From owner-freebsd-questions@FreeBSD.ORG Sun Sep 7 23:49:30 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BE8301065672 for ; Sun, 7 Sep 2008 23:49:30 +0000 (UTC) (envelope-from jeffrey@goldmark.org) Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by mx1.freebsd.org (Postfix) with ESMTP id 93DE78FC29 for ; Sun, 7 Sep 2008 23:49:30 +0000 (UTC) (envelope-from jeffrey@goldmark.org) Received: from compute2.internal (compute2.internal [10.202.2.42]) by out1.messagingengine.com (Postfix) with ESMTP id AEBEE15D6B9 for ; Sun, 7 Sep 2008 19:49:29 -0400 (EDT) Received: from heartbeat2.messagingengine.com ([10.202.2.161]) by compute2.internal (MEProxy); Sun, 07 Sep 2008 19:49:29 -0400 X-Sasl-enc: dKV0ayKn3vMxwOZ3IM1VEaHz+kRKolmUVia6QVWUyT9p 1220831369 Received: from hagrid.ewd.goldmark.org (n114.ewd.goldmark.org [72.64.118.114]) by mail.messagingengine.com (Postfix) with ESMTPSA id 5E9AE3CF0C for ; Sun, 7 Sep 2008 19:49:29 -0400 (EDT) Message-Id: <8C475BB7-ACF1-417C-8684-5C2DC336BC8E@goldmark.org> From: Jeffrey Goldberg To: FreeBSD Questions In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v928.1) Date: Sun, 7 Sep 2008 18:49:27 -0500 References: <48A85276.7070306@highperformance.net> <20080818000858.D21615@wojtek.tensor.gdynia.pl> <48A8C40E.2060802@highperformance.net> <37D65ECB-A87E-4949-ABF8-33249DA31D80@goldmark.org> X-Mailer: Apple Mail (2.928.1) Subject: Re: USB Drive Reliability X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 Sep 2008 23:49:30 -0000 On Aug 19, 2008, at 9:43 AM, Warren Block wrote: > On Mon, 18 Aug 2008, Jeffrey Goldberg wrote: > >> I have one system (7.0) which becomes extremely unstable if I have >> a USB drive connected. I usually get a system crash in 10 to 30 >> minutes after mounting the USB drive. It has never crashed without >> the USB drive attached, and it has never gone for more than three >> days with it attached. [...] >> Unfortunately, the crashing system is a small form machine and >> there is no way to put in a different USB controller. The USB >> drive was for backups, which I now do over the network to the >> machine that is working just fine. > > That might indicate a cable problem, even just being too long. A > line-powered hub added between a problematic USB card reader and > computer fixed an unreliable situation here. Unfortunately that hasn't solved the problem. Cheers, -j -- Jeffrey Goldberg http://www.goldmark.org/jeff/