Re: NFS problems, UMON, missing directories, wrong permissions

[Cajus Pollmeier <c.pollmeier@gmx.net>]

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Am Dienstag, 6. Mai 2003 13:48 schrieb Trond Myklebust:
> >>>>> " " =3D=3D Cajus Pollmeier <c.pollmeier@gmx.net> writes:
>      > * Randomly missing directories / shredded permissions
>      >   Either users don't see shared directories contents or have no
>      >   permissions to access them. In fact they have, "id" shows up
>      >   with the correct group membership and "ls -la" shows the
>      >   directory group writable. After logging out and in again,
>      >   everything's fine.
>
> Please note that NFS doesn't support more than 16 groups. If the
> permissions depend on the 17th group as listed by 'id', then it
> probably won't work.

Hi Trond,

thanks for the quick response...
I didn't know that group membership is limited to 16 when using
nfs. Just checked one user affected by this, he's in 18 groups...

> However that may not be the cause of your problem:
>      >   May 6 07:12:59 terminalserver kernel: nsm:
>      >   xdr_encode_mon(0a010002, -1249509120, 67108864, 268435456)
>
> That's interesting. Looks like a pretty nasty stack corruption to
> me. Are you running an Nvidia-tainted kernel by any chance?

Beware. Its a server :-)

=2D --<some merging>--

> Duh. Forget that... For some reason or another xdr_encode_mon() has
> been set up to print its arguments using network-order (and in
> decimal). That's almost worth a bugfix in itself...
>=20
> OK. The bug appears to be in userland then, since the UNMON request is
> correct, and the /var/lib/nfs/sm does contain the 10.0.0.2 address.

So if the above is not the only problem, I can compile a newer set of=20
nfs-utils to check if I run in problems with them.

Again - thanks,
Cajus
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