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![Daan De Meyer](/assets/img/avatar_default.png)
Having these named differently than the test itself mostly creates unecessary confusion and makes writing logic against the tests harder so let's rename the testsuite-xx units and scripts to just use the test name itself.
191 lines
6.7 KiB
Bash
Executable file
191 lines
6.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eux
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set -o pipefail
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# shellcheck source=test/units/util.sh
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. "$(dirname "$0")"/util.sh
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. /etc/os-release
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# OpenSUSE does not have the stress tool packaged. It does have stress-ng but the stress-ng does not support
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# --vm-stride which this test uses.
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if [[ "$ID" =~ "opensuse" ]]; then
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echo "Skipping due to missing stress package in OpenSUSE" >>/skipped
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exit 77
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fi
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systemd-analyze log-level debug
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# Ensure that the init.scope.d drop-in is applied on boot
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test "$(cat /sys/fs/cgroup/init.scope/memory.high)" != "max"
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# Loose checks to ensure the environment has the necessary features for systemd-oomd
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[[ -e /proc/pressure ]] || echo "no PSI" >>/skipped
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[[ "$(get_cgroup_hierarchy)" == "unified" ]] || echo "no cgroupsv2" >>/skipped
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[[ -x /usr/lib/systemd/systemd-oomd ]] || echo "no oomd" >>/skipped
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if [[ -s /skipped ]]; then
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exit 77
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fi
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rm -rf /run/systemd/system/TEST-55-OOMD-testbloat.service.d
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# Activate swap file if we are in a VM
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if systemd-detect-virt --vm --quiet; then
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swapoff --all
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if [[ "$(findmnt -n -o FSTYPE /)" == btrfs ]]; then
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btrfs filesystem mkswapfile -s 64M /swapfile
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else
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dd if=/dev/zero of=/swapfile bs=1M count=64
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chmod 0600 /swapfile
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mkswap /swapfile
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fi
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swapon /swapfile
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swapon --show
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fi
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# Configure oomd explicitly to avoid conflicts with distro dropins
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mkdir -p /run/systemd/oomd.conf.d/
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cat >/run/systemd/oomd.conf.d/99-oomd-test.conf <<EOF
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[OOM]
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DefaultMemoryPressureDurationSec=2s
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EOF
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mkdir -p /run/systemd/system/-.slice.d/
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cat >/run/systemd/system/-.slice.d/99-oomd-test.conf <<EOF
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[Slice]
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ManagedOOMSwap=auto
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EOF
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mkdir -p /run/systemd/system/user@.service.d/
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cat >/run/systemd/system/user@.service.d/99-oomd-test.conf <<EOF
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[Service]
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ManagedOOMMemoryPressure=auto
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ManagedOOMMemoryPressureLimit=0%
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EOF
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mkdir -p /run/systemd/system/systemd-oomd.service.d/
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cat >/run/systemd/system/systemd-oomd.service.d/debug.conf <<EOF
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[Service]
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Environment=SYSTEMD_LOG_LEVEL=debug
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EOF
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systemctl daemon-reload
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# enable the service to ensure dbus-org.freedesktop.oom1.service exists
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# and D-Bus activation works
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systemctl enable systemd-oomd.service
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# if oomd is already running for some reasons, then restart it to make sure the above settings to be applied
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if systemctl is-active systemd-oomd.service; then
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systemctl restart systemd-oomd.service
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fi
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if [[ -v ASAN_OPTIONS || -v UBSAN_OPTIONS ]]; then
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# If we're running with sanitizers, sd-executor might pull in quite a significant chunk of shared
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# libraries, which in turn causes a lot of pressure that can put us in the front when sd-oomd decides to
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# go on a killing spree. This fact is exacerbated further on Arch Linux which ships unstripped gcc-libs,
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# so sd-executor pulls in over 30M of libs on startup. Let's make the MemoryHigh= limit a bit more
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# generous when running with sanitizers to make the test happy.
