From owner-freebsd-stable@FreeBSD.ORG Mon Sep 22 07:33:52 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C0DC8F35; Mon, 22 Sep 2014 07:33:52 +0000 (UTC) Received: from cu01176b.smtpx.saremail.com (cu01176b.smtpx.saremail.com [195.16.151.151]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7674CA3E; Mon, 22 Sep 2014 07:33:51 +0000 (UTC) Received: from [172.16.2.2] (izaro.sarenet.es [192.148.167.11]) by proxypop04.sare.net (Postfix) with ESMTPSA id EADD29DC919; Mon, 22 Sep 2014 09:33:42 +0200 (CEST) Subject: Re: getting to 4K disk blocks in ZFS Mime-Version: 1.0 (Apple Message framework v1283) Content-Type: text/plain; charset=us-ascii From: Borja Marcos In-Reply-To: <20140920000636.GD51285@in-addr.com> Date: Mon, 22 Sep 2014 09:33:39 +0200 Content-Transfer-Encoding: 7bit Message-Id: <1640F942-D90E-46A0-BC18-ED0B73561E6F@sarenet.es> References: <540FF3C4.6010305@ish.com.au> <54114029.3060507@FreeBSD.org> <2128347.Ah5i0RTCvp@overcee.wemm.org> <541230F1.3060402@digiware.nl> <7D0869A9-C114-4C4F-877A-3FB26AD7737D@scsiguy.com> <607F83CE25104CE09C74935BA9E26485@multiplay.co.uk> <541CBD5B.8050603@denninger.net> <20140920000636.GD51285@in-addr.com> To: Gary Palmer X-Mailer: Apple Mail (2.1283) Cc: Steven Hartland , Stable Stable , Karl Denninger X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Sep 2014 07:33:52 -0000 On Sep 20, 2014, at 2:06 AM, Gary Palmer wrote: > If I tell smartctl to ignore it's database it still says it's a 4k In my case, Samsung 840 EVO SSDs connected to a SAS backplane, pass6: ATA-9 SATA 3.x device pass6: 600.000MB/s transfers, Command Queueing Enabled protocol ATA/ATAPI-9 SATA 3.x device model Samsung SSD 840 EVO 1TB firmware revision EXT0BB0Q serial number S1D9NEADA08556K WWN 50025388500ae92b cylinders 16383 heads 16 sectors/track 63 sector size logical 512, physical 512, offset 0 LBA supported 268435455 sectors LBA48 supported 1953525168 sectors PIO supported PIO4 DMA supported WDMA2 UDMA6 media RPM non-rotating even though it has a 4K quirk da6 at mpr0 bus 0 scbus0 target 30 lun 0 da6: Fixed Direct Access SCSI-6 device da6: Serial Number S1D9NEADA08556K da6: 600.000MB/s transfers da6: Command Queueing enabled da6: 953869MB (1953525168 512 byte sectors: 255H 63S/T 121601C) da6: quirks=0x8<4K> smartctl reports the same, 512 logical/physical smartctl 6.3 2014-07-26 r3976 [FreeBSD 10.1-BETA1 amd64] (local build) Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Samsung based SSDs Device Model: Samsung SSD 840 EVO 1TB Serial Number: S1D9NEADA08556K LU WWN Device Id: 5 002538 8500ae92b Firmware Version: EXT0BB0Q User Capacity: 1,000,204,886,016 bytes [1.00 TB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4c SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Mon Sep 22 09:34:24 2014 CEST SMART support is: Available - device has SMART capability. SMART support is: Enabled AAM feature is: Unavailable APM feature is: Unavailable Rd look-ahead is: Enabled Write cache is: Enabled ATA Security is: Disabled, NOT FROZEN [SEC1]