From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: Patent or not patent a new idea Date: Tue, 26 Jun 2007 12:20:07 +1000 Message-ID: <18048.30679.872740.744997@notabene.brown> References: <46803772.7020408@rillion.net> <46806CCB.6020708@rillion.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org To: Graeme Sheppard Return-path: 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 In-Reply-To: message from Graeme Sheppard on Tuesday June 26 Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Tuesday June 26, nodes@rillion.net wrote: > 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