@@ -6,6 +6,7 @@ import (

 	"bufio"

 	"bytes"

 	"encoding/json"

+	"errors"

 	"fmt"

 	"io"

 	"io/ioutil"

@@ -74,6 +75,15 @@ func isTP5OrOlder() bool {

 // InitFilter returns a new Windows storage filter driver.

 func InitFilter(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (graphdriver.Driver, error) {

 	logrus.Debugf("WindowsGraphDriver InitFilter at %s", home)

+

+	fsType, err := getFileSystemType(string(home[0]))

+	if err != nil {

+		return nil, err

+	}

+	if strings.ToLower(fsType) == "refs" {

+		return nil, fmt.Errorf("%s is on an ReFS volume - ReFS volumes are not supported", home)

+	}

+

 	d := &Driver{

 		info: hcsshim.DriverInfo{

 			HomeDir: home,

@@ -85,6 +95,37 @@ func InitFilter(home string, options []string, uidMaps, gidMaps []idtools.IDMap)

 	return d, nil

 }

+// win32FromHresult is a helper function to get the win32 error code from an HRESULT

+func win32FromHresult(hr uintptr) uintptr {

+	if hr&0x1fff0000 == 0x00070000 {

+		return hr & 0xffff

+	}

+	return hr

+}

+

+// getFileSystemType obtains the type of a file system through GetVolumeInformation

+// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364993(v=vs.85).aspx

+func getFileSystemType(drive string) (fsType string, hr error) {

+	var (

+		modkernel32              = syscall.NewLazyDLL("kernel32.dll")

+		procGetVolumeInformation = modkernel32.NewProc("GetVolumeInformationW")

+		buf                      = make([]uint16, 255)

+		size                     = syscall.MAX_PATH + 1

+	)

+	if len(drive) != 1 {

+		hr = errors.New("getFileSystemType must be called with a drive letter")

+		return

+	}

+	drive += `:\`

+	n := uintptr(unsafe.Pointer(nil))

+	r0, _, _ := syscall.Syscall9(procGetVolumeInformation.Addr(), 8, uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(drive))), n, n, n, n, n, uintptr(unsafe.Pointer(&buf[0])), uintptr(size), 0)

+	if int32(r0) < 0 {

+		hr = syscall.Errno(win32FromHresult(r0))

+	}

+	fsType = syscall.UTF16ToString(buf)

+	return

+}

+

 // String returns the string representation of a driver. This should match

 // the name the graph driver has been registered with.

 func (d *Driver) String() string {