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SubjectRe: [PATCH] Laptop-mode v7 for linux 2.6.1
Jan De Luyck wrote:
> Patch applied, kernel built, laptop_mode activated, but my disk just doesn't
> want to spin down...
[...]
> But the disk never spins down. Not that I can tell, hdparm -C /dev/hda always
> tells me active/idle, and the sdsl tool also reports 100% disk spinning...
>
> anything else I have to activate/check?

Two things to try:

1. Check your HD with hdparm -I /dev/hdX, and see what it says at the
"Standby timer values:" entry. Mine says:

Standby timer values: spec'd by Standard, with device specific minimum

In fact, when I set my HD to spin down in 20 seconds, it never spins
down -- it's below the minimum. Try a higher value, or use my
smart_spindown script instead (I posted this a while ago, with one of
the laptop_mode patches).

2. Stop klogd, do "echo 1 > /proc/sys/vm/block_dump" and see which
process keeps your disk spun up using dmesg.
Let me know if this helps.

-- Bart
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