100 lines
2.6 KiB
Bash
100 lines
2.6 KiB
Bash
|
#!/bin/bash
|
||
|
|
# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# This program is free software; you can redistribute it and/or
|
||
|
|
# modify it under the terms of the GNU General Public License as
|
||
|
|
# published by the Free Software Foundation; either version 2 of
|
||
|
|
# the License, or (at your option) any later version.
|
||
|
|
#
|
||
|
|
# This program is distributed in the hope that it would be useful,
|
||
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
# GNU General Public License for more details.
|
||
|
|
#
|
||
|
|
# Test creates several zram devices with different filesystems on them.
|
||
|
|
# It fills each device with zeros and checks that compression works.
|
||
|
|
#
|
||
|
|
# Author: Alexey Kodanev <alexey.kodanev@oracle.com>
|
||
|
|
# Modified: Naresh Kamboju <naresh.kamboju@linaro.org>
|
||
|
|
|
||
|
|
TCID="zram01"
|
||
|
|
ERR_CODE=0
|
||
|
|
|
||
|
|
. ./zram_lib.sh
|
||
|
|
|
||
|
|
# Test will create the following number of zram devices:
|
||
|
|
dev_num=1
|
||
|
|
# This is a list of parameters for zram devices.
|
||
|
|
# Number of items must be equal to 'dev_num' parameter.
|
||
|
|
zram_max_streams="2"
|
||
|
|
|
||
|
|
# The zram sysfs node 'disksize' value can be either in bytes,
|
||
|
|
# or you can use mem suffixes. But in some old kernels, mem
|
||
|
|
# suffixes are not supported, for example, in RHEL6.6GA's kernel
|
||
|
|
# layer, it uses strict_strtoull() to parse disksize which does
|
||
|
|
# not support mem suffixes, in some newer kernels, they use
|
||
|
|
# memparse() which supports mem suffixes. So here we just use
|
||
|
|
# bytes to make sure everything works correctly.
|
||
|
|
zram_sizes="2097152" # 2MB
|
||
|
|
zram_mem_limits="2M"
|
||
|
|
zram_filesystems="ext4"
|
||
|
|
zram_algs="lzo"
|
||
|
|
|
||
|
|
zram_fill_fs()
|
||
|
|
{
|
||
|
|
local mem_free0=$(free -m | awk 'NR==2 {print $4}')
|
||
|
|
|
||
|
|
for i in $(seq 0 $(($dev_num - 1))); do
|
||
|
|
echo "fill zram$i..."
|
||
|
|
local b=0
|
||
|
|
while [ true ]; do
|
||
|
|
dd conv=notrunc if=/dev/zero of=zram${i}/file \
|
||
|
|
oflag=append count=1 bs=1024 status=none \
|
||
|
|
> /dev/null 2>&1 || break
|
||
|
|
b=$(($b + 1))
|
||
|
|
done
|
||
|
|
echo "zram$i can be filled with '$b' KB"
|
||
|
|
done
|
||
|
|
|
||
|
|
local mem_free1=$(free -m | awk 'NR==2 {print $4}')
|
||
|
|
local used_mem=$(($mem_free0 - $mem_free1))
|
||
|
|
|
||
|
|
local total_size=0
|
||
|
|
for sm in $zram_sizes; do
|
||
|
|
local s=$(echo $sm | sed 's/M//')
|
||
|
|
total_size=$(($total_size + $s))
|
||
|
|
done
|
||
|
|
|
||
|
|
echo "zram used ${used_mem}M, zram disk sizes ${total_size}M"
|
||
|
|
|
||
|
|
local v=$((100 * $total_size / $used_mem))
|
||
|
|
|
||
|
|
if [ "$v" -lt 100 ]; then
|
||
|
|
echo "FAIL compression ratio: 0.$v:1"
|
||
|
|
ERR_CODE=-1
|
||
|
|
zram_cleanup
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
|
||
|
|
echo "zram compression ratio: $(echo "scale=2; $v / 100 " | bc):1: OK"
|
||
|
|
}
|
||
|
|
|
||
|
|
check_prereqs
|
||
|
|
zram_load
|
||
|
|
zram_max_streams
|
||
|
|
zram_compress_alg
|
||
|
|
zram_set_disksizes
|
||
|
|
zram_set_memlimit
|
||
|
|
zram_makefs
|
||
|
|
zram_mount
|
||
|
|
|
||
|
|
zram_fill_fs
|
||
|
|
zram_cleanup
|
||
|
|
zram_unload
|
||
|
|
|
||
|
|
if [ $ERR_CODE -ne 0 ]; then
|
||
|
|
echo "$TCID : [FAIL]"
|
||
|
|
else
|
||
|
|
echo "$TCID : [PASS]"
|
||
|
|
fi
|