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|
#!/usr/bin/env bash
set -ex
set -o pipefail
systemd-analyze log-level debug
systemd-analyze log-target console
unit=testsuite-38-sleep.service
start_test_service() {
systemctl daemon-reload
systemctl start "${unit}"
}
dbus_freeze() {
local suffix=
suffix="${1##*.}"
local name="$(echo ${1%.$suffix} | sed s/-/_2d/g)"
local object_path="/org/freedesktop/systemd1/unit/${name}_2e${suffix}"
busctl call \
org.freedesktop.systemd1 \
"${object_path}" \
org.freedesktop.systemd1.Unit \
Freeze
}
dbus_thaw() {
local suffix=
suffix="${1##*.}"
local name="$(echo ${1%.$suffix} | sed s/-/_2d/g)"
local object_path="/org/freedesktop/systemd1/unit/${name}_2e${suffix}"
busctl call \
org.freedesktop.systemd1 \
"${object_path}" \
org.freedesktop.systemd1.Unit \
Thaw
}
dbus_freeze_unit() {
busctl call \
org.freedesktop.systemd1 \
/org/freedesktop/systemd1 \
org.freedesktop.systemd1.Manager \
FreezeUnit \
s \
"$1"
}
dbus_thaw_unit() {
busctl call \
org.freedesktop.systemd1 \
/org/freedesktop/systemd1 \
org.freedesktop.systemd1.Manager \
ThawUnit \
s \
"$1"
}
dbus_can_freeze() {
local suffix=
suffix="${1##*.}"
local name="$(echo ${1%.$suffix} | sed s/-/_2d/g)"
local object_path="/org/freedesktop/systemd1/unit/${name}_2e${suffix}"
busctl get-property \
org.freedesktop.systemd1 \
"${object_path}" \
org.freedesktop.systemd1.Unit \
CanFreeze
}
check_freezer_state() {
local suffix=
suffix="${1##*.}"
local name="$(echo ${1%.$suffix} | sed s/-/_2d/g)"
local object_path="/org/freedesktop/systemd1/unit/${name}_2e${suffix}"
state=$(busctl get-property \
org.freedesktop.systemd1 \
"${object_path}" \
org.freedesktop.systemd1.Unit \
FreezerState | cut -d " " -f2 | tr -d '"')
[ "$state" = "$2" ] || {
echo "error: unexpected freezer state, expected: $2, actual: $state" >&2
exit 1
}
}
check_cgroup_state() {
grep -q "frozen $2" /sys/fs/cgroup/system.slice/"$1"/cgroup.events
}
test_dbus_api() {
echo "Test that DBus API works:"
echo -n " - Freeze(): "
dbus_freeze "${unit}"
check_freezer_state "${unit}" "frozen"
check_cgroup_state "$unit" 1
echo "[ OK ]"
echo -n " - Thaw(): "
dbus_thaw "${unit}"
check_freezer_state "${unit}" "running"
check_cgroup_state "$unit" 0
echo "[ OK ]"
echo -n " - FreezeUnit(): "
dbus_freeze_unit "${unit}"
check_freezer_state "${unit}" "frozen"
check_cgroup_state "$unit" 1
echo "[ OK ]"
echo -n " - ThawUnit(): "
dbus_thaw_unit "${unit}"
check_freezer_state "${unit}" "running"
check_cgroup_state "$unit" 0
echo "[ OK ]"
echo -n " - CanFreeze(): "
output=$(dbus_can_freeze "${unit}")
[ "$output" = "b true" ]
echo "[ OK ]"
echo
}
test_jobs() {
local pid_before=
local pid_after=
echo "Test that it is possible to apply jobs on frozen units:"
systemctl start "${unit}"
dbus_freeze "${unit}"
check_freezer_state "${unit}" "frozen"
echo -n " - restart: "
pid_before=$(systemctl show -p MainPID "${unit}" --value)
systemctl restart "${unit}"
pid_after=$(systemctl show -p MainPID "${unit}" --value)
[ "$pid_before" != "$pid_after" ] && echo "[ OK ]"
dbus_freeze "${unit}"
check_freezer_state "${unit}" "frozen"
echo -n " - stop: "
timeout 5s systemctl stop "${unit}"
echo "[ OK ]"
echo
}
test_systemctl() {
echo "Test that systemctl freeze/thaw verbs:"
systemctl start "$unit"
echo -n " - freeze: "
systemctl freeze "$unit"
