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SubjectRe: Laptop shock detection and harddisk protection

> Short of a satisfying proposition regarding the questions raised, I just
> want to add two things that would be nice to solve in the future one way
> or another and should perhaps be taken into consideration from the
> beginning:
> 1. Disable polling completely when it isn't required: once the hd has
> spun down, there is no need to keep polling the sensors at all. Only
> when the first request requiring the hd to spin up arrives, the
> kernel needs to hold back for a short while to gather enough data
> from the sensors, so shock protection is up and running again.

hdparm can already tell if disk is spinning or not. As userland is
polling, already, that may be enough?

> 2. Make shock protection interact nicely with suspend operations:
> currently, we are out of luck if anything should happen after
> processes have been frozen. This is particularly unfortunatel in the
> case of s2disk.

I'd say that s2disk is similar to early boot... no protection there.
(cesky, pictures)

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