linux-ext4 - data=journal busted

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Message-Id: <20070215204445.411d2760.akpm@linux-foundation.org>
Date:	Thu, 15 Feb 2007 20:44:45 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: data=journal busted

I have a report from a google person who just did some basic
power-it-off-during-a-write testing on 2.6.20's ext3.  ordered-data is OK,
but data=journal came back with crap in the file data.

Is anyone doing any formal recovery stress-testing?

I suspect we should resurrect and formalise my old
make-the-disk-stop-accepting-writes-when-a-timer-goes-off thing.  It was
very useful for stress-testing recovery.
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