From owner-freebsd-hackers@FreeBSD.ORG Sun Jun 1 15:29:04 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9691F349 for ; Sun, 1 Jun 2014 15:29:04 +0000 (UTC) Received: from i3mail.icecube.wisc.edu (i3mail.icecube.wisc.edu [128.104.255.23]) by mx1.freebsd.org (Postfix) with ESMTP id 686722578 for ; Sun, 1 Jun 2014 15:29:04 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by i3mail.icecube.wisc.edu (Postfix) with ESMTP id 39E393806E for ; Sun, 1 Jun 2014 10:29:01 -0500 (CDT) X-Virus-Scanned: amavisd-new at icecube.wisc.edu Received: from i3mail.icecube.wisc.edu ([127.0.0.1]) by localhost (i3mail.icecube.wisc.edu [127.0.0.1]) (amavisd-new, port 10030) with ESMTP id VoMiQIwKmfiI for ; Sun, 1 Jun 2014 10:29:01 -0500 (CDT) Received: from comporellon.tachypleus.net (polaris.tachypleus.net [75.101.50.44]) by i3mail.icecube.wisc.edu (Postfix) with ESMTPSA id E88533806B for ; Sun, 1 Jun 2014 10:29:00 -0500 (CDT) Message-ID: <538B46BB.9010008@freebsd.org> Date: Sun, 01 Jun 2014 08:28:59 -0700 From: Nathan Whitehorn User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: freebsd-hackers@freebsd.org Subject: Re: fdisk(8) vs gpart(8), and gnop References: <20140601004242.GA97224@bewilderbeast.blackhelicopters.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Jun 2014 15:29:04 -0000 On 06/01/14 07:59, Mark Felder wrote: > On May 31, 2014, at 20:57, Freddie Cash wrote: > >> There's a sysctl where you can set the minimum ashift for zfs. Then you >> never need to use gnop. >> >> I believe it's part of 10.0? > I've not seen this yet. What we need is to port the ability to set ashift at pool creation time: > > $ zpool create -o ashift=12 tank mirror disk1 disk2 mirror disk3 disk4 > > I believe the Linux zfs port has this functionality now, but we still do not. > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" > ashift=12 seems harmless on 512-byte disks, so maybe also making that the default globally unless sector size is even larger is a good idea. -Nathan