From owner-freebsd-current@freebsd.org Thu May 26 14:16:41 2016 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9BA3CB4B9F2 for ; Thu, 26 May 2016 14:16:41 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mailman.ysv.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 848B21685 for ; Thu, 26 May 2016 14:16:41 +0000 (UTC) (envelope-from ken@kdm.org) Received: by mailman.ysv.freebsd.org (Postfix) id 83F1EB4B9F1; Thu, 26 May 2016 14:16:41 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 83A10B4B9F0 for ; Thu, 26 May 2016 14:16:41 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (mithlond.kdm.org [96.89.93.250]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "A1-33714", Issuer "A1-33714" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 469191684 for ; Thu, 26 May 2016 14:16:40 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (localhost [127.0.0.1]) by mithlond.kdm.org (8.15.2/8.14.9) with ESMTPS id u4QEGclK003773 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 26 May 2016 10:16:39 -0400 (EDT) (envelope-from ken@mithlond.kdm.org) Received: (from ken@localhost) by mithlond.kdm.org (8.15.2/8.14.9/Submit) id u4QEGccD003772; Thu, 26 May 2016 10:16:38 -0400 (EDT) (envelope-from ken) Date: Thu, 26 May 2016 10:16:38 -0400 From: "Kenneth D. Merry" To: Igor Mozolevsky Cc: Gary Jennejohn , current Subject: Re: Recognizing SMR HDDs Message-ID: <20160526141638.GB3640@mithlond.kdm.org> References: <20160526084253.6588938f@ernst.home> <20160526123445.GA2105@mithlond.kdm.org> <20160526152921.1c91f61a@ernst.home> <20160526134120.GA3146@mithlond.kdm.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mithlond.kdm.org [127.0.0.1]); Thu, 26 May 2016 10:16:39 -0400 (EDT) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS autolearn=ham autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mithlond.kdm.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 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: Thu, 26 May 2016 14:16:41 -0000 On Thu, May 26, 2016 at 15:02:24 +0100, Igor Mozolevsky wrote: > On 26 May 2016 at 14:41, Kenneth D. Merry wrote: > > > On Thu, May 26, 2016 at 15:29:21 +0200, Gary Jennejohn wrote: > > > On Thu, 26 May 2016 08:34:45 -0400 > > > "Kenneth D. Merry" wrote: > > > > > > > On Thu, May 26, 2016 at 08:42:53 +0200, Gary Jennejohn wrote: > > > > What kind of drive is it? > > > > > > > > > > ST8000AS 0002-1NA17Z 0X03 > > > > [snip] > > > > Yes. There is something slightly odd about the Inquiry data you pasted > > above. Seagate didn't set the bits in the ATA identify data to mark it as > > a Drive Managed drive, so I put in a quirk entry to mark it as Drive > > Managed. > > > > Unfortunately with Drive Managed drives that is really all you know. You > > don't know the zone boundaries or states. But, it is useful to know that > > you really should write sequentially for good performance. (True of any > > drive, but especially true with SMR drives.) > > > > The drive is supposed to have Word 69 set to 0x0001 and support ZAC MGMT > IN/OUT - > http://www.seagate.com/www-content/product-content/hdd-fam/seagate-archive-hdd/en-us/docs/100795782a.pdf > at pg. 24 and 28. That is a different drive. He has ST8000AS0002, which is a Drive Managed drive. The doc above is for ST8000AS0022, which is a Host Aware drive. > Incidentally AR17 firmware is a new batch, perhaps Seagate did what they > did with -DL003 drives where the early models reported 512n sector size (so > as not to confuse computers) and the later models properly reported 4kn > sector size? Yes, AR17 is the latest firmware. He really needs to upgrade, there are bugs with older versions. AR17 firmware reports the same thing in terms of sector size. For instance, from one of mine: rotocol ATA/ATAPI-9 SATA 3.x device model ST8000AS0002-1NA17Z firmware revision AR17 serial number Z8409926 WWN 5000c50086f84017 cylinders 16383 heads 16 sectors/track 63 sector size logical 512, physical 4096, offset 0 LBA supported 268435455 sectors LBA48 supported 15628053168 sectors PIO supported PIO4 DMA supported WDMA2 UDMA6 media RPM 5980 Ken -- Kenneth Merry ken@FreeBSD.ORG