linux-ext4 - Re: Random corruption test for e2fsck

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Message-ID: <4693A8DA.30606@redhat.com>
Date:	Tue, 10 Jul 2007 10:42:18 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	Theodore Tso <tytso@....edu>
CC:	Kalpak Shah <kalpak@...sterfs.com>,
	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: Random corruption test for e2fsck

Theodore Tso wrote:
>> 5) If the test went by without any errors the test image is deleted and
>> in case of any errors the user is notified that the log of this test run
>> should be mailed to linux-ext4@ and the image should be preserved.
> 
> I certainly like the general concept!!
> 
> I wonder if the code to create a random filesystem and corrupting it
> should be kept as separate shell script, since it can be reused in
> another of interesting ways.  One thought would be to write a test
> script that mounts corrupted filesystems using UML and then does some
> exercises on it (tar cvf on the filesyste, random renames on the
> filesystem, rm -rf of all of the contents of the filesystems), to see
> whether we can provoke a kernel oops.

FWIW, that's what fsfuzzer does, in an fs-agnostic way.

-Eric
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