From owner-freebsd-scsi@FreeBSD.ORG Sat Feb 24 03:54:42 2007 Return-Path: X-Original-To: scsi@freebsd.org Delivered-To: freebsd-scsi@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 77C6016A40B for ; Sat, 24 Feb 2007 03:54:42 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.freebsd.org (Postfix) with ESMTP id 3D04413C4A6 for ; Sat, 24 Feb 2007 03:54:40 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from phobos.samsco.home (phobos.samsco.home [192.168.254.11]) (authenticated bits=0) by pooker.samsco.org (8.13.4/8.13.4) with ESMTP id l1O3sVoO097203; Fri, 23 Feb 2007 20:54:36 -0700 (MST) (envelope-from scottl@samsco.org) Message-ID: <45DFB6F5.9090605@samsco.org> Date: Fri, 23 Feb 2007 20:54:29 -0700 From: Scott Long User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1.2pre) Gecko/20070111 SeaMonkey/1.1 MIME-Version: 1.0 To: "M. Warner Losh" References: <20070223.203309.-1300543896.imp@bsdimp.com> In-Reply-To: <20070223.203309.-1300543896.imp@bsdimp.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (pooker.samsco.org [168.103.85.57]); Fri, 23 Feb 2007 20:54:36 -0700 (MST) X-Spam-Status: No, score=-1.4 required=3.8 tests=ALL_TRUSTED autolearn=failed version=3.1.1 X-Spam-Checker-Version: SpamAssassin 3.1.1 (2006-03-10) on pooker.samsco.org Cc: scsi@freebsd.org Subject: Re: Another usb umass question... X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Feb 2007 03:54:42 -0000 M. Warner Losh wrote: > OK. I have another umass qustion... > > I have two external USB enclosures that I've been using... One has a > DVD burner in it and the other has a real disk in it. I've found that > I've had some issues. umass, unpatched, seems to filter out many of > the SCSI commands that I want to use to burn DVDs and/or run smartmon > for the disk. Even with the slowness in usb I see on my amd64 box, it > still seems to be a faster drive than the ata dvd burner that came > with the laptop... > > I also know that there are ISSUES with many of the thumb drives which > is why the filters are in place. > > Is there some kind of middle ground that can accomidate both uses? Is > there some automated way of detecting these two different cases? > > Warner Yes, there is a more intelligent way to handle it, but it requires breaking umass into a USB front end and various ATA, MMC, RBC, and SBC backends, and/or doing the same in CAM core. Scott