From owner-freebsd-questions@FreeBSD.ORG Sat Feb 4 06:56:20 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 AE2AC16A420 for ; Sat, 4 Feb 2006 06:56:20 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 58E4343D46 for ; Sat, 4 Feb 2006 06:56:20 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id A3D485C73; Sat, 4 Feb 2006 01:56:19 -0500 (EST) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 93992-01; Sat, 4 Feb 2006 01:56:18 -0500 (EST) Received: from [192.168.1.3] (pool-68-161-67-226.ny325.east.verizon.net [68.161.67.226]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pi.codefab.com (Postfix) with ESMTP id 7B4DA5C27; Sat, 4 Feb 2006 01:56:18 -0500 (EST) Message-ID: <43E45016.6090003@mac.com> Date: Sat, 04 Feb 2006 01:56:22 -0500 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: mike@ascendency.net References: <016601c62949$1e590620$0401a8c0@Mike8500> In-Reply-To: <016601c62949$1e590620$0401a8c0@Mike8500> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com Cc: freebsd-questions@freebsd.org Subject: Re: Dumping /usr to samba mounted drive X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Feb 2006 06:56:20 -0000 Mike Loiterman wrote: > Gayn Winters wrote: [ ... ] >>> Changing the format of the drive to Mac OS Extended fixed the >>> problem. UFS has a 4 gig file size limit. >>> >> Mike, >> >> I'm glad you got it working. What was Apple ever thinking with a 4GB >> limit? >> >> -gayn > > Did Apple develop the UFS spec or just implement it? Apple's UFS implementation is a big-endian variant inherited from a mixture of Sun and NEXTSTEP code back in the late 80's and early 90's, later seasoned by BSD-4.4Lite. The tradeoffs between HFS+ and UFS are sufficiently complex that neither is a clear winner for general purpose uses, although UFS tends to do well for lots and lots of little files-- think a squid cache, maildir mail spool, tradspool INN layout of Usenet articles; HFS+ by contrast is Unicode-aware and thus supports international filenames sanely, and the B-tree data structure handles volume-wide operations more efficiently, with a lot less head motion, than the highly-recursive tree traversal that UFS mandates. If you're setting up very large filesystems, greater than 10 terabytes, the Xsan product is a solution that even a non-expert admin can get working without fighting too hard. I haven't had the hardware to try to configure a comparably large filesystem using UFS under FreeBSD, but anecdotes suggest that going above either 2TB or 4TB constitutes sailing into unknown waters... -- -Chuck