@@ -3,6 +3,7 @@ package devmapper

 import (

 	"fmt"

 	"github.com/dotcloud/docker/graphdriver"

+	"io/ioutil"

 	"os"

 	"path"

 )

@@ -57,7 +58,26 @@ func (d *Driver) Cleanup() error {

 }

 func (d *Driver) Create(id string, parent string) error {

-	return d.DeviceSet.AddDevice(id, parent)

+	if err := d.DeviceSet.AddDevice(id, parent); err != nil {

+		return err

+	}

+

+	mp := path.Join(d.home, "mnt", id)

+	if err := d.mount(id, mp); err != nil {

+		return err

+	}

+

+	if err := os.MkdirAll(path.Join(mp, "rootfs"), 0755); err != nil && !os.IsExist(err) {

+		return err

+	}

+

+	// Create an "id" file with the container/image id in it to help reconscruct this in case

+	// of later problems

+	if err := ioutil.WriteFile(path.Join(mp, "id"), []byte(id), 0600); err != nil {

+		return err

+	}

+

+	return nil

 }

 func (d *Driver) Remove(id string) error {

@@ -73,7 +93,7 @@ func (d *Driver) Get(id string) (string, error) {

 	if err := d.mount(id, mp); err != nil {

 		return "", err

 	}

-	return mp, nil

+	return path.Join(mp, "rootfs"), nil

 }

 func (d *Driver) mount(id, mountPoint string) error {