From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f174.google.com ([74.125.82.174]:55505 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755529Ab2JVRoT (ORCPT ); Mon, 22 Oct 2012 13:44:19 -0400 Received: by mail-we0-f174.google.com with SMTP id t9so1572773wey.19 for ; Mon, 22 Oct 2012 10:44:18 -0700 (PDT) Message-ID: <508585ED.2010909@gmail.com> Date: Mon, 22 Oct 2012 19:44:13 +0200 From: Andreas Philipp MIME-Version: 1.0 To: Hugo Mills CC: linux-btrfs Subject: Re: RAID 5/6 References: <20121022160500.GZ25498@carfax.org.uk> In-Reply-To: <20121022160500.GZ25498@carfax.org.uk> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 10/22/2012 06:05 PM, Hugo Mills wrote: > On Mon, Oct 22, 2012 at 10:58:07AM -0500, Michael wrote: >> Does anyone know when RAID 5/6 are planned to be included in the >> Kernel? > > This is in the FAQ: > > https://btrfs.wiki.kernel.org/index.php/FAQ#Can_I_use_RAID.5B56.5D_on_my_Btrfs_filesystem.3F > > Short answer: Not yet, probably soon. > >> I am starting to buy parts for my next computer and would very >> much like to use BTRFS because I want a FS that can grow and also >> recover from undetected read errors - it will be large enough that >> these are possible. I'm hoping that it will be available for use in >> the coming months. > > You can switch storage types on the fly, so you could at least > start with RAID-1, and then restripe to RAID-5 (or -6) when it's > stable enough for you. This assumes that you can manage to use RAID-1 > in the first place and expand later. If you can live without redundancy at the beginning, you could also start with RAID-0, and then restripe to RAID-5. Andreas