Re: NFS TUNING: #define NFS3_MAXGROUPS

[Frank van Maarseveen]

On Sun, Sep 26, 2004 at 04:43:29PM +0200, Christian Fischer wrote:
> On Sunday 26 September 2004 16:38, Christian Fischer wrote:
> > Hello.
> >
> > Please can you tell me if  NFS_MAXGROUPS is tunable for linux kernel? (and
> > is it safe?) I need more than 16 groups per user. For BSD-kernel it is a
> > tunable constant (i think so) and I'm not so familar with such things.

That limit is hardcoded in the SUNRPC protocol (part of NFS) and
_cannot_ be changed: it is a fundamental constant in NFS with AUTH_UNIX
authentication. However, there is a trick to bypass this protocol
limitation, see http://www.frankvm.com/nfs-ngroups for a 2.4.x patch.

The 2.6.x patch is under development.

-- 
Frank
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