1f21fb798SNaresh Kamboju#!/bin/bash 27170066eSThomas Gleixner# SPDX-License-Identifier: GPL-2.0-or-later 3f21fb798SNaresh Kamboju# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved. 4f21fb798SNaresh Kamboju# 5f21fb798SNaresh Kamboju# Test creates several zram devices with different filesystems on them. 6f21fb798SNaresh Kamboju# It fills each device with zeros and checks that compression works. 7f21fb798SNaresh Kamboju# 8f21fb798SNaresh Kamboju# Author: Alexey Kodanev <alexey.kodanev@oracle.com> 9f21fb798SNaresh Kamboju# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> 10f21fb798SNaresh Kamboju 11f21fb798SNaresh KambojuTCID="zram01" 12f21fb798SNaresh KambojuERR_CODE=0 13f21fb798SNaresh Kamboju 14f21fb798SNaresh Kamboju. ./zram_lib.sh 15f21fb798SNaresh Kamboju 16f21fb798SNaresh Kamboju# Test will create the following number of zram devices: 17f21fb798SNaresh Kambojudev_num=1 18f21fb798SNaresh Kamboju# This is a list of parameters for zram devices. 19f21fb798SNaresh Kamboju# Number of items must be equal to 'dev_num' parameter. 20f21fb798SNaresh Kambojuzram_max_streams="2" 21f21fb798SNaresh Kamboju 22f21fb798SNaresh Kamboju# The zram sysfs node 'disksize' value can be either in bytes, 23f21fb798SNaresh Kamboju# or you can use mem suffixes. But in some old kernels, mem 24f21fb798SNaresh Kamboju# suffixes are not supported, for example, in RHEL6.6GA's kernel 25f21fb798SNaresh Kamboju# layer, it uses strict_strtoull() to parse disksize which does 26f21fb798SNaresh Kamboju# not support mem suffixes, in some newer kernels, they use 27f21fb798SNaresh Kamboju# memparse() which supports mem suffixes. So here we just use 28f21fb798SNaresh Kamboju# bytes to make sure everything works correctly. 29f21fb798SNaresh Kambojuzram_sizes="2097152" # 2MB 30f21fb798SNaresh Kambojuzram_mem_limits="2M" 31f21fb798SNaresh Kambojuzram_filesystems="ext4" 32f21fb798SNaresh Kambojuzram_algs="lzo" 33f21fb798SNaresh Kamboju 34f21fb798SNaresh Kambojuzram_fill_fs() 35f21fb798SNaresh Kamboju{ 36f21fb798SNaresh Kamboju local mem_free0=$(free -m | awk 'NR==2 {print $4}') 37f21fb798SNaresh Kamboju 38f21fb798SNaresh Kamboju for i in $(seq 0 $(($dev_num - 1))); do 39f21fb798SNaresh Kamboju echo "fill zram$i..." 40f21fb798SNaresh Kamboju local b=0 41f21fb798SNaresh Kamboju while [ true ]; do 42f21fb798SNaresh Kamboju dd conv=notrunc if=/dev/zero of=zram${i}/file \ 43f21fb798SNaresh Kamboju oflag=append count=1 bs=1024 status=none \ 44f21fb798SNaresh Kamboju > /dev/null 2>&1 || break 45f21fb798SNaresh Kamboju b=$(($b + 1)) 46f21fb798SNaresh Kamboju done 47f21fb798SNaresh Kamboju echo "zram$i can be filled with '$b' KB" 48f21fb798SNaresh Kamboju done 49f21fb798SNaresh Kamboju 50f21fb798SNaresh Kamboju local mem_free1=$(free -m | awk 'NR==2 {print $4}') 51f21fb798SNaresh Kamboju local used_mem=$(($mem_free0 - $mem_free1)) 52f21fb798SNaresh Kamboju 53f21fb798SNaresh Kamboju local total_size=0 54f21fb798SNaresh Kamboju for sm in $zram_sizes; do 55f21fb798SNaresh Kamboju local s=$(echo $sm | sed 's/M//') 56f21fb798SNaresh Kamboju total_size=$(($total_size + $s)) 57f21fb798SNaresh Kamboju done 58f21fb798SNaresh Kamboju 59f21fb798SNaresh Kamboju echo "zram used ${used_mem}M, zram disk sizes ${total_size}M" 60f21fb798SNaresh Kamboju 61f21fb798SNaresh Kamboju local v=$((100 * $total_size / $used_mem)) 62f21fb798SNaresh Kamboju 63f21fb798SNaresh Kamboju if [ "$v" -lt 100 ]; then 64f21fb798SNaresh Kamboju echo "FAIL compression ratio: 0.$v:1" 65f21fb798SNaresh Kamboju ERR_CODE=-1 66f21fb798SNaresh Kamboju zram_cleanup 67f21fb798SNaresh Kamboju return 68f21fb798SNaresh Kamboju fi 69f21fb798SNaresh Kamboju 70f21fb798SNaresh Kamboju echo "zram compression ratio: $(echo "scale=2; $v / 100 " | bc):1: OK" 71f21fb798SNaresh Kamboju} 72f21fb798SNaresh Kamboju 732dfb28e3SNaresh Kambojucheck_prereqs 74f21fb798SNaresh Kambojuzram_load 75f21fb798SNaresh Kambojuzram_max_streams 76f21fb798SNaresh Kambojuzram_compress_alg 77f21fb798SNaresh Kambojuzram_set_disksizes 78f21fb798SNaresh Kambojuzram_set_memlimit 79f21fb798SNaresh Kambojuzram_makefs 80f21fb798SNaresh Kambojuzram_mount 81f21fb798SNaresh Kamboju 82f21fb798SNaresh Kambojuzram_fill_fs 83f21fb798SNaresh Kambojuzram_cleanup 84f21fb798SNaresh Kambojuzram_unload 85f21fb798SNaresh Kamboju 86f21fb798SNaresh Kambojuif [ $ERR_CODE -ne 0 ]; then 87f21fb798SNaresh Kamboju echo "$TCID : [FAIL]" 88f21fb798SNaresh Kambojuelse 89f21fb798SNaresh Kamboju echo "$TCID : [PASS]" 90f21fb798SNaresh Kambojufi 91