From owner-freebsd-current@FreeBSD.ORG Fri Apr 9 11:33:58 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6C2D1106564A for ; Fri, 9 Apr 2010 11:33:58 +0000 (UTC) (envelope-from me@lexasoft.ru) Received: from relay.wahome.ru (relay.wahome.ru [95.211.21.141]) by mx1.freebsd.org (Postfix) with ESMTP id 29EC48FC22 for ; Fri, 9 Apr 2010 11:33:57 +0000 (UTC) Received: from mmx.lexasoft.ru (mmx.lexasoft.ru [92.241.160.6]) by relay.wahome.ru (Postfix) with ESMTP id 2187C6B2206; Fri, 9 Apr 2010 15:31:00 +0400 (MSD) Received: from [10.100.0.2] (petrovich-telecom-gw.wahome.ru [77.91.225.38]) by mmx.lexasoft.ru (Postfix) with ESMTPSA id 96FCF2848C; Fri, 9 Apr 2010 15:33:56 +0400 (MSD) Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: text/plain; charset=utf-8 From: Alexey Tarasov In-Reply-To: <4BBF1033.5030409@icyb.net.ua> Date: Fri, 9 Apr 2010 15:33:55 +0400 Content-Transfer-Encoding: quoted-printable Message-Id: <5D7D5FDB-8BF7-4FE6-919A-5C5E7B8784F5@lexasoft.ru> References: <1A417529-F467-4411-970A-3FF41080AC61@lexasoft.ru> <868w8yukuy.fsf@ds4.des.no> <6313EB8E-D3DA-459F-A372-0E871359FA1C@lexasoft.ru> <86zl1et4rv.fsf@ds4.des.no> <86mxxet437.fsf@ds4.des.no> <86eiiqt3kp.fsf@ds4.des.no> <846676C4-C1B8-44DB-AA01-B664614DE59F@lexasoft.ru> <20100408172421.62d73a90@ernst.jennejohn.org> <4BBDF7D3.3050300@andric.com> <4BBE4032.3030806@andric.com> <539094C7-278A-4674-8A06-E8BAF8F29E58@lexasoft.ru> <4BBF0D36.8050900@icyb.net.ua> <4BBF1033.5030409@icyb.net.ua> To: Andriy Gapon , freebsd-current@freebsd.org X-Mailer: Apple Mail (2.1077) Cc: Alexey Tarasov Subject: Re: gpart and sector size X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Apr 2010 11:33:58 -0000 On 09.04.2010, at 15:32, Andriy Gapon wrote: > on 09/04/2010 14:27 Alexey Tarasov said the following: >>> Or the disk doesn't actually report 4096 anywhere anyhow... Have = you >>> considered that? If yes, can you verify using any tools of any OS = that the >>> disk reports 4K in any way? >>=20 >> In the previous discussion we found that the disk reports 512 sector = size, but >> there are additional ATA commands to determine if it has real sector = size >> larger than 4k. I will try to confirm this. >=20 > Thank you. I think that this would be an interesting detail. >=20 Here is the reference: http://www.wdc.com/wdproducts/library/WhitePapers/ENG/2579-771430.pdf > References > The ATA8-ACS and SBC-3 standards have provisions for a disk drive to = report Advanced Format sector sizes and other performance optimization = information. These standards are used for SATA, SAS, USB, and IEEE 1394 = based interface technologies. -- Alexey Tarasov (\__/)=20 (=3D'.'=3D)=20 E[: | | | | :]=D0=97=20 (")_(")