check_freezer_state "${unit}" "frozen"
check_cgroup_state "$unit" 1
# Freezing already frozen unit should be NOP and return quickly
timeout 3s systemctl freeze "$unit"
echo "[ OK ]"
echo -n " - thaw: "
systemctl thaw "$unit"
check_freezer_state "${unit}" "running"
check_cgroup_state "$unit" 0
# Likewise thawing already running unit shouldn't block
timeout 3s systemctl thaw "$unit"
echo "[ OK ]"
systemctl stop "$unit"
echo
}
test_systemctl_show() {
echo "Test systemctl show integration:"
systemctl start "$unit"
echo -n " - FreezerState property: "
state=$(systemctl show -p FreezerState --value "$unit")
[ "$state" = "running" ]
systemctl freeze "$unit"
state=$(systemctl show -p FreezerState --value "$unit")
[ "$state" = "frozen" ]
systemctl thaw "$unit"
echo "[ OK ]"
echo -n " - CanFreeze property: "
state=$(systemctl show -p CanFreeze --value "$unit")
[ "$state" = "yes" ]
echo "[ OK ]"
systemctl stop "$unit"
echo
}
test_recursive() {
local slice="bar.slice"
local unit="baz.service"
systemd-run --unit "$unit" --slice "$slice" sleep 3600 >/dev/null 2>&1
echo "Test recursive freezing:"
echo -n " - freeze: "
systemctl freeze "$slice"
check_freezer_state "${slice}" "frozen"
check_freezer_state "${unit}" "frozen"
grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/cgroup.events
grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
echo "[ OK ]"
echo -n " - thaw: "
systemctl thaw "$slice"
check_freezer_state "${unit}" "running"
check_freezer_state "${slice}" "running"
grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/cgroup.events
grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
echo "[ OK ]"
systemctl stop "$unit"
systemctl stop "$slice"
echo
}
test_preserve_state() {
local slice="bar.slice"
local unit="baz.service"
systemd-run --unit "$unit" --slice "$slice" sleep 3600 >/dev/null 2>&1
echo "Test that freezer state is preserved when recursive freezing is initiated from outside (e.g. by manager up the tree):"
echo -n " - freeze from outside: "
echo 1 > /sys/fs/cgroup/"${slice}"/cgroup.freeze
# Give kernel some time to freeze the slice
sleep 1
# Our state should not be affected
check_freezer_state "${slice}" "running"
check_freezer_state "${unit}" "running"
# However actual kernel state should be frozen
grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/cgroup.events
grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
echo "[ OK ]"
echo -n " - thaw from outside: "
echo 0 > /sys/fs/cgroup/"${slice}"/cgroup.freeze
sleep 1
check_freezer_state "${unit}" "running"
check_freezer_state "${slice}" "running"
grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/cgroup.events
grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
echo "[ OK ]"
echo -n " - thaw from outside while inner service is frozen: "
systemctl freeze "$unit"
check_freezer_state "${unit}" "frozen"
echo 1 > /sys/fs/cgroup/"${slice}"/cgroup.freeze
echo 0 > /sys/fs/cgroup/"${slice}"/cgroup.freeze
check_freezer_state "${slice}" "running"
check_freezer_state "${unit}" "frozen"
echo "[ OK ]"
systemctl stop "$unit"
systemctl stop "$slice"
echo
}
test -e /sys/fs/cgroup/system.slice/cgroup.freeze && {
start_test_service
test_dbus_api
test_systemctl
test_systemctl_show
test_jobs
test_recursive
test_preserve_state
}
echo OK > /testok
exit 0
|
