From owner-freebsd-fs@FreeBSD.ORG Tue May 20 02:26:48 2014 Return-Path: Delivered-To: freebsd-fs@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 EAC792EF for ; Tue, 20 May 2014 02:26:48 +0000 (UTC) Received: from smtp1.multiplay.co.uk (smtp1.multiplay.co.uk [85.236.96.35]) by mx1.freebsd.org (Postfix) with ESMTP id AD05A200E for ; Tue, 20 May 2014 02:26:47 +0000 (UTC) Received: by smtp1.multiplay.co.uk (Postfix, from userid 65534) id EA65B20E7088B; Tue, 20 May 2014 02:26:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.multiplay.co.uk X-Spam-Level: ** X-Spam-Status: No, score=2.2 required=8.0 tests=AWL,BAYES_00,DOS_OE_TO_MX, FSL_HELO_NON_FQDN_1,HELO_NO_DOMAIN,RDNS_DYNAMIC,STOX_REPLY_TYPE autolearn=no version=3.3.1 Received: from r2d2 (82-69-141-170.dsl.in-addr.zen.co.uk [82.69.141.170]) by smtp1.multiplay.co.uk (Postfix) with ESMTPS id BF86C20E70886; Tue, 20 May 2014 02:26:35 +0000 (UTC) Message-ID: From: "Steven Hartland" To: "Jeff Chan" , References: <1129127016.20140517185154@supranet.net> <1198503903.20140518030907@supranet.net> <236659679.20140518035326@supranet.net> <3E3DCC6DED864A519B02A398B92D1994@multiplay.co.uk> <1879018434.20140519191844@supranet.net> Subject: Re: ZFS snapshot restore not quite working; missing steps? Date: Tue, 20 May 2014 03:26:35 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 May 2014 02:26:49 -0000 ----- Original Message ----- From: "Jeff Chan" > Update: using the most current FreeBSD 9.0 - 9.2 ZFS instructions > on the wiki page for the initial configuration caused the booting > to ZFS to work: > > https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE > > including the GNOP trick, since these drives are "advanced format" and > greater than 2TB size, and the -a 4k alignment to 4k sectors when > creating the ZFS partitions. On later versions you can set vfs.zfs.min_auto_ashift=12 to achieve the same thing as the GNOP trick, but thats only needed if your drive doesn't have a 4k quirk in our codebase. Regards Steve