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Date:      Mon, 14 May 2001 22:51:59 -0700
From:      Alfred Perlstein <bright@wintelcom.net>
To:        David Xu <bsddiy@163.net>
Cc:        Matt Dillon <dillon@earth.backplane.com>, Kris Kennaway <kris@obsecurity.org>, Greg Lehey <grog@lemis.com>, Terry Lambert <tlambert@primenet.com>, Kirk McKusick <mckusick@mckusick.com>, Mikhail Teterin <mi@misha.privatelabs.com>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, Ruslan Ermilov <ru@FreeBSD.ORG>, fs@FreeBSD.ORG
Subject:   Re: Re[2]: [kris@obsecurity.org: Re: cvs commit: src/etc rc]
Message-ID:  <20010514225159.L2009@fw.wintelcom.net>
In-Reply-To: <1029181302.20010515121216@163.net>; from bsddiy@163.net on Tue, May 15, 2001 at 12:12:16PM %2B0800
References:  <200105132342.QAA21879@beastie.mckusick.com> <200105142334.QAA05923@usr06.primenet.com> <20010515115630.H59553@wantadilla.lemis.com> <20010514193332.A85465@xor.obsecurity.org> <20010515120558.M59553@wantadilla.lemis.com> <20010514202707.B93481@xor.obsecurity.org> <200105150344.f4F3iVI45699@earth.backplane.com> <1029181302.20010515121216@163.net>

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* David Xu <bsddiy@163.net> [010514 21:09] wrote:
> Hello Matt,
> 
> Yes, I don't like background fsck too, it is too diffcult to manage,
> I'll turn it off on my machine. a nice solution is a journal file
> system.

Really?  A logging filesystem suffers from the same problems that
softupdates background fsck does.

Basically if you have crash because the disk suddenly starts spewing
out errors those areas will remain broken even after the logging
filesystem restarts.  In fact it's quite possible that a logging
filesystem will continue to trip over the same broken sectors unless
something like Kirk's proposal is implemented, meaning a system
halt followed by a "full" fsck.

Of course I don't really expect you to understand any of this as
you've proven pretty clue-resistant, I just mention it for the
benifit of others who might be able to learn from the knowledge
presented here.

> when will FreeBSD have a journal file system?

As soon as you, David Xu, programmer of the century implements it.

bye,
-- 
-Alfred Perlstein - [alfred@freebsd.org]
Daemon News Magazine in your snail-mail! http://magazine.daemonnews.org/

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