| Message ID | 1439843981-28767-1-git-send-email-naresh.kamboju@linaro.org |
|---|---|
| State | New |
| Headers | show |
Hi Shuah Khan, On 18 August 2015 at 03:14, Shuah Khan <shuahkh@osg.samsung.com> wrote: > On 08/17/2015 02:39 PM, naresh.kamboju@linaro.org wrote: >> From: Naresh Kamboju <naresh.kamboju@linaro.org> > > Are you using git send-email to send this patch? Not sure why > I see this From and the one below. I do use git send-email to send this patch. From: Naresh is generated from git send-patch. > >> >> zram.sh: sanity check of CONFIG_ZRAM and run zram01.sh and zram02.sh >> zram01.sh: creates general purpose ram disks with different filesystems >> zram02.sh: creates block device for swap >> zram_lib.sh: create library with initialization/cleanup functions >> README: ZRAM introduction and Kconfig required. >> Makefile: To run zram tests > > Could please write a proper commit message instead of list of files > and description. Done and sent v3 patch. > >> >> From: Alexey Kodanev <alexey.kodanev@oracle.com> > > Same comment here. The original author of this patch is "Alexey Kodanev". who submitted patch on LTP. I have updated and modified to fit into selftests. That is the reason for adding From: Alexey Kodanev again in commit message. However, I have added him in CC for v3 patch set. Best regards Naresh Kamboju > >> CC: Shuah Khan <shuahkh@osg.samsung.com> >> CC: Tyler Baker <tyler.baker@linaro.org> >> CC: Milosz Wasilewski <milosz.wasilewski@linaro.org> >> Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org> >> Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> >> --- >> tools/testing/selftests/Makefile | 1 + >> tools/testing/selftests/zram/Makefile | 12 ++ >> tools/testing/selftests/zram/README | 40 ++++++ >> tools/testing/selftests/zram/zram.sh | 22 +++ >> tools/testing/selftests/zram/zram01.sh | 98 ++++++++++++++ >> tools/testing/selftests/zram/zram02.sh | 53 ++++++++ >> tools/testing/selftests/zram/zram_lib.sh | 222 +++++++++++++++++++++++++++++++ >> 7 files changed, 448 insertions(+) >> create mode 100644 tools/testing/selftests/zram/Makefile >> create mode 100644 tools/testing/selftests/zram/README >> create mode 100755 tools/testing/selftests/zram/zram.sh >> create mode 100755 tools/testing/selftests/zram/zram01.sh >> create mode 100755 tools/testing/selftests/zram/zram02.sh >> create mode 100755 tools/testing/selftests/zram/zram_lib.sh >> >> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile >> index 24ae9e8..9763dd9 100644 >> --- a/tools/testing/selftests/Makefile >> +++ b/tools/testing/selftests/Makefile >> @@ -22,6 +22,7 @@ endif >> TARGETS += user >> TARGETS += vm >> TARGETS += x86 >> +TARGETS += zram >> #Please keep the TARGETS list alphabetically sorted >> # Run "make quicktest=1 run_tests" or >> # "make quicktest=1 kselftest from top level Makefile >> diff --git a/tools/testing/selftests/zram/Makefile b/tools/testing/selftests/zram/Makefile >> new file mode 100644 >> index 0000000..ec45513 >> --- /dev/null >> +++ b/tools/testing/selftests/zram/Makefile >> @@ -0,0 +1,12 @@ >> +all: >> + >> +TEST_PROGS := zram.sh >> +TEST_FILES := zram01.sh zram02.sh zram_lib.sh >> + >> +include ../lib.mk >> + >> +run_tests: >> + @/bin/bash ./zram.sh >> + >> +clean: >> + $(RM) err.log >> diff --git a/tools/testing/selftests/zram/README b/tools/testing/selftests/zram/README >> new file mode 100644 >> index 0000000..eb17917 >> --- /dev/null >> +++ b/tools/testing/selftests/zram/README >> @@ -0,0 +1,40 @@ >> +zram: Compressed RAM based block devices >> +---------------------------------------- >> +* Introduction >> + >> +The zram module