Function TestContainerStartOnDaemonRestart

integration/container/daemon_linux_test.go:35–73

This is a regression test for #36145 It ensures that a container can be started when the daemon was improperly shutdown when the daemon is brought back up. The regression is due to improper error handling preventing a container from being restored and as such have the resources cleaned up. To test

(t *testing.T)

// the container process, then start dockerd back up and attempt to start the
// container again.
func TestContainerStartOnDaemonRestart(t *testing.T) {
	skip.If(t, testEnv.IsRemoteDaemon, "cannot start daemon on remote test run")
	skip.If(t, testEnv.DaemonInfo.OSType == "windows")
	skip.If(t, testEnv.IsRootless)
	t.Parallel()

	ctx := testutil.StartSpan(baseContext, t)

	d := daemon.New(t)
	d.StartWithBusybox(ctx, t, "--iptables=false", "--ip6tables=false")
	defer d.Stop(t)

	c := d.NewClientT(t)

	cID := container.Create(ctx, t, c)
	defer c.ContainerRemove(ctx, cID, client.ContainerRemoveOptions{Force: true})

	_, err := c.ContainerStart(ctx, cID, client.ContainerStartOptions{})
	assert.Check(t, err, "error starting test container")

	inspect, err := c.ContainerInspect(ctx, cID, client.ContainerInspectOptions{})
	assert.Check(t, err, "error getting inspect data")

	ppid := getContainerdShimPid(t, inspect.Container)

	err = d.Kill()
	assert.Check(t, err, "failed to kill test daemon")

	err = unix.Kill(inspect.Container.State.Pid, unix.SIGKILL)
	assert.Check(t, err, "failed to kill container process")

	err = unix.Kill(ppid, unix.SIGKILL)
	assert.Check(t, err, "failed to kill containerd-shim")

	d.Start(t, "--iptables=false", "--ip6tables=false")

	_, err = c.ContainerStart(ctx, cID, client.ContainerStartOptions{})
	assert.Check(t, err, "failed to start test container")
}

func getContainerdShimPid(t *testing.T, c containertypes.InspectResponse) int {
	statB, err := os.ReadFile(fmt.Sprintf("/proc/%d/stat", c.State.Pid))