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From: Josef Bacik <josef@redhat.com>
To: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: bonnie triggers and endless numbers of stack traces
Date: Fri, 19 Aug 2011 15:36:55 -0400	[thread overview]
Message-ID: <4E4EBB57.3040209@redhat.com> (raw)
In-Reply-To: <j2m3ud$u8e$1@dough.gmane.org>

On 08/19/2011 12:45 PM, Bernd Schubert wrote:
> Just for performance tests I run:
> 
> ./bonnie++ -d /mnt/btrfs -s0 -n 1:256:256:1 -r 0
> 
> and this causes and endless number of stack traces. Those seem to 
> come from:
> 
> use_block_rsv()
> 
> 	ret = block_rsv_use_bytes(block_rsv, blocksize);
> 	if (!ret)
> 		return block_rsv;
> 	if (ret) {
> 		WARN_ON(1);
> 		ret = reserve_metadata_bytes(trans, root, block_rsv, blocksize,
> 
> 
> Why is there a WARN_ON(1)? Running the bonnie benchmark is basically impossible
> that.

This is being worked on, if you really don't like it pull my git tree
and test it out and see if the errors go away

git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work.git

Thanks,

Josef

  parent reply	other threads:[~2011-08-19 19:36 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-19 16:45 bonnie triggers and endless numbers of stack traces Bernd Schubert
2011-08-19 17:28 ` Bernd Schubert
2011-08-19 19:36 ` Josef Bacik [this message]
2011-08-19 23:45   ` David Sterba
2011-08-22  8:17   ` Bernd Schubert
2011-08-29 18:42     ` [PATCH debug] btrfs: ratelimit WARN_ON in use_block_rsv David Sterba

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