From owner-freebsd-questions@FreeBSD.ORG Mon Mar 30 14:25:49 2009 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 65EBB1065670 for ; Mon, 30 Mar 2009 14:25:49 +0000 (UTC) (envelope-from psteele@maxiscale.com) Received: from exprod7og118.obsmtp.com (exprod7og118.obsmtp.com [64.18.2.8]) by mx1.freebsd.org (Postfix) with SMTP id 16DE88FC22 for ; Mon, 30 Mar 2009 14:25:48 +0000 (UTC) (envelope-from psteele@maxiscale.com) Received: from source ([209.85.198.227]) by exprod7ob118.postini.com ([64.18.6.12]) with SMTP ID DSNKSdDWbHaqehm5/iU9ZGnXkP0wRMTOicxw@postini.com; Mon, 30 Mar 2009 07:25:49 PDT Received: by rv-out-0506.google.com with SMTP id b25so2962165rvf.55 for ; Mon, 30 Mar 2009 07:25:48 -0700 (PDT) Received: by 10.141.4.20 with SMTP id g20mr2869780rvi.173.1238423148449; Mon, 30 Mar 2009 07:25:48 -0700 (PDT) Received: from localhost ([76.231.178.131]) by mx.google.com with ESMTPS id g22sm13838862rvb.53.2009.03.30.07.25.47 (version=SSLv3 cipher=RC4-MD5); Mon, 30 Mar 2009 07:25:48 -0700 (PDT) Date: Mon, 30 Mar 2009 07:24:44 -0700 (PDT) From: Peter Steele To: freebsd-questions@freebsd.org Message-ID: <22962697.1201238423082526.JavaMail.HALO$@halo> In-Reply-To: <19133613.1181238422813543.JavaMail.HALO$@halo> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: USB disk support patches? 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: Mon, 30 Mar 2009 14:25:49 -0000 We've found that FreeBSD 7.0's support for USB disks is pretty unstable. We have a process that creates a bootable FreeBSD 7.0 image on a USB disk and this requires writing a fairly large amount of data in one shot to the USB drive. We've found that there is probably less than a 50% chance of this actually working. More often than not, the write process hangs up and the system has to be rebooted to recover from that state it is in. Are there any patches available that improve the reliability of this kind of mass writing to USB drives. We don't seem to have as much of an issue with reading. Once we've created one of our bootable disks for example we can boot our systems with them and they seem to work fine. The failures occur when a lot of data is being streamed to a USB disk. Any suggestions would be appreciated.