zram

zram.sh

#!/bin/bash
zr=$(lsmod|grep zram)
if [ -z "$zr" ]; then
        echo "load zram"
        modprobe zram num_devices=5
fi

if (("$#" == 0)); then
        echo lz4 > /sys/block/zram0/comp_algorithm &&
        echo 4G > /sys/block/zram0/disksize &&
        mkswap --label zram0 /dev/zram0 &&
        swapon --priority 100 /dev/zram0
elif [ "$1" = "off" ]; then
        echo "unload zram"
        swapoff -a &&
        rmmod zram
else
        for n in `seq 2 "$1"`
        do
                echo lz4 > /sys/block/zram"$n"/comp_algorithm &&
                echo 4G > /sys/block/zram"$n"/disksize &&
                mkswap --label zram"$n" /dev/zram"$n" &&
                swapon --priority 100 /dev/zram"$n"
        done
fi