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Subject: Re: nfs - duplicate directory entries
From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Vladimir Volovich <vvv@vsu.ru>
Cc: linux-kernel@vger.kernel.org
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Date: Fri, 10 Aug 2007 16:42:09 -0400
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On Fri, 2007-08-10 at 23:21 +0400, Vladimir Volovich wrote:
> Hi!
> 
> we have an NFS server (windows-based), and mount a directory from this
> server on a linux box; there is some bug appearing sometimes, namely
> some of the directory entries are reported twice:
> 
> $ ls | wc
>    5968    5968   41776
> $ ls | uniq | wc
>    5964    5964   41748
> $ ls | uniq -d
> 112920
> 112921
> 112922
> 112923
> $ ls -li | grep '11292[0123]'
> 8507232 drwx------ 2 web web 64 2007-02-09 10:54 112920
> 8507232 drwx------ 2 web web 64 2007-02-09 10:54 112920
> 8507219 drwx------ 2 web web 64 2007-02-09 10:54 112921
> 8507219 drwx------ 2 web web 64 2007-02-09 10:54 112921
> 8507195 drwx------ 2 web web 64 2007-02-09 10:54 112922
> 8507195 drwx------ 2 web web 64 2007-02-09 10:54 112922
> 8507188 drwx------ 2 web web 64 2007-02-09 10:54 112923
> 8507188 drwx------ 2 web web 64 2007-02-09 10:54 112923
> 
> i.e. the current directory contains sub-directory 112920 twice,
> sub-directory 112921 twice, etc. - and the inode numbers are the same.

That can happen if the NFS server doesn't send unique cookies.

Trond