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- #!/bin/sh
- # Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
- # Copyright (c) 2019 Petr Vorel <pvorel@suse.cz>
- # Author: Alexey Kodanev <alexey.kodanev@oracle.com>
- dev_makeswap=-1
- dev_mounted=-1
- TST_NEEDS_TMPDIR=1
- TST_SETUP="zram_load"
- TST_CLEANUP="zram_cleanup"
- . tst_test.sh
- 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${i}/reset
- done
- rmmod zram > /dev/null 2>&1
- }
- zram_load()
- {
- tst_res TINFO "create '$dev_num' zram device(s)"
- modprobe zram num_devices=$dev_num || \
- tst_brk TBROK "failed to insert zram module"
- dev_num_created=$(ls /dev/zram* | wc -w)
- if [ "$dev_num_created" -ne "$dev_num" ]; then
- tst_brk TFAIL "unexpected num of devices: $dev_num_created"
- else
- tst_res TPASS "test succeeded"
- fi
- }
- zram_max_streams()
- {
- if tst_kvcmp -lt "3.15" -o -ge "4.7"; then
- tst_res TCONF "The device attribute max_comp_streams was"\
- "introduced in kernel 3.15 and deprecated in 4.7"
- return
- fi
- tst_res TINFO "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 > $sys_path || \
- tst_brk TFAIL "failed to set '$max_s' to $sys_path"
- local max_streams=$(cat $sys_path)
- [ "$max_s" -ne "$max_streams" ] && \
- tst_brk TFAIL "can't set max_streams '$max_s', get $max_stream"
- i=$(($i + 1))
- tst_res TINFO "$sys_path = '$max_streams' ($i/$dev_num)"
- done
- tst_res TPASS "test succeeded"
- }
- zram_compress_alg()
- {
- if tst_kvcmp -lt "3.15"; then
- tst_res TCONF "device attribute comp_algorithm is"\
- "introduced since kernel v3.15, the running kernel"\
- "does not support it"
- return
- fi
- local i=0
- tst_res TINFO "test that we can set compression algorithm"
- local algs="$(sed 's/[][]//g' /sys/block/zram0/comp_algorithm)"
- tst_res TINFO "supported algs: $algs"
- local dev_max=$(($dev_num - 1))
- for i in $(seq 0 $dev_max); do
- for alg in $algs; do
- local sys_path="/sys/block/zram${i}/comp_algorithm"
- echo "$alg" > $sys_path || \
- tst_brk TFAIL "can't set '$alg' to $sys_path"
- tst_res TINFO "$sys_path = '$alg' ($i/$dev_max)"
- done
- done
- tst_res TPASS "test succeeded"
- }
- zram_set_disksizes()
- {
- local i=0
- local ds
- tst_res TINFO "set disk size to zram device(s)"
- for ds in $zram_sizes; do
- local sys_path="/sys/block/zram${i}/disksize"
- echo "$ds" > $sys_path || \
- tst_brk TFAIL "can't set '$ds' to $sys_path"
- i=$(($i + 1))
- tst_res TINFO "$sys_path = '$ds' ($i/$dev_num)"
- done
- tst_res TPASS "test succeeded"
- }
- zram_set_memlimit()
- {
- if tst_kvcmp -lt "3.18"; then
- tst_res TCONF "device attribute mem_limit is"\
- "introduced since kernel v3.18, the running kernel"\
- "does not support it"
- return
- fi
- local i=0
- local ds
- tst_res TINFO "set memory limit to zram device(s)"
- for ds in $zram_mem_limits; do
- local sys_path="/sys/block/zram${i}/mem_limit"
- echo "$ds" > $sys_path || \
- tst_brk TFAIL "can't set '$ds' to $sys_path"
- i=$(($i + 1))
- tst_res TINFO "$sys_path = '$ds' ($i/$dev_num)"
- done
- tst_res TPASS "test succeeded"
- }
- zram_makeswap()
- {
- tst_res TINFO "make swap with zram device(s)"
- tst_require_cmds mkswap swapon swapoff
- local i=0
- for i in $(seq 0 $(($dev_num - 1))); do
- ROD mkswap /dev/zram$i
- ROD swapon /dev/zram$i
- tst_res TINFO "done with /dev/zram$i"
- dev_makeswap=$i
- done
- tst_res TPASS "making zram swap succeeded"
- }
- zram_swapoff()
- {
- tst_require_cmds swapoff
- local i
- for i in $(seq 0 $dev_makeswap); do
- ROD swapoff /dev/zram$i
- done
- dev_makeswap=-1
- tst_res TPASS "swapoff completed"
- }
- zram_makefs()
- {
- tst_require_cmds mkfs
- local i=0
- for fs in $zram_filesystems; do
- # if requested fs not supported default it to ext2
- tst_supported_fs $fs 2> /dev/null || fs=ext2
- tst_res TINFO "make $fs filesystem on /dev/zram$i"
- mkfs.$fs /dev/zram$i > err.log 2>&1
- if [ $? -ne 0 ]; then
- cat err.log
- tst_brk TFAIL "failed to make $fs on /dev/zram$i"
- fi
- i=$(($i + 1))
- done
- tst_res TPASS "zram_makefs succeeded"
- }
- zram_mount()
- {
- local i=0
- for i in $(seq 0 $(($dev_num - 1))); do
- tst_res TINFO "mount /dev/zram$i"
- mkdir zram$i
- ROD mount /dev/zram$i zram$i
- dev_mounted=$i
- done
- tst_res TPASS "mount of zram device(s) succeeded"
- }
- modinfo zram > /dev/null 2>&1 ||
- tst_brk TCONF "zram not configured in kernel"
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