creates RAM based block devices named /dev/zram<id> >> +(<id> = 0, 1, ...). Pages written to these disks are compressed and stored >> +in memory itself. These disks allow very fast I/O and compression provides >> +good amounts of memory savings. Some of the usecases include /tmp storage, >> +use as swap disks, various caches under /var and maybe many more :) >> + >> +Statistics for individual zram devices are exported through sysfs nodes at >> +/sys/block/zram<id>/ >> + >> +Kconfig required: >> +CONFIG_ZRAM=y >> +CONFIG_ZRAM_LZ4_COMPRESS=y >> +CONFIG_ZPOOL=y >> +CONFIG_ZSMALLOC=y >> + >> +ZRAM Testcases >> +-------------- >> +zram_lib.sh: create library with initialization/cleanup functions >> +zram.sh: For sanity check of CONFIG_ZRAM and to run zram01 and zram02 >> + >> +Two functional tests: zram01 and zram02: >> +zram01.sh: creates general purpose ram disks with ext4 filesystems >> +zram02.sh: creates block device for swap >> + >> +Commands required for testing: >> + - bc >> + - dd >> + - free >> + - awk >> + - mkswap >> + - swapon >> + - swapoff >> + - mkfs/ mkfs.ext4 >> + >> +For more information please refer: >> +kernel-source-tree/Documentation/blockdev/zram.txt >> diff --git a/tools/testing/selftests/zram/zram.sh b/tools/testing/selftests/zram/zram.sh >> new file mode 100755 >> index 0000000..be219fd >> --- /dev/null >> +++ b/tools/testing/selftests/zram/zram.sh >> @@ -0,0 +1,22 @@ >> +#!/bin/bash >> +TCID="zram.sh" >> + >> +run_zram () { >> +echo "--------------------" >> +echo "running zram tests" >> +echo "--------------------" >> +./zram01.sh >> +./zram02.sh >> +} >> + >> +# check zram module exists >> +MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko >> +if [ -f $MODULE_PATH ]; then >> + run_zram >> +elif [ -b /dev/zram0 ]; then >> + run_zram >> +else >> + echo "$TCID : No zram.ko module or /dev/zram0 device file not found" >> + echo "$TCID : CONFIG_ZRAM is not set" >> + exit 1 >> +fi >> diff --git a/tools/testing/selftests/zram/zram01.sh b/tools/testing/selftests/zram/zram01.sh >> new file mode 100755 >> index 0000000..2a2475d >> --- /dev/null >> +++ b/tools/testing/selftests/zram/zram01.sh >> @@ -0,0 +1,98 @@ >> +#!/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" >> +} >> + >> +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 >> diff --git a/tools/testing/selftests/zram/zram02.sh b/tools/testing/selftests/zram/zram02.sh >> new file mode 100755 >> index 0000000..96e82dc >> --- /dev/null >> +++ b/tools/testing/selftests/zram/zram02.sh >> @@ -0,0 +1,53 @@ >> +#!/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 checks that we can create swap zram device. >> +# >> +# Author: Alexey Kodanev <alexey.kodanev@oracle.com> >> +# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> >> + >> +TCID="zram02" >> +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="1048576" # 1M >> +zram_mem_limits="1M" >> + >> +zram_load >> +zram_max_streams >> +zram_set_disksizes >> +zram_set_memlimit >> +zram_makeswap >> +zram_swapoff >> +zram_cleanup >> +zram_unload >> + >> +if [ $ERR_CODE -ne 0 ]; then >> + echo "$TCID : [FAIL]" >> +else >> + echo "$TCID : [PASS]" >> +fi >> diff --git a/tools/testing/selftests/zram/zram_lib.sh b/tools/testing/selftests/zram/zram_lib.sh >> new file mode 100755 >> index 0000000..3b6abf1 >> --- /dev/null >> +++ b/tools/testing/selftests/zram/zram_lib.sh >> @@ -0,0 +1,222 @@ >> +#!