Ubuntu中Load/Unload Cycle Count问题及解决(3)

case "$1" in
    true)
        echo "**enabled pm for harddisk"
        for DISK_NAME in `echo ${DEVICES_DISK_PM_NAMES}`; do
            ${DEVICES_DISK_PM_POWERSAVE_ON} ${DISK_NAME}
        done ;;
    false)
        echo "**disabled pm for harddisk"
        for DISK_NAME in `echo ${DEVICES_DISK_PM_NAMES}`; do
            ${DEVICES_DISK_PM_POWERSAVE_OFF} ${DISK_NAME}
        done ;;
esac

$ sudo chmod +x disk

 

3) 在sleep.d中加入脚本，目的是在休眠/待机之后唤醒的时候重新设定hdparm的参数：

$ cd /etc/pm/sleep.d/
$ sudo vi disk

#!/bin/bash
. /usr/lib/pm-utils/functions
. /etc/pm/config.d/disk

if test -z ${DEVICES_DISK_PM_NAMES}; then
    exit 1
fi

case "$1" in
    thaw|resume)
        /usr/bin/on_ac_power;
        if [ "$?" -eq 0 ]; then
            echo "**disabled PM for harddisk"
            for DISK_NAME in `echo ${DEVICES_DISK_PM_NAMES}`; do
                ${DEVICES_DISK_PM_POWERSAVE_OFF} ${DISK_NAME}
            done
        elif [ "$?" -eq 1 ]; then
            echo "**enabled PM for harddisk"
            for DISK_NAME in `echo ${DEVICES_DISK_PM_NAMES}`; do
                ${DEVICES_DISK_PM_POWERSAVE_ON} ${DISK_NAME}
            done               
        fi
        ;;
esac

$ sudo chmod +x disk

＊＊＊注意最后一定要为disk脚本添加执行权限。否则pm.tuils不会自动执行这段脚本

4) 如果你没有启用laptop mode （默认是不启用的），可以跳过这部分了。

由于Ubuntu中acpi和pm.utils是共存的，所以如果你启用了laptop mode，那么在改变电源状态(指电池->AC电源或者反之)的时候，acpi会在启用/停用laptop mode的同时设置hdparm参数，会覆盖掉pm-utils所做的设置。

所以如果你启用了laptop mode的话，需要做如下修改：

1′ $ sudo vi /etc/default/acpi-support

将最后的

SPINDOWN_TIME=12

修改为

SPINDOWN_TIME=241

2′ $ sudo vi /etc/acpi/power.sh

将function laptop_mode_enable部分的

$HDPARM -B 1 /dev/$drive 2>/dev/null

修改成

$HDPARM -B 192 /dev/$drive 2>/dev/null

上述的解决方案在Dell Inspiron 700m + Ubuntu 8.04.1上测试通过。在待机唤醒之后参数会重新被设置，但是由于我的机器上休眠有问题，所以没有办法测试休眠。但理论上来也是可以的。

3. 我想定期检测Load_Cycle_Count，怎么办？

好办，这里是一个脚本，具体用法在注释里面粗体标明了。(不好意思…注释好像比代码都长)

#!/bin/bash
#
# @Description:
#  
#   check_lcc v0.2
#
#   Check Load_Cycle_Count from S.M.A.R.T info of your hard drive
#   when power on and off and Save them to $FILE in following format:
#
#          LCC         TIME
#   ON      110044      18:05:00 2008-09-08
#   OFF     110044      18:10:03 2008-09-08
#
#   "ON" indicates POWER ON while "OFF" indicates POWER OFF, LCC is
#   exactly Load_Cycle_Count of your hard drive at TIME.
#
# @Usages:
#  
#   1. sudo vi /etc/init.d/check_lcc
#   2. copy all the contents of this script to it
#     *** Note that u need to modify "FILE" as what u want.
#      save and quit.
#   3. sudo chmod +x /etc/init.d/check_lcc
#   4. sudo update-rc.d check_lcc start 1 2 . stop 99 0 6 .
#   5. Have fun.
#  
#   This script was tested under Ubuntu 8.04.1.
#
# @Author:
#
#   breaddawson@gmail.com
#   2008/09/07

FILE="/home/bread/lcc_report.txt"
STAT=`smartctl -a /dev/sda | grep 193 | sed -nr "s/.*[[:space:]]([[:digit:]]{1,})$/\1/p"`"\t "`date +’%T  %F’`