Messages in this thread | | | Date | Mon, 07 Aug 2006 20:43:06 +0200 | From | Harald Dunkel <> | Subject | Re: 2.6.18-rc2, problem to wake up spinned down drive? |
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Tejun Heo wrote: > Pavel Machek wrote: >>> echo 1 > /sys/bus/scsi/devices/1:0:0:0/power/state >> >> Really? I thought power/state takes 0/3 (for D0 and D3) > > Yes, of course. My mistake. Sorry about the confusion. The correct > command is 'echo -n 3 > /sys/bus/scsi/devices/x:y:z:w/power/state'. >
(Sure? :-)
Now this did not work at all. The '-n 3' was probably correct, but when I tried to access the disk, then it did not spin up again (I waited for 5 minutes). There was no message on the console, either.
But I could not reproduce this problem.
How do I monitor that the disk spins down and up?
Regards
Harri
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