From: Paul Menzel <pmenzel@molgen.mpg.de>
To: linux-nfs@vger.kernel.org
Cc: it+linux-nfs@molgen.mpg.de
Subject: How to debug permission denied issues?
Date: Tue, 16 May 2017 13:06:12 +0200 [thread overview]
Message-ID: <bbe53cbb-4d90-1d89-089d-c157b45ea426@molgen.mpg.de> (raw)
Dear NFS folks,
With Linux 4.9.x there are issues, that the NFSD servers denies access
to NFS mounts. Other clients can still connect fine. A restart of the
*client* fixes the issue.
We believe that this is related to a restart of a NIS server, and that
NFSD is now unable to authenticate the requests. Maybe some cache
mismatch of some client identifications?
```
root:sigchld:~/# mount -v -t nfs hopp:/home/joey /mnt
mount.nfs: timeout set for Tue May 16 12:57:04 2017
mount.nfs: trying text-based options
'vers=4,addr=141.14.25.186,clientaddr=141.14.16.120'
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting hopp:/home/joey
```
Could you please point me to the right direction, how this issue can be
debugged?
A first step would be to get debug messages from NFSD, why exactly the
permission was denied to mount the directory.
Kind regards,
Paul
next reply other threads:[~2017-05-16 11:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-16 11:06 Paul Menzel [this message]
2017-05-16 11:59 ` How to debug permission denied issues? Paul Menzel
2017-06-21 11:46 Paul Menzel
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