From owner-freebsd-fs Tue Feb 17 02:28:51 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA21356 for freebsd-fs-outgoing; Tue, 17 Feb 1998 02:28:51 -0800 (PST) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from critter.freebsd.dk (critter.freebsd.dk [195.8.129.14]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA21346 for ; Tue, 17 Feb 1998 02:28:46 -0800 (PST) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost.cybercity.dk [127.0.0.1]) by critter.freebsd.dk (8.8.7/8.8.5) with ESMTP id LAA02733; Tue, 17 Feb 1998 11:24:11 +0100 (CET) To: Terry Lambert cc: kuku@gilberto.physik.RWTH-Aachen.DE (Christoph Kukulies), freebsd-fs@FreeBSD.ORG Subject: Re: multi-version FS In-reply-to: Your message of "Tue, 17 Feb 1998 10:12:21 GMT." <199802171012.DAA09362@usr07.primenet.com> Date: Tue, 17 Feb 1998 11:24:11 +0100 Message-ID: <2731.887711051@critter.freebsd.dk> From: Poul-Henning Kamp Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In message <199802171012.DAA09362@usr07.primenet.com>, Terry Lambert writes: >> Yesterday I had a visit from some sales people of Rational Technologies >> who are offering a version control/management under NT (named ClearCase) >> which is kind of GUI based (explorer centric) and which establishes a >> multi version FS under NT (they say 'developed by the people who >> designed the VMS file system' - well, I cannot judge if this can be >> considered a big plus :-). Anyway, is there such a thing as a >> MVFS (multi version FS) under FreeBSD and would it be worth >> taking a look at it ? > > >Versioning operates by creating a namespace incursion into the globbing >namespace. > >The biggest problem with a multiversion FS is that globbing on >NT, 95, DOS, and VMS systems is done in the directory lookup system >call instead of in the shell. The biggest problem with putting your version control in the kernel (as a filesystem or otherwise) is that it doesn't belong there. If somebody thinks they need the kernel in order to implement version control, they are 100% out of their mind or so fixated on mainframe methods that they should be allowed to wither in a badly lit corner of the IT industry. Check out www.perforce.com instead for a MUCH better solution to the version control problem. And before you ask, yes I >do< speak from experience gained the expensive way. -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." "Drink MONO-tonic, it goes down but it will NEVER come back up!" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message