Merge pull request #1890 from SvenDowideit/resize_and_autoformat

Test resize, and update docs

docs/os/configuration/resizing-device-partition/index.md

@@ -7,7 +7,7 @@ layout: os-default
 ## Resizing a Device Partition
 ---
 
-The `resize_device` cloud config option can be used to automatically extend the first partition to fill the size of it's device.
+The `resize_device` cloud config option can be used to automatically extend the first partition (assuming its `ext4`) to fill the size of it's device.
 
 Once the partition has been resized to fill the device, a `/var/lib/rancher/resizefs.done` file will be written to prevent the resize tools from being run again. If you need it to run again, delete that file and reboot.
 

docs/os/storage/state-partition/index.md

@@ -14,16 +14,23 @@ rancher:
   state:
     fstype: auto
     dev: LABEL=RANCHER_STATE
-    autoformat:
-    - /dev/sda
-    - /dev/vda
 ```
 
 ### Autoformat
 
-You can specify a list of devices to check to format on boot.  If the state partition is already found, RancherOS will not try to auto format a partition. By default, auto-formatting is off.
+You can specify a list of devices to check to format on boot. If the state partition is already found, RancherOS will not try to auto format a partition. By default, auto-formatting is off.
 
-RancherOS will autoformat the partition to ext4 if the device specified in `autoformat`:
+RancherOS will autoformat the partition to `ext4` (_not_ what is set in `fstype`) if the device specified in `autoformat`:
 
 * Contains a boot2docker magic string
 * Starts with 1 megabyte of zeros and `rancher.state.formatzero` is true
+
+
+```yaml
+#cloud-config
+rancher:
+  state:
+    autoformat:
+    - /dev/sda
+    - /dev/vda
+```