/bin/sh >> +# 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. >> +# >> +# Author: Alexey Kodanev <alexey.kodanev@oracle.com> >> +# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> >> + >> +MODULE=0 >> +dev_makeswap=-1 >> +dev_mounted=-1 >> + >> +trap INT >> + >> +zram_cleanup() >> +{ >> + echo "zram cleanup" >> + local i= >> + for i in $(seq 0 $dev_makeswap); do >> + swapoff /dev/zram$i >> + done >> + >> + for i in $(seq 0 $dev_mounted); do >> + umount /dev/zram$i >> + done >> + >> + for i in $(seq 0 $(($dev_num - 1))); do >> + echo 1 > /sys/block/zram${i}/reset >> + rm -rf zram$i >> + done >> + >> +} >> + >> +zram_unload() >> +{ >> + if [ $MODULE -ne 0 ] ; then >> + echo "zram rmmod zram" >> + rmmod zram > /dev/null 2>&1 >> + fi >> +} >> + >> +zram_load() >> +{ >> + # check zram module exists >> + MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko >> + if [ -f $MODULE_PATH ]; then >> + MODULE=1 >> + echo "create '$dev_num' zram device(s)" >> + modprobe zram num_devices=$dev_num >> + if [ $? -ne 0 ]; then >> + echo "failed to insert zram module" >> + exit 1 >> + fi >> + >> + dev_num_created=$(ls /dev/zram* | wc -w) >> + >> + if [ "$dev_num_created" -ne "$dev_num" ]; then >> + echo "unexpected num of devices: $dev_num_created" >> + ERR_CODE=-1 >> + else >> + echo "zram load module successful" >> + fi >> + elif [ -b /dev/zram0 ]; then >> + echo "/dev/zram0 device file found: OK" >> + else >> + echo "ERROR: No zram.ko module or no /dev/zram0 device found" >> + echo "$TCID : CONFIG_ZRAM is not set" >> + exit 1 >> + fi >> +} >> + >> +zram_max_streams() >> +{ >> + echo "set max_comp_streams to zram device(s)" >> + >> + local i=0 >> + for max_s in $zram_max_streams; do >> + local sys_path="/sys/block/zram${i}/max_comp_streams" >> + echo $max_s > $sys_path || \ >> + echo "FAIL failed to set '$max_s' to $sys_path" >> + sleep 1 >> + local max_streams=$(cat $sys_path) >> + >> + [ "$max_s" -ne "$max_streams" ] && \ >> + echo "FAIL can't set max_streams '$max_s', get $max_stream" >> + >> + i=$(($i + 1)) >> + echo "$sys_path = '$max_streams' ($i/$dev_num)" >> + done >> + >> + echo "zram max streams: OK" >> +} >> + >> +zram_compress_alg() >> +{ >> + echo "test that we can set compression algorithm" >> + >> + local algs=$(cat /sys/block/zram0/comp_algorithm) >> + echo "supported algs: $algs" >> + local i=0 >> + for alg in $zram_algs; do >> + local sys_path="/sys/block/zram${i}/comp_algorithm" >> + echo "$alg" > $sys_path || \ >> + echo "FAIL can't set '$alg' to $sys_path" >> + i=$(($i + 1)) >> + echo "$sys_path = '$alg' ($i/$dev_num)" >> + done >> + >> + echo "zram set compression algorithm: OK" >> +} >> + >> +zram_set_disksizes() >> +{ >> + echo "set disk size to zram device(s)" >> + local i=0 >> + for ds in $zram_sizes; do >> + local sys_path="/sys/block/zram${i}/disksize" >> + echo "$ds" > $sys_path || \ >> + echo "FAIL can't set '$ds' to $sys_path" >> + >> + i=$(($i + 1)) >> + echo "$sys_path = '$ds' ($i/$dev_num)" >> + done >> + >> + echo "zram set disksizes: OK" >> +} >> + >> +zram_set_memlimit() >> +{ >> + echo "set memory limit to zram device(s)" >> + >> + local i=0 >> + for ds in $zram_mem_limits; do >> + local sys_path="/sys/block/zram${i}/mem_limit" >> + echo "$ds" > $sys_path || \ >> + echo "FAIL can't set '$ds' to $sys_path" >> + >> + i=$(($i + 1)) >> + echo "$sys_path = '$ds' ($i/$dev_num)" >> + done >> + >> + echo "zram set memory limit: OK" >> +} >> + >> +zram_makeswap() >> +{ >> + echo "make swap with zram device(s)" >> + local i=0 >> + for i in $(seq 0 $(($dev_num - 1))); do >> + mkswap /dev/zram$i > err.log 2>&1 >> + if [ $? -ne 0 ]; then >> + cat err.log >> + echo "FAIL mkswap /dev/zram$1 failed" >> + fi >> + >> + swapon /dev/zram$i > err.log 2>&1 >> + if [ $? -ne 0 ]; then >> + cat err.log >> + echo "FAIL swapon /dev/zram$1 failed" >> + fi >> + >> + echo "done