Merge pull request #17417 from anitazha/more_systoomd
More systemd-oomd tweaks
This commit is contained in:
commit
15a6c4bf8b
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@ -117,6 +117,8 @@ static int parse_argv(int argc, char *argv[]) {
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static int run(int argc, char *argv[]) {
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_cleanup_(notify_on_cleanup) const char *notify_msg = NULL;
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_cleanup_(manager_freep) Manager *m = NULL;
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_cleanup_free_ char *swap = NULL;
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unsigned long long s = 0;
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int r;
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log_setup_service();
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@ -131,8 +133,17 @@ static int run(int argc, char *argv[]) {
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/* Do some basic requirement checks for running systemd-oomd. It's not exhaustive as some of the other
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* requirements do not have a reliable means to check for in code. */
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if (access("/proc/swaps", F_OK) < 0)
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return log_error_errno(errno, "Swap not enabled: %m");
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/* SwapTotal is always available in /proc/meminfo and defaults to 0, even on swap-disabled kernels. */
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r = get_proc_field("/proc/meminfo", "SwapTotal", WHITESPACE, &swap);
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if (r < 0)
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return log_error_errno(r, "Failed to get SwapTotal from /proc/meminfo: %m");
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r = safe_atollu(swap, &s);
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if (r < 0)
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return log_error_errno(r, "Failed to parse SwapTotal from /proc/meminfo: %s: %m", swap);
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if (s == 0)
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return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "Requires swap to operate");
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if (!is_pressure_supported())
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return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "Pressure Stall Information (PSI) is not supported");
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@ -57,7 +57,7 @@ static void test_oomd_cgroup_kill(void) {
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/* If we don't have permissions to set xattrs we're likely in a userns or missing capabilities */
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r = cg_set_xattr(SYSTEMD_CGROUP_CONTROLLER, cgroup, "user.oomd_test", "test", 4, 0);
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if (IN_SET(r, -EPERM, -ENOTSUP))
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if (ERRNO_IS_PRIVILEGE(r) || ERRNO_IS_NOT_SUPPORTED(r))
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return (void) log_tests_skipped("Cannot set user xattrs");
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/* Do this twice to also check the increment behavior on the xattrs */
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@ -0,0 +1 @@
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../TEST-01-BASIC/Makefile
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@ -0,0 +1,48 @@
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#!/usr/bin/env bash
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set -e
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TEST_DESCRIPTION="systemd-oomd Memory Pressure Test"
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. $TEST_BASE_DIR/test-functions
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check_result_nspawn() {
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local ret=1
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local journald_report=""
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local pids=""
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[[ -e $1/testok ]] && ret=0
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if [[ -e $1/skipped ]]; then
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echo "TEST-56-OOMD was skipped:"
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cat $1/skipped
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ret=0
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fi
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[[ -f $1/failed ]] && cp -a $1/failed $TESTDIR
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save_journal $1/var/log/journal
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[[ -f $TESTDIR/failed ]] && cat $TESTDIR/failed
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echo $JOURNAL_LIST
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test -s $TESTDIR/failed && ret=$(($ret+1))
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[ -n "$TIMED_OUT" ] && ret=$(($ret+1))
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check_asan_reports "$1" || ret=$(($ret+1))
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_umount_dir $initdir
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return $ret
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}
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check_result_qemu() {
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local ret=1
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mount_initdir
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[[ -e $initdir/testok ]] && ret=0
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if [[ -e $initdir/skipped ]]; then
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echo "TEST-56-OOMD was skipped:"
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cat $initdir/skipped
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ret=0
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fi
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[[ -f $initdir/failed ]] && cp -a $initdir/failed $TESTDIR
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save_journal $initdir/var/log/journal
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check_asan_reports "$initdir" || ret=$(($ret+1))
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_umount_dir $initdir
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[[ -f $TESTDIR/failed ]] && cat $TESTDIR/failed
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echo $JOURNAL_LIST
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test -s $TESTDIR/failed && ret=$(($ret+1))
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[ -n "$TIMED_OUT" ] && ret=$(($ret+1))
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return $ret
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}
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do_test "$@" 56
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@ -65,6 +65,7 @@ BASICTOOLS=(
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echo
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env
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false
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getconf
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getent
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getfacl
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grep
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@ -0,0 +1,34 @@
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#!/usr/bin/env bash
