From: Ron Peterson Subject: old/new ext3 compatibility Date: Thu, 19 Mar 2009 14:45:02 -0400 Message-ID: <20090319184501.GG3634@mtholyoke.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-ext4@vger.kernel.org Return-path: Received: from depot.mtholyoke.edu ([138.110.1.83]:46411 "EHLO depot.mtholyoke.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752052AbZCSTDo (ORCPT ); Thu, 19 Mar 2009 15:03:44 -0400 Received: from ice.mtholyoke.edu (ice.mtholyoke.edu [138.110.1.25]) by depot.mtholyoke.edu (8.13.8/8.13.8/Debian-3) with ESMTP id n2JIj310013729 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Thu, 19 Mar 2009 14:45:08 -0400 Received: from chip.mtholyoke.edu (chip.mtholyoke.edu [138.110.1.70]) by ice.mtholyoke.edu (8.13.4/8.13.4/Debian-3sarge3) with ESMTP id n2JIj2M2004523 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Thu, 19 Mar 2009 14:45:03 -0400 Received: from chip.mtholyoke.edu (rpeterso@localhost [127.0.0.1]) by chip.mtholyoke.edu (8.13.8/8.13.8/Debian-3) with ESMTP id n2JIj2iV020229 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Thu, 19 Mar 2009 14:45:02 -0400 Received: (from rpeterso@localhost) by chip.mtholyoke.edu (8.13.8/8.13.8/Submit) id n2JIj2AR020165 for linux-ext4@vger.kernel.org; Thu, 19 Mar 2009 14:45:02 -0400 Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: As I understand it, debian lenny's ext3 filesystem uses 256 byte inodes, to be forward compatible with ext4. I have a production server running debian etch. It is attached to a fiber channel array, on which it has several ext3 filesystems. I'm installing a new server, and I'd like to use lenny. It will be attached to the same array, and I'd like to be able to occasionally use the ext3 filesystems created previously. Ideally, I'd also like to go the other direction as well. Is this possible, or just crazy talk? TIA -- Ron Peterson Network & Systems Manager Mount Holyoke College http://www.mtholyoke.edu/~rpeterso facebook: http://tinyurl.com/d63r5c