Subject: Re: ATA/ATAPI kernel redesign
To: None <>
From: David Laight <>
List: tech-kern
Date: 02/24/2002 22:02:36
> 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....


(1) Avoids a 'feature' of the PCI controller that makes it difficult
to do UDMA33 (I think) with more than 1 disk connected.

David Laight: