[ltp] hdparm & spindown time : still having problems

[Paul RIVIER]

Hi there,

I investigated more about this problem, and I discovered something relly 
interesting.
At least on my system :

experiments done with laptop mode activated

hdparm -B [1-256] /dev/hda  wont change any visible behaviour.
hdparm -S t /dev/hda :

Actually, disk will not spindown after t seconds of inactivity.

BUT !!!!
If I set -B 256, after *exactly t* seconds it will park the heads !
If I sec -B (value<256), it will park the head as well, but sooner (when ?).

In any case, hdparm -y will work until next IO call.

Any idea ?


Paul