On Tue, 2012-06-19 at 11:58 +0200, Christoph Bartoschek wrote:
> Hi,
>
> we still have the problem that some users get permission denied for
> directories they normally can access. The problem only affects a single user
> at a time and automatically goes away after about 30 minutes.
>
> It seems to be a server problem because this happens on all client machines
> at the same time.
>
> Here is how it looks like:
>
> [bartosch@r1106i12 ~]$ ls /afs/eda/prod
> ls: cannot open directory /afs/eda/prod: Permission denied
> [bartosch@r1106i12 ~]$ id
> uid=348(bartosch) gid=200(vls)
> groups=200(vlsi),100(users),201(zab),900(ibm),901(iba),902(ama),1001(eda),2030(asi),2057(ecl),41999(tra)
> [bartosch@r1106i12 ~]$
>
> I have attached the network traffic that was exchanged between the NFS
> server and the client for the ls command captured by wireshark.
>
> Accessing the directory /afs/eda works as expected.
>
> Has anyone an idea what could be wrong?
NFSv3 doesn't use the mode bits to determine access rights, so looking
at a GETATTR call isn't really that helpful. You need to catch the
original ACCESS call and reply in order to figure out what caused the
permission denied issue.
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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