[OpenAFS-devel] Check for CellServDB and AFSDBRR correctness?

[Ted McCabe]

At 4:01 PM -0400 7/6/01, Derek Atkins wrote:
>Ted McCabe <ted@MIT.EDU> writes:
>
>>  I've known of some sites that deliberately only published a subset of
>>  the actual db servers.  Also, since the check may happen while a site
>>  is doing maintenance on their db servers, or during an outage, a
>>  discrepancy may be only be temporary.
>
>Question: what happens if the published subset does not include the
>syncsite?

Hmm, good question.  The example I'm remembering did include any 
possible sync site.  IIRC, I believe the non-published db servers 
were targetted by some special clients.

If the dbservers could be set up to not point clients to the 
sync-site, then one might also do it so that clients using the 
published list would have readonly access to the dbs.  That may be 
desired for clients outside some tightly controlled environment.

Since the dbservers do direct write requests to the sync-site, I 
expect the client happily uses the pointer it gets.  It might 
explicitly check against the published list, I've not looked at the 
code, but there's not much point to check since it has no reason to 
not trust the forwarding info.

    --Ted