Move zram daemon into its own command
This commit is contained in:
Bob Mottram
parent
2bff7cccc0
commit
efc174a705
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@ -3277,81 +3277,14 @@ function enable_zram {
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if grep -Fxq "enable_zram" $COMPLETION_FILE; then
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if grep -Fxq "enable_zram" $COMPLETION_FILE; then
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return
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return
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fi
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fi
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if [[ $INSTALLED_WITHIN_DOCKER == "yes" || $INSTALLING_ON_BBB != "yes" ]]; then
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if [[ $INSTALLED_WITHIN_DOCKER == "yes" || $INSTALLING_ON_BBB != "yes" ]]; then
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${PROJECT_NAME}-zram off
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return
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return
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fi
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fi
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if ! grep -q "options zram num_devices=1" /etc/modprobe.d/zram.conf; then
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echo 'options zram num_devices=1' >> /etc/modprobe.d/zram.conf
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${PROJECT_NAME}-zram on
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fi
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echo '#!/bin/bash' > /etc/init.d/zram
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echo '### BEGIN INIT INFO' >> /etc/init.d/zram
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echo '# Provides: zram' >> /etc/init.d/zram
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echo '# Required-Start:' >> /etc/init.d/zram
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echo '# Required-Stop:' >> /etc/init.d/zram
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echo '# Default-Start: 2 3 4 5' >> /etc/init.d/zram
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echo '# Default-Stop: 0 1 6' >> /etc/init.d/zram
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echo '# Short-Description: Increased Performance In Linux With zRam (Virtual Swap Compressed in RAM)' >> /etc/init.d/zram
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echo '# Description: Adapted from systemd scripts at https://github.com/mystilleef/FedoraZram' >> /etc/init.d/zram
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echo '### END INIT INFO' >> /etc/init.d/zram
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echo 'start() {' >> /etc/init.d/zram
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echo ' # get the number of CPUs' >> /etc/init.d/zram
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echo ' num_cpus=$(grep -c processor /proc/cpuinfo)' >> /etc/init.d/zram
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echo ' # if something goes wrong, assume we have 1' >> /etc/init.d/zram
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echo ' [ "$num_cpus" != 0 ] || num_cpus=1' >> /etc/init.d/zram
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echo ' # set decremented number of CPUs' >> /etc/init.d/zram
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echo ' decr_num_cpus=$((num_cpus - 1))' >> /etc/init.d/zram
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echo ' # get the amount of memory in the machine' >> /etc/init.d/zram
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echo ' mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching "[[:digit:]]+")' >> /etc/init.d/zram
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echo ' mem_total=$((mem_total_kb * 1024))' >> /etc/init.d/zram
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echo ' # load dependency modules' >> /etc/init.d/zram
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echo ' modprobe zram num_devices=$num_cpus' >> /etc/init.d/zram
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echo ' # initialize the devices' >> /etc/init.d/zram
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echo ' for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
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echo ' echo $((mem_total / num_cpus)) > /sys/block/zram$i/disksize' >> /etc/init.d/zram
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echo ' done' >> /etc/init.d/zram
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echo ' # Creating swap filesystems' >> /etc/init.d/zram
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echo ' for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
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echo ' mkswap /dev/zram$i' >> /etc/init.d/zram
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echo ' done' >> /etc/init.d/zram
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echo ' # Switch the swaps on' >> /etc/init.d/zram
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echo ' for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
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echo ' swapon -p 100 /dev/zram$i' >> /etc/init.d/zram
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echo ' done' >> /etc/init.d/zram
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echo '}' >> /etc/init.d/zram
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echo 'stop() {' >> /etc/init.d/zram
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echo ' # get the number of CPUs' >> /etc/init.d/zram
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echo ' num_cpus=$(grep -c processor /proc/cpuinfo)' >> /etc/init.d/zram
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echo ' # set decremented number of CPUs' >> /etc/init.d/zram
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echo ' decr_num_cpus=$((num_cpus - 1))' >> /etc/init.d/zram
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echo ' # Switching off swap' >> /etc/init.d/zram
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echo ' for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
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echo ' if [ "$(grep /dev/zram$i /proc/swaps)" != "" ]; then' >> /etc/init.d/zram
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echo ' swapoff /dev/zram$i' >> /etc/init.d/zram
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echo ' sleep 1' >> /etc/init.d/zram
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echo ' fi' >> /etc/init.d/zram
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echo ' done' >> /etc/init.d/zram
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echo ' sleep 1' >> /etc/init.d/zram
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echo ' rmmod zram' >> /etc/init.d/zram
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echo '}' >> /etc/init.d/zram
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echo 'case "$1" in' >> /etc/init.d/zram
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echo ' start)' >> /etc/init.d/zram
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echo ' start' >> /etc/init.d/zram
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echo ' ;;' >> /etc/init.d/zram
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echo ' stop)' >> /etc/init.d/zram
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echo ' stop' >> /etc/init.d/zram
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echo ' ;;' >> /etc/init.d/zram
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echo ' restart)' >> /etc/init.d/zram
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echo ' stop' >> /etc/init.d/zram
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echo ' sleep 3' >> /etc/init.d/zram
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echo ' start' >> /etc/init.d/zram
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echo ' ;;' >> /etc/init.d/zram
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echo ' *)' >> /etc/init.d/zram
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echo ' echo "Usage: $0 {start|stop|restart}"' >> /etc/init.d/zram
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echo ' RETVAL=1' >> /etc/init.d/zram
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echo 'esac' >> /etc/init.d/zram
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echo 'exit $RETVAL' >> /etc/init.d/zram
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chmod +x /etc/init.d/zram
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update-rc.d zram defaults
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echo 'enable_zram' >> $COMPLETION_FILE
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echo 'enable_zram' >> $COMPLETION_FILE
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}
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}
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@ -0,0 +1,136 @@
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#!/bin/bash
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#
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# .---. . .
