|To:||Christoph Hellwig <hch@xxxxxxxxxxxxx>|
|Subject:||Re: Kernel 220.127.116.11 loop(..?) regression (& with/2.6.31-rc6)|
|From:||Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>|
|Date:||Wed, 26 Aug 2009 17:31:06 -0400 (EDT)|
|Cc:||Nikanth Karthikesan <knikanth@xxxxxxx>, Jens Axboe <jens.axboe@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx|
|References:||<alpine.DEB.2.00.0908221044420.30321@xxxxxxxxxxxxxxxx> <20090822201558.GA17955@xxxxxxxxxxxxx> <alpine.DEB.2.00.0908221645440.20848@xxxxxxxxxxxxxxxx> <20090822205502.GA18904@xxxxxxxxxxxxx> <alpine.DEB.2.00.0908221659030.23463@xxxxxxxxxxxxxxxx> <20090823224504.GA19942@xxxxxxxxxxxxx> <alpine.DEB.2.00.0908240704130.9427@xxxxxxxxxxxxxxxx> <alpine.DEB.2.00.0908260949550.9396@xxxxxxxxxxxxxxxx> <20090826180234.GC14019@xxxxxxxxxxxxx> <alpine.DEB.2.00.0908261717001.1594@xxxxxxxxxxxxxxxx> <20090826212732.GA18124@xxxxxxxxxxxxx>|
|User-agent:||Alpine 2.00 (DEB 1167 2008-08-23)|
On Wed, 26 Aug 2009, Christoph Hellwig wrote:
On Wed, Aug 26, 2009 at 05:19:11PM -0400, Justin Piszcz wrote: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.Just to make sure we have all data here - you see the problem only with loop devices backed by XFS, only with loop devices backed by raw partitions or with both?
Will give it a try with 2.6.31-rc6 and mount all loop devices (both those backed by XFS and raw partitions) with -o nobarrier to see if the problem recurs. So far though with that patch up until this next test, there were no problems.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?Actually, yes - seeing what happens if you run plain 2.6.30 or 2.6.31-rc without the backout patch, but with -o nobarrier would be very interesting.
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