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systemd/test/units/testsuite-56.sh

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#!/usr/bin/env bash
set -ex
set -o pipefail
systemd-analyze log-level debug
systemd-analyze log-target console
# Loose checks to ensure the environment has the necessary features for systemd-oomd
[[ -e /proc/pressure ]] || echo "no PSI" >> /skipped
cgroup_type=$(stat -fc %T /sys/fs/cgroup/)
if [[ "$cgroup_type" != *"cgroup2"* ]] && [[ "$cgroup_type" != *"0x63677270"* ]]; then
echo "no cgroup2" >> /skipped
fi
[[ -e /skipped ]] && exit 0 || true
rm -rf /etc/systemd/system/testsuite-56-testbloat.service.d
echo "DefaultMemoryPressureDurationSec=5s" >> /etc/systemd/oomd.conf
systemctl start testsuite-56-testchill.service
systemctl start testsuite-56-testbloat.service
# Verify systemd-oomd is monitoring the expected units
oomctl | grep "/testsuite-56-workload.slice"
oomctl | grep "1.00%"
oomctl | grep "Default Memory Pressure Duration: 5s"
# systemd-oomd watches for elevated pressure for 5 seconds before acting.
# It can take time to build up pressure so either wait 2 minutes or for the service to fail.
timeout=$(date -ud "2 minutes" +%s)
while [[ $(date -u +%s) -le $timeout ]]; do
if ! systemctl status testsuite-56-testbloat.service; then
break
fi
sleep 5
done
# testbloat should be killed and testchill should be fine
if systemctl status testsuite-56-testbloat.service; then exit 42; fi
if ! systemctl status testsuite-56-testchill.service; then exit 24; fi
# only run this portion of the test if we can set xattrs
if setfattr -n user.xattr_test -v 1 /sys/fs/cgroup/; then
sleep 120 # wait for systemd-oomd kill cool down and elevated memory pressure to come down
mkdir -p /etc/systemd/system/testsuite-56-testbloat.service.d/
echo "[Service]" > /etc/systemd/system/testsuite-56-testbloat.service.d/override.conf
echo "ManagedOOMPreference=avoid" >> /etc/systemd/system/testsuite-56-testbloat.service.d/override.conf
systemctl daemon-reload
systemctl start testsuite-56-testchill.service
systemctl start testsuite-56-testmunch.service
systemctl start testsuite-56-testbloat.service
timeout=$(date -ud "2 minutes" +%s)
while [[ $(date -u +%s) -le $timeout ]]; do
if ! systemctl status testsuite-56-testmunch.service; then
break
fi
sleep 5
done
# testmunch should be killed since testbloat had the avoid xattr on it
if ! systemctl status testsuite-56-testbloat.service; then exit 25; fi
if systemctl status testsuite-56-testmunch.service; then exit 43; fi
if ! systemctl status testsuite-56-testchill.service; then exit 24; fi
fi
systemd-analyze log-level info
echo OK > /testok
exit 0