mirror of https://github.com/azlux/log2ram.git
Merge pull request #94 from MegaV0lt/master
Include detection of OpenRC (Gentoo Linux) and automatically (un)install files
This commit is contained in:
azlux
GitHub
commit
851dd0219e
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@ -1,5 +1,5 @@
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# Log2Ram
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Like ramlog for systemd (on debian 8 jessie for example).
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Like ramlog for systemd (on debian 8 jessie for example). Adapted to detect OpenRC init-system when running on Gentoo-Linux (Hopefully). For now only Systemd and OpenRC can be handled.
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Usefull for **RaspberryPi** for not writing on the SD card all the time. You need it because your SD card doesn't want to suffer anymore!
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@ -35,7 +35,7 @@ _____
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**REBOOT** before installing anything else (for example apache2)
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## Upgrade
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You need to stop log2ram (`service log2ram stop`) and start the [install](#install).
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You need to stop log2ram (`service log2ram stop` with systemd or `rc-service log2ram stop` with OpenRC) and start the [install](#install).
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## Customize
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#### variables :
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48
install.sh
48
install.sh
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@ -1,18 +1,46 @@
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#!/usr/bin/env sh
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systemctl -q is-active log2ram && { echo "ERROR: log2ram service is still running. Please run \"sudo service log2ram stop\" to stop it."; exit 1; }
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[ "$(id -u)" -eq 0 ] || { echo "You need to be ROOT (sudo can be used)"; exit 1; }
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[ "$(id -u)" -eq 0 ] || { echo 'You need to be ROOT (sudo can be used)' ; exit 1 ;}
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. /log2ram.conf # Include config to check if size is enought (See below)
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# See if we can find out the init-system
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echo 'Try to detect init and running log2ram service...'
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if [ "$(systemctl --version 2> /dev/null)" != '' ] ; then
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INIT='systemd'
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elif [ "$(rc-service --version 2> /dev/null)" != '' ] ; then
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INIT='openrc'
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fi
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case "$INIT" in
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systemd)
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systemctl -q is-active log2ram && { echo 'ERROR: log2ram service is still running. Please run "sudo service log2ram stop" to stop it.' ; exit 1 ;} ;;
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openrc)
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rc-service log2ram status >/dev/null 2>&1 && { echo 'ERROR: log2ram service is still running. Please run "sudo rc-service log2ram stop" to stop it.' ; exit 1 ;} ;;
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*) echo 'ERROR: could not detect init-system' ; exit 1
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;;
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esac
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echo "Installing log2ram for $INIT init-system"
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# log2ram
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mkdir -p /usr/local/bin/
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install -m 644 log2ram.service /etc/systemd/system/log2ram.service
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install -m 755 log2ram /usr/local/bin/log2ram
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install -m 644 log2ram.conf /etc/log2ram.conf
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install -m 644 uninstall.sh /usr/local/bin/uninstall-log2ram.sh
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systemctl enable log2ram
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if [ "$INIT" = 'systemd' ] ; then
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install -m 644 log2ram.service /etc/systemd/system/log2ram.service
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systemctl enable log2ram
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elif [ "$INIT" = 'openrc' ] ; then
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install -m 755 log2ram.initd /etc/init.d/log2ram
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rc-update add log2ram boot
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fi
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# cron
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install -m 755 log2ram.cron /etc/cron.daily/log2ram
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if [ "$INIT" = 'systemd' ] ; then
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install -m 755 log2ram.cron /etc/cron.daily/log2ram
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elif [ "$INIT" = 'openrc' ] ; then
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install -m 755 log2ram.openrc_cron /etc/cron.daily/log2ram
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fi
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install -m 644 log2ram.logrotate /etc/logrotate.d/log2ram
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# Remove a previous log2ram version
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@ -21,5 +49,11 @@ rm -rf /var/log.hdd
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# Make sure we start clean
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rm -rf /var/hdd.log
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echo "##### Reboot to activate log2ram #####"
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echo "##### edit /etc/log2ram.conf to configure options ####"
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# Check if var SIZE is sufficient and show a warning when too small
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if [ -n "$(du -sh -t "$SIZE" /var/log | cut -f1)" ] ; then # /var/log should be ok on all systems
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echo 'WARNING: Variable SIZE in /etc/log2ram.conf is too small to store the /var/log!'
