Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262075AbVELQna (ORCPT ); Thu, 12 May 2005 12:43:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262076AbVELQna (ORCPT ); Thu, 12 May 2005 12:43:30 -0400 Received: from mail.uni-ulm.de ([134.60.1.1]:21490 "EHLO mail.uni-ulm.de") by vger.kernel.org with ESMTP id S262075AbVELQn2 (ORCPT ); Thu, 12 May 2005 12:43:28 -0400 Date: Thu, 12 May 2005 18:44:13 +0200 From: Markus Klotzbuecher To: =?iso-8859-1?Q?J=F6rn?= Engel Cc: linux-kernel@vger.kernel.org Subject: Re: [ANNOUNCE] mini_fo-0.6.0 overlay file system Message-ID: <20050512164413.GA14099@mary> Mail-Followup-To: =?iso-8859-1?Q?J=F6rn?= Engel , linux-kernel@vger.kernel.org References: <20050509183135.GB27743@mary> <20050512121842.GA20388@wohnheim.fh-wedel.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20050512121842.GA20388@wohnheim.fh-wedel.de> User-Agent: Mutt/1.5.8i X-DCC-SIHOPE-DCC-3-Metrics: gemini 1085; Body=2 Fuz1=2 Fuz2=2 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 770 Lines: 19 Hi Joern, On Thu, May 12, 2005 at 02:18:42PM +0200, J?rn Engel wrote: > Just out of curiosity: how do you perform the copy-up operation? > In-kernel copies of large files are a huge problem and for union-mount > purposes, I'm clueless about how to fix things. Basically I open the source and the target file on the lower file systems for reading and writing respectively, then read and write page sized chunks of data until all has been copied. Obviously not ideal for large files, but I had no better idea so far. Markus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/