1
0
mirror of https://github.com/azlux/log2ram.git synced 2023-10-10 13:37:24 +02:00
log2ram/log2ram
David MICHEL 0dc5827f5c typo fix + fix rsync command
fix for #92 , bad fuzzy parameter
2019-09-20 14:18:54 +02:00

102 lines
2.4 KiB
Bash
Executable File

#!/usr/bin/env sh
. /etc/log2ram.conf
HDD_LOG=/var/hdd.log
RAM_LOG=/var/log
LOG_NAME="log2ram.log"
LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
LOG_OUTPUT="tee -a $LOG2RAM_LOG"
isSafe () {
[ -d $HDD_LOG/ ] || echo "ERROR: $HDD_LOG/ doesn't exist! Can't sync."
[ -d $HDD_LOG/ ] || exit 1
}
syncToDisk () {
isSafe
if [ "$USE_RSYNC" = true ]; then
rsync -aXv --inplace --no-whole-file --delete-after $RAM_LOG/ $HDD_LOG/ 2>&1 | $LOG_OUTPUT
else
cp -rfup $RAM_LOG/ -T $HDD_LOG/ 2>&1 | $LOG_OUTPUT
fi
}
syncFromDisk () {
isSafe
if [ ! -z "$(du -sh -t "$SIZE" $HDD_LOG/ | cut -f1)" ]; then
echo "ERROR: RAM disk too small. Can't sync."
umount -l $RAM_LOG/
umount -l $HDD_LOG/
if [ "$MAIL" = true ]; then
echo "LOG2RAM : No place on RAM anymore, fallback on the disk" | mail -s 'Log2Ram Error' root;
fi
exit 1
fi
if [ "$USE_RSYNC" = true ]; then
rsync -aXv --inplace --no-whole-file --delete-after $HDD_LOG/ $RAM_LOG/ 2>&1 | $LOG_OUTPUT
else
cp -rfup $HDD_LOG/ -T $RAM_LOG/ 2>&1 | $LOG_OUTPUT
fi
}
wait_for () {
while ! grep -qs "$1" /proc/mounts; do
sleep 0.1
done
}
createZramLogDrive () {
# Check Zram Class created
if [ ! -d "/sys/class/zram-control" ]; then
modprobe zram
RAM_DEV='0'
else
RAM_DEV=$(cat /sys/class/zram-control/hot_add)
fi
echo ${COMP_ALG} > /sys/block/zram${RAM_DEV}/comp_algorithm
echo ${LOG_DISK_SIZE} > /sys/block/zram${RAM_DEV}/disksize
echo ${SIZE} > /sys/block/zram${RAM_DEV}/mem_limit
mke2fs -t ext4 /dev/zram${RAM_DEV}
}
case "$1" in
start)
[ -d $HDD_LOG/ ] || mkdir $HDD_LOG/
mount --bind $RAM_LOG/ $HDD_LOG/
mount --make-private $HDD_LOG/
wait_for $HDD_LOG
if [ "$ZL2R" = true ]; then
createZramLogDrive
mount -t ext4 -o nosuid,noexec,nodev,user=log2ram /dev/zram${RAM_DEV} ${RAM_LOG}/
else
mount -t tmpfs -o nosuid,noexec,nodev,mode=0755,size=${SIZE} log2ram $RAM_LOG/
fi
wait_for $RAM_LOG
syncFromDisk
;;
stop)
syncToDisk
#ZRAM_LOG=$(awk '$2 == "/var/log" {print $1}' /proc/mounts)
#ZRAM_LOG=$(echo ${ZRAM_LOG} | grep -o -E '[0-9]+')
umount -l $RAM_LOG/
umount -l $HDD_LOG/
# Unsure as even with Root permision denied
#echo ${ZRAM_LOG} > /sys/class/zram-control/hot_remove
;;
write)
syncToDisk
;;
*)
echo "Usage: log2ram {start|stop|write}" >&2
exit 1
;;
esac