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@alexellis
Forked from ppouliot/setFans.sh
Last active April 1, 2021 09:31
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Script to set the fan speed on Ampere server
#! /bin/sh
# Alex Ellis 18th Nov 2020
# Updated for the 1U unit, which has 7 fans
logo () {
echo ""
echo " ▄██▄"
echo " ▄█ █▄"
echo " ▄█ █▄"
echo " ▄▄▄▄█ ▄▄▄ █▄"
echo " ▄█▀▀▀ ▄█ ▀██▄"
echo " ▄█▀ ▄█ ▀█▄"
echo " A M P E R E COMPUTING"
}
display_usage () {
echo ""
echo "Usage: ./setFans.sh auto //Enable Cooling Manager"
echo "Usage: ./setFans.sh N //Set fan PWM to N%"
echo ""
}
set_fan () {
echo -n "Setting fan $1 to "
decPWM=$(printf "%d" $2)
echo -n "$decPWM%. "
fanStat=$(ipmitool raw 0x3C 0x14 $1 $2) #set fan pwm
if [ "$fanStat" = " 00" ]; then
echo "Success"
else
echo "Failed"
fi
}
logo
if [ $# -ne 1 ]; then
display_usage
exit 1
fi
if [ "$1" = "auto" ]; then
#Enable cooling manager
cmStat=$(ipmitool raw 0x3C 0x0B 0x00)
echo -n "Cooling manager "
if [ "$cmStat" = " 00" ]; then
echo "enabled"
echo "Fan speed auto"
else
echo "disabled"
echo "Fan speed manual"
fi
else
#Convert decimal pwm to hex
hexPWM=$(printf "0x%02x" $1)
#Disable cooling manager
cmStat=$(ipmitool raw 0x3C 0x0b 0x01)
echo -n "Cooling manager "
if [ "$cmStat" = " 01" ]; then
echo "disabled"
echo "Fan speed manual"
else
echo "enabled"
echo "Fan speed auto"
fi
sleep 1
#Set the fans
for nFan in {2..7}
do
set_fan $nFan $hexPWM
done
fi
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