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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-ext4@vger.kernel.org
Subject: [Bug 201685] ext4 file system corruption
Date: Mon, 03 Dec 2018 03:34:33 +0000
Message-ID: <bug-201685-13602-FWmzxRozuV@https.bugzilla.kernel.org/>
In-Reply-To: <bug-201685-13602@https.bugzilla.kernel.org/>
References: <bug-201685-13602@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=201685

--- Comment #185 from Eric Benoit (eric@ecks.ca) ---
(In reply to Guenter Roeck from comment #181)
> #180: Eric, would you mind sharing the script used to create the files and
> to read them back ?

Just a pair of trivial one-liners:

for i in {00000..13999}; do echo dd bs=1M count=64 if=/dev/urandom of=urand.$i;
done

for i in urand.*; do echo dd bs=1M if=$i of=/dev/null; done | parallel -j8

I'm using /dev/urandom since I have lz4 compression enabled. I imagine
/dev/zero would be just as effective if you don't.

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