with /dev/zram$i" >> + dev_makeswap=$i >> + done >> + >> + echo "zram making zram mkswap and swapon: OK" >> +} >> + >> +zram_swapoff() >> +{ >> + local i= >> + for i in $(seq 0 $dev_makeswap); do >> + swapoff /dev/zram$i > err.log 2>&1 >> + if [ $? -ne 0 ]; then >> + cat err.log >> + echo "FAIL swapoff /dev/zram$i failed" >> + fi >> + done >> + dev_makeswap=-1 >> + >> + echo "zram swapoff: OK" >> +} >> + >> +zram_makefs() >> +{ >> + local i=0 >> + for fs in $zram_filesystems; do >> + # if requested fs not supported default it to ext2 >> + which mkfs.$fs > /dev/null 2>&1 || fs=ext2 >> + >> + echo "make $fs filesystem on /dev/zram$i" >> + mkfs.$fs /dev/zram$i > err.log 2>&1 >> + if [ $? -ne 0 ]; then >> + cat err.log >> + echo "FAIL failed to make $fs on /dev/zram$i" >> + fi >> + i=$(($i + 1)) >> + echo "zram mkfs.$fs: OK" >> + done >> +} >> + >> +zram_mount() >> +{ >> + local i=0 >> + for i in $(seq 0 $(($dev_num - 1))); do >> + echo "mount /dev/zram$i" >> + mkdir zram$i >> + mount /dev/zram$i zram$i > /dev/null || \ >> + echo "FAIL mount /dev/zram$i failed" >> + dev_mounted=$i >> + done >> + >> + echo "zram mount of zram device(s): OK" >> +} >> > > > -- > Shuah Khan > Sr. Linux Kernel Developer > Open Source Innovation Group > Samsung Research America (Silicon Valley) > shuahkh@osg.samsung.com | (970) 217-8978 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 24ae9e8..9763dd9 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -22,6 +22,7 @@ endif TARGETS += user TARGETS += vm TARGETS += x86 +TARGETS += zram #Please keep the TARGETS list alphabetically sorted # Run "make quicktest=1 run_tests" or # "make quicktest=1 kselftest from top level Makefile diff --git a/tools/testing/selftests/zram/Makefile b/tools/testing/selftests/zram/Makefile new file mode 100644 index 0000000..ec45513 --- /dev/null +++ b/tools/testing/selftests/zram/Makefile @@ -0,0 +1,12 @@ +all: + +TEST_PROGS := zram.sh +TEST_FILES := zram01.sh zram02.sh zram_lib.sh + +include ../lib.mk + +run_tests: + @/bin/bash ./zram.sh + +clean: + $(RM) err.log diff --git a/tools/testing/selftests/zram/README b/tools/testing/selftests/zram/README new file mode 100644 index 0000000..eb17917 --- /dev/null +++ b/tools/testing/selftests/zram/README @@ -0,0 +1,40 @@ +zram: Compressed RAM based block devices +---------------------------------------- +* Introduction + +The zram module creates RAM based block devices named /dev/zram<id> +(<id> = 0, 1, ...). Pages written to these disks are compressed and stored +in memory itself. These disks allow very fast I/O and compression provides +good amounts of memory savings. Some of the usecases include /tmp storage, +use as swap disks, various caches under /var and maybe many more :) + +Statistics for individual zram devices are exported through sysfs nodes at +/sys/block/zram<id>/ + +Kconfig required: +CONFIG_ZRAM=y +CONFIG_ZRAM_LZ4_COMPRESS=y +CONFIG_ZPOOL=y +CONFIG_ZSMALLOC=y + +ZRAM Testcases +-------------- +zram_lib.sh: create library with initialization/cleanup functions +zram.sh: For sanity check of CONFIG_ZRAM and to run zram01 and zram02 + +Two functional tests: zram01 and zram02: +zram01.sh: creates general purpose ram disks with ext4 filesystems +zram02.sh: creates block device for swap + +Commands required for testing: + - bc + - dd + - free + - awk + - mkswap + - swapon + - swapoff + - mkfs/ mkfs.ext4 + +For more information please refer: +kernel-source-tree/Documentation/blockdev/zram.txt diff --git a/tools/testing/selftests/zram/zram.sh b/tools/testing/selftests/zram/zram.sh new file mode 100755 index 0000000..be219fd --- /dev/null +++ b/tools/testing/selftests/zram/zram.sh @@ -0,0 +1,22 @@ +#!