[OpenAFS] Dummy fileserver putting clients 'on hold'

[Rainer Toebbicke]

Before re-inventing the wheel:

has anybody got an AFS fileserver that refuses all requests in such a way that 
clients wait and retry?

I'm thinking of something that replaces the standard fileserver for just a few 
minutes and puts everbody on 'hold the line, please' in order to allow for 
short operations which would otherwise require scheduling outage, stopping 
batch well before, etc.

I wonder whether it would be sufficient to take the standard fileserver and 
mess around until it returns VBUSY on just about every request.

Our target in this case: RAID controller firmware upgrade, which requires 
unmounting and resetting the RAIDs, but why not do something similar while 
e.g. the salvager has its hour or so of glory provided that accesses to R/Os 
don't get blocked?

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Rainer Toebbicke        http://cern.ch/~rtb         rtb@mail.cern.ch  O__
European Laboratory for Particle Physics(CERN) - Geneva, Switzerland   > |
Phone: +41 22 767 8985       Fax: +41 22 767 7155                     ( )\( )