linux-ext4 - Re: [PATCH RESEND] ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!

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Message-ID: <47B5AD44.8010305@bull.net>
Date:	Fri, 15 Feb 2008 16:18:28 +0100
From:	Valerie Clement <valerie.clement@...l.net>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH RESEND] ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!

Eric Sandeen wrote:
> Valerie Clement wrote:
>> Fix kernel BUG at fs/ext4/mballoc.c:910!
>>
>> From: Valerie Clement <valerie.clement@...l.net>
>>
>> With the flex_bg feature enabled, a large file creation oopses the
>> kernel.
> 
> Valerie, what's the specific testcase for this?
> 
> Thanks,
> -Eric
I just did a simple dd,
  dd if=/dev/zero of=/mnt/test/foo bs=1M count=8k
on an ext4 filesystem with the uninit_groups, lazy_bg and flex_bg
features enabled and the default mount options.

The difficulty is to build e2fsprogs programs that integrate all
these new features together.
    Valerie





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