Perhaps FreeNAS would fit the bill?
Thanks for the suggestions (others also), but I don't beleivee it'll do. We need to be able to access the file system directly via FC so we can lock files across systems. Pretty much like xSan, but not on apple. xSan is really StorNext from Qlogic, but half the price per node. So, we are searching for an alternative to xSan, on linux.
For those who don't know xSan, you can access a fibre-channel volume directly, and simultanously among many clients computer or servers. Access, locking and other tasks are handled by a metadata controler who is reponsible for keeping things together. No controler, no volume, hence a failover controler is needed.
So from what I've read so far, I'll be stuck with StorNext.
Some nodes have dedicated volumes on the fiber channel network, and I beleive with what I've read that I could replicate not too difficulty what we've done with the guid partition and apple lable volumes.
Thanks, Nicolas