[OpenAFS] humungous disk caches

[Derrick J Brashear]

On Wed, 12 Mar 2003, Bryan Bayerdorffer wrote:

> Setting aside the question of whether a huge cache is a good idea, what's the
> largest client disk cache that can be configured?  I can get 16GB so far with
> -chunksize 18 and -files 65536, but a chunksize of 19 causes accesses to /afs
> to hang, as does doubling the number of files (cacheinfo is always set
> correspondingly).
>
> What causes the hangs?  I'm using -dcache 3600 right now.  Does this value
> correlate to the cache size in any way other than performance?
>
> The clients are openMosix cluster nodes, and the cache is on reiserfs with -o
> nolog,notail.

we don't support reiserfs for cache, period, since it doesn't bother to
support unique inode numbers.