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systemctl edit --runtime --stdin --drop-in=99-MemoryHigh.conf TEST-55-OOMD-testchill.service <<EOF
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[Service]
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MemoryHigh=60M
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EOF
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# Do the same for the user instance as well
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mkdir -p /run/systemd/user/
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cp -rfv /run/systemd/system/TEST-55-OOMD-testchill.service.d/ /run/systemd/user/
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else
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# Ensure that we can start services even with a very low hard memory cap without oom-kills, but skip
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# under sanitizers as they balloon memory usage.
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systemd-run -t -p MemoryMax=10M -p MemorySwapMax=0 -p MemoryZSwapMax=0 /bin/true
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fi
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systemctl start TEST-55-OOMD-testchill.service
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systemctl start TEST-55-OOMD-testbloat.service
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# Verify systemd-oomd is monitoring the expected units
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timeout 1m bash -xec 'until oomctl | grep "/TEST-55-OOMD-workload.slice"; do sleep 1; done'
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oomctl | grep "/TEST-55-OOMD-workload.slice"
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oomctl | grep "20.00%"
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oomctl | grep "Default Memory Pressure Duration: 2s"
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systemctl status TEST-55-OOMD-testchill.service
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# systemd-oomd watches for elevated pressure for 2 seconds before acting.
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# It can take time to build up pressure so either wait 2 minutes or for the service to fail.
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for _ in {0..59}; do
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if ! systemctl status TEST-55-OOMD-testbloat.service; then
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break
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fi
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oomctl
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sleep 2
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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 TEST-55-OOMD-testbloat.service; then exit 42; fi
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if ! systemctl status TEST-55-OOMD-testchill.service; then exit 24; fi
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# Make sure we also work correctly on user units.
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loginctl enable-linger testuser
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systemctl start --machine "testuser@.host" --user TEST-55-OOMD-testchill.service
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systemctl start --machine "testuser@.host" --user TEST-55-OOMD-testbloat.service
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# Verify systemd-oomd is monitoring the expected units
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# Try to avoid racing the oomctl output check by checking in a loop with a timeout
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timeout 1m bash -xec 'until oomctl | grep "/TEST-55-OOMD-workload.slice"; do sleep 1; done'
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oomctl | grep -E "/user.slice.*/TEST-55-OOMD-workload.slice"
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oomctl | grep "20.00%"
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oomctl | grep "Default Memory Pressure Duration: 2s"
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systemctl --machine "testuser@.host" --user status TEST-55-OOMD-testchill.service
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# systemd-oomd watches for elevated pressure for 2 seconds before acting.
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# It can take time to build up pressure so either wait 2 minutes or for the service to fail.
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for _ in {0..59}; do
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if ! systemctl --machine "testuser@.host" --user status TEST-55-OOMD-testbloat.service; then
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break
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fi
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oomctl
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sleep 2
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done
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# testbloat should be killed and testchill should be fine
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if systemctl --machine "testuser@.host" --user status TEST-55-OOMD-testbloat.service; then exit 42; fi
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if ! systemctl --machine "testuser@.host" --user status TEST-55-OOMD-testchill.service; then exit 24; fi
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loginctl disable-linger testuser
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# only run this portion of the test if we can set xattrs
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if cgroupfs_supports_user_xattrs; then
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sleep 120 # wait for systemd-oomd kill cool down and elevated memory pressure to come down
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mkdir -p /run/systemd/system/TEST-55-OOMD-testbloat.service.d/
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cat >/run/systemd/system/TEST-55-OOMD-testbloat.service.d/override.conf <<EOF
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[Service]
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ManagedOOMPreference=avoid
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EOF
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systemctl daemon-reload
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systemctl start TEST-55-OOMD-testchill.service
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systemctl start TEST-55-OOMD-testmunch.service
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systemctl start TEST-55-OOMD-testbloat.service
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for _ in {0..59}; do
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if ! systemctl status TEST-55-OOMD-testmunch.service; then
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break
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fi
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oomctl
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sleep 2
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done
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# testmunch should be killed since testbloat had the avoid xattr on it
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if ! systemctl status TEST-55-OOMD-testbloat.service; then exit 25; fi
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if systemctl status TEST-55-OOMD-testmunch.service; then exit 43; fi
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if ! systemctl status TEST-55-OOMD-testchill.service; then exit 24; fi
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fi
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systemd-analyze log-level info
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touch /testok
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