From owner-freebsd-hackers@FreeBSD.ORG Fri Mar 27 01:34:12 2015 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 733F2778; Fri, 27 Mar 2015 01:34:12 +0000 (UTC) Received: from ipmail05.adl6.internode.on.net (ipmail05.adl6.internode.on.net [150.101.137.143]) by mx1.freebsd.org (Postfix) with ESMTP id C7B80AD9; Fri, 27 Mar 2015 01:34:11 +0000 (UTC) Received: from ppp121-45-104-240.lns20.adl6.internode.on.net (HELO midget.dons.net.au) ([121.45.104.240]) by ipmail05.adl6.internode.on.net with ESMTP; 27 Mar 2015 12:03:54 +1030 Received: from [10.0.2.26] ([10.0.2.26]) (authenticated bits=0) by midget.dons.net.au (8.15.1/8.14.9) with ESMTPSA id t2R1XlJH084838 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 27 Mar 2015 12:03:53 +1030 (CST) (envelope-from darius@dons.net.au) Subject: Re: Seagate Archive HDD Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2070.6\)) Content-Type: text/plain; charset=us-ascii From: "O'Connor, Daniel" In-Reply-To: Date: Fri, 27 Mar 2015 12:03:47 +1030 Content-Transfer-Encoding: quoted-printable Message-Id: <882C8337-923B-40CF-A4BE-69B20B0B3DE3@dons.net.au> References: <55148E42.80708@delphij.net> <4F65B315-5FFE-4184-91FD-C05A40E0A26E@dons.net.au> <5514A133.8060409@delphij.net> <88DE4F68-B05E-4E4D-8C4A-DED8147172E7@dons.net.au> To: Adrian Chadd X-Mailer: Apple Mail (2.2070.6) X-Spam-Score: -2.9 () ALL_TRUSTED,BAYES_00 X-Scanned-By: MIMEDefang 2.75 on 10.0.2.1 Cc: "freebsd-hackers@freebsd.org" , Xin LI , Wojciech Puchar X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Mar 2015 01:34:12 -0000 > On 27 Mar 2015, at 11:28, Adrian Chadd wrote: > So - is anyone planning on working on the minimum set of stuff to > expose the write topology for these shingled disks, so experiments can > start being made? >=20 > Even just knowing the shingle size(s) for writes would be enough to do > useful amounts of work from userspace. The presentation suggests it's all hidden and there's no public way to = find it out. So like the whole 4k farrago again :( -- Daniel O'Connor "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C