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Date: Tue, 25 Jan 2011 14:25:41 -0800
From: Nathan March <nathan@gt.net>
To: linux-nfs@vger.kernel.org
Subject: Re: Stale file not being refreshed automatically?
References: <4D3F4A8A.7040003@gt.net>
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Just to add, this is 2.6.32.27 w/ grsecurity.

- Nathan

On 1/25/2011 2:11 PM, Nathan March wrote:
> Hi All,
>
> Having a strange issue, I've reproduced this both on nfs 3 and 4. 
> Currently using v4 with:
>
> exports:
> /var/home/voyage 
> 10.2.1.0/24(rw,fsid=0,async,wdelay,secure,no_subtree_check,anonuid=1000,anongid=1006)
>
> fstab:
> 10.2.1.1:/ /mnt/voyage nfs4 
> rsize=32768,wsize=32768,noatime,nosuid,rw,bg,hard,intr 0 0
>
> Can be produced using these two commands on 2 machines:
>
> perl -le '$| = 1 ; while (1) { sleep 1; $res = -e "/home/voyage/test"; 
> if ($res) { print "-e : $res"; } else { print "-e : $res ($!)"; } }'
> -e : 1
>
> perl -le '$| = 1 ; while (1) { sleep 5; open(F, ">", 
> "/home/voyage/test.foo"); close F; my $res = 
> rename("/home/voyage/test.foo", "/home/voyage/test"); print "rename 
> ($res)"; }'
>
> The first command will occasionally print out: -e :  (Stale NFS file 
> handle)
>
> Now according to http://nfs.sourceforge.net/#faq_a10 as of 2.6.12 the 
> vfs should automatically retry when it gets a estale during path 
> resolution. This doesn't appear to be happening though based on the 
> errors I'm seeing.
>
> Anyone have any thoughts on what might be happening here? Or am I 
> misinterpreting that faq entry? (This is on ext3 if it matters)
>
> - Nathan
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