Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261439AbUDSQ4z (ORCPT ); Mon, 19 Apr 2004 12:56:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261389AbUDSQ4z (ORCPT ); Mon, 19 Apr 2004 12:56:55 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:11150 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261528AbUDSQ4b (ORCPT ); Mon, 19 Apr 2004 12:56:31 -0400 Message-ID: <408404B2.30602@pobox.com> Date: Mon, 19 Apr 2004 12:56:18 -0400 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Henrik Gustafsson CC: linux-kernel@vger.kernel.org Subject: Re: poor sata performance on 2.6 References: <200404150236.05894.kos@supportwizard.com> <1082001287.407e0787f3c48@webmail.LaTech.edu> <200404151455.36307.kos@supportwizard.com> <1082044297.407eaf894ddda@webmail.LaTech.edu> <407F1C07.6050104@umn.edu> <407F30F5.1070305@pobox.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 961 Lines: 27 Henrik Gustafsson wrote: > [cut] > >> I _really_ like the SX4 -- it gives the programmer full control over >> all aspects of RAID operation, while providing useful hardware >> acceleration where it's needed. And not getting in the way of the >> programmer, when it's not needed. > > > Does this mean that the hardware-accelerated RAID5-mode will be > compatible with soft-RAID5? So that I am able to create a RAID5-array > today and get all the goodies from hardware-support later without having > to do the backup - recreate-array - restore dance? Who knows. It depends on the XOR algorithm block size and such. I _think_ XOR'ing is compatible, but have not tested to verify that assertion. Jeff - 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/