From mboxrd@z Thu Jan 1 00:00:00 1970 From: Douglas Gilbert Subject: Re: System hangs when using USB 3.0 HD with on Ubuntu Date: Fri, 16 Apr 2010 19:56:44 -0400 Message-ID: <4BC8F93C.2050409@interlog.com> References: <4BBF6B2F.9060902@gmail.com> <20100409215439.GA4779@xanatos> <4BC2D049.1090606@gmail.com> <20100416182026.GA10023@xanatos> <1271453467.4751.24.camel@mulgrave.site> Reply-To: dgilbert@interlog.com Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1271453467.4751.24.camel@mulgrave.site> Sender: linux-hotplug-owner@vger.kernel.org To: James Bottomley Cc: Sarah Sharp , 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 List-Id: linux-scsi@vger.kernel.org James Bottomley wrote: > 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. I'm not sure why Alan is having problems downloading that document. To quote http://www.t10.org/drafts.htm : "Non-T10 members will not be permitted to download working drafts for standards that have been approved." And since SAT-2 has not yet been approved then you just get a challenge screen asking who you are. It accepts "linux" in all its fields (or anything else you like) and then lets you download the draft. That may change soon because SAT-2 is queued for approval with INCITS. Not to worry, the SAT-3 project has been approved but the first draft has not yet been posted. Technical work has started on SAT-3 (e.g. there are approved changes from the last month's t10 meeting). Don't tell INCITS but existing t10 practice is that rev 0 of the following series (e.g. sat3r0.pdf) is often the same as ... Doug Gilbert