Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 3 Jun 2002 10:56:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 3 Jun 2002 10:56:08 -0400 Received: from twilight.ucw.cz ([195.39.74.230]:30609 "EHLO twilight.ucw.cz") by vger.kernel.org with ESMTP id ; Mon, 3 Jun 2002 10:56:06 -0400 Date: Mon, 3 Jun 2002 16:55:49 +0200 From: Vojtech Pavlik To: Kasper Dupont Cc: Vojtech Pavlik , Derek Vadala , Roy Sigurd Karlsbakk , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, Tedd Hansen , Christian Vik , Lars Christian Nygaard Subject: Re: RAID-6 support in kernel? Message-ID: <20020603165549.A27667@ucw.cz> In-Reply-To:

<20020603113128.C13204@ucw.cz> <3CFB82A0.EB2062AE@daimi.au.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 03, 2002 at 04:52:16PM +0200, Kasper Dupont wrote: > > He was thinking "mirror", not "stripe". Mirror of 2 RAID-5 arrays (would > > be probably called RAID-15 (when there is a RAID-10 for mirrored stripe > > arrays)), can withstand any two disks failing anytime. > > It can actually withstand any *three* disks failing anytime. Yes, you're right. > > Even more for > > certain combinations. But it is terribly inefficient. -- Vojtech Pavlik SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/