From owner-freebsd-questions@FreeBSD.ORG Tue Aug 19 14:43:27 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 22EEF1065673 for ; Tue, 19 Aug 2008 14:43:27 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (wonkity.com [67.158.26.137]) by mx1.freebsd.org (Postfix) with ESMTP id D8D1B8FC13 for ; Tue, 19 Aug 2008 14:43:21 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (localhost [127.0.0.1]) by wonkity.com (8.14.2/8.14.2) with ESMTP id m7JEhKoe077270; Tue, 19 Aug 2008 08:43:20 -0600 (MDT) (envelope-from wblock@wonkity.com) Received: from localhost (wblock@localhost) by wonkity.com (8.14.2/8.14.2/Submit) with ESMTP id m7JEhJMC077267; Tue, 19 Aug 2008 08:43:19 -0600 (MDT) (envelope-from wblock@wonkity.com) Date: Tue, 19 Aug 2008 08:43:19 -0600 (MDT) From: Warren Block To: Jeffrey Goldberg In-Reply-To: <37D65ECB-A87E-4949-ABF8-33249DA31D80@goldmark.org> Message-ID: References: <48A85276.7070306@highperformance.net> <20080818000858.D21615@wojtek.tensor.gdynia.pl> <48A8C40E.2060802@highperformance.net> <37D65ECB-A87E-4949-ABF8-33249DA31D80@goldmark.org> User-Agent: Alpine 1.10 (BSF 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (wonkity.com [127.0.0.1]); Tue, 19 Aug 2008 08:43:20 -0600 (MDT) Cc: Wojciech Puchar , "Jason C. Wells" , freebsd general questions 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: Tue, 19 Aug 2008 14:43:27 -0000 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. Usually the > failure is much sooner. This was with 7.0-RELEASE. I haven't checked since > I've moved to 7-STABLE. > > I have another system (identical software, different hardware) which is solid > as a rock with the identical USB drive 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. -Warren Block * Rapid City, South Dakota USA