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From: Bruce Cran <bruce@cran.org.uk>
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Date: Sun, 9 May 2010 10:46:08 +0100
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Cc: Ansar Mohammed <ansarm@gmail.com>, Bobby Walker <bobbyjwalker@live.com>
Subject: Re: File system
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On Sunday 09 May 2010 04:18:12 Ansar Mohammed wrote:

> The background to this problem is because the FreeBSD root filesystem (UFS)
> is not journaled and for some reason I cannot set my root partition to be
> UFS+SoftUpdates.
> 
> At any rate, we are in the year 2010, most modern operating systems and
> databases and able to survive an unclean shutdown without booting into
> single user mode and file system/data corruption.

Even with SoftUpdates and journaling you'll find UFS doesn't cope well with 
unclean shutdowns: to test it, a couple of weeks ago I started a "rm -rf 
/usr/obj/*" and pressed the reset button - upon startup I got dumped into 
single-user mode with a softupdates inconsistency. I've not tried the same 
test but I think ZFS is much better at recovering from this sort of problem 
since it was designed from the start to be very resilient.

-- 
Bruce Cran