2018-02-16 01:03:18 +01:00
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#!/usr/bin/env sh
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2016-04-18 12:05:19 +02:00
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2017-05-02 15:13:05 +02:00
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. /etc/log2ram.conf
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2016-12-02 01:26:09 +01:00
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2017-12-07 17:42:40 +01:00
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LOG_NAME="log2ram.log"
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2020-05-03 21:51:44 +02:00
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2016-12-01 01:27:06 +01:00
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2016-12-02 01:26:09 +01:00
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isSafe () {
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2017-12-07 17:42:40 +01:00
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[ -d $HDD_LOG/ ] || echo "ERROR: $HDD_LOG/ doesn't exist! Can't sync."
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2017-10-02 20:37:46 +02:00
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[ -d $HDD_LOG/ ] || exit 1
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2016-12-02 01:26:09 +01:00
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}
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syncToDisk () {
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isSafe
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2020-05-03 21:51:44 +02:00
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2016-12-01 01:27:06 +01:00
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if [ "$USE_RSYNC" = true ]; then
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2020-05-03 21:51:44 +02:00
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rsync -aXv --inplace --no-whole-file --delete-after $RAM_LOG/ $HDD_LOG/ 2>&1 | tee -a $LOG2RAM_LOG
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2016-12-01 01:27:06 +01:00
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else
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2020-05-04 22:11:17 +02:00
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cp -rfup --preserve=context $RAM_LOG/ -T $HDD_LOG/ 2>&1 | tee -a $LOG2RAM_LOG
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2016-12-01 01:27:06 +01:00
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fi
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}
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syncFromDisk () {
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2016-12-02 01:26:09 +01:00
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isSafe
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2020-05-03 21:51:44 +02:00
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2020-05-07 11:52:44 +02:00
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TP_SIZE=$SIZE
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if [ "$ZL2R" = true ]; then
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TP_SIZE=$LOG_DISK_SIZE
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2020-05-07 13:46:01 +02:00
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fi
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2020-05-07 11:52:44 +02:00
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if [ ! -z "$(du -sh -t "$TP_SIZE" $HDD_LOG/ | cut -f1)" ]; then
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2020-05-03 21:51:44 +02:00
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echo "ERROR: RAM disk for "$HDD_LOG/" too small. Can't sync."
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2017-10-02 20:37:46 +02:00
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umount -l $RAM_LOG/
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umount -l $HDD_LOG/
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2017-12-07 17:42:40 +01:00
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if [ "$MAIL" = true ]; then
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2020-05-03 21:51:44 +02:00
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echo "LOG2RAM : No place on RAM for "$HDD_LOG/" anymore, fallback on the disk" | mail -s 'Log2Ram Error' root;
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2017-12-07 17:42:40 +01:00
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fi
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2017-04-18 15:53:36 +02:00
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exit 1
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fi
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2016-12-01 01:27:06 +01:00
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if [ "$USE_RSYNC" = true ]; then
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2020-05-03 21:51:44 +02:00
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rsync -aXv --inplace --no-whole-file --delete-after $HDD_LOG/ $RAM_LOG/ 2>&1 | tee -a $LOG2RAM_LOG
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2016-12-01 01:27:06 +01:00
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else
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2020-05-04 22:11:17 +02:00
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cp -rfup --preserve=context $HDD_LOG/ -T $RAM_LOG/ 2>&1 | tee -a $LOG2RAM_LOG
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2016-12-01 01:27:06 +01:00
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fi
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}
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2017-10-02 20:37:46 +02:00
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wait_for () {
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2018-02-16 00:55:45 +01:00
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while ! grep -qs "$1" /proc/mounts; do
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2017-12-07 17:42:40 +01:00
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sleep 0.1
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done
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2017-10-02 20:37:46 +02:00
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}
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2016-04-18 12:05:19 +02:00
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2019-03-08 05:58:06 +01:00
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createZramLogDrive () {
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# Check Zram Class created
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2019-03-09 01:24:14 +01:00
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if [ ! -d "/sys/class/zram-control" ]; then
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2019-03-08 05:58:06 +01:00
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modprobe zram
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RAM_DEV='0'
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else
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RAM_DEV=$(cat /sys/class/zram-control/hot_add)
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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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}
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2016-04-18 12:05:19 +02:00
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case "$1" in
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2020-05-03 21:51:44 +02:00
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start)
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IFS=';'
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for i in $PATH_DISK; do
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PATH_FIRST_PART=$( echo ${i%/*} )
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PATH_LAST_PART=$( echo ${i##/*/} )
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RAM_LOG=$i
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HDD_LOG=$PATH_FIRST_PART/hdd.$PATH_LAST_PART
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LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
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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} ${RAM_LOG}/
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else
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mount -t tmpfs -o nosuid,noexec,nodev,mode=0755,size=${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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done
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;;
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2016-04-18 12:05:19 +02:00
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2020-05-03 21:51:44 +02:00
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stop)
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IFS=';'
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for i in $PATH_DISK; do
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PATH_FIRST_PART=$( echo ${i%/*} )
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PATH_LAST_PART=$( echo ${i##/*/} )
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RAM_LOG=$i
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HDD_LOG=$PATH_FIRST_PART/hdd.$PATH_LAST_PART
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LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
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syncToDisk
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#ZRAM_LOG=$(awk '$2 == "/var/log" {print $1}' /proc/mounts)
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#ZRAM_LOG=$(echo ${ZRAM_LOG} | grep -o -E '[0-9]+')
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umount -l $RAM_LOG/
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umount -l $HDD_LOG/
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# Unsure as even with Root permision denied
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#echo ${ZRAM_LOG} > /sys/class/zram-control/hot_remove
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done
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;;
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2016-04-18 12:05:19 +02:00
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2020-05-03 21:51:44 +02:00
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write)
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IFS=';'
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for i in $PATH_DISK; do
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PATH_FIRST_PART=$( echo ${i%/*} )
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PATH_LAST_PART=$( echo ${i##/*/} )
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RAM_LOG=$i
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HDD_LOG=$PATH_FIRST_PART/hdd.$PATH_LAST_PART
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LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
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syncToDisk
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done
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;;
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2017-12-07 17:42:40 +01:00
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2020-05-03 21:51:44 +02:00
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*)
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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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2016-04-18 12:05:19 +02:00
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esac
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