Exemple #1
0
// Size returns the size of the rootfs for the provided id. It is a relatively
// expensive operation, it goes through all the files and adds up their size.
func (ts *TreeStore) Size(id string) (int64, error) {
	sz, err := fileutil.DirSize(ts.GetPath(id))
	if err != nil {
		return -1, errwrap.Wrap(errors.New("error calculating size"), err)
	}
	return sz, nil
}
Exemple #2
0
// Size returns the size of the rootfs for the provided id. It is a relatively
// expensive operation, it goes through all the files and adds up their size.
func (ts *TreeStore) Size(id string) (int64, error) {
	sz, err := fileutil.DirSize(ts.GetPath(id))
	if err != nil {
		return -1, fmt.Errorf("treestore: error calculating size: %v", err)
	}
	return sz, nil
}
Exemple #3
0
func TestImageSize(t *testing.T) {
	ctx := testutils.NewRktRunCtx()
	defer ctx.Cleanup()

	image := patchTestACI("rkt-size.aci", "--no-compression", "--name=size-test")
	defer os.Remove(image)

	imageHash := "sha512-" + getHashOrPanic(image)[:64]

	fi, err := os.Stat(image)
	if err != nil {
		t.Fatalf("cannot stat image %q: %v", image, err)
	}
	imageSize := fi.Size()

	fetchCmd := fmt.Sprintf("%s --insecure-options=image fetch %s", ctx.Cmd(), image)
	spawnAndWaitOrFail(t, fetchCmd, 0)

	imageListCmd := fmt.Sprintf("%s image list --no-legend --full", ctx.Cmd())

	// if we don't support overlay fs, we don't render the image on fetch
	if !common.SupportsOverlay() {
		// check that the printed size is the same as the actual image size
		expectedStr := fmt.Sprintf("(?s)%s.*%d.*", imageHash, imageSize)

		runRktAndCheckRegexOutput(t, imageListCmd, expectedStr)

		// run the image, so rkt renders it in the tree store
		runCmd := fmt.Sprintf("%s --insecure-options=image run %s", ctx.Cmd(), image)
		spawnAndWaitOrFail(t, runCmd, 0)
	}

	tmpDir := createTempDirOrPanic("rkt_image_list_test")
	defer os.RemoveAll(tmpDir)
	imageRenderCmd := fmt.Sprintf("%s image render --overwrite %s %s", ctx.Cmd(), imageHash, tmpDir)
	spawnAndWaitOrFail(t, imageRenderCmd, 0)
	/*
		recreate the tree store directory contents to get an accurate size:
		- hash file
		- image file
		- rendered file
		NOTE: if/when we add new files to the tree store directory, this test
		will fail and will need an update.
	*/
	if err := ioutil.WriteFile(filepath.Join(tmpDir, "hash"), []byte(imageHash), 0600); err != nil {
		t.Fatalf(`error writing "hash" file: %v`, err)
	}
	if err := ioutil.WriteFile(filepath.Join(tmpDir, "image"), []byte(imageHash), 0600); err != nil {
		t.Fatalf(`error writing "image" file: %v`, err)
	}
	if err := ioutil.WriteFile(filepath.Join(tmpDir, "rendered"), []byte{}, 0600); err != nil {
		t.Fatalf(`error writing "rendered" file: %v`, err)
	}
	tsSize, err := fileutil.DirSize(tmpDir)
	if err != nil {
		t.Fatalf("error calculating rendered size: %v", err)
	}

	// check the size with the rendered image
	expectedStr := fmt.Sprintf("(?s)%s.*%d.*", imageHash, imageSize+tsSize)
	runRktAndCheckRegexOutput(t, imageListCmd, expectedStr)

	// gc the pod
	gcCmd := fmt.Sprintf("%s gc --grace-period=0s", ctx.Cmd())
	spawnAndWaitOrFail(t, gcCmd, 0)

	// image gc to remove the tree store
	imageGCCmd := fmt.Sprintf("%s image gc", ctx.Cmd())
	spawnAndWaitOrFail(t, imageGCCmd, 0)

	// check that the size goes back to the original (only the image size)
	expectedStr = fmt.Sprintf("(?s)%s.*%d.*", imageHash, imageSize)
	runRktAndCheckRegexOutput(t, imageListCmd, expectedStr)
}