linux-ext4 - Re: [BUG] ext3: cannot unfreeze a filesystem due to a deadlock

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Date:	Wed, 7 Sep 2011 02:40:07 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Masayoshi MIZUMA <m.mizuma@...fujitsu.com>
Cc:	Jan Kara <jack@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [BUG] ext3: cannot unfreeze a filesystem due to a deadlock

On Wed, Sep 07, 2011 at 12:29:30PM +0900, Masayoshi MIZUMA wrote:
> Hi,
> 
> When I checked the freeze feature for ext3 filesystem using fsfreeze
> command at 3.1.0-rc4, I think the following deadlock problem happened.
> 
> How to reproduce:
>  # mkfs -t ext3 /dev/sdd1
>  # mount /dev/sdd1 /MNT
>  # ./fsstress -d /MNT/tmp -n 10 -p 1000 > /dev/null 2>&1 &
>  # fsfreeze -f /MNT
>  # fsfreeze -u /MNT

Can you add this testcase to xfstests?

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