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echo 'Actual size of /var/log is:' ; du -sh /var/log
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fi
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echo '##### Reboot to activate log2ram! #####'
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echo '##### Edit /etc/log2ram.conf to configure options #####'
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42
log2ram
42
log2ram
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@ -2,45 +2,47 @@
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. /etc/log2ram.conf
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HDD_LOG=/var/hdd.log
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RAM_LOG=/var/log
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HDD_LOG='/var/hdd.log'
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RAM_LOG='/var/log'
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LOG_NAME="log2ram.log"
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LOG_NAME='log2ram.log'
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LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
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LOG_OUTPUT="tee -a $LOG2RAM_LOG"
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printf -v NOW '%(%F %H:%M:%S)T' -1 || NOW="$(date '+%F %H:%M:%S')" # Actual date and time (date as fallback)
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isSafe () {
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[ -d $HDD_LOG/ ] || echo "ERROR: $HDD_LOG/ doesn't exist! Can't sync."
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[ -d $HDD_LOG/ ] || exit 1
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[ ! -d "$HDD_LOG/" ] && { echo "ERROR: $HDD_LOG/ doesn't exist! Can't sync." ; exit 1 ;}
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}
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syncToDisk () {
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isSafe
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echo "==> $NOW - Syncing to disk" >> $LOG2RAM_LOG
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if [ "$USE_RSYNC" = true ]; then
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rsync -aXv --inplace --no-whole-file --delete-after $RAM_LOG/ $HDD_LOG/ 2>&1 | $LOG_OUTPUT
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else
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cp -rfup $RAM_LOG/ -T $HDD_LOG/ 2>&1 | $LOG_OUTPUT
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cp -rfupv $RAM_LOG/ -T $HDD_LOG/ 2>&1 | $LOG_OUTPUT
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fi
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}
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syncFromDisk () {
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isSafe
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if [ ! -z "$(du -sh -t "$SIZE" $HDD_LOG/ | cut -f1)" ]; then
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if [ -n "$(du -sh -t "$SIZE" $HDD_LOG/ | cut -f1)" ]; then
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echo "ERROR: RAM disk too small. Can't sync."
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umount -l $RAM_LOG/
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umount -l $HDD_LOG/
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if [ "$MAIL" = true ]; then
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echo "LOG2RAM : No place on RAM anymore, fallback on the disk" | mail -s 'Log2Ram Error' root;
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echo 'LOG2RAM : No place on RAM anymore, fallback on the disk' | mail -s 'Log2Ram Error' root;
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fi
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exit 1
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fi
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echo "==> $NOW - Syncing from disk" >> $LOG2RAM_LOG
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if [ "$USE_RSYNC" = true ]; then
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rsync -aXv --inplace --no-whole-file --delete-after $HDD_LOG/ $RAM_LOG/ 2>&1 | $LOG_OUTPUT
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else
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cp -rfup $HDD_LOG/ -T $RAM_LOG/ 2>&1 | $LOG_OUTPUT
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cp -rfupv $HDD_LOG/ -T $RAM_LOG/ 2>&1 | $LOG_OUTPUT
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fi
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}
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@ -52,29 +54,29 @@ wait_for () {
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createZramLogDrive () {
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# Check Zram Class created
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if [ ! -d "/sys/class/zram-control" ]; then
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if [ ! -d '/sys/class/zram-control' ]; then
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modprobe zram
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RAM_DEV='0'
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RAM_DEV=0
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else
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RAM_DEV=$(cat /sys/class/zram-control/hot_add)
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RAM_DEV="$(cat /sys/class/zram-control/hot_add)"
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fi
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echo ${COMP_ALG} > /sys/block/zram${RAM_DEV}/comp_algorithm
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echo ${LOG_DISK_SIZE} > /sys/block/zram${RAM_DEV}/disksize
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echo ${SIZE} > /sys/block/zram${RAM_DEV}/mem_limit
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mke2fs -t ext4 /dev/zram${RAM_DEV}
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echo "$COMP_ALG" > "/sys/block/zram${RAM_DEV}/comp_algorithm"
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echo "$LOG_DISK_SIZE" > "/sys/block/zram${RAM_DEV}/disksize"
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echo "$SIZE" > "/sys/block/zram${RAM_DEV}/mem_limit"
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mke2fs -t ext4 "/dev/zram${RAM_DEV}"
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}
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case "$1" in
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start)
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[ -d $HDD_LOG/ ] || mkdir $HDD_LOG/
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[ ! -d "$HDD_LOG/" ] && mkdir $HDD_LOG/
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mount --bind $RAM_LOG/ $HDD_LOG/
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mount --make-private $HDD_LOG/
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wait_for $HDD_LOG
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if [ "$ZL2R" = true ]; then
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createZramLogDrive
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mount -t ext4 -o nosuid,noexec,nodev,user=log2ram /dev/zram${RAM_DEV} ${RAM_LOG}/
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mount -t ext4 -o nosuid,noexec,nodev,user=log2ram "/dev/zram${RAM_DEV}" ${RAM_LOG}/
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else
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mount -t tmpfs -o nosuid,noexec,nodev,mode=0755,size=${SIZE} log2ram $RAM_LOG/
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mount -t tmpfs -o "nosuid,noexec,nodev,mode=0755,size=${SIZE}" log2ram $RAM_LOG/
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fi
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wait_for $RAM_LOG
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syncFromDisk
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@ -95,7 +97,7 @@ case "$1" in
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;;
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*)
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echo "Usage: log2ram {start|stop|write}" >&2
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echo 'Usage: log2ram {start|stop|write}' >&2
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exit 1
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;;
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esac
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@ -5,7 +5,8 @@
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# If it's not enough, log2ram will not be able to use ram. Check you /var/log size folder.
