Subject: Re: ATA/ATAPI kernel redesign
To: David Laight <>
From: Manuel Bouyer <>
List: tech-kern
Date: 02/25/2002 19:59:02
On Sun, Feb 24, 2002 at 10:02:36PM +0000, David Laight wrote:
> > The problem is that, with some controller, you also have to wait 30s before
> > you can decide that there is no device here. With 2 channels this makes a
> > 1mn delay.
> A certain box - that will run sparc solaris, and might get into the
> 'aftermarket' soon - has 4 PCI IDE controllers (8 channels) that
> control a maximum of 4 disks (1).  Doing the 30s timeout in series
> takes far too long....

Yes, and you can easily have 6 pciide controllers in a PC (2 on motherboard
and 4 add-on), I have 5 at home in my text box. This is why I added shortcuts
for some patterns, which are not in the specs at all but seems to work fine
by experience.

Manuel Bouyer, LIP6, Universite Paris VI.