Thanks for the clarification. I plan to change my /etc/rc to say
# Configure raid devices.
for dev in 0 1 2 3; do
if [ -f /etc/raid$dev.conf ]; then
if [ -e /fastboot ]; then
raidctl -c /etc/raid$dev.conf raid$dev
else
raidctl -i raid$dev
raidctl -c /etc/raid$dev.conf raid$dev
fi
fi
done
until the "latest" version of raidctl with the -P option is available. (When might that be?)