Re: Problems with HDD after upgrade from lenny to squeeze

[Petr Gajdůšek <gajdusek.petr@centrum.cz>]

Dne 21.7.2011 18:01, James Brown napsal(a):
> I use Debian AMD64 on my laptop AcerTravel Mate 3040.
> HDD:
> Model Family:     Seagate Momentus 7200.4 series
> Device Model:     ST9500420AS
> In the beginning ot this year I had the next report of smartctl:
> 193 Load_Cycle_Count        0x0032   089   089   000    Old_age   Always
>        -       23521
> (after using my HDD about 1,5 year).
> On April 2011 I upgraded my OS from lenny to squeeze.
> Now I have the next report of smartctl:
> 193 Load_Cycle_Count        0x0032   031   031   000    Old_age   Always
>        -       139954
>
> How I can debug and fix that problem?

Hi,

you can try to change APM for better performance or disable it entirely 
for that disk.

See "hdparm -B /dev/sda" output for the current level and try to raise 
it to 254 (best preformance) or 255 (disabled), i.e. "hdparm -B 255 
/dev/sda". This should prevent the disk from heads unloading (parking).

If this will help, make this setting permanent:

1) Edit /etc/default/hdparm like this:
harddisks="/dev/sda"
hdparm_opts="-B 255"
and make sure /etc/init.d/hdparm is run during boot.

2) Create /etc/pm/sleep.d/01_hdparm file with:
#!/bin/sh

PATH=/sbin:/usr/sbin:/bin:/usr/bin

if [ ! -x /sbin/hdparm ]; then
	exit 0
fi

case "${1}" in
        resume|thaw)
		service hdparm restart
		# nothing
                ;;
esac

So you will not lost the setting after going from sleep/hibernation if 
you are using pm-utils for suspending.

--
Regards,
Petr Gajdůšek