From owner-freebsd-questions@FreeBSD.ORG Thu May 28 09:16:22 2015 Return-Path: Delivered-To: freebsd-questions@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 F19C0B6 for ; Thu, 28 May 2015 09:16:22 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: from mail-wg0-x233.google.com (mail-wg0-x233.google.com [IPv6:2a00:1450:400c:c00::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 84B3EA5A for ; Thu, 28 May 2015 09:16:22 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: by wgme6 with SMTP id e6so30698833wgm.2 for ; Thu, 28 May 2015 02:16:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=kW9ip6Q1R9Dj/36IG7zKi7apjlzCwQV44S51Vbqqr7A=; b=EHxgV7Bq7pnNKeQj0m6bfdePmTi6Af8u+b1Qr6cUfw5tgk+WuV/DVX8GzoOA/QnVrd 33mtSXwwrVYKGpYa067J9ZXBZ9ufMxC1ofGBmXBrGbmNI9RQLOl0zy9pu94be/tPmq4z l9LusSF5uRUVrMT8Sd72FrYVnCFyDnMrxRGTckyFioJDXivX6H5yko9h1l3zjY4qAAVS uk7Egw+eL9kETeTwR2nH+hssNMOHGLd5p/vurWaCZEIT33vdqyORjG0iPv1XFvkLM0ft ukkjs+dX6dHwXOXbs7kfN5HmT6r3+SWm8Mz5oZq+u/Oc8cTts7i0uuD42aupkqOPXkGV Bdrw== MIME-Version: 1.0 X-Received: by 10.180.19.100 with SMTP id d4mr57047149wie.95.1432804580953; Thu, 28 May 2015 02:16:20 -0700 (PDT) Received: by 10.28.210.149 with HTTP; Thu, 28 May 2015 02:16:20 -0700 (PDT) In-Reply-To: <55662C35.4000802@radel.com> References: <5563939F.2070303@columbus.rr.com> <86oal8gu30.fsf@red.stonehenge.com> <5563A6E0.4010402@columbus.rr.com> <86382kgoi8.fsf@red.stonehenge.com> <20150526030812.8e749982.freebsd@edvax.de> <20150526034748.GA1674@WorkBox.Home> <5564E1CE.2040700@columbus.rr.com> <5564E6F5.1090306@radel.com> <5564EF07.2080603@columbus.rr.com> <20150527000713.GA3257@WorkBox.Home> <55661AA5.9030403@columbus.rr.com> <55662C35.4000802@radel.com> Date: Thu, 28 May 2015 10:16:20 +0100 Message-ID: Subject: Re: FreeBSD 10.1 + ZFS From: krad To: Jon Radel Cc: Baho Utot , FreeBSD Questions Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 May 2015 09:16:23 -0000 Yep it should work but is rather pointless, as a 3 way mirror would be far simpler and probably better performing On 27 May 2015 at 21:42, Jon Radel wrote: > On 5/27/15 3:27 PM, Baho Utot wrote: > >> >> I do understand how ZFS works I am using it (ZFS RAID-Z1) on three boxen >> but not as the root file system. >> >> >> > >> >> You cannot do RAID-Z2 with three drives only as RAID-Z2 has two parity >> drives >> > You either contradict yourself or you have a shaky understanding of the > word "cannot". Not recommended, quite possibly not the best way to use 3 > disks, sure.... Cannot, well, not so much. > > Personally, I think this discussion might have gotten off to a much better > start if you'd started out by telling us that you couldn't use the > installer because you weren't in a position to use your entire disks; all > of which is entirely absent in your initial mail. > > Several people have now given you links to various cookbooks for doing > what I understand you want to do, or more precisely, as close as anything > published is likely to be to meeting your exact needs. Pick one and see how > it goes. I'd suggest really good backups first. > > --Jon Radel > jon@radel.com > >