From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264881AbUHSJ6k (ORCPT ); Thu, 19 Aug 2004 05:58:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264919AbUHSJ6j (ORCPT ); Thu, 19 Aug 2004 05:58:39 -0400 Received: from stacja.kursor.pl ([80.55.191.138]:63921 "EHLO stacja.kursor.pl") by vger.kernel.org with ESMTP id S264881AbUHSJ50 (ORCPT ); Thu, 19 Aug 2004 05:57:26 -0400 Date: Thu, 19 Aug 2004 11:57:12 +0200 (CEST) From: Janusz Dziemidowicz To: Diego Calleja cc: linux-kernel@vger.kernel.org Subject: Re: [RFC] ext3 documentation (lack of) In-Reply-To: <20040818184249.5b266538.diegocg@teleline.es> Message-ID: References: <20040818025951.63c4134e.diegocg@teleline.es> <200408172301.09350.ryan@spitfire.gotdns.org> <20040818133818.7b0582f3.diegocg@teleline.es> <20040818184249.5b266538.diegocg@teleline.es> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 18 Aug 2004, Diego Calleja wrote: > Thanks. I've recollected those, explained it a bit (except the barrier bits, > I don't really mean what barriers are), and updated ext2 documentation with > some of them, and deleted a small comentary about ext3 not being available. > +user_xattr (*) Enables POSIX Extended Attributes. It's enabled by > + default, however you need to confifure its support > + (CONFIG_EXT2_FS_XATTR). This is neccesary if you want > + to use POSIX Acces Control Lists support. You can visit > + http://acl.bestbits.at to know more about POSIX Extended > + attributes. > + > +nouser_xattr Disables POSIX Extended Attributes. > + > +acl (*) Enables POSIX Access Control Lists support. This is > + enabled by default, however you need to configure > + its support (CONFIG_EXT2_FS_POSIX_ACL). If you want > + to know more about ACLs visit http://acl.bestbits.at > + > +noacl This option disables POSIX Access Control List support. Hmmm, after a quick look on source code one more clarification. Since 2.4.20 one can set default mount options in ext2/ext3 superblock using tune2fs. If user_xattr or acl is there, then they are enabled by default while mounting such filesystem. However default mount options field in superblock is by default empty, so user_xattr and acl are not enabled by default for most users. Please correct me if I'm wrong. Another thing is that a quick grep for reservation and resize options shows nothing in latest kernel. Are you sure that these options exist? For sure reiserfs has resize option. -- Janusz Dziemidowicz rraptorr@kursor.pl