From owner-freebsd-scsi@FreeBSD.ORG  Mon May  9 00:37:05 2011
Return-Path: <owner-freebsd-scsi@FreeBSD.ORG>
Delivered-To: freebsd-scsi@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 8320E106566C
	for <freebsd-scsi@freebsd.org>; Mon,  9 May 2011 00:37:05 +0000 (UTC)
	(envelope-from mj@feral.com)
Received: from ns1.feral.com (ns1.feral.com [192.67.166.1])
	by mx1.freebsd.org (Postfix) with ESMTP id 4EADF8FC0A
	for <freebsd-scsi@freebsd.org>; Mon,  9 May 2011 00:37:05 +0000 (UTC)
Received: from [192.168.135.100] (c-76-126-155-117.hsd1.ca.comcast.net
	[76.126.155.117]) (authenticated bits=0)
	by ns1.feral.com (8.14.4/8.14.4) with ESMTP id p490b3Mg070189
	(version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO)
	for <freebsd-scsi@freebsd.org>; Sun, 8 May 2011 17:37:04 -0700 (PDT)
	(envelope-from mj@feral.com)
Message-ID: <4DC7372F.9090204@feral.com>
Date: Sun, 08 May 2011 17:37:03 -0700
From: Matthew Jacob <mj@feral.com>
Organization: Feral Software
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US;
	rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
MIME-Version: 1.0
To: freebsd-scsi@freebsd.org
References: <alpine.BSF.2.00.1105081401080.92495@gw.reifenberger.com>	<BANLkTikGH6iDLZTztxg13qzxPiazQ5VYBA@mail.gmail.com>
	<20110508232405.GA84267@nargothrond.kdm.org>
In-Reply-To: <20110508232405.GA84267@nargothrond.kdm.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6
	(ns1.feral.com [192.67.166.1]);
	Sun, 08 May 2011 17:37:04 -0700 (PDT)
Subject: Re: mpt(4) cuts 3TiB drives down to 2TiB
X-BeenThere: freebsd-scsi@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: mj@feral.com
List-Id: SCSI subsystem <freebsd-scsi.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-scsi>,
	<mailto:freebsd-scsi-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-scsi>
List-Post: <mailto:freebsd-scsi@freebsd.org>
List-Help: <mailto:freebsd-scsi-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-scsi>,
	<mailto:freebsd-scsi-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 09 May 2011 00:37:05 -0000


> I have heard from a friend (i.e. I haven't personally confirmed) that the
> capacity truncation only applies to SATA drives.  If you attach a 3TB SAS
> drive, you should be able to see the full capacity.
>
> It makes some sense, since the LSI controller is translating SCSI to SATA,
> but for SAS drives it just passes the SCSI commands straight through to the
> drive.  So the 16 byte READ CAPACITY, READ and WRITE commands will make it
> through to SAS disks, but aren't translated for SATA disks.
>
> Ken
That's preposterous. LBA48 has been around forever and even SATL 1.0 
covered this. Shrug.