Re: soft update vs journaling?
From: Michael Loftis
Date: Mon Jan 23 2006 - 00:32:40 EST
--On January 22, 2006 1:42:38 AM -0500 John Richard Moser
<nigelenki@xxxxxxxxxxx> wrote:
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So I've been researching, because I thought this "Soft Update" thing
that BSD uses was some weird freak-ass way to totally corrupt a file
system if the power drops. Seems I was wrong; it's actually just the
opposite, an alternate solution to journaling. So let's compare notes.
I hate to say it...but in my experience, this has been exactly the case
with soft updates and FreeBSD 4 up to 4.11 pre releases.
Whenever something untoward would happen, the filesystem almost always lost
files and/or data, usually just files though. In practice it's never
really worked too well for me. It also still requires a full fsck on boot,
which means long boot times for recovery on large filesystems.
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