From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263811AbTLJRpo (ORCPT ); Wed, 10 Dec 2003 12:45:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263810AbTLJRpo (ORCPT ); Wed, 10 Dec 2003 12:45:44 -0500 Received: from anchor-post-34.mail.demon.net ([194.217.242.92]:10510 "EHLO anchor-post-34.mail.demon.net") by vger.kernel.org with ESMTP id S263809AbTLJRpf (ORCPT ); Wed, 10 Dec 2003 12:45:35 -0500 Message-ID: <3FD75BB0.7030001@lougher.demon.co.uk> Date: Wed, 10 Dec 2003 17:45:20 +0000 From: Phillip Lougher User-Agent: Mozilla/5.0 (X11; U; Linux ppc; en-GB; rv:1.2.1) Gecko/20030228 X-Accept-Language: en, en-us MIME-Version: 1.0 To: manningc2@actrix.gen.nz CC: David Woodhouse , joern@wohnheim.fh-wedel.de, kbiswas@neoscale.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [OT?]Re: partially encrypted filesystem References: <20031210010947.CA5875748@blood.actrix.co.nz> In-Reply-To: <20031210010947.CA5875748@blood.actrix.co.nz> 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 Charles Manning wrote: > On Tuesday 09 December 2003 02:44, phillip@lougher.demon.co.uk wrote: >>Or maybe 'not in(to)-place' :-) I don't think I was saying compression is >>difficult, it is not difficult if you've designed the filesystem correctly. > > > Effectively saying that a fs that can't easily support compression is badly > designed is a dangerous over-simplfication/generalisation/slur. > Apologies all round to anyone who feels offended. What I meant to say is compression is not that difficult if you design the filesystem from the outset with compression in mind - retro fitting compression to an existing filesystem, however, can be very difficult (especially compressed metadata), and that's why it's not a good idea. The concept that all well designed filesystems should easily support compression is wrong, and I didn't intend to imply that. Phillip