"attachmentMetadata": "attachmentMetadata is populated with any information returned by the attach operation, upon successful attach, that must be passed into subsequent WaitForAttach or Mount calls. This field must only be set by the entity completing the attach operation, i.e. the external-attacher.",

  optional bool attached = 1;

  // attachmentMetadata is populated with any
  // information returned by the attach operation, upon successful attach, that must be passed
  // into subsequent WaitForAttach or Mount calls.
  // This field must only be set by the entity completing the attach
  // operation, i.e. the external-attacher.
  // +optional
  map<string, string> attachmentMetadata = 2;

	// attachmentMetadata is populated with any
	// information returned by the attach operation, upon successful attach, that must be passed
	// into subsequent WaitForAttach or Mount calls.
	// This field must only be set by the entity completing the attach
	// operation, i.e. the external-attacher.
	// +optional

	// operation, i.e. the external-attacher.
	Attached bool

	// Upon successful attach, this field is populated with any
	// information returned by the attach operation that must be passed
	// into subsequent WaitForAttach or Mount calls.
	// This field must only be set by the entity completing the attach
	// operation, i.e. the external-attacher.
	// +optional
	AttachmentMetadata map[string]string

	// attachmentMetadata is populated with any
	// information returned by the attach operation, upon successful attach, that must be passed
	// into subsequent WaitForAttach or Mount calls.
	// This field must only be set by the entity completing the attach
	// operation, i.e. the external-attacher.
	// +optional

		notMnt, err := b.mounter.IsLikelyNotMountPoint(globalPDPath)
		if err != nil {
			return err
		}
		if !notMnt {
			// The volume is already mounted, therefore the previous WaitForAttach must have
			// persisted the volume metadata. In addition, the metadata is actually *inside*
			// globalPDPath and we can't write it here, because it was shadowed by the volume
			// mount.

		// Assert
		// 4. When the volume is mounted again, expect that UnmountDevice operation did not clear devicePath
		if devicePath == "" {
			klog.ErrorS(nil, "Expected WaitForAttach called with devicePath from Node.Status")
			close(finished)
			return "", fmt.Errorf("Expected devicePath from Node.Status")
		}
		close(finished)
		return devicePath, nil
	}
	fakePlugin.Unlock()

	}
	return "/dev/vdb-test", nil
}

func (fv *FakeVolume) GetAttachCallCount() int {
	fv.RLock()
	defer fv.RUnlock()
	return fv.AttachCallCount
}

func (fv *FakeVolume) WaitForAttach(spec *volume.Spec, devicePath string, pod *v1.Pod, spectimeout time.Duration) (string, error) {
	fv.Lock()
	defer fv.Unlock()
	fv.WaitForAttachCallCount++
	if fv.WaitForAttachHook != nil {

	return nil
}

// WaitForDetach is part of the volume.Detacher interface.
func (d *detacherDefaults) WaitForDetach(devicePath string, timeout time.Duration) error {
	klog.Warning(logPrefix(d.plugin.flexVolumePlugin), "using default WaitForDetach for device ", devicePath)
	return nil
}

// UnmountDevice is part of the volume.Detacher interface.

* Fix an issue in inter-pod affinity predicate that cause affinity to self being processed correctly ([#62591](https://github.com/kubernetes/kubernetes/pull/62591), [@bsalamat](https://github.com/bsalamat))
* fix WaitForAttach failure issue for azure disk ([#62612](https://github.com/kubernetes/kubernetes/pull/62612), [@andyzhangx](https://github.com/andyzhangx))