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Date: Tue, 2 Oct 2007 16:22:00 -0500
From: Craig Boston <cb@severious.net>
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
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Cc: freebsd-current <freebsd-current@freebsd.org>,
	Brooks Talley <brooks@illuminati.org>
Subject: Re: ZFS corrupting data, even just sitting idle
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On Tue, Oct 02, 2007 at 11:05:44PM +0200, Pawel Jakub Dawidek wrote:
> For me it's just quite interesting to observe how people live for years
> with h/w corrupting their data and only putting ZFS there reveals the
> problems. I wonder how many strange UFS-related problems/panics reported
> over the years are due to buggy hardware.

I suspect some of it could be due to ZFS making multi-disk (>3) setups
more attractive.

For example: A controller / drive combination may work perfectly fine
with UFS on a single disk for years with no corruption, but add 1 or 2
more and it stresses out the power supply and causes strange things.

I recall reading about bugs in cheap ATA controllers that were only
tickled when trying to send simultaneous commands to multiple drives,
for instance.  IIRC a few of them showed up when gmirror started to
become popular.

Craig