Re: [Hdaps-devel] Re: IBM HDAPS, I need a tip.

[Jon Escombe <lists@dresco.co.uk>]

> hard drive parking was already sorted out. We have a script that does this
> and works great parking the heads.
Would have to disagree with you here. Jens' ATA7 parking code is a great 
start but we still have a couple of issues to address before it's usable 
for this purpose. (1) it only works on a subset of the devices that the 
Windows driver works for, and (2) we need a way to freeze the device for 
a short period so that the next I/O request doesn't wake it up before it 
hits the floor...
> The problem here is that we have 10 different models.
>
> One will have 20 as X and the others will have 500 as x. Some will increment
> in 20 when you move them 45Deg, and some will increment 50.
>
> How can you determine from an shake, to a fall?
If there really are devices with resting values of 20 then I would agree 
we have a problem. I've tried on a few different Thinkpads and have 
always seen resting values of several hundreds. If this is true for all, 
I would like to think we could estimate a sensible value that works for 
everyone...
Regards,
Jon.

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