From owner-freebsd-questions Mon Feb 17 8:24:12 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F0F2637B401 for ; Mon, 17 Feb 2003 08:24:10 -0800 (PST) Received: from dire.bris.ac.uk (dire.bris.ac.uk [137.222.10.60]) by mx1.FreeBSD.org (Postfix) with ESMTP id CFA2643F93 for ; Mon, 17 Feb 2003 08:24:09 -0800 (PST) (envelope-from Jan.Grant@bristol.ac.uk) Received: from mail.ilrt.bris.ac.uk by dire.bris.ac.uk with SMTP-PRIV with ESMTP; Mon, 17 Feb 2003 16:24:03 +0000 Received: from cmjg (helo=localhost) by mail.ilrt.bris.ac.uk with local-esmtp (Exim 3.16 #1) id 18ko1W-00051u-00; Mon, 17 Feb 2003 16:21:42 +0000 Date: Mon, 17 Feb 2003 16:21:42 +0000 (GMT) From: Jan Grant X-X-Sender: cmjg@mail.ilrt.bris.ac.uk To: Markie Cc: Daxbert , freebsd-questions Subject: Re: rw on ntfs volume In-Reply-To: <001101c2d681$a38542a0$0a00a8c0@mrblossom> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Mon, 17 Feb 2003, Markie wrote: > You're right :) Sorry. > > file must be nonresident and must not contain any sparces (uninitialized > areas); > > What does this mean? :) big words for a 17 year old :$ Nonresident: Bigger than a kilobyte :-) A "resident" file is an optimisation. Roughly by analogy, it'd be like storing the contents of a (small) file directly in the inode, rather than in data blocks pointed to by the inode. Most files are likely to be nonresident. If you create a file it'll be nonresident. Most resident data appears to crop up using NTFS' "forked" file ability, which isn't generally something you hear a lot about. Not having any spaces: this is what's called a "sparse" file - eg, you write some bytes, seek forward a gigabyte, and write some more. NTFS has the ability to record this file with a "hole" in the middle, so it doesn't require a GB of disk storage. Most files are unlikely to be sparse. -- jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/ Tel +44(0)117 9287088 Fax +44 (0)117 9287112 http://ioctl.org/jan/ Axioms speak louder than words. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message