From owner-freebsd-questions Wed Feb 12 20:47:39 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 2ABAE37B401 for ; Wed, 12 Feb 2003 20:47:38 -0800 (PST) Received: from post-20.mail.nl.demon.net (post-20.mail.nl.demon.net [194.159.73.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id A662343FB1 for ; Wed, 12 Feb 2003 20:47:36 -0800 (PST) (envelope-from cls@raggedclown.net) Received: from [212.238.197.102] (helo=mailhost.raggedclown.net) by post-20.mail.nl.demon.net with esmtp (Exim 3.36 #1) id 18jBHb-0009O8-00 for freebsd-questions@FreeBSD.ORG; Thu, 13 Feb 2003 04:47:35 +0000 Received: from localhost (localhost [127.0.0.1]) by mailhost.raggedclown.net (Ragged Clown Mail Gateway [dawn]) with ESMTP id 361A2C7EF for ; Thu, 13 Feb 2003 05:47:35 +0100 (CET) Received: from willow.raggedclown.net (willow.raggedclown.intra [192.168.1.10]) by mailhost.raggedclown.net (Ragged Clown Mail Gateway [dawn]) with ESMTP id 2AEA11A15 for ; Thu, 13 Feb 2003 05:47:25 +0100 (CET) Received: by willow.raggedclown.net (Ragged Clown Host [willow], from userid 1009) id 1D89F225F9; Thu, 13 Feb 2003 05:47:25 +0100 (CET) Date: Thu, 13 Feb 2003 05:47:25 +0100 From: Cliff Sarginson To: freebsd-questions@FreeBSD.ORG Subject: Re: Why is there no JFS? Message-ID: <20030213044725.GC632@raggedclown.net> References: <3E4A863E.2030801@potentialtech.com> <3E4A8EF5.1070308@ant.uni-bremen.de> <3E4A9712.8030609@potentialtech.com> <3E4AA331.5040701@ant.uni-bremen.de> <3E4AA734.5040102@potentialtech.com> <045401c2d2db$f9d45c30$0a0aa8c0@dweebsoft.com> <20030212225631.GA10375@HAL9000.homeunix.com> <005801c2d2eb$aa5fae60$1200a8c0@gsicomp.on.ca> <3E4ADDDE.5040208@pantherdragon.org> <3E4B138F.26E32E75@mindspring.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3E4B138F.26E32E75@mindspring.com> User-Agent: Mutt/1.5.3i X-Virus-Scanned: by AMaViS 0.3.12pre8 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 Wed, Feb 12, 2003 at 07:40:00PM -0800, Terry Lambert wrote: > Darren Pilgrim wrote: > > Not really. A properly laid-out filesystem hierarchy will result in no > > writes to / (except for installworld/kernel). That removes the problem > > that journalling addresses, and is probably why softupdates is disabled > > by default for /. For large, active filesystems, journalling would be a > > big improvement when you had to run a foreground fsck. > From what I understand, since I use Linux as well, is that EXT3 is really a sort of journalling layer above EXT2, since you can mount EXT3 systems as EXT2 - just without the journalling. Since FreeBSD does have some support for EXT2 already, would it not be a possibility ..shortest road to Rome -- to extend EXT3 functionality into it ? But then I guess the Stallman factor comes into the equation. But I do agree it would be nice to have journalling available somehow. Rebooting an incorrectly shutdown (crashed) Linux FS using EXT3 or Reiser you miss the repairs going on if you blink. There is of course the operational consideration of speed of disk i/o. I have read conflicting reports on reiser as to whether it is significantly slower or faster than EXT2 -- seems to be dependent on number and size of files on the system. -- Regards Cliff Sarginson The Netherlands [ This mail has been checked as virus-free ] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message