Disable read/write caching to disk?

Is it possible to disable all read and write caching to a disk?

I'm playing with the ever so dangerous multiple hosts mounting (rw 
and/or ro) the same filesystem over fiber channel.

Also - what exactly are the issues with forcing an unclean filesystem to 
mount rw?  I know you could (will?) have data corruption, but on which 
data?  Only data that has not been synced to disk?  Any random amount of 
data?

Eric


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Eric Anderson        Sr. Systems Administrator        Centaur Technology
A lost ounce of gold may be found, a lost moment of time never.
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