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94 lines
2.5 KiB
94 lines
2.5 KiB
#!/bin/sh
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# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
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# Copyright (c) 2019 Petr Vorel <pvorel@suse.cz>
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# Author: Alexey Kodanev <alexey.kodanev@oracle.com>
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#
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# Test creates several zram devices with different filesystems on them.
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# It fills each device with zeros and checks that compression works.
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TST_CNT=7
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TST_TESTFUNC="do_test"
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TST_NEEDS_CMDS="awk bc dd"
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. zram_lib.sh
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# Test will create the following number of zram devices:
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dev_num=4
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# This is a list of parameters for zram devices.
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# Number of items must be equal to 'dev_num' parameter.
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zram_max_streams="2 3 5 8"
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FS_SIZE="402653184"
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FS_TYPE="btrfs"
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RAM_SIZE=$(awk '/MemTotal:/ {print $2}' /proc/meminfo)
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if [ "$RAM_SIZE" -lt 1048576 ]; then
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tst_res TINFO "not enough space for Btrfs"
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FS_SIZE="26214400"
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FS_TYPE="ext2"
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fi
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# The zram sysfs node 'disksize' value can be either in bytes,
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# or you can use mem suffixes. But in some old kernels, mem
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# suffixes are not supported, for example, in RHEL6.6GA's kernel
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# layer, it uses strict_strtoull() to parse disksize which does
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# not support mem suffixes, in some newer kernels, they use
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# memparse() which supports mem suffixes. So here we just use
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# bytes to make sure everything works correctly.
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zram_sizes="26214400 26214400 26214400 $FS_SIZE"
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zram_mem_limits="25M 25M 25M $((FS_SIZE/1024/1024))M"
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zram_filesystems="ext3 ext4 xfs $FS_TYPE"
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zram_algs="lzo lzo lzo lzo"
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zram_fill_fs()
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{
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for i in $(seq 0 $(($dev_num - 1))); do
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tst_res TINFO "filling zram$i (it can take long time)"
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local b=0
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while true; do
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dd conv=notrunc if=/dev/zero of=zram${i}/file \
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oflag=append count=1 bs=1024 status=none \
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>/dev/null 2>err.txt || break
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b=$(($b + 1))
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done
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if [ $b -eq 0 ]; then
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[ -s err.txt ] && tst_res TWARN "dd error: $(cat err.txt)"
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tst_brk TBROK "cannot fill zram $i"
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fi
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tst_res TPASS "zram$i was filled with '$b' KB"
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if [ ! -f "/sys/block/zram$i/mm_stat" ]; then
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if [ $i -eq 0 ]; then
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tst_res TCONF "zram compression ratio test requires zram mm_stat sysfs file"
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fi
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continue
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fi
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local compr_size=`awk '{print $2}' "/sys/block/zram$i/mm_stat"`
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local v=$((100 * 1024 * $b / $compr_size))
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local r=`echo "scale=2; $v / 100 " | bc`
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if [ "$v" -lt 100 ]; then
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tst_res TFAIL "compression ratio: $r:1"
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break
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fi
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tst_res TPASS "compression ratio: $r:1"
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done
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}
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do_test()
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{
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case $1 in
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1) zram_max_streams;;
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2) zram_compress_alg;;
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3) zram_set_disksizes;;
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4) zram_set_memlimit;;
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5) zram_makefs;;
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6) zram_mount;;
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7) zram_fill_fs;;
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esac
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}
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tst_run
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