provider/openstack: Enforce ForceNew on Instance Block Device

This commit causes openstack_compute_instance_v2 resources to be
destroyed and recreated upon changes to any block_device argument.

builtin/providers/openstack/resource_openstack_compute_instance_v2.go

@@ -193,37 +193,43 @@ func resourceComputeInstanceV2() *schema.Resource {
 			"block_device": &schema.Schema{
 				Type:     schema.TypeList,
 				Optional: true,
-				ForceNew: true,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"source_type": &schema.Schema{
 							Type:     schema.TypeString,
 							Required: true,
+							ForceNew: true,
 						},
 						"uuid": &schema.Schema{
 							Type:     schema.TypeString,
 							Optional: true,
+							ForceNew: true,
 						},
 						"volume_size": &schema.Schema{
 							Type:     schema.TypeInt,
 							Optional: true,
+							ForceNew: true,
 						},
 						"destination_type": &schema.Schema{
 							Type:     schema.TypeString,
 							Optional: true,
+							ForceNew: true,
 						},
 						"boot_index": &schema.Schema{
 							Type:     schema.TypeInt,
 							Optional: true,
+							ForceNew: true,
 						},
 						"delete_on_termination": &schema.Schema{
 							Type:     schema.TypeBool,
 							Optional: true,
 							Default:  false,
+							ForceNew: true,
 						},
 						"guest_format": &schema.Schema{
 							Type:     schema.TypeString,
 							Optional: true,
+							ForceNew: true,
 						},
 					},
 				},

builtin/providers/openstack/resource_openstack_compute_instance_v2_test.go

@@ -426,6 +426,61 @@ func TestAccComputeV2Instance_bootFromVolumeVolume(t *testing.T) {
 	})
 }
 
+func TestAccComputeV2Instance_bootFromVolumeForceNew(t *testing.T) {
+	var instance1_1 servers.Server
+	var instance1_2 servers.Server
+	var testAccComputeV2Instance_bootFromVolumeForceNew_1 = fmt.Sprintf(`
+		resource "openstack_compute_instance_v2" "instance_1" {
+			name = "instance_1"
+			security_groups = ["default"]
+			block_device {
+				uuid = "%s"
+				source_type = "image"
+				volume_size = 5
+				boot_index = 0
+				destination_type = "volume"
+				delete_on_termination = true
+			}
+		}`,
+		os.Getenv("OS_IMAGE_ID"))
+
+	var testAccComputeV2Instance_bootFromVolumeForceNew_2 = fmt.Sprintf(`
+		resource "openstack_compute_instance_v2" "instance_1" {
+			name = "instance_1"
+			security_groups = ["default"]
+			block_device {
+				uuid = "%s"
+				source_type = "image"
+				volume_size = 4
+				boot_index = 0
+				destination_type = "volume"
+				delete_on_termination = true
+			}
+		}`,
+		os.Getenv("OS_IMAGE_ID"))
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckComputeV2InstanceDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccComputeV2Instance_bootFromVolumeForceNew_1,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckComputeV2InstanceExists(t, "openstack_compute_instance_v2.instance_1", &instance1_1),
+				),
+			},
+			resource.TestStep{
+				Config: testAccComputeV2Instance_bootFromVolumeForceNew_2,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckComputeV2InstanceExists(t, "openstack_compute_instance_v2.instance_1", &instance1_2),
+					testAccCheckComputeV2InstanceInstanceIDsDoNotMatch(&instance1_1, &instance1_2),
+				),
+			},
+		},
+	})
+}
+
 // TODO: verify the personality really exists on the instance.
 func TestAccComputeV2Instance_personality(t *testing.T) {
 	var instance servers.Server

website/source/docs/providers/openstack/r/compute_instance_v2.html.markdown

@@ -290,22 +290,26 @@ The `network` block supports:
 
 The `block_device` block supports:
 
-* `uuid` - (Required unless `source_type` is set to `"blank"` ) The UUID of the image, volume, or snapshot.
+* `uuid` - (Required unless `source_type` is set to `"blank"` ) The UUID of
+    the image, volume, or snapshot. Changing this creates a new server.
 
 * `source_type` - (Required) The source type of the device. Must be one of
-    "blank", "image", "volume", or "snapshot".
+    "blank", "image", "volume", or "snapshot". Changing this creates a new
+    server.
 
 * `volume_size` - The size of the volume to create (in gigabytes). Required
     in the following combinations: source=image and destination=volume,
-    source=blank and destination=local.
+    source=blank and destination=local. Changing this creates a new server.
 
 * `boot_index` - (Optional) The boot index of the volume. It defaults to 0.
+    Changing this creates a new server.
 
 * `destination_type` - (Optional) The type that gets created. Possible values
-    are "volume" and "local".
+    are "volume" and "local". Changing this creates a new server.
 
 * `delete_on_termination` - (Optional) Delete the volume / block device upon
-    termination of the instance. Defaults to false.
+    termination of the instance. Defaults to false. Changing this creates a
+    new server.
 
 The `volume` block supports: