MFI driver issues

[Erich Weiler]

> I guess it would be most useful if I could somehow force MFI to be used 
> on my boot disk as it is now, but use MPS on my 24 JBOD disks coming 
> from the Perc H800 SAS controller...?  They are JBOD because I have them 
> roped into a ZFS filesystem.

I just checked and the Perc H800 uses the LSI SAS2108 chipset, which in 
theory is supposed to be picked up by the MPS driver, according to this 
web page:

http://leaf.dragonflybsd.org/cgi/web-man/?command=mps&section=ANY

but instead it is picked up by the MFI driver...?  What gives?  ;)  Is 
it that the MPS driver *and* the MFI driver both support the LSI SAS2108 
chipset, but the MFI driver checks first during boot, so it wins?