I have a system with two on-board SCSI controllers (see lsoci output below)
and one AHA-2940U stuck into a PCI slot. The on-board controllers are Adaptec
AIC-7899P U160 chips on the Intel server mboard. I have been running the system with
2.6.8-rc4-mm1 but detected some abnormalities with NFS server subsystem stuff
so I decided to update to 2.6.9-rc4-mm1 however when I did so only the AHA-2940U
card that is stuck into the PCI slot is found. Since this is not the controller
with the disks attached the system is not able to find it's root filesystem.