From owner-freebsd-questions@FreeBSD.ORG Mon Jan 28 09:46:15 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id EC2D891C for ; Mon, 28 Jan 2013 09:46:15 +0000 (UTC) (envelope-from c.kworr@gmail.com) Received: from mail-la0-x22e.google.com (la-in-x022e.1e100.net [IPv6:2a00:1450:4010:c03::22e]) by mx1.freebsd.org (Postfix) with ESMTP id 77A3F743 for ; Mon, 28 Jan 2013 09:46:15 +0000 (UTC) Received: by mail-la0-f46.google.com with SMTP id fq12so645181lab.19 for ; Mon, 28 Jan 2013 01:46:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:user-agent:mime-version:to:cc :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=c5P3NeRBkg4HavMtDUiBPPgXckOgrRx3Fc0XmQiWN5g=; b=bygV1osRRHrVmNH5/MN+Wd1gaUAi6WT3NebkEawcysuC0y1Hca7vpzetEVdHJV9h99 xsjtIjnSKuX85LYY6bz903HC4NHTQ+09zvHPVjFQYwwQ376XMQFKBTyShYzVS9vK5++b GZcQaVgtKta0tj+R+klWY0O2L/Kn84L7tiCOact51CPqA40ZvxDOwlDvkzQkw+vIUMw0 jlPmlZYeNYqIsKFlUr0/sZyyjbZNfP7iFohMpPvXQ6xHIdkSGOiHGArIpcrnHTUT2BBm IB3vu8zRACmZbv8Eif204cUXeoc/nbvulE58c/pcJgLQFRqe2dZsAehrXedxS+ubEGcQ i5/g== X-Received: by 10.152.121.212 with SMTP id lm20mr12427614lab.42.1359366374294; Mon, 28 Jan 2013 01:46:14 -0800 (PST) Received: from [192.168.1.125] (mau.donbass.com. [92.242.127.250]) by mx.google.com with ESMTPS id ml1sm3200461lab.15.2013.01.28.01.46.13 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 28 Jan 2013 01:46:13 -0800 (PST) Message-ID: <510648E4.2080100@gmail.com> Date: Mon, 28 Jan 2013 11:46:12 +0200 From: Volodymyr Kostyrko User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:18.0) Gecko/20100101 Firefox/18.0 SeaMonkey/2.15 MIME-Version: 1.0 To: james@mansionfamily.plus.com Subject: Re: ZFS - whole disk or partition or BSD slice? References: <5105BEE4.4030402@mansionfamily.plus.com> In-Reply-To: <5105BEE4.4030402@mansionfamily.plus.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: FreeBSD Mailing List X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jan 2013 09:46:16 -0000 28.01.2013 01:57, james: > I have a 9.1 system with some SATA disks in RAIDZ, upgraded from 9.0. > > The disks are all the same type, and I formatted them for FreeBSD and > put ZFS in a slice covering most of them. > > I have seen suggestions for OpenIndiana etc that it is better to let ZFS > have the whole raw disk and that this can control the way it manages the > disk writeback mode. My home computer is set up in the dedicated mode. No grave difference. Not even a scratch. > Does this apply to FreeBSD and ZFS too? No. > Presumably the disks are currently FreeBSD-specific. If I used raw > disks instead of slices, could I read them from a Solaris system too? I'm mostly sure you would be able to read disks from Solaris/x86. However Solaris/Sparc uses another labeling scheme. If you want to be fully compatible with other system GPT is a better choice. -- Sphinx of black quartz, judge my vow.