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https://github.com/systemd/systemd-stable.git
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118 lines
3.5 KiB
Bash
Executable File
118 lines
3.5 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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test_issue_20329() {
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local tmpdir unit
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tmpdir="$(mktemp -d)"
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unit=$(systemd-escape --suffix mount --path "$tmpdir")
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# Set up test mount unit
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cat > /run/systemd/system/"$unit" <<EOF
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[Mount]
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What=tmpfs
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Where=$tmpdir
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Type=tmpfs
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Options=defaults,nofail
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EOF
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# Start the unit
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systemctl daemon-reload
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systemctl start "$unit"
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[[ "$(systemctl show --property SubState --value "$unit")" = "mounted" ]] || {
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echo >&2 "Test mount \"$unit\" unit isn't mounted"
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return 1
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}
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mountpoint -q "$tmpdir"
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trap 'systemctl stop $unit' RETURN
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# Trigger the mount ratelimiting
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cd "$(mktemp -d)"
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mkdir foo
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for ((i = 0; i < 50; i++)); do
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mount --bind foo foo
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umount foo
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done
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# Unmount the test mount and start it immediately again via systemd
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umount "$tmpdir"
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systemctl start "$unit"
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# Make sure it is seen as mounted by systemd and it actually is mounted
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[[ "$(systemctl show --property SubState --value "$unit")" = "mounted" ]] || {
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echo >&2 "Test mount \"$unit\" unit isn't in \"mounted\" state"
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return 1
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}
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mountpoint -q "$tmpdir" || {
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echo >&2 "Test mount \"$unit\" is in \"mounted\" state, actually is not mounted"
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return 1
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}
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}
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: >/failed
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systemd-analyze log-level debug
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systemd-analyze log-target journal
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NUM_DIRS=20
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# make sure we can handle mounts at very long paths such that mount unit name must be hashed to fall within our unit name limit
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LONGPATH="$(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${i}"
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done
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TS="$(date '+%H:%M:%S')"
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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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# 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 timeout 2m bash -c "while ! journalctl -u init.scope --since=$TS | grep -q '(mount-monitor-dispatch) entered rate limit'; do sleep 1; done"; then
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timeout 2m bash -c "while ! journalctl -u init.scope --since=$TS | grep -q '(mount-monitor-dispatch) left rate limit'; do sleep 1; done"
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fi
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# Verify that the mount units are always cleaned up at the end.
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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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timeout 2m bash -c 'while systemctl list-units -t mount tmp-meow* | grep -q tmp-meow; do systemctl daemon-reload; sleep 10; done'
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# test that handling of mount start jobs is delayed when /proc/self/mouninfo monitor is rate limited
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test_issue_20329
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systemd-analyze log-level info
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touch /testok
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rm /failed
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