/bin/bash +TCID="zram.sh" + +run_zram () { +echo "--------------------" +echo "running zram tests" +echo "--------------------" +./zram01.sh +./zram02.sh +} + +# check zram module exists +MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko +if [ -f $MODULE_PATH ]; then + run_zram +elif [ -b /dev/zram0 ]; then + run_zram +else + echo "$TCID : No zram.ko module or /dev/zram0 device file not found" + echo "$TCID : CONFIG_ZRAM is not set" + exit 1 +fi diff --git a/tools/testing/selftests/zram/zram01.sh b/tools/testing/selftests/zram/zram01.sh new file mode 100755 index 0000000..2a2475d --- /dev/null +++ b/tools/testing/selftests/zram/zram01.sh @@ -0,0 +1,98 @@ +#!/bin/bash +# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# Test creates several zram devices with different filesystems on them. +# It fills each device with zeros and checks that compression works. +# +# Author: Alexey Kodanev <alexey.kodanev@oracle.com> +# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> + +TCID="zram01" +ERR_CODE=0 + +. ./zram_lib.sh + +# Test will create the following number of zram devices: +dev_num=1 +# This is a list of parameters for zram devices. +# Number of items must be equal to 'dev_num' parameter. +zram_max_streams="2" + +# The zram sysfs node 'disksize' value can be either in bytes, +# or you can use mem suffixes. But in some old kernels, mem +# suffixes are not supported, for example, in RHEL6.6GA's kernel +# layer, it uses strict_strtoull() to parse disksize which does +# not support mem suffixes, in some newer kernels, they use +# memparse() which supports mem suffixes. So here we just use +# bytes to make sure everything works correctly. +zram_sizes="2097152" # 2MB +zram_mem_limits="2M" +zram_filesystems="ext4" +zram_algs="lzo" + +zram_fill_fs() +{ + local mem_free0=$(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" +} + +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 diff --git a/tools/testing/selftests/zram/zram02.sh b/tools/testing/selftests/zram/zram02.sh new file mode 100755 index 0000000..96e82dc --- /dev/null +++ b/tools/testing/selftests/zram/zram02.sh @@ -0,0 +1,53 @@ +#!/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 checks that we can create swap zram device. +# +# Author: Alexey Kodanev <alexey.kodanev@oracle.com> +# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> + +TCID="zram02" +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="1048576" # 1M +zram_mem_limits="1M" + +zram_load +zram_max_streams +zram_set_disksizes +zram_set_memlimit +zram_makeswap +zram_swapoff +zram_cleanup +zram_unload + +if [ $ERR_CODE -ne 0 ]; then + echo "$TCID : [FAIL]" +else + echo "$TCID : [PASS]" +fi diff --git a/tools/testing/selftests/zram/zram_lib.sh b/tools/testing/selftests/zram/zram_lib.sh new file mode 100755 index 0000000..3b6abf1 --- /dev/null +++ b/tools/testing/selftests/zram/zram_lib.sh @@ -0,0 +1,222 @@ +#!/bin/sh +# 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. +# +# Author: Alexey Kodanev <alexey.kodanev@oracle.com> +# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> + +MODULE=0 +dev_makeswap=-1 +dev_mounted=-1 + +trap INT + +zram_cleanup() +{ + echo "zram cleanup" + local i= + for i in $(seq 0 $dev_makeswap); do + swapoff /dev/zram$i + done + + for i in $(seq 0 $dev_mounted); do + umount /dev/zram$i + done + + for i in $(seq 0 $(($dev_num - 1))); do + echo 1 > /sys/block/zram${i}/reset + rm -rf zram$i + done + +} + +zram_unload() +{ + if [ $MODULE -ne 0 ] ; then + echo "zram rmmod zram" + rmmod zram > /dev/null 2>&1 + fi +} + +zram_load() +{ + # check