Messages in this thread | | | Subject | Re: IBM HDAPS things are looking up (was: Re: [Hdaps-devel] Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)) | From | Arjan van de Ven <> | Date | Mon, 04 Jul 2005 09:16:41 +0200 |
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> > This is exactly what I said. Use hdparm to make the HD park > > inmediatelly. I did send the email to the HDPARM developer, but he never > > replied. I asked him what would be the best way to make the HD park with > > no exception and then let it come back 5 or 10 seconds later. > > IIRC, you don't have to do anything to wake up the drive after a > STANDBYNOW command, if you want to be on the safe side you just issue an > IDLEIMMEDIATE. So your code will look something like:
the problem for this will be that this app will also want to prevent ANY io going to the disk for a few seconds.
I mean, what use is parking the head if you notice the laptop falling, when the kernel submits IO to it and wakes it up again before it hits the ground :)
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