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# | | |
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# |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
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# | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
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# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
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#
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# Freedom in the Cloud
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#
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# Enables or disables zram
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# License
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# =======
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#
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# Copyright (C) 2015 Bob Mottram <bob@robotics.uk.to>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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PROJECT_NAME='freedombone'
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export TEXTDOMAIN=${PROJECT_NAME}-zram
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export TEXTDOMAINDIR="/usr/share/locale"
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DAEMON_FILENAME=/etc/systemd/system/zram.service
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function zram_daemon {
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echo '[Unit]' > $DAEMON_FILENAME
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echo 'Description=Zeronet Server' >> $DAEMON_FILENAME
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echo 'After=syslog.target' >> $DAEMON_FILENAME
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echo 'After=network.target' >> $DAEMON_FILENAME
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echo '[Service]' >> $DAEMON_FILENAME
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echo 'Type=simple' >> $DAEMON_FILENAME
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echo 'User=zram' >> $DAEMON_FILENAME
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echo 'Group=zram' >> $DAEMON_FILENAME
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echo 'WorkingDirectory=' >> $DAEMON_FILENAME
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echo "ExecStart=freedombone-zram on" >> $DAEMON_FILENAME
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echo '' >> $DAEMON_FILENAME
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echo '[Install]' >> $DAEMON_FILENAME
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echo 'WantedBy=multi-user.target' >> $DAEMON_FILENAME
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}
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function zram_on {
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if [ ! -f $DAEMON_FILENAME ]; then
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if ! grep -q "options zram num_devices=1" /etc/modprobe.d/zram.conf; then
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echo 'options zram num_devices=1' >> /etc/modprobe.d/zram.conf
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fi
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# get the number of CPUs
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num_cpus=$(grep -c processor /proc/cpuinfo)
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# if something goes wrong, assume we have 1
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[ "$num_cpus" != 0 ] || num_cpus=1
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# set decremented number of CPUs
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decr_num_cpus=$((num_cpus - 1))
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# get the amount of memory in the machine
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mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching "[[:digit:]]+")
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mem_total=$((mem_total_kb * 1024))
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# load dependency modules
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modprobe zram num_devices=$num_cpus
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# initialize the devices
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for i in $(seq 0 $decr_num_cpus); do
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echo $((mem_total / num_cpus)) > /sys/block/zram$i/disksize
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done
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# Creating swap filesystems
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for i in $(seq 0 $decr_num_cpus); do
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mkswap /dev/zram$i
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done
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# Switch the swaps on
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for i in $(seq 0 $decr_num_cpus); do
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swapon -p 100 /dev/zram$i
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done
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zram_daemon
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fi
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}
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function zram_off {
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if [ -f $DAEMON_FILENAME ]; then
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# get the number of CPUs
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num_cpus=$(grep -c processor /proc/cpuinfo)
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# set decremented number of CPUs
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decr_num_cpus=$((num_cpus - 1))
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# Switching off swap
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for i in $(seq 0 $decr_num_cpus); do
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if [ "$(grep /dev/zram$i /proc/swaps)" != "" ]; then
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swapoff /dev/zram$i
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sleep 1
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fi
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done
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sleep 1
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rmmod zram
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rm $DAEMON_FILENAME
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fi
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}
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function show_help {
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echo ''
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echo $"${PROJECT_NAME}-zram [on|off]"
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echo ''
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exit 0
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}
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if [ ! $1 ]; then
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show_help
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else
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if [[ "$1" == "on" || "$1" == "enable" || "$1" == "yes" ]]; then
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zram_on
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else
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zram_off
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fi
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fi
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exit 0
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