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# The default is 40M and is basically enough for a lot of applications.
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# You will need to increase it if you have a server and a lot of log for example.
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SIZE=40M
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# Note that tmpfs doesn't reserve this memory, but allocates only the needed memory.
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SIZE=100M
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# This variable can be set to true if you prefer "rsync" rather than "cp".
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# I use the command cp -u and rsync -X, so I don't copy the all folder every time for optimization.
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@ -0,0 +1,32 @@
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#!/sbin/openrc-run
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# Init-Skript for log2ram
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# This skript is designed to work on Gentoo Linux with OpenRC
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description="Store logfiles in RAM to minimize writes to disk."
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# Command is available when the service is started
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extra_started_commands="write"
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depend() {
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after localmount
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before logger
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}
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start() {
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ebegin "Starting Log2Ram"
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/usr/local/bin/log2ram start
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eend $?
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}
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stop() {
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ebegin "Stopping Log2Ram"
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/usr/local/bin/log2ram stop
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eend $?
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}
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write() {
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ebegin "Syncing logs to disk"
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/usr/local/bin/log2ram write
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eend $?
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}
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@ -0,0 +1,4 @@
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#!/usr/bin/env sh
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sleep 5 # Delay to avoid conflict with logrotate
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rc-service log2ram write
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42
uninstall.sh
42
uninstall.sh
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@ -1,21 +1,33 @@
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#!/usr/bin/env sh
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if [ "$(id -u)" -eq 0 ]
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then
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[ "$(id -u)" -eq 0 ] || { echo "You need to be ROOT (sudo can be used)"; exit 1; }
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# See if we can find out the init-system
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echo "Try to detect init..."
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if [ "$(systemctl --version)" != '' ] ; then
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INIT='systemd'
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elif [ "$(rc-service --version)" != '' ] ; then
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INIT='openrc'
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fi
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if [ "$INIT" = 'systemd' ] ; then
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service log2ram stop
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systemctl disable log2ram
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rm /etc/systemd/system/log2ram.service
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rm /usr/local/bin/log2ram
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rm /etc/log2ram.conf
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rm /etc/cron.daily/log2ram
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rm /etc/logrotate.d/log2ram
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if [ -d /var/hdd.log ]; then
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rm -r /var/hdd.log
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fi
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echo "Log2Ram is uninstalled, removing the uninstaller in progress"
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rm /usr/local/bin/uninstall-log2ram.sh
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echo "##### Reboot isn't needed #####"
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else
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echo "You need to be ROOT (sudo can be used)"
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elif [ "$INIT" = 'openrc' ] ; then
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rc-service log2ram stop
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rc-update del log2ram boot
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rm /etc/init.d/log2ram
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fi
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rm /usr/local/bin/log2ram
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rm /etc/log2ram.conf
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rm /etc/cron.daily/log2ram
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rm /etc/logrotate.d/log2ram
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if [ -d /var/hdd.log ]; then
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rm -r /var/hdd.log
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fi
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echo "Log2Ram is uninstalled, removing the uninstaller in progress"
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rm /usr/local/bin/uninstall-log2ram.sh
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echo "##### Reboot isn't needed #####"
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