Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422725AbXAHUJP (ORCPT ); Mon, 8 Jan 2007 15:09:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422724AbXAHUJP (ORCPT ); Mon, 8 Jan 2007 15:09:15 -0500 Received: from cs.columbia.edu ([128.59.16.20]:49514 "EHLO cs.columbia.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422722AbXAHUJO (ORCPT ); Mon, 8 Jan 2007 15:09:14 -0500 Date: Mon, 8 Jan 2007 14:43:39 -0500 (EST) From: Shaya Potter To: Andrew Morton cc: "Josef 'Jeff' Sipek" , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, hch@infradead.org, viro@ftp.linux.org.uk, torvalds@osdl.org, mhalcrow@us.ibm.com, David Quigley , Erez Zadok Subject: Re: [PATCH 01/24] Unionfs: Documentation In-Reply-To: <20070108111852.ee156a90.akpm@osdl.org> Message-ID: References: <1168229596580-git-send-email-jsipek@cs.sunysb.edu> <1168229596875-git-send-email-jsipek@cs.sunysb.edu> <20070108111852.ee156a90.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-PerlMx-Spam: Gauge=IIIIIII, Probability=7%, X-Seen-By filter2.cs.columbia.edu Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 974 Lines: 23 On Mon, 8 Jan 2007, Andrew Morton wrote: > On Sun, 7 Jan 2007 23:12:53 -0500 > "Josef 'Jeff' Sipek" wrote: > >> +Modifying a Unionfs branch directly, while the union is mounted, is >> +currently unsupported. > > Does this mean that if I have /a/b/ and /c/d/ unionised under /mnt/union, I > am not allowed to alter anything under /a/b/ and /c/d/? That I may only > alter stuff under /mnt/union? > > If so, that sounds like a significant limitation. haven't we been through this? It's the same thing as modifying a block device while a file system is using it. Now, when unionfs gets confused, it shouldn't oops, but would one expect ext3 to allow one to modify its backing store while its using it? - 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/