Re: Group limit for NFS exported file systems

[Peter Staubach <staubach@redhat.com>]

Robert Szentmihalyi wrote:
> > On 8/23/06, Robert Szentmihalyi <robert.szentmihalyi@gmx.de> wrote:
> >     
> > > is there a group limit for NFS exported file systems in recent kernels?
> > > One if my users cannot access directories that belong to a group he
> > >       
> > actually _is_ a
> >     
> > > member of. That, however, is true only when accessing them over NFS. On
> > >       
> > the local file
> >     
> > > system, everything is fine. UIDs and GIDs are the same on client and
> > >       
> > server, so that
> >     
> > > cannot be the problem. Client and server run Gentoo Linux with kernel
> > >       
> > 2.6.16 on the
> >     
> > > server and 2.6.17 on the client.
> > >       
> > Is he a member of more than 16 groups?
> >     
>
> Yes. He is actually a member of 27 groups.
> Is the limit of 16 groups still current? I was under the impression that it is a limitation of 2.4 kernels....
> Is there any proper work-around for this?

The 16 group limit is defined by the specification for AUTH_SYS for the RPC.
It can not be easily changed without affecting interoperability.

The use of RPCSEC_GSS and Kerberos can remove this limit.

   Thanx...

      ps
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