@@ -1509,12 +1509,16 @@ func (devices *DeviceSet) deactivatePool() error {

 	if err != nil {

 		return err

 	}

-	if d, err := devicemapper.GetDeps(devname); err == nil {

-		// Access to more Debug output

-		logrus.Debugf("[devmapper] devicemapper.GetDeps() %s: %#v", devname, d)

+

+	if devinfo.Exists == 0 {

+		return nil

 	}

-	if devinfo.Exists != 0 {

-		return devicemapper.RemoveDevice(devname)

+	if err := devicemapper.RemoveDevice(devname); err != nil {

+		return err

+	}

+

+	if d, err := devicemapper.GetDeps(devname); err == nil {

+		logrus.Warnf("[devmapper] device %s still has %d active dependents", devname, d.Count)

 	}

 	return nil

@@ -38,7 +38,10 @@ static void	log_with_errno_init()

 */

 import "C"

-import "unsafe"

+import (

+	"reflect"

+	"unsafe"

+)

 type (

 	CDmTask C.struct_dm_task

@@ -184,12 +187,21 @@ func dmTaskGetDepsFct(task *CDmTask) *Deps {

 	if Cdeps == nil {

 		return nil

 	}

+

+	// golang issue: https://github.com/golang/go/issues/11925

+	hdr := reflect.SliceHeader{

+		Data: uintptr(unsafe.Pointer(uintptr(unsafe.Pointer(Cdeps)) + unsafe.Sizeof(*Cdeps))),

+		Len:  int(Cdeps.count),

+		Cap:  int(Cdeps.count),

+	}

+	devices := *(*[]C.uint64_t)(unsafe.Pointer(&hdr))

+

 	deps := &Deps{

 		Count:  uint32(Cdeps.count),

 		Filler: uint32(Cdeps.filler),

 	}

-	for _, device := range Cdeps.device {

-		deps.Device = append(deps.Device, (uint64)(device))

+	for _, device := range devices {

+		deps.Device = append(deps.Device, uint64(device))

 	}

 	return deps

 }