Subject: Re: Problems with booting up in general
To: Brett Lymn <blymn@baesystems.com.au>
From: Greywolf <greywolf@starwolf.com>
List: port-sparc
Date: 03/17/2003 10:35:34
Thus spake Brett Lymn ("BL> ") sometime Today...

BL> >
BL> > You mean (id << 3) + lun, I presume...
BL> >
BL>
BL> Nup - all the machines I have ever dealt with I could say sd(0,n,0)
BL> where n is the scsi id and the machine would access the correct
BL> device.  This experience is supported by this:
BL>
BL> http://docs.sun.com/db/doc/801-7042/6i1cjj24f?a=view
BL>
BL> I have not seen anywhere where it mentions luns though - not saying it
BL> will not work but finding an actual document for it seems to be
BL> difficult.
BL>
BL>
BL> > [keep in mind that Missed 'em Five uses controller,target,drive,slice
BL> > as a tuple; luns depend from targets, typically, not the other way
BL> > 'round.]
BL> >
BL>
BL> Yes, well, luns are sub-devices of a target in the scsi world.

I just said that, i.e. N luns per target, not N targets per lun.
I'm sorry I wasn't clearer.

In any case, shifting the lun makes no sense because then if you wanted
to boot from target 3 lun 1, you'd be doing

	boot sd(0,b,0)

instead of

	boot sd(0,19,0)

which is, I believe, what you'd end up doing.

				--*greywolf;
--
NetBSD: A drinking group with a serious computing problem.