From owner-freebsd-hackers Sun Mar 1 21:46:48 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id VAA14442 for freebsd-hackers-outgoing; Sun, 1 Mar 1998 21:46:48 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id VAA14429; Sun, 1 Mar 1998 21:46:36 -0800 (PST) (envelope-from toor@dyson.iquest.net) Received: (from root@localhost) by dyson.iquest.net (8.8.8/8.8.8) id AAA04573; Mon, 2 Mar 1998 00:45:10 -0500 (EST) (envelope-from toor) From: "John S. Dyson" Message-Id: <199803020545.AAA04573@dyson.iquest.net> Subject: Re: The 'dave rivers' memorial panic. In-Reply-To: <199803020339.WAA03710@lakes.dignus.com> from Thomas David Rivers at "Mar 1, 98 10:39:27 pm" To: rivers@dignus.com (Thomas David Rivers) Date: Mon, 2 Mar 1998 00:45:10 -0500 (EST) Cc: dyson@FreeBSD.ORG, hackers@FreeBSD.ORG, hasty@rah.star-gate.com, rivers@dignus.com, tlambert@primenet.com X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Thomas David Rivers said: > > John Dyson said: > > > > Terry Lambert said: > > > > > > We thought it was a bug in fsck and in the CG code. > > > > > > It turned out to be a longer-than-functional IDE cable. > > > > > > Try using a shorter IDE cable. > > > > > Slightly off subject: > > > > Even though Ultra-DMA/33 doesn't have higher clockrates than > > 16MHz EIDE (Mode 4), it seems that the Promise controller and > > WD drives DO NOT like out-of-spec IDE cables when running > > Ultra-DMA/33. (Ultra-DMA uses both edges of the clock, so > > there can be more transitions than EIDE, and the spectrum > > will be higher in freq, also with more sensitivity to clock > > skew, due to timing constraints.) > > > > Umm... I don't know anything about this - but just a reminder; > my "memorial" panic occurs with SCSI devices.... (but, I do have > a reproduction on IDE as well.) Julian had mentioned he'd seen > reproductions on different devices - but I didn't see the particulars. > > Or, are you guys discussing something else? > Yes (re: my slightly off subject note!!!) -- John | Never try to teach a pig to sing, dyson@freebsd.org | it just makes you look stupid, jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message