From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: System hangs when using USB 3.0 HD with on Ubuntu Date: Fri, 16 Apr 2010 14:31:07 -0700 Message-ID: <1271453467.4751.24.camel@mulgrave.site> References: <4BBF6B2F.9060902@gmail.com> <20100409215439.GA4779@xanatos> <4BC2D049.1090606@gmail.com> <20100416182026.GA10023@xanatos> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100416182026.GA10023@xanatos> Sender: linux-hotplug-owner@vger.kernel.org To: Sarah Sharp Cc: Jonas Schwertfeger , Alan Stern , Dinh.Nguyen@freescale.com, Mark Lord , Sergei Shtylyov , Kay Sievers , David Zeuthen , linux-hotplug@vger.kernel.org, linux-usb@vger.kernel.org, USB Storage List , Matthew Dharm , linux-scsi@vger.kernel.org, Lennart Poettering , Douglas Gilbert List-Id: linux-scsi@vger.kernel.org On Fri, 2010-04-16 at 11:20 -0700, Sarah Sharp wrote: > The drive stalls on the last command, which is a valid ATA command. Can > you confirm if your device supports the SCSI ATA pass through > specification? > > http://www.t10.org/cgi-bin/ac.pl?t=f&f=sat2r09.pdf Actually, that's not a valid standard ... it's unratified. I know SCSI tends to follow leading edge (i.e. unratified) standards, but most SAT implementations have been following trailing edge ones ... in fact, very few people have been claiming even SAT (as opposed to SAT-2) compliance, so they more use it as a guideline. If you want to read the doc, you have to get it from google using this search string: +"SCSI / ATA Translation (SAT)" +"revision 09" And you'll find that citeseer still has the pdf. but like I said, most people treat it as advisory not mandatory. James