From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964925AbWEBQkw (ORCPT ); Tue, 2 May 2006 12:40:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964924AbWEBQkw (ORCPT ); Tue, 2 May 2006 12:40:52 -0400 Received: from [212.33.180.75] ([212.33.180.75]:63750 "EHLO raad.intranet") by vger.kernel.org with ESMTP id S964922AbWEBQkw (ORCPT ); Tue, 2 May 2006 12:40:52 -0400 From: Al Boldi To: NeilBrown Subject: Re: [PATCH 009 of 11] md: Support stripe/offset mode in raid10 Date: Tue, 2 May 2006 19:38:45 +0300 User-Agent: KMail/1.5 Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton References: <20060501152229.18367.patches@notabene> <1060501053054.23009@suse.de> In-Reply-To: <1060501053054.23009@suse.de> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="windows-1256" Content-Transfer-Encoding: 7bit Message-Id: <200605021938.45254.a1426z@gawab.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org NeilBrown wrote: > The "industry standard" DDF format allows for a stripe/offset layout > where data is duplicated on different stripes. e.g. > > A B C D > D A B C > E F G H > H E F G > > (columns are drives, rows are stripes, LETTERS are chunks of data). Presumably, this is the case for --layout=f2 ? If so, would --layout=f4 result in a 4-mirror/striped array? Also, would it be possible to have a staged write-back mechanism across multiple stripes? Thanks! -- Al