Using /boot/device.hints (as mentioned below), the user can provide a
preference for the mrsas driver to detect a MR-Fusion card instead of the
mfi(4) driver.
hw.mfi.mrsas_enable="1"
At boot time, the mfi(4) driver will get priority to detect MR-Fusion
controllers by default. Before changing this default driver selection
policy, LSI advises users to understand how the driver selection policy
works. LSI's policy is to provide priority to the mfi(4) driver to
detect MR-Fusion cards, but allow for the ability to choose the mrsas
driver to detect MR-Fusion cards.
LSI recommends setting hw.mfi.mrsas_enable="0" for customers who are
using the older mfi(4) driver and do not want to switch to mrsas. For
those customers who are using a MR-Fusion controller for the first time,
LSI recommends using the mrsas driver and setting
hw.mfi.mrsas_enable="1".