Shared disks

[Jon Hittner]

Hi,
Im not sure if what Im trying to do is possible under linux and if so, I 
thought that beowulf might be a posible solution.
  
I just got a Hitachi 9200 Fibre disk array, and I hooked it up to two
of my linux servers.  I created a raid set, set it up, and I can mount it
from both systems fine.  What I want to do is mount the disk rw on one
system and ro on the other. So the Second system can process data that
the first one collects.  NFS is much too slow for our use.

What is happening, is that the only way I can see changes I make on the
other system, is to umount and then remount the ro volume on the second
system. Until I do that, new files never show up, and deleted ones never
disapear.  After I remount, then I can access all the files with no
problem.    I have tried several filesystems (reiserfs,ext2,ext3) and I see 
the same problem.

Am I missing a mount option or something?  Is this even possible? Is there 
anyting in Beowulf that would help?

Thanks,
Jon