[OpenAFS-devel] Hierarchical caching support in AFS?

[Derek Atkins]

Did you look into the possiblities when dealing only with ReadOnly
volumes?

-derek

Jim Rees <rees@umich.edu> writes:

>   I am wondering if it is possible at all with
>   the openafs-1.0.3 to get hierarchical caching whereby an "edge" cache
>   manager upon request for a file from an application that runs on the "edge"
>   box pulls data from an "intermediate" cache manager or an "intermediate"
>   fileserver...
> 
> We tried this once and concluded that in most cases it doesn't help, because
> the client caches already skim off any cacheable data, leaving nothing for
> the intermediate.  We published a couple of tech reports that might be
> useful:
> 
> http://www.citi.umich.edu/techreports/
> 
> D.A. Muntz, P. Honeyman, and C.J. Antonelli, "Evaluating Delayed Write in a
> Multilevel Caching File System," October 1995. [Proc. 2nd Intl. Conf. on
> Dist. Platforms, pp. 415-429, Dresden (February 1996).]
> 
> J. Howe, "Intermediate File Servers in a Distributed File System
> Environment," June 1992.
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-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
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