Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755814AbXFZCUd (ORCPT ); Mon, 25 Jun 2007 22:20:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752970AbXFZCUY (ORCPT ); Mon, 25 Jun 2007 22:20:24 -0400 Received: from cantor2.suse.de ([195.135.220.15]:48183 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752281AbXFZCUY (ORCPT ); Mon, 25 Jun 2007 22:20:24 -0400 From: Neil Brown To: Graeme Sheppard Date: Tue, 26 Jun 2007 12:20:07 +1000 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18048.30679.872740.744997@notabene.brown> Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: Patent or not patent a new idea In-Reply-To: message from Graeme Sheppard on Tuesday June 26 References: <46803772.7020408@rillion.net> <46806CCB.6020708@rillion.net> X-Mailer: VM 7.19 under Emacs 21.4.1 X-face: [Gw_3E*Gng}4rRrKRYotwlE?.2|**#s9D Posting it here seems the best thing to do. > > To the inventor goes naming privilege and I'm calling this one softer raid. > It is a form of storage raid implemented in software, as contrasted to > software and hardware raid which are dependent on using required hardware. > > To create a loop filesystem is straight forward. The commands are dd, > mkfs.*, mount -o loop. Basically what I propose is that the image file is > copied to another harddisk (in the case of ide not on the same cable) and > it too is mounted in conjunction of the original with cooperation. When a > read request for a block of say 100k is made, the kernel pulls 50k from > each disk - maybe a simple doubling of throughput. Sounds a lot like "RAIF" - ask google for details. NeilBrown - 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/