> David Balazic wrote:
> >
> > Nathan Walp ([EMAIL PROTECTED]) wrote :
> >
> > > Also, sometime between ac7 and ac18 (spring break kept me from testing
> > > stuff inbetween), i assume during the new aic7xxx driver merge, the
> > > order of detection got changed, and now the ide-scsi virtual host is
> > > host0, and my 29160N is host1. Is this on purpose? It messed up a
> > > bunch of my stuff as far as /dev and such are concerned.
> >
> > SCSI adapters are enumerated randomly(*) , relying on certain numbering
> > will get you into trouble, sooner or later.
> > There is no commonly accepted solution, AFAIK.
> > The same thing can happent to disk enumeration ( sdb becomes sdc )
> > or partition enumeration ( hda6 becomes hda5 ).
> >
> > * - theoreticaly no, but practicaly yes ( most of the time )
>
> SCSI adapters are given host numbers in a random order? Even with no
> hardware changes? Does this make less than sense to anyone else? Every
> kernel EVER up till now has had the real scsi cards (in some particular
> order) then ide-scsi. Have I just been lucky???
Built in scsi adapter drivers are probed in the order in
which they appear in drivers/scsi/Makefile (in the lk 2.4
series). Adapters can be assigned to host numbers using
the "scsihosts" kernel boot option (but this will not
differentiate between 2 adapters controlled by the same
driver (e.g. 2 29160 cards)). Scsi buses are scanned for
devices in ascending order.
If you have lots of SCSI devices then devfs is your friend.
Doug Gilbert
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
