From owner-freebsd-fs Sun Jan 23 13:25:41 2000 Delivered-To: freebsd-fs@freebsd.org Received: from cs.columbia.edu (cs.columbia.edu [128.59.16.20]) by hub.freebsd.org (Postfix) with ESMTP id A024E14EE0 for ; Sun, 23 Jan 2000 13:25:39 -0800 (PST) (envelope-from ezk@shekel.mcl.cs.columbia.edu) Received: from shekel.mcl.cs.columbia.edu (shekel.mcl.cs.columbia.edu [128.59.18.15]) by cs.columbia.edu (8.9.1/8.9.1) with ESMTP id QAA17725; Sun, 23 Jan 2000 16:25:38 -0500 (EST) Received: (from ezk@localhost) by shekel.mcl.cs.columbia.edu (8.9.1/8.9.1) id QAA28218; Sun, 23 Jan 2000 16:25:37 -0500 (EST) Date: Sun, 23 Jan 2000 16:25:37 -0500 (EST) Message-Id: <200001232125.QAA28218@shekel.mcl.cs.columbia.edu> X-Authentication-Warning: shekel.mcl.cs.columbia.edu: ezk set sender to ezk@shekel.mcl.cs.columbia.edu using -f From: Erez Zadok To: Brian Beattie Cc: fs@FreeBSD.ORG Subject: Re: UDF, userfs In-reply-to: Your message of "Fri, 21 Jan 2000 10:19:36 PST." Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org There's another option: wrapfs---a kernel-level stackable f/s template that you can use, modify, and get whatever functionality you want. In-kernel means better performance which may be very important for a dvd application. Wrapfs works around the old nullfs deficiencies (which are being addressed nowadays by fixing the VFS). You can get a paper (Usenix '99) and s/w from http://www.cs.columbia.edu/~ezk/research/ Erez. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message