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set -eu -o pipefail
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PAGE_SIZE=$(getconf PAGE_SIZE)
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BLOAT_ITERATION_TARGET=$(( 100 << 20 )) # 100 MB
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BLOAT_HOLDER=()
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PID="$$"
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function bloat {
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local set_size=$(cat "/proc/$PID/statm" | cut -d " " -f2)
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local mem_usage=$(( "$set_size" * "$PAGE_SIZE" ))
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local target_mem_size=$(( "$mem_usage" + "$1" ))
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BLOAT_HOLDER=()
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while [[ "$mem_usage" -lt "$target_mem_size" ]]; do
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echo "target $target_mem_size"
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echo "mem usage $mem_usage"
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BLOAT_HOLDER+=( $(printf "%0.sg" {1..1000000}) )
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set_size=$(cat "/proc/$PID/statm" | cut -d " " -f2)
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mem_usage=$(( "$set_size" * "$PAGE_SIZE" ))
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done
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}
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function run {
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local arr=()
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while [[ true ]]; do
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bloat "$BLOAT_ITERATION_TARGET"
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arr+=( "$BLOAT_HOLDER" )
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sleep 1
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done
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}
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run
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@ -0,0 +1,7 @@
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[Unit]
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Description=TESTSUITE-56-OOMD
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[Service]
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ExecStartPre=rm -f /failed /skipped /testok
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ExecStart=/usr/lib/systemd/tests/testdata/units/%N.sh
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Type=oneshot
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@ -0,0 +1,70 @@
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#!/usr/bin/env bash
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set -ex
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set -o pipefail
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systemd-analyze log-level debug
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systemd-analyze log-target console
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# Loose checks to ensure the environment has the necessary features for systemd-oomd
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[[ "$( awk '/SwapTotal/ { print $2 }' /proc/meminfo )" != "0" ]] || echo "no swap" >> /skipped
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[[ -e /proc/pressure ]] || echo "no PSI" >> /skipped
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cgroup_type=$(stat -fc %T /sys/fs/cgroup/)
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if [[ "$cgroup_type" != *"cgroup2"* ]] && [[ "$cgroup_type" != *"0x63677270"* ]]; then
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echo "no cgroup2" >> /skipped
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fi
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[[ -e /skipped ]] && exit 0 || true
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cat > /etc/systemd/system/testworkload.slice <<EOF
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[Slice]
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CPUAccounting=true
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MemoryAccounting=true
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IOAccounting=true
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TasksAccounting=true
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ManagedOOMMemoryPressure=kill
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ManagedOOMMemoryPressureLimitPercent=50%
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EOF
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# Create a lot of memory pressure by setting memory.high to a very small value
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cat > /etc/systemd/system/testbloat.service <<EOF
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[Service]
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MemoryHigh=2M
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Slice=testworkload.slice
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ExecStart=/usr/lib/systemd/tests/testdata/units/testsuite-56-slowgrowth.sh
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EOF
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# This generates no memory pressure
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cat > /etc/systemd/system/testchill.service <<EOF
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[Service]
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MemoryHigh=2M
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Slice=testworkload.slice
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ExecStart=sleep infinity
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EOF
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systemctl daemon-reload
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systemctl start testbloat.service
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systemctl start testchill.service
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# Verify systemd-oomd is monitoring the expected units
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oomctl | grep "/testworkload.slice"
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oomctl | grep "50%"
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# systemd-oomd watches for elevated pressure for 30 seconds before acting.
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# It can take time to build up pressure so either wait 5 minutes or for the service to fail.
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timeout=$(date -ud "5 minutes" +%s)
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while [[ $(date -u +%s) -le $timeout ]]; do
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if ! systemctl status testbloat.service; then
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break
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fi
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sleep 15
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done
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# testbloat should be killed and testchill should be fine
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if systemctl status testbloat.service; then exit 42; fi
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if ! systemctl status testchill.service; then exit 24; fi
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systemd-analyze log-level info
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echo OK > /testok
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exit 0
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