>
> I'm trying to benchmark raidframe (level 1) with different options.
>
> First: Where can I find a good document about raidframe?  man raidctl
> is good for raidctl, but it doesn't tell too much about raid tuning.

> After this, raidctl -u panics the system, I have to boot in single user
> mode etc.  Is 256 an illegal value for sectPerSU?  If so, why doesn't
> the manual say so?

because current implementation of raidframe can't merge requests larger
than MAXBSIZE=128 sectors.