On Wed, 14 Jan 1998 23:05:22 +1100 (EST) 
 Darren Reed <darrenr@cyber.com.au> wrote:

 > To my thinking, device = (bus,target) and subunit = (lun,slice,partition)

I really don't like factoring bus, target, and lun into the picture when
trying to decide unit numbers...

Two things to remember:

	(a) Our autoconfig system can assign unit numbers arbitrarily,
	    and our SCSI subsystem allows one to take advantage of this,
	    mapping device unit numbers to arbitrary bus,target,lun
	    combinations.

	(b) dev_t's are used for more than just disks.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                            Home: +1 408 866 1912
NAS: M/S 258-6                                       Work: +1 650 604 0935
Moffett Field, CA 94035                             Pager: +1 415 428 6939