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Date: Wed, 16 Jul 2014 10:21:47 +0200
Message-ID: <CALtMJEDT=jCWMR0Akjo72fL3SW63dEmDTQbdg5Pv_DV5Oggz_g@mail.gmail.com>
Subject: Re: `ls` shows no files in mounted nfs folder, but ls 'file' works
From: Andreas Fenkart <afenkart@gmail.com>
To: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>,
        Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
        Daniel Mack <zonque@gmail.com>
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Sender: linux-nfs-owner@vger.kernel.org
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2014-07-16 1:54 GMT+02:00 Trond Myklebust <trond.myklebust@primarydata.com>:
> On Sun, Jul 13, 2014 at 11:44 PM, Andreas Fenkart <afenkart@gmail.com> wrote:
>> 2014-07-10 19:51 GMT+02:00 J. Bruce Fields <bfields@fieldses.org>:
>>> On Mon, Jun 23, 2014 at 12:07:22PM +0200, Andreas Fenkart wrote:
>>>> Found regression introduced by this patch
>>>>
>>>> 311324ad NFS: Be more aggressive in using readdirplus for 'ls -l' situations"
>>>>
>>>> # cd /bin
>>>> -sh: cd: /bin: Not a directory
>>>> root@192:/# pwd
>>>> /
>>>> root@192:/# ls /bin
>>>> ls: /bin
>>>> root@192:/# ls -l /bin/sh
>>>> lrwxrwxrwx    1 root     root             9 Jun 16 13:59 /bin/sh -> /bin/bash
>>>>
>>>> the mount options of the client, an embedded system, mounting nfsroot:
>>>> nfs(rw,relatime,vers=2,rsize=4096,wsize=4096,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.xx.xx,mountvers=1,mountproto=udp,local_lock=all,addr=192.168.xx.xx)
>>>> vers: 3.16.0-rc1
>>>>
>>>> the server exports:
>>>> /exports/rootfs 192.168.xx.xx(rw,no_root_squash,subtree_check)
>>>> vers: 3.14-1-amd64 #1 SMP Debian 3.14.4-1 (2014-05-13) x86_64 GNU/Linux
>>>>
>>>> reverting above patch, dir listing with 'ls /' works again
>>>
>>> Is this still happening?
>>
>> yes it is, I just reverted the aforementioned commit.
>
> Can you reapply, and then do an "ls /" while recording the traffic to
> the NFS server using wireshark, and then send us the resulting dump?

http://www.pcapr.net/view/afenkart/2014/6/3/1/nfs-client.dump.html
you have to create a login... simple. Or did you mean attach to email?

> If the client is on an embedded system which can't run wireshark, then
> it is fine to record it on the server, but please use something like
>
> 'tshark -w /var/tmp/dump.out host <client-ip>'

captured on embedded system:
tcpdump -w /tmp/nfs-client.dump

>
> Cheers
>   Trond

thanks, sincerely
Andreas