From owner-freebsd-questions@FreeBSD.ORG  Sat Dec 20 16:34:39 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 8AFD01065673
	for <freebsd-questions@freebsd.org>;
	Sat, 20 Dec 2008 16:34:39 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl
	[IPv6:2001:4070:101:2::1])
	by mx1.freebsd.org (Postfix) with ESMTP id 32DC58FC1A
	for <freebsd-questions@freebsd.org>;
	Sat, 20 Dec 2008 16:34:37 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1])
	by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id mBKGYUjQ009618;
	Sat, 20 Dec 2008 17:34:30 +0100 (CET)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id
	mBKGYUuK009615; Sat, 20 Dec 2008 17:34:30 +0100 (CET)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Sat, 20 Dec 2008 17:34:30 +0100 (CET)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Chris Whitehouse <cwhiteh@onetel.com>
In-Reply-To: <494CF98C.8080304@onetel.com>
Message-ID: <20081220173311.A9566@wojtek.tensor.gdynia.pl>
References: <494CF98C.8080304@onetel.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: User Questions <freebsd-questions@freebsd.org>
Subject: Re: mount_msdosfs -o large?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 20 Dec 2008 16:34:39 -0000

> chrisw)
> %
>
> However I can't find anything about the large option in man pages for mount, 
> mount_msdosfs or fstab.
>
> Would this be suitable text to go in the -o options section of 
> mount_msdosfs(8)?
>
>
> large
> 	Mount a filesystem larger than 128gb
>
> WARNING: This uses at least 32 bytes of kernel memory (which is not
> reclaimed until the FS is unmounted) for each file on disk to map
> between the 32-bit inode numbers used by VFS and the 64-bit
> pseudo-inode numbers used internally by msdosfs. This is only
> safe to use in certain controlled situations (e.g. read-only FS
> with less than 1 million files).
> Since the mappings do not persist across unmounts (or reboots), these
> filesystems are not suitable for exporting through NFS, or any other
> application that requires fixed inode numbers.
>

please do sent-pr with that.

it is missing important part of manual.