[OpenAFS] Re: [OpenAFS-devel] Support for huge (really huge!) cell

[Chris Huebsch]

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On Sat, 6 Nov 2004, Ian Delahorne wrote:

>> We plan to install a read-only AFS-DB-Server in every school too (makes
>> at least 100). Will Ubik scale to this number of Servers?
>
> Ubik doesn't scale beyond three servers.

Oh. There are (or at least were) cells with 5 Servers around.

And the other question ist: Do the read-only-DB-Servers take part in the
election, when they can never become sync-site?

Our idea is, to use different CellServDB-Files in each school containing
just the local RO-Servers and the tree Master-RW-Servers. Only the
Master Servers will know all other Servers.

>> Klog seems to select its kaservers randomly from the CellServDB - what
>> about afsd? Is there a "use next"-Server heurestics. What about
>> school-dependend CellServDB-Files, containing just the
>> "local"-RO-DB-Servers and the "master"-RW-Servers?
>
> Nobody in their right mind would use kaserver anyway. Start using
> Kerberos right away.

Sorry for my bad English. What I wanted to ask is: Does afsd use the
same algorithm when it locates a Ubik-Server. In ubikclient.c (which is
used by klog too, that's why klog went into this context) is a rather
simple randomisation of the CellServ-List. Location of the Servers is
not taken into account.

Of course we will use (Heimdahl-)Kerberos 5.

Thank you for your answer.


Chris
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Chris Huebsch     www.h=FCbsch-gemacht.de | TU Chemmnitz, Informatik, RNVS
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