Harald Barth wrote:
My question is how to permit client in B to use server in B ? I
didn't found any document explaining the algorithm used by OpenAFS
to decide the server contacted by the client.

The algoritm is very old and if your IP numbers do not reflect your
network topology it probably yields incorrect results.

Have a look at man fs_setserverprefs and man fs_getserverprefs

a lower value indicates a greater preference

but first check that the clients really knows that there is more than one copy 
(something like this):

$ fs where /afs/pdc.kth.se/home/
File /afs/pdc.kth.se/home/ is on hosts kinilaw.pdc.kth.se morena.pdc.kth.se sculpin.pdc.kth.se houting.pdc.kth.se

I have two servers mpt and lyn. The two servers are file server and db server.
The two servers hosts a RO copy of my volume. Only mpt have a RW copy.

On a client near lyn, fs where give me only mpt, and fs gets also.
How to add the other server lyn ?

My file /var/db/openafs/etc/cellServDB knows the two servers .

I'm user MacOSX as client and server. with OpenAFS 1.4

Best regards,
--
*Fabien COMBERNOUS*
/unix system engineer/
www.kezia.com <http://www.kezia.com/>
*Tel: +33 (0) 467 992 986*
Kezia Group
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