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95 lines
2.4 KiB
Bash
Executable File
95 lines
2.4 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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systemd-analyze log-level debug
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systemd-analyze log-target journal
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NUM_DIRS=20
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# make sure we can handle mounts at very long paths such that mount unit name must be hashed to fall within our unit name limit
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LONGPATH="$(printf "/$(printf "x%0.s" {1..255})%0.s" {1..7})"
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LONGMNT="$(systemd-escape --suffix=mount --path "$LONGPATH")"
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TS="$(date '+%H:%M:%S')"
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mkdir -p "$LONGPATH"
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mount -t tmpfs tmpfs "$LONGPATH"
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systemctl daemon-reload
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# check that unit is active(mounted)
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systemctl --no-pager show -p SubState --value "$LONGPATH" | grep -q mounted
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# check that relevant part of journal doesn't contain any errors related to unit
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[ "$(journalctl -b --since="$TS" --priority=err | grep -c "$LONGMNT")" = "0" ]
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# check that we can successfully stop the mount unit
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systemctl stop "$LONGPATH"
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rm -rf "$LONGPATH"
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# mount/unmount enough times to trigger the /proc/self/mountinfo parsing rate limiting
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for ((i = 0; i < NUM_DIRS; i++)); do
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mkdir "/tmp/meow${i}"
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done
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for ((i = 0; i < NUM_DIRS; i++)); do
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mount -t tmpfs tmpfs "/tmp/meow${i}"
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done
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systemctl daemon-reload
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systemctl list-units -t mount tmp-meow* | grep -q tmp-meow
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for ((i = 0; i < NUM_DIRS; i++)); do
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umount "/tmp/meow${i}"
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done
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# figure out if we have entered the rate limit state
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entered_rl=0
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exited_rl=0
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timeout="$(date -ud "2 minutes" +%s)"
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while [[ $(date -u +%s) -le ${timeout} ]]; do
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if journalctl -u init.scope | grep -q "(mount-monitor-dispatch) entered rate limit"; then
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entered_rl=1
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break
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fi
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sleep 5
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done
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# if the infra is slow we might not enter the rate limit state; in that case skip the exit check
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if [ "${entered_rl}" = "1" ]; then
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exited_rl=0
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timeout="$(date -ud "2 minutes" +%s)"
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while [[ $(date -u +%s) -le ${timeout} ]]; do
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if journalctl -u init.scope | grep -q "(mount-monitor-dispatch) left rate limit"; then
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exited_rl=1
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break
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fi
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sleep 5
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done
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if [ "${exited_rl}" = "0" ]; then
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exit 24
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fi
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fi
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# give some time for units to settle so we don't race between exiting the rate limit state and cleaning up the units
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sleep 60
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systemctl daemon-reload
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sleep 60
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# verify that the mount units are always cleaned up at the end
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if systemctl list-units -t mount tmp-meow* | grep -q tmp-meow; then
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exit 42
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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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