From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikolai Joukov Subject: Re: [ANNOUNCE] RAIF: Redundant Array of Independent Filesystems Date: Fri, 15 Dec 2006 15:11:49 -0500 (EST) Message-ID: References: <200612150747.02708.edt@aei.ca> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org Return-path: Received: from sbcs.cs.sunysb.edu ([130.245.1.15]:63487 "EHLO sbcs.cs.sunysb.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753379AbWLOULw (ORCPT ); Fri, 15 Dec 2006 15:11:52 -0500 To: Ed Tomlinson In-Reply-To: <200612150747.02708.edt@aei.ca> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org > On Wednesday 13 December 2006 12:47, Nikolai Joukov wrote: > > We have designed a new stackable file system that we called RAIF: > > Redundant Array of Independent Filesystems > > Do you have a function similar to an an EMC cloneset? Basicily a cloneset > tracks what has changed in both the source and target luns (drives). When one > updates the cloneset the target is made identical to the source. Its a great > way to do backups. Its an important feature to be able to write to the target drives. > I would love to see this working at a filesystem level. Well, if you mount RAIF over your file system and a for-backups file system, RAIF can replicate the files on both of them automatically. I guess that's what you need. Nikolai. --------------------- Nikolai Joukov, Ph.D. Filesystems and Storage Laboratory Stony Brook University