optional, >rigid geometry page, which the IOMega guys chose not to implement. Since >FreeBSD stopped using physical geometry to "optimize" disk I/O (which >doesn't work on the ZBR drives of today), asking for the rigid geometry >wasn't buying us anything and the code was recently changed to use the >information returned by the Read Capacity command instead. Just how recently was this? :-) If within the last couple of days in stable, i'll compile a new kernel and see how I fare. If its only in current, i'll just have to put up with the errors for now, i guess (i'm feeling adventurous enough to try current, though). --- Chris Dillon --- cdillon@tri-lakes.net --- Powered by FreeBSD, the best operating system on the planet for Intel x86 based computers. ---- (http://www.freebsd.org)