func TestUpdate(t *testing.T) {
	th.SetupHTTP()
	defer th.TeardownHTTP()

	MockUpdateResponse(t)

	options := volumes.UpdateOpts{Name: "vol-002"}
	v, err := volumes.Update(client.ServiceClient(), "d32019d3-bc6e-4319-9c1d-6722fc136a22", options).Extract()
	th.AssertNoErr(t, err)
	th.CheckEquals(t, "vol-002", v.Name)
}
func resourceBlockStorageVolumeV1Update(d *schema.ResourceData, meta interface{}) error {
	config := meta.(*Config)
	blockStorageClient, err := config.blockStorageV1Client(GetRegion(d))
	if err != nil {
		return fmt.Errorf("Error creating OpenStack block storage client: %s", err)
	}

	updateOpts := volumes.UpdateOpts{
		Name:        d.Get("name").(string),
		Description: d.Get("description").(string),
	}

	if d.HasChange("metadata") {
		updateOpts.Metadata = resourceVolumeMetadataV1(d)
	}

	_, err = volumes.Update(blockStorageClient, d.Id(), updateOpts).Extract()
	if err != nil {
		return fmt.Errorf("Error updating OpenStack volume: %s", err)
	}

	return resourceBlockStorageVolumeV1Read(d, meta)
}