whats "linux 3.0"? :)
the st6140 works "out of the box" with suse linux enterprise server 9 sp3 (sles9.3) and
redhat enterprise server 4 update 4 (rhel4.4) with the "rdac mpp" driver in
failover mode.
without mpp, you will only see the active ("preferred owner") controller for the lun
and the second path failed (e.g. multipathd/device mapper).
-- randy