57 lines
1.6 KiB
Bash
57 lines
1.6 KiB
Bash
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#!/bin/bash
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# This script limits the threshholds of the superloud supermicro fans to more
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# manageable values, if used as is (instead of swapping fans for e.g. noctua fans).
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# Put this in e.G. /etc/init.d/ , because values are reverted on powerloss.
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# set limits in 64 steps from 00-FF (convert to hex!):
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# 0x00 == 0% / minimal
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# ...
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# 0x16 == 25%
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# 0x24 == 37.5%
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# 0x32 == 50%
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# ...
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# 0x64 == 100% / fullspeed
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LIMIT="0x16"
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# number of fans installable on given mainboard (check with e.G. `ipmitool sdr | grep -i rpm`)
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FANCOUNT="8"
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# fan critical limits
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LNR="300" # Lower Non-Recoverable
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LC="500" # Lower Critical
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LNC="700" # Lower Non-Critical
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UNC="10000" # Upper Non-Critical
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UC="10500" # Upper Critical
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UNR="11000" # Upper Non-Recoverable
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# check availability of ipmitool
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if
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which ipmitool >/dev/null
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then
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echo "ipmitool available. Continue."
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else
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echo "ipmitool not installed. Aborting."
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exit 1
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fi
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# limit upper and lower values for fans 1-8 to non-unrealistic values
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for fan in $(seq 1 $FANCOUNT); do
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/usr/bin/ipmitool sensor thresh FAN$fan upper $UNC $UC $UNR
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/usr/bin/ipmitool sensor thresh FAN$fan lower $LNR $LC $LNC
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done
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echo "set fan mode to full (needed for static control) and let things settle"
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/usr/bin/ipmitool raw 0x30 0x45 0x01 0x01; sleep 10
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echo "set fans in "system" zone to 25% and let things settle"
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/usr/bin/ipmitool raw 0x30 0x70 0x66 0x01 0x00 $LIMIT; sleep 5
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echo "set fans in "peripheral" zone to 25% and let things settle"
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/usr/bin/ipmitool raw 0x30 0x70 0x66 0x01 0x01 $LIMIT; sleep 5
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echo "all done"
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