[OpenAFS] underlying FS type?

[Pete Shinners]

i'm wondering is there are any preferences for the underlying 
filesystem used as AFS /vice partitions? i'm planning to setup a 
simple software RAID under linux (for redundancy). i'm guessing the 
filesystem isn't going to make a large impact on performance, but i 
am wondering if there is anything i should beware of?

it seems there is a wealth of filesystems available to me; ext2, 
ext3, jfs, xfs, reiser? it sounds like AFS does some fancy things 
with unnamed files in those /vicep directories? is that incompatable 
with any of these filesystems? it would seem something journaled 
would be a safer bet, because of the crash recovery?

also, on the client end, is there anything better/worse for the 
cache filesystem? i would guess the filesystem makes minor 
difference for the holding the cache, but i'm curious to know if 
there is any general knowledge out there.

thanks