From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932319AbWGDWfo (ORCPT ); Tue, 4 Jul 2006 18:35:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932325AbWGDWfo (ORCPT ); Tue, 4 Jul 2006 18:35:44 -0400 Received: from frankvm.xs4all.nl ([80.126.170.174]:58248 "EHLO janus.localdomain") by vger.kernel.org with ESMTP id S932319AbWGDWfo (ORCPT ); Tue, 4 Jul 2006 18:35:44 -0400 Date: Wed, 5 Jul 2006 00:35:42 +0200 From: Frank van Maarseveen To: "Jeff V. Merkey" Cc: Arjan van de Ven , Tomasz Torcz , Helge Hafting , Thomas Glanzmann , "Theodore Ts'o" , LKML Subject: Re: ext4 features Message-ID: <20060704223542.GA16828@janus> References: <20060701163301.GB24570@cip.informatik.uni-erlangen.de> <20060701170729.GB8763@irc.pl> <20060701174716.GC24570@cip.informatik.uni-erlangen.de> <20060701181702.GC8763@irc.pl> <20060703202219.GA9707@aitel.hist.no> <20060703205523.GA17122@irc.pl> <1151960503.3108.55.camel@laptopd505.fenrus.org> <44A9904F.7060207@wolfmountaingroup.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44A9904F.7060207@wolfmountaingroup.com> User-Agent: Mutt/1.4.1i X-Subliminal-Message: Use Linux! Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 03, 2006 at 03:46:55PM -0600, Jeff V. Merkey wrote: [...] > Add a salvagable file system to ext4, i.e. when a file is deleted, you > just rename it and move it to a directory called DELETED.SAV and recycle > the files as people allocate new ones. Easy to do (internal "mv" of > file to another directory) and modification of the allocation bitmaps. > Very simple and will pay off big. If you need help designing it, just > ask me. Do you have any idea how to undo the effect of rm -rf /bigtree at the FS level? I think such an "undelete" feature should be implemented in userspace. A filesystem which can travel back in time could be useful however. -- Frank