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SubjectRe: Group limit for NFS exported file systems
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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