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#!/usr/bin/env bash
set -eux
set -o pipefail
systemd-analyze log-level debug
systemd-analyze log-target journal
NUM_DIRS=20
# mount/unmount enough times to trigger the /proc/self/mountinfo parsing rate limiting
for ((i = 0; i < NUM_DIRS; i++)); do
mkdir "/tmp/meow${i}"
done
for ((i = 0; i < NUM_DIRS; i++)); do
mount -t tmpfs tmpfs "/tmp/meow${i}"
done
systemctl daemon-reload
systemctl list-units -t mount tmp-meow* | grep -q tmp-meow
for ((i = 0; i < NUM_DIRS; i++)); do
umount "/tmp/meow${i}"
done
# figure out if we have entered the rate limit state
exited_rl=0
timeout="$(date -ud "2 minutes" +%s)"
while [[ $(date -u +%s) -le ${timeout} ]]; do
if journalctl -u init.scope | grep -q "(mount-monitor-dispatch) entered rate limit"; then
entered_rl=1
break
fi
sleep 5
done
# if the infra is slow we might not enter the rate limit state; in that case skip the exit check
if [ "${entered_rl}" = "1" ]; then
exited_rl=0
timeout="$(date -ud "2 minutes" +%s)"
while [[ $(date -u +%s) -le ${timeout} ]]; do
if journalctl -u init.scope | grep -q "(mount-monitor-dispatch) left rate limit"; then
exited_rl=1
break
fi
sleep 5
done
if [ "${exited_rl}" = "0" ]; then
exit 24
fi
fi
# give some time for units to settle so we don't race between exiting the rate limit state and cleaning up the units
sleep 60
systemctl daemon-reload
sleep 60
# verify that the mount units are always cleaned up at the end
if systemctl list-units -t mount tmp-meow* | grep -q tmp-meow; then
exit 42
fi
systemd-analyze log-level info
echo OK >/testok
exit 0
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