Subject: Re: detaching SCSI devices
To: der Mouse <mouse@Rodents.Montreal.QC.CA>
From: Chris G. Demetriou <>
List: tech-kern
Date: 07/08/1999 15:44:37
der Mouse  <mouse@Rodents.Montreal.QC.CA> writes:
> As for how, well, it's pretty simple unless I missed something.  The
> meat of it is in scsiconf.c.  It does occur to me that config_detach
> should take more care with FSTATE_STAR devices; it should be possible
> to free up more than just the last-used unit, so that if you have
> sd0-sd5 and dettach (in order) sd3, sd4, sd5, then it reclaims all
> three units.  Doing this right would be a little interesting, but
> shouldn't be too bad....

Actually, as far as i'm concerned, the "right thing" to do here is
jsut keep the # of the first unit to be allocated to cloning
(FSTATE_STAR) devices, then just search for a free slot.

simple, stupid, and it doesn't have to be particularly efficient, so
there's no point in going to a bunch of trouble optimizing it.

Chris Demetriou - -
Disclaimer: Not speaking for NetBSD, just expressing my own opinion.