linux-kernel - Re: 2.6.29.1: nfsd: page allocation failure

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Message-ID: <4A38C7CA.7040005@msgid.tls.msk.ru>
Date:	Wed, 17 Jun 2009 14:39:06 +0400
From:	Michael Tokarev <mjt@....msk.ru>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.29.1: nfsd: page allocation failure - nfsd or kernel problem?

Justin Piszcz wrote:
> 
> 
> On Wed, 17 Jun 2009, Michael Tokarev wrote:
> 
>> Michael Tokarev wrote:
>>> Justin Piszcz wrote:
>> ...
>>
>> Justin, by the way, what's the underlying filesystem on the server?
>>
>> I've seen this error on 2 machines already (both running 2.6.29.x 
>> x86-64),
>> and in both cases the filesystem on the server was xfs.  May this be
>> related somehow to http://bugzilla.kernel.org/show_bug.cgi?id=13375 ?
>> That one is different, but also about xfs and nfs.  I'm trying to
>> reproduce the problem on different filesystem...
> 
> Hello, I am also running XFS on 2.6.29.x x86-64.
> 
> For me, the error happened when I was running an XFSDUMP from a client 
> (and dumping) the stream over NFS to the XFS server/filesystem.  This is 
> typically when the error occurs or during heavy I/O.

Very similar load was here -- not xfsdump but tar and dump of an ext3
filesystems.

And no, it's NOT xfs-related: I can trigger the same issue easily on
ext4 as well.  About 20 minutes of running 'dump' of another fs
to the nfs mount and voila, nfs server reports the same page allocation
failure.  Note that all file operations are still working, i.e. it
produces good (not corrupted) files on the server.

/mjt
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