linux-kernel - Re: Kernel 2.6.30.4 loop(..?) regression (& with/2.6.31-rc6)

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Date:	Wed, 26 Aug 2009 17:19:11 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Christoph Hellwig <hch@...radead.org>
cc:	Nikanth Karthikesan <knikanth@...e.de>,
	Jens Axboe <jens.axboe@...cle.com>,
	linux-kernel@...r.kernel.org, xfs@....sgi.com
Subject: Re: Kernel 2.6.30.4 loop(..?) regression (& with/2.6.31-rc6)

On Wed, 26 Aug 2009, Christoph Hellwig wrote:

> On Wed, Aug 26, 2009 at 09:50:27AM -0400, Justin Piszcz wrote:
>> So far the uptime is 2 days, if it does not recur in the next 24-48
>> hours, do you recommend I follow up with the linux-crypto folks about
>> this?  It appears this could be the cause (no issues, as of yet).
>
> At this point it doesn't look crypto related anymore, but like some
> bad interaction between layers once we add those fsync in the loop code.
>
> What filesystem does you loop image reside on?   Anything else special?
For the root filesystem, on / type xfs (rw,noatime)
For larger partitions (per the cryptoloop doc) the partition itself is 
setup via cryptoloop and then XFS ontop of that.  Nothing special.

> Any way to trgiger it with just loop but not crypto, etc.
Unfortunately not that I am aware of..  Would trying the kernel with the 
patch removed and mounted with -o nobarrier help to show us anything, or?

>
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> http://oss.sgi.com/mailman/listinfo/xfs
>
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