linux-ext4 - Re: 2.6.28.9: EXT3/NFS inodes corruption

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Message-ID: <20090806170543.GA32511@fieldses.org>
Date:	Thu, 6 Aug 2009 13:05:43 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Sylvain Rochet <gradator@...dator.net>
Cc:	Jan Kara <jack@...e.cz>, linux-kernel@...r.kernel.org,
	linux-ext4@...r.kernel.org, linux-nfs@...r.kernel.org,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: 2.6.28.9: EXT3/NFS inodes corruption

On Thu, Aug 06, 2009 at 03:15:56PM +0200, Sylvain Rochet wrote:
> Hi,
> 
> 
> On Wed, Aug 05, 2009 at 12:56:19AM +0200, Jan Kara wrote:
> > 
> > Thanks for testing. So you seem to be really stressting the path where
> > creation of new files / directories fails (probably due to group quota).
> 
> Yes, there are 29 groups over quota on a total of 4499. Those are mainly 
> spammed websites and therefore quite stressed due to the amount of tries 
> to add new "data".
> 
> 
> > I have one idea what could cause your filesystem corruption, although 
> > it's a wild guess... Please try attached oneliner.
> 
> Running since yesterday.
> 
> 
> > Also your corruption reminded me that Al Viro has been fixing problems
> > where we could cache one inode twice when a filesystem was mounted over NFS
> > and that could also lead to a filesystem corruption. So I'm adding him to
> > CC just in case he has some idea. BTW Al, what do you think about the
> > problem I describe in the attached patch? I'm not sure if it can cause some
> > real problems but in theory it could...
> 
> Should we upgrade NFS clients as well ?  (now running 2.6.28.9)

The client version shouldn't matter.

--b.
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