[sysvinit, NOT systemd] Commands in rc.local not executed

Question

Hello Community,
I'm using the common sysvinit initscripts, so the following problem should not be related to systemd.
I just made some powersaving settings as advised in https://wiki.archlinux.org/index.php/Powertop in /etc/rc.local, so for example
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
After rebooting I checked the settings and found...
$ cat /sys/class/scsi_host/host0/link_power_management_policy
max_performance
This is my complete rc.local file:
#!/bin/bash
# /etc/rc.local: Local multi-user startup script.
# Keep dirty writes in memory
echo 90 > /proc/sys/vm/dirty_ratio
# Keep dirty writes out of cache
echo 5 > /proc/sys/vm/dirty_background_ratio
# VM writeback timeout
echo 6000 > /proc/sys/vm/dirty_writeback_centisecs
# SATA Active Link Powermanagement
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
# set Advanced Power Management feature
hdparm -B 128 /dev/sda
The upper "echo" commands aren't executed, as well as the SATA Active Link Powermanagement.
Strange enough, but the hdparm command seems to be executed. I see the output in the boot messages and in /var/log/boot:
Wed Sep 5 13:11:22 2012: /dev/sda:
Wed Sep 5 13:11:22 2012: setting Advanced Power Management level to 0x80 (128)
Wed Sep 5 13:11:23 2012: APM_level = 128
Does anybody have a clue, why the "echo" commands aren't executed while the hdparm is?
Any hint would really be appreciated!

Answer 1

indianahorst wrote:
Hello Community,
I'm using the common sysvinit initscripts, so the following problem should not be related to systemd.
I just made some powersaving settings as advised in https://wiki.archlinux.org/index.php/Powertop in /etc/rc.local, so for example
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
After rebooting I checked the settings and found...
$ cat /sys/class/scsi_host/host0/link_power_management_policy
max_performance
This is my complete rc.local file:
#!/bin/bash
# /etc/rc.local: Local multi-user startup script.
# Keep dirty writes in memory
echo 90 > /proc/sys/vm/dirty_ratio
# Keep dirty writes out of cache
echo 5 > /proc/sys/vm/dirty_background_ratio
# VM writeback timeout
echo 6000 > /proc/sys/vm/dirty_writeback_centisecs
# SATA Active Link Powermanagement
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
# set Advanced Power Management feature
hdparm -B 128 /dev/sda
The upper "echo" commands aren't executed, as well as the SATA Active Link Powermanagement.
Strange enough, but the hdparm command seems to be executed. I see the output in the boot messages and in /var/log/boot:
Wed Sep 5 13:11:22 2012: /dev/sda:
Wed Sep 5 13:11:22 2012: setting Advanced Power Management level to 0x80 (128)
Wed Sep 5 13:11:23 2012: APM_level = 128
Does anybody have a clue, why the "echo" commands aren't executed while the hdparm is?
Any hint would really be appreciated!
What desktop do you use? Specifically, do you run upower? This seems to be related to upower's call to pm-powersave which would turn on high-performance settings when running on AC...
FWIW, here is my rc.local
. /etc/rc.conf
. /etc/rc.d/functions
echo "Entering rc.local"
stat_busy "Setting WiFi powersave"
iw dev wlan0 set power_save on
if [ $? -gt 0 ]; then
stat_fail
else
stat_done
fi
stat_busy "Setting CPU and SCSI powersavings"
echo 99 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
for h in /sys/class/scsi_host/host?; do
if [ -f $h/link_power_management_policy ]; then
echo "min_power" > $h/link_power_management_policy
fi
done
stat_done
stat_busy "Remount /dev/shm noexec"
mount -o remount,noexec /dev/shm
if [ $? -gt 0 ]; then
stat_fail
else
stat_done
fi
and
$ for h in /sys/class/scsi_host/host?; do cat $h/link_power_management_policy; done
min_power
min_power
min_power
min_power