Fix spelling mistakes in nova.virt

Change-Id: Ic5ff80af956726b768610290e4fae7dd46549711

nova/virt/disk/api.py

@@ -159,7 +159,7 @@ def can_resize_fs(image, size, use_cow=False):
 
 
 def bind(src, target, instance_name):
-    """Bind device to a filesytem"""
+    """Bind device to a filesystem"""
     if src:
         utils.execute('touch', target, run_as_root=True)
         utils.execute('mount', '-o', 'bind', src, target,

nova/virt/disk/mount/api.py

@@ -109,7 +109,7 @@ class Mount(object):
         """Some implementations need to retry their get_dev."""
         # NOTE(mikal): This method helps implement retries. The implementation
         # simply calls _get_dev_retry_helper from their get_dev, and implements
-        # _inner_get_dev with their device acquistion logic. The NBD
+        # _inner_get_dev with their device acquisition logic. The NBD
         # implementation has an example.
         start_time = time.time()
         device = self._inner_get_dev()

nova/virt/disk/vfs/api.py

@@ -91,7 +91,7 @@ class VFS(object):
 
     """
     Replace the entire contents of the file identified
-    by @path, wth @content, creating the file if it does
+    by @path, with @content, creating the file if it does
     not already exist
     """
     def replace_file(self, path, content):

nova/virt/firewall.py

@@ -53,7 +53,7 @@ class FirewallDriver(object):
     """ Firewall Driver base class.
 
         Defines methods that any driver providing security groups
-        and provider fireall functionality should implement.
+        and provider firewall functionality should implement.
     """
     def __init__(self, virtapi):
         self._virtapi = virtapi

nova/virt/netutils.py

@@ -18,7 +18,7 @@
 #    under the License.
 
 
-"""Network-releated utilities for supporting libvirt connection code."""
+"""Network-related utilities for supporting libvirt connection code."""
 
 
 import netaddr