func ValidateVirtualMachineClone(d *schema.ResourceDiff, c *govmomi.Client) error {
	tUUID := d.Get("clone.0.template_uuid").(string)
	log.Printf("[DEBUG] ValidateVirtualMachineClone: Validating fitness of source VM/template %s", tUUID)
	vm, err := virtualmachine.FromUUID(c, tUUID)
	if err != nil {
		return fmt.Errorf("cannot locate virtual machine or template with UUID %q: %s", tUUID, err)
	}
	vprops, err := virtualmachine.Properties(vm)
	if err != nil {
		return fmt.Errorf("error fetching virtual machine or template properties: %s", err)
	}
	// The virtual machine needs to be powered off to be suitable for cloning.
	if vprops.Runtime.PowerState != types.VirtualMachinePowerStatePoweredOff {
		return fmt.Errorf("virtual machine %s must be powered off to be used as a source for cloning", tUUID)
	}
	// Check to see if our guest IDs match.
	eGuestID := vprops.Config.GuestId
	aGuestID := d.Get("guest_id").(string)
	if eGuestID != aGuestID {
		return fmt.Errorf("invalid guest ID %q for clone. Please set it to %q", aGuestID, eGuestID)
	}
	// If linked clone is enabled, check to see if we have a snapshot. There need
	// to be a single snapshot on the template for it to be eligible.
	linked := d.Get("clone.0.linked_clone").(bool)
	if linked {
		log.Printf("[DEBUG] ValidateVirtualMachineClone: Checking snapshots on %s for linked clone eligibility", tUUID)
		if err := validateCloneSnapshots(vprops); err != nil {
			return err
		}
	}
	// Check to make sure the disks for this VM/template line up with the disks
	// in the configuration. This is in the virtual device package, so pass off
	// to that now.
	l := object.VirtualDeviceList(vprops.Config.Hardware.Device)
	if err := virtualdevice.DiskCloneValidateOperation(d, c, l, linked); err != nil {
		return err
	}

	// If a customization spec was defined, we need to check some items in it as well.
	if len(d.Get("clone.0.customize").([]interface{})) > 0 {
		if poolID, ok := d.GetOk("resource_pool_id"); ok {
			pool, err := resourcepool.FromID(c, poolID.(string))
			if err != nil {
				return fmt.Errorf("could not find resource pool ID %q: %s", poolID, err)
			}
			family, err := resourcepool.OSFamily(c, pool, d.Get("guest_id").(string))
			if err != nil {
				return fmt.Errorf("cannot find OS family for guest ID %q: %s", d.Get("guest_id").(string), err)
			}
			if err := ValidateCustomizationSpec(d, family); err != nil {
				return err
			}
		} else {
			log.Printf("[DEBUG] ValidateVirtualMachineClone: resource_pool_id is not available. Skipping OS family check.")
		}
	}
	vconfig := vprops.Config.VAppConfig
	if vconfig != nil {
		// We need to set the vApp transport types here so that it is available
		// later in CustomizeDiff where transport requirements are validated in
		// ValidateVAppTransport
		d.SetNew("vapp_transport", vconfig.GetVmConfigInfo().OvfEnvironmentTransport)
	}

	log.Printf("[DEBUG] ValidateVirtualMachineClone: Source VM/template %s is a suitable source for cloning", tUUID)
	return nil
}
func ValidateVirtualMachineClone(d *schema.ResourceDiff, c *govmomi.Client) error {
	tUUID := d.Get("clone.0.template_uuid").(string)
	log.Printf("[DEBUG] ValidateVirtualMachineClone: Validating fitness of source VM/template %s", tUUID)
	vm, err := virtualmachine.FromUUID(c, tUUID)
	if err != nil {
		return fmt.Errorf("cannot locate virtual machine or template with UUID %q: %s", tUUID, err)
	}
	vprops, err := virtualmachine.Properties(vm)
	if err != nil {
		return fmt.Errorf("error fetching virtual machine or template properties: %s", err)
	}
	// The virtual machine needs to be powered off to be suitable for cloning.
	if vprops.Runtime.PowerState != types.VirtualMachinePowerStatePoweredOff {
		return fmt.Errorf("virtual machine %s must be powered off to be used as a source for cloning", tUUID)
	}
	// Check to see if our guest IDs match.
	eGuestID := vprops.Config.GuestId
	aGuestID := d.Get("guest_id").(string)
	if eGuestID != aGuestID {
		return fmt.Errorf("invalid guest ID %q for clone. Please set it to %q", aGuestID, eGuestID)
	}
	// If linked clone is enabled, check to see if we have a snapshot. There need
	// to be a single snapshot on the template for it to be eligible.
	linked := d.Get("clone.0.linked_clone").(bool)
	if linked {
		log.Printf("[DEBUG] ValidateVirtualMachineClone: Checking snapshots on %s for linked clone eligibility", tUUID)
		if err := validateCloneSnapshots(vprops); err != nil {
			return err
		}
	}
	// Check to make sure the disks for this VM/template line up with the disks
	// in the configuration. This is in the virtual device package, so pass off
	// to that now.
	l := object.VirtualDeviceList(vprops.Config.Hardware.Device)
	if err := virtualdevice.DiskCloneValidateOperation(d, c, l, linked); err != nil {
		return err
	}

	// If a customization spec was defined, we need to check some items in it as well.
	if len(d.Get("clone.0.customize").([]interface{})) > 0 {
		if poolID, ok := d.GetOk("resource_pool_id"); ok {
			pool, err := resourcepool.FromID(c, poolID.(string))
			if err != nil {
				return fmt.Errorf("could not find resource pool ID %q: %s", poolID, err)
			}
			family, err := resourcepool.OSFamily(c, pool, d.Get("guest_id").(string))
			if err != nil {
				return fmt.Errorf("cannot find OS family for guest ID %q: %s", d.Get("guest_id").(string), err)
			}
			if err := ValidateCustomizationSpec(d, family); err != nil {
				return err
			}
		} else {
			log.Printf("[DEBUG] ValidateVirtualMachineClone: resource_pool_id is not available. Skipping OS family check.")
		}
	}
	vconfig := vprops.Config.VAppConfig
	if vconfig != nil {
		// We need to set the vApp transport types here so that it is available
		// later in CustomizeDiff where transport requirements are validated in
		// ValidateVAppTransport
		d.SetNew("vapp_transport", vconfig.GetVmConfigInfo().OvfEnvironmentTransport)
	}

	log.Printf("[DEBUG] ValidateVirtualMachineClone: Source VM/template %s is a suitable source for cloning", tUUID)
	return nil
}
// ValidateVirtualMachineClone does pre-creation validation of a virtual
// machine's configuration to make sure it's suitable for use in cloning.
// This includes, but is not limited to checking to make sure that the disks in
// the new VM configuration line up with the configuration in the existing
// template, and checking to make sure that the VM has a single snapshot we can
// use in the even that linked clones are enabled.