Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265850AbUAEC3J (ORCPT ); Sun, 4 Jan 2004 21:29:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265849AbUAEC3J (ORCPT ); Sun, 4 Jan 2004 21:29:09 -0500 Received: from mailhost.tue.nl ([131.155.2.7]:22793 "EHLO mailhost.tue.nl") by vger.kernel.org with ESMTP id S265850AbUAEC3G (ORCPT ); Sun, 4 Jan 2004 21:29:06 -0500 Date: Mon, 5 Jan 2004 03:29:01 +0100 From: Andries Brouwer To: viro@parcelfarce.linux.theplanet.co.uk Cc: Andries Brouwer , Linus Torvalds , Rob Love , rob@landley.net, Pascal Schmidt , linux-kernel@vger.kernel.org, Greg KH Subject: Re: udev and devfs - The final word Message-ID: <20040105032901.A11459@pclin040.win.tue.nl> References: <20040103141029.B3393@pclin040.win.tue.nl> <20040104000840.A3625@pclin040.win.tue.nl> <20040104034934.A3669@pclin040.win.tue.nl> <20040104142111.A11279@pclin040.win.tue.nl> <20040104230104.A11439@pclin040.win.tue.nl> <20040104223710.GY4176@parcelfarce.linux.theplanet.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20040104223710.GY4176@parcelfarce.linux.theplanet.co.uk>; from viro@parcelfarce.linux.theplanet.co.uk on Sun, Jan 04, 2004 at 10:37:10PM +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1034 Lines: 25 On Sun, Jan 04, 2004 at 10:37:10PM +0000, viro@parcelfarce.linux.theplanet.co.uk wrote: Hi Al - a happy 2004 to you too! > Now, care to explain how preserving aforementioned common Unix idiom > is related to your expostulations? Hmm. You sound like you agree that random device numbers and NFS are a bad combination, but don't see why my example might be relevant. There is a great variation here in what various servers and clients do, but roughly speaking filehandles tend to contain a fsid, and this fsid often (no fsid= given) involves (major,minor,ino). When device numbers vary randomly, the fsid may vary randomly. Various bad things may happen: maybe all file handles go stale (or, worse, refer to something else), or maybe device numbers on the client vary randomly. Andries - 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/