From owner-freebsd-questions Sun Nov 24 2: 5:18 2002 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 2EF9137B401 for ; Sun, 24 Nov 2002 02:05:17 -0800 (PST) Received: from HAL9000.homeunix.com (12-232-220-15.client.attbi.com [12.232.220.15]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5C23643E9C for ; Sun, 24 Nov 2002 02:05:16 -0800 (PST) (envelope-from dschultz@uclink.Berkeley.EDU) Received: from HAL9000.homeunix.com (localhost [127.0.0.1]) by HAL9000.homeunix.com (8.12.6/8.12.5) with ESMTP id gAOA5FUf003547; Sun, 24 Nov 2002 02:05:15 -0800 (PST) (envelope-from dschultz@uclink.Berkeley.EDU) Received: (from das@localhost) by HAL9000.homeunix.com (8.12.6/8.12.5/Submit) id gAOA5FnI003546; Sun, 24 Nov 2002 02:05:15 -0800 (PST) (envelope-from dschultz@uclink.Berkeley.EDU) Date: Sun, 24 Nov 2002 02:05:15 -0800 From: David Schultz To: Cliff Sarginson Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Confirmation: ext2fs requires kernel rebuild? Message-ID: <20021124100514.GB3172@HAL9000.homeunix.com> Mail-Followup-To: Cliff Sarginson , freebsd-questions@FreeBSD.ORG References: <20021119100625.GC679@HAL9000.homeunix.com> <20021121035034.GA2591@HAL9000.homeunix.com> <20021121072556.GB1590@raggedclown.net> <20021121230912.GE6062@HAL9000.homeunix.com> <20021121232340.GA70539@raggedclown.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20021121232340.GA70539@raggedclown.net> 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 Thus spake Cliff Sarginson : > On Thu, Nov 21, 2002 at 03:09:12PM -0800, David Schultz wrote: > > Thus spake Cliff Sarginson : > > FreeBSD support for ext2fs is a specific instance of the more > > general problem that features that very few people care about tend > > not to get maintained. FreeBSD already has a filesystem that is > > more complete and faster than ext2fs,[1] so the only people using > > both UFS and ext2fs are also running Linux. If you mount an > > ext2fs filesystem r/w, consider yourself a beta tester. > > > Oh I am not comparing their relative merits. But the thing is there are > people who for one reason or another run heterogenous networks. I mean > it is not a crime to run both Linux and FreeBSD (or is it ?). My feeling > is that it is a shame that is all. > > As for your scathing comment about the evolution of EXT2, I have no comment > since it sounds like opinion rather than fact. The point of my post was to point out why nobody is interested in maintaining FreeBSD's ext2fs support. But ext2fs really is a simplified version of FFS! Basically, they took out support for fragments and vastly simplified the allocation policies. Some of the things they took out aren't even used anymore in FFS, like the code to take rotational offsets on the disk into consideration. On the other hand, they left out Kirk's realloc algorithm, which has been shown to significantly reduce fragmentation as filesystems age. (FYI, some people have expressed interest in porting ReiserFS to FreeBSD. Hans Reiser is willing to negotiate special exceptions to the license, as long as Microsoft can't build the next version of Windows on top of FreeBSD and be able to use his filesystem for free.) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message