From 8ee3bb2d1678846a7171480ad84d8bd06e244376 Mon Sep 17 00:00:00 2001
From: Dainis Tillers <dainis@loveclients.com>
Date: Wed, 8 Apr 2015 14:21:39 +0300
Subject: [PATCH 1/3] Added - create disk from snapshot

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

diff --git a/builtin/providers/google/resource_compute_disk.go b/builtin/providers/google/resource_compute_disk.go
index 56b7ed25f..7202e45d9 100644
--- a/builtin/providers/google/resource_compute_disk.go
+++ b/builtin/providers/google/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 22616764fc7a996e44aea77f79a387b6519ce43f Mon Sep 17 00:00:00 2001
From: Dainis Tillers <dainis@loveclients.com>
Date: Thu, 16 Oct 2014 16:43:52 +0300
Subject: [PATCH 2/3] Added - disk device name

---
 builtin/providers/google/resource_compute_instance.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/builtin/providers/google/resource_compute_instance.go b/builtin/providers/google/resource_compute_instance.go
index d89e82a43..5b49a4b7a 100644
--- a/builtin/providers/google/resource_compute_instance.go
+++ b/builtin/providers/google/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)
 	}
 

From b05780cdfef36e8b40abde0d6598adc1497568cb Mon Sep 17 00:00:00 2001
From: Dainis Tillers <dainis@loveclients.com>
Date: Wed, 8 Apr 2015 14:41:47 +0300
Subject: [PATCH 3/3] Added - documentation about added features

---
 .../source/docs/providers/google/r/compute_disk.html.markdown  | 2 ++
 .../docs/providers/google/r/compute_instance.html.markdown     | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/website/source/docs/providers/google/r/compute_disk.html.markdown b/website/source/docs/providers/google/r/compute_disk.html.markdown
index 4a8388bca..f38da7e40 100644
--- a/website/source/docs/providers/google/r/compute_disk.html.markdown
+++ b/website/source/docs/providers/google/r/compute_disk.html.markdown
@@ -34,6 +34,8 @@ The following arguments are supported:
   contraction of the form "project/name", or just a name (in which case the current project is
 used).
 
+* `snapshot` - (Optional) Name of snapshot from which to initialize this disk;
+
 * `size` - (Optional) The size of the image in gigabytes. If not specified,
     it will inherit the size of its base image.
 
diff --git a/website/source/docs/providers/google/r/compute_instance.html.markdown b/website/source/docs/providers/google/r/compute_instance.html.markdown
index 3d3104d17..a0361c5a5 100644
--- a/website/source/docs/providers/google/r/compute_instance.html.markdown
+++ b/website/source/docs/providers/google/r/compute_instance.html.markdown
@@ -96,6 +96,9 @@ The `disk` block supports:
 * `size` - (Optional) The size of the image in gigabytes. If not specified,
     it will inherit the size of its base image.
 
+* `device_name` - (Optional) Name with which attached disk will be accessible
+    under `/dev/disk/by-id/`
+
 The `network_interface` block supports:
 
 * `network` - (Required) The name of the network to attach this interface to.