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Date:      Thu, 6 Dec 2001 17:48:18 -0600
From:      Christopher Farley <chris@northernbrewer.com>
To:        BSD Freak <bsd-freak@mbox.com.au>
Cc:        FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject:   Re: Journaling File Systems and Soft Updates confusion
Message-ID:  <20011206174816.A750@northernbrewer.com>
In-Reply-To: <63ba6e639af8.639af863ba6e@mbox.com.au>
References:  <63ba6e639af8.639af863ba6e@mbox.com.au>

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BSD Freak (bsd-freak@mbox.com.au) wrote:

> FreeBSD's ffs curently cannot do this (avoid an fsck) with or without 
> soft updates. Soft updates of FreeBSD is merely there to increase 
> performance.

This is not true. Soft updates ensures that the filesystem is always
kept consistent. The only reason to run fsck after a system crash
is to reclaim lost blocks and inodes, FreeBSD-current already has
an fsck that runs in the background, so that when you bring the
system back up, you do not have to slog through a lengthy manual
fsck. I'm not sure when this is planned for the -STABLE branch, but
it has to be coming eventually!

> I may have this all wrong (someone please correct me if I have) but 
> soft updates is NOT an equivalent to a journaling file system.

True, Soft Updates != Journaling File System. But for most people, it's
a functional substitute.

-- 
Christopher Farley
www.northernbrewer.com

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