Subject: Re: Questions about pagebuf code
From: Craig Tierney <ctierney@HPTI.com>
To: Russell Cattelan <cattelan@xfs.org>
Cc: linux-xfs@oss.sgi.com
In-Reply-To: <1083614597.24397.16.camel@naboo.americas.sgi.com>
References: <1083435856.2302.3.camel@localhost.localdomain>
	 <20040501194709.A23768@infradead.org>
	 <1083446482.2302.22.camel@localhost.localdomain>
	 <1083614597.24397.16.camel@naboo.americas.sgi.com>
Content-Type: text/plain
Message-Id: <1083698993.2376.4.camel@hpti9.fsl.noaa.gov>
Mime-Version: 1.0
Date: Tue, 04 May 2004 13:29:53 -0600
Content-Transfer-Encoding: 7bit
Sender: linux-xfs-bounce@oss.sgi.com
Errors-to: linux-xfs-bounce@oss.sgi.com
Precedence: bulk
Content-Length: 794
Lines: 24

On Mon, 2004-05-03 at 14:03, Russell Cattelan wrote:
> Look at this bug and see if matches you're situation.
> http://oss.sgi.com/bugzilla/show_bug.cgi?id=198


I ran doublewrite on my server.  I bumped up the threads
to 20 and was easy able to generate a problem.  

I wrote a script that submitted 1 doublewrite process
to each of 20 nodes, to more mimic what I am doing.  I ran
these for 6 hours and did not have a problem.  It could
be that my jobs are putting more of a load on the system,
or the problem isn't the same.

However, since the doublewrite test passes on a uni-processor
kernel, I am rebuilding my kernel and will rerun my test
to see if it works or not.  

The codes might not be the same, but if it is a race condition
there still might be something similar there.

Craig