From owner-freebsd-fs Fri Oct 16 12:58:49 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA28305 for freebsd-fs-outgoing; Fri, 16 Oct 1998 12:58:49 -0700 (PDT) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from smtp01.primenet.com (smtp01.primenet.com [206.165.6.131]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA28285; Fri, 16 Oct 1998 12:58:41 -0700 (PDT) (envelope-from tlambert@usr04.primenet.com) Received: (from daemon@localhost) by smtp01.primenet.com (8.8.8/8.8.8) id MAA21313; Fri, 16 Oct 1998 12:58:22 -0700 (MST) Received: from usr04.primenet.com(206.165.6.204) via SMTP by smtp01.primenet.com, id smtpd021284; Fri Oct 16 12:58:18 1998 Received: (from tlambert@localhost) by usr04.primenet.com (8.8.5/8.8.5) id MAA24426; Fri, 16 Oct 1998 12:58:17 -0700 (MST) From: Terry Lambert Message-Id: <199810161958.MAA24426@usr04.primenet.com> Subject: Re: filesystem safety and SCSI disk write caching To: dkelly@hiwaay.net (David Kelly) Date: Fri, 16 Oct 1998 19:58:17 +0000 (GMT) Cc: tlambert@primenet.com, freebsd-fs@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG In-Reply-To: <199810161109.GAA16802@nospam.hiwaay.net> from "David Kelly" at Oct 16, 98 06:09:15 am X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Why not? It might be interesting to put a recording voltmeter such as a > digital storage oscilloscope on the HD power leads when Don is punching > the reset. No telling what kind of voltage surges are generated when > the load on the power supply is altered. > > No telling *if* there are changes in the PS load when reset is punched > either. Think my PPro-166 CPU pulls 10A. If it suddenly stops pulling > that much current when RESET is active then what does the PS do? The errors seen are a result of uncommitted data in the drive cache, not power spikes and gremlins. The interaction is well understood, and on firm footing unrelated to Stephan King novels. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message