From owner-freebsd-questions Wed Feb 12 10:48:56 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 CD35A37B401 for ; Wed, 12 Feb 2003 10:48:54 -0800 (PST) Received: from pa-plum1b-166.pit.adelphia.net (pa-plum1b-13.pit.adelphia.net [24.53.161.13]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9F4A943FAF for ; Wed, 12 Feb 2003 10:48:53 -0800 (PST) (envelope-from wmoran@potentialtech.com) Received: from potentialtech.com (working [172.16.0.95]) by pa-plum1b-166.pit.adelphia.net (8.12.3/8.12.3) with ESMTP id h1CImorX002795; Wed, 12 Feb 2003 13:48:51 -0500 (EST) (envelope-from wmoran@potentialtech.com) Message-ID: <3E4A9712.8030609@potentialtech.com> Date: Wed, 12 Feb 2003 13:48:50 -0500 From: Bill Moran User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.1) Gecko/20021127 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Heinrich Rebehn Cc: freebsd-questions@freebsd.org Subject: Re: fsck takes very long after crash/reset References: <3E4A5B77.5080103@ant.uni-bremen.de> <3E4A863E.2030801@potentialtech.com> <3E4A8EF5.1070308@ant.uni-bremen.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit 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 Heinrich Rebehn wrote: > Bill Moran wrote: > >> Heinrich Rebehn wrote: >> >>> Hi list, >>> >>> I operate a FreeBSD server with a 300GB Raid. This morning i had to >>> hard reset it and when booting, fsck took some 20 minutes. >> >> I would expect that from 300G >> >>> Most partitions, especially the large ones are mounted with >>> soft-updates. >> >> Good. >> >>> Also, some weeks ago, we had missing files after a crash/fsck. >> >> Soft-updates will do that if the system crashes in the middle of >> writes. > > I have read several times that soft updates ensure that the fs is always > in a consistent state? As I understand it, it is consistent. It's just consistent with the way the filesystem was prior to those files being saved. > According to > murphy's law this happens when the system is needed most urgently. fsck > times of 20 minutes are not tolerable then. Yeah ... isn't Murphy's law a bitch. > This is the point where people talk about journalling fs, and i think > they're right. Did you search the archives as I suggested? There was a lot of useful information in some of the past discussions. > Running fsck in the background might help when 5.0 becomes stable. If it > really works, ok, otherwise i really think a journalling fs is needed. I think journalling is a good idea anyway. Although it's not the solution to every problem, journalling has some advantages that softupdates doesn't. It would be nice if both were available. Are you volunteering, because I seem to remember the conversation that nobody has had the time to port something like Reiser to FreeBSD yet. -- Bill Moran Potential Technologies http://www.potentialtech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message