Public bug reported:
Binary package hint: acpid
Although there is a bugreport (Bug #59695) about similar thing, I have
to report it, because it is a different kind of bug.
I use a notebook hard disk (Samsung HM400LI) in my home linux server (Ubuntu
8.10 Server 64-bit version).
I installed acpid packages for handling the power button on the case. In
default acpid daemon install several modules like this (/etc/defaults/acpid):
# Specify modules to load on acpid's startup
# MODULES may be uncommented to load "none", contain the string "all"
# to load all acpi related modules or simply a space seperated list
# of modules to be probed.
#MODULES="battery ac processor button fan thermal"
# using all allows us to drop extra modules in drivers/acpi and have them
# be autoloaded.
MODULES="all"
After using my server for a while I realized that the Load_Cycle_Count
parameter is increasing continuously, if there is no load on the server.
In four months it reached the 100000. You can check it with
smartctl -a /dev/sda
(193. or 225. parameter in the table, it depends on your HD)
After several week investigation I realized that the battery module is
the problem which tries to manage the HD.
So the bug is the following:
If the PC is on AC (desktop PC or server) and there is no battery installed
then the acpid battery module should identify the situation and shouldn't try
to control a power-saving capable HD (like a notebook HD) increasing its
Load_Cycle_Count.
Actually Samsung guarantees 600000 number of Load/Unload other
manufacturer guarantees the same or probably less (2-3000000). After
that, your hard disk can die.
The acpid package version is 1.0.6-9ubuntu4. The kernel version is
2.6.27-9 (linux server 64-bit).
Workaround:
After removing the battery module the increasing of Load_Cycle_Count stopped.
** Affects: acpid (Ubuntu)
Importance: Undecided
Status: New
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Notebook hard disk Load_Cycle_Count is increasing on Ubuntu Server
https://bugs.launchpad.net/bugs/320499
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