File Content: 95hdparm-apm #! /bin/sh # # This script adjusts hard drive APM settings using hdparm. The hardware # defaults (usually hdparm -B 127) cause excessive head load/unload cycles # on many modern hard drives. We therefore set hdparm -B 254 while on AC # power. On battery we set hdparm -B 128; this still does not guarantee # disk parking, but is safer than causing lots of mechanical wear on disks # as we seem to get currently with 127. # # Refactored from acpi-support's 90-hdparm.sh for pm-utils if grep -wq "nohdparm" /proc/cmdline ; then exit 0 fi # Do nothing when called via /etc/init.d/acpi-support; udev rules take care # of setting the initial hdparm policy for us. if ([ "$previous" ] && [ "$runlevel" ]) || [ "$runlevel" = S ]; then exit 0 fi if [ -e /usr/sbin/laptop_mode ] ; then LMT_CONTROL_HD_POWERMGMT=$(. /etc/laptop-mode/laptop-mode.conf && echo "$CONTROL_HD_POWERMGMT") if [ "$LMT_CONTROL_HD_POWERMGMT" != 0 ] \ && [ -e /var/run/laptop-mode-tools/enabled ] then # Laptop mode controls hdparm -B settings, we don't. exit 0 fi fi . /lib/hdparm/hdparm-functions resume_hdparm_apm() { for dev in /dev/sd? /dev/hd? ; do apm_opt= if [ -b $dev ] && hdparm_try_apm $dev ; then for option in $(hdparm_options $dev); do case $option in -B*) apm_opt=$option ;; *) ;; esac done if [ -n "$apm_opt" ]; then hdparm $apm_opt $dev fi fi done } resume_hdparm_spindown() { for dev in /dev/sd? /dev/hd? ; do # Check for force_spindown_time option # If defined apply hdaprm -S even if APM is not supported # See also #758988 ignore_apm= options=$(hdparm_options $dev) case $options in (*'force_spindown_time'*) ignore_apm='true' ;; esac apm_opt= if [ -b $dev ]; then if hdparm_try_apm $dev || [ "$ignore_apm" = true ] ; then for option in $(hdparm_options $dev); do # Convert manually introduced option "force_spindown_time" # back to "-S" understandable by hdparm option=$(echo $option| sed 's/force_spindown_time/-S/') case $option in -S*) apm_opt=$option ;; *) ;; esac done if [ -n "$apm_opt" ]; then hdparm $apm_opt $dev fi fi fi done } case "$1" in true|false) # powersaving on/off resume_hdparm_apm ;; thaw|resume) resume_hdparm_apm # only set the -S option on resuming, not necessary for power.d resume_hdparm_spindown ;; *) exit 254 ;; esac Submit