Add the ability to create a SCSI Device as the main HD controller for

virtualbox.

builder/virtualbox/common/driver.go

@@ -18,6 +18,9 @@ import (
 type Driver interface {
 	// Create a SATA controller.
 	CreateSATAController(vm string, controller string) error
+  
+  // Create a SCSI controller.
+  CreateSCSIController(vm string, controller string) error
 
 	// Delete a VM by name
 	Delete(string) error

builder/virtualbox/common/driver_4_2.go

@@ -36,6 +36,18 @@ func (d *VBox42Driver) CreateSATAController(vmName string, name string) error {
 	return d.VBoxManage(command...)
 }
 
+func (d *VBox42Driver) CreateSCSIController(vmName string, name string) error {
+
+	command := []string{
+		"storagectl", vmName,
+		"--name", name,
+		"--add", "scsi",
+    "--controller", "LSILogic",
+	}
+
+	return d.VBoxManage(command...)
+}
+
 func (d *VBox42Driver) Delete(name string) error {
 	return d.VBoxManage("unregistervm", name, "--delete")
 }

builder/virtualbox/common/driver_mock.go

@@ -9,6 +9,10 @@ type DriverMock struct {
 	CreateSATAControllerController string
 	CreateSATAControllerErr        error
 
+  CreateSCSIControllerVM         string
+	CreateSCSIControllerController string
+	CreateSCSIControllerErr        error
+
 	DeleteCalled bool
 	DeleteName   string
 	DeleteErr    error
@@ -49,6 +53,12 @@ func (d *DriverMock) CreateSATAController(vm string, controller string) error {
 	return d.CreateSATAControllerErr
 }
 
+func (d *DriverMock) CreateSCSIController(vm string, controller string) error {
+  d.CreateSCSIControllerVM = vm
+  d.CreateSCSIControllerController = vm
+  return d.CreateSCSIControllerErr
+}
+
 func (d *DriverMock) Delete(name string) error {
 	d.DeleteCalled = true
 	d.DeleteName = name

builder/virtualbox/iso/builder.go

@@ -158,9 +158,9 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 		}
 	}
 
-	if b.config.HardDriveInterface != "ide" && b.config.HardDriveInterface != "sata" {
+	if b.config.HardDriveInterface != "ide" && b.config.HardDriveInterface != "sata" && b.config.HardDriveInterface != "scsi" {
 		errs = packer.MultiErrorAppend(
-			errs, errors.New("hard_drive_interface can only be ide or sata"))
+			errs, errors.New("hard_drive_interface can only be ide, sata, or scsi"))
 	}
 
 	if b.config.ISOChecksumType == "" {

builder/virtualbox/iso/step_create_disk.go

@@ -63,11 +63,24 @@ func (s *stepCreateDisk) Run(state multistep.StateBag) multistep.StepAction {
 		}
 	}
 
+  if config.HardDriveInterface == "scsi" {
+    if err := driver.CreateSCSIController(vmName, "SCSI Controller"); err != nil {
+      err := fmt.Errorf("Error creating disk controller: %s", err)
+      state.Put("error", err)
+      ui.Error(err.Error())
+      return multistep.ActionHalt
+    }
+  }
+
 	// Attach the disk to the controller
 	controllerName := "IDE Controller"
 	if config.HardDriveInterface == "sata" {
 		controllerName = "SATA Controller"
 	}
+  
+  if config.HardDriveInterface == "scsi" {
+    controllerName = "SCSI Controller"
+  }
 
 	command = []string{
 		"storageattach", vmName,