zram module exists + MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko + if [ -f $MODULE_PATH ]; then + MODULE=1 + echo "create '$dev_num' zram device(s)" + modprobe zram num_devices=$dev_num + if [ $? -ne 0 ]; then + echo "failed to insert zram module" + exit 1 + fi + + dev_num_created=$(ls /dev/zram* | wc -w) + + if [ "$dev_num_created" -ne "$dev_num" ]; then + echo "unexpected num of devices: $dev_num_created" + ERR_CODE=-1 + else + echo "zram load module successful" + fi + elif [ -b /dev/zram0 ]; then + echo "/dev/zram0 device file found: OK" + else + echo "ERROR: No zram.ko module or no /dev/zram0 device found" + echo "$TCID : CONFIG_ZRAM is not set" + exit 1 + fi +} + +zram_max_streams() +{ + echo "set max_comp_streams to zram device(s)" + + local i=0 + for max_s in $zram_max_streams; do + local sys_path="/sys/block/zram${i}/max_comp_streams" + echo $max_s > $sys_path || \ + echo "FAIL failed to set '$max_s' to $sys_path" + sleep 1 + local max_streams=$(cat $sys_path) + + [ "$max_s" -ne "$max_streams" ] && \ + echo "FAIL can't set max_streams '$max_s', get $max_stream" + + i=$(($i + 1)) + echo "$sys_path = '$max_streams' ($i/$dev_num)" + done + + echo "zram max streams: OK" +} + +zram_compress_alg() +{ + echo "test that we can set compression algorithm" + + local algs=$(cat /sys/block/zram0/comp_algorithm) + echo "supported algs: $algs" + local i=0 + for alg in $zram_algs; do + local sys_path="/sys/block/zram${i}/comp_algorithm" + echo "$alg" > $sys_path || \ + echo "FAIL can't set '$alg' to $sys_path" + i=$(($i + 1)) + echo "$sys_path = '$alg' ($i/$dev_num)" + done + + echo "zram set compression algorithm: OK" +} + +zram_set_disksizes() +{ + echo "set disk size to zram device(s)" + local i=0 + for ds in $zram_sizes; do + local sys_path="/sys/block/zram${i}/disksize" + echo "$ds" > $sys_path || \ + echo "FAIL can't set '$ds' to $sys_path" + + i=$(($i + 1)) + echo "$sys_path = '$ds' ($i/$dev_num)" + done + + echo "zram set disksizes: OK" +} + +zram_set_memlimit() +{ + echo "set memory limit to zram device(s)" + + local i=0 + for ds in $zram_mem_limits; do + local sys_path="/sys/block/zram${i}/mem_limit" + echo "$ds" > $sys_path || \ + echo "FAIL can't set '$ds' to $sys_path" + + i=$(($i + 1)) + echo "$sys_path = '$ds' ($i/$dev_num)" + done + + echo "zram set memory limit: OK" +} + +zram_makeswap() +{ + echo "make swap with zram device(s)" + local i=0 + for i in $(seq 0 $(($dev_num - 1))); do + mkswap /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL mkswap /dev/zram$1 failed" + fi + + swapon /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL swapon /dev/zram$1 failed" + fi + + echo "done with /dev/zram$i" + dev_makeswap=$i + done + + echo "zram making zram mkswap and swapon: OK" +} + +zram_swapoff() +{ + local i= + for i in $(seq 0 $dev_makeswap); do + swapoff /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL swapoff /dev/zram$i failed" + fi + done + dev_makeswap=-1 + + echo "zram swapoff: OK" +} + +zram_makefs() +{ + local i=0 + for fs in $zram_filesystems; do + # if requested fs not supported default it to ext2 + which mkfs.$fs > /dev/null 2>&1 || fs=ext2 + + echo "make $fs filesystem on /dev/zram$i" + mkfs.$fs /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL failed to make $fs on /dev/zram$i" + fi + i=$(($i + 1)) + echo "zram mkfs.$fs: OK" + done +} + +zram_mount() +{ + local i=0 + for i in $(seq 0 $(($dev_num - 1))); do + echo "mount /dev/zram$i" + mkdir zram$i + mount /dev/zram$i zram$i > /dev/null || \ + echo "FAIL mount /dev/zram$i failed" + dev_mounted=$i + done + + echo "zram mount of zram device(s): OK" +}