[Bug 59695] Re: High frequency of load/unload cycles on some hard disks may shorten lifetime

[Pascal Vandeputte]

I'm highly in favor of the blacklist approach used by Novell/openSUSE as
well. It tracks different laptop/hard disk combinations and knows
exactly which apm value (254/255) fixes the problem for each entry. The
storage-fixup script was written and is maintained by kernel developer
Tejun Heo by the way, you can read more information and find the latest
version of the script and config file at
http://ata.wiki.kernel.org/index.php/Known_issues

If your drive isn't listed yet, you can add the config yourself by
looking at the examples and comparing with the output of "dmidecode",
"hdparm -I /dev/sda" and "smartctl -a /dev/sda" on your system. You're
encouraged to send Tejun Heo this information and whether hdparm -B
254/255 fixes it, so the drive db gets more and more complete. You can
do this by mailing linux-ide at vger.kernel.org like I did here:
http://marc.info/?l=linux-ide&m=122082089712147&w=2

This way regular users won't need to use trial and error to see which
apm value is needed to disable it.

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High frequency of load/unload cycles on some hard disks may shorten lifetime
https://bugs.launchpad.net/bugs/59695
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