From 54bff0e3b5824523e272cf9c32d82d6e71ba78d3 Mon Sep 17 00:00:00 2001
From: Dainis Tillers <dainis@loveclients.com>
Date: Wed, 8 Apr 2015 14:21:39 +0300
Subject: [PATCH 1/2] Added - create disk from snapshot

---
 resource_compute_disk.go | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/resource_compute_disk.go b/resource_compute_disk.go
index 56b7ed25..7202e45d 100644
--- a/resource_compute_disk.go
+++ b/resource_compute_disk.go
@@ -47,6 +47,12 @@ func resourceComputeDisk() *schema.Resource {
 				ForceNew: true,
 			},
 
+			"snapshot": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+			},
+
 			"self_link": &schema.Schema{
 				Type:     schema.TypeString,
 				Computed: true,
@@ -98,6 +104,21 @@ func resourceComputeDiskCreate(d *schema.ResourceData, meta interface{}) error {
 		disk.Type = diskType.SelfLink
 	}
 
+	if v, ok := d.GetOk("snapshot"); ok {
+		snapshotName := v.(string)
+		log.Printf("[DEBUG] Loading snapshot: %s", snapshotName)
+		snapshotData, err := config.clientCompute.Snapshots.Get(
+			config.Project, snapshotName).Do()
+
+		if err != nil {
+			return fmt.Errorf(
+				"Error loading snapshot '%s': %s",
+				snapshotName, err)
+		}
+
+		disk.SourceSnapshot = snapshotData.SelfLink
+	}
+
 	op, err := config.clientCompute.Disks.Insert(
 		config.Project, d.Get("zone").(string), disk).Do()
 	if err != nil {
@@ -116,7 +137,14 @@ func resourceComputeDiskCreate(d *schema.ResourceData, meta interface{}) error {
 		Type:    OperationWaitZone,
 	}
 	state := w.Conf()
-	state.Timeout = 2 * time.Minute
+
+	if disk.SourceSnapshot != "" {
+		//creating disk from snapshot takes some time
+		state.Timeout = 10 * time.Minute
+	} else {
+		state.Timeout = 2 * time.Minute
+	}
+
 	state.MinTimeout = 1 * time.Second
 	opRaw, err := state.WaitForState()
 	if err != nil {

From c3317e3560631212e6f78f501ee111839dbb7575 Mon Sep 17 00:00:00 2001
From: Dainis Tillers <dainis@loveclients.com>
Date: Thu, 16 Oct 2014 16:43:52 +0300
Subject: [PATCH 2/2] Added - disk device name

---
 resource_compute_instance.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/resource_compute_instance.go b/resource_compute_instance.go
index d89e82a4..5b49a4b7 100644
--- a/resource_compute_instance.go
+++ b/resource_compute_instance.go
@@ -81,6 +81,11 @@ func resourceComputeInstance() *schema.Resource {
 							Optional: true,
 							ForceNew: true,
 						},
+
+						"device_name": &schema.Schema{
+							Type: schema.TypeString,
+							Optional: true,
+						},
 					},
 				},
 			},
@@ -339,6 +344,10 @@ func resourceComputeInstanceCreate(d *schema.ResourceData, meta interface{}) err
 			disk.InitializeParams.DiskSizeGb = int64(diskSizeGb)
 		}
 
+		if v, ok := d.GetOk(prefix  + ".device_name"); ok {
+			disk.DeviceName = v.(string)
+		}
+
 		disks = append(disks, &disk)
 	}