diff --git a/hooks/charmhelpers/contrib/openstack/utils.py b/hooks/charmhelpers/contrib/openstack/utils.py
index f4af1769..3cfc983e 100644
--- a/hooks/charmhelpers/contrib/openstack/utils.py
+++ b/hooks/charmhelpers/contrib/openstack/utils.py
@@ -131,40 +131,40 @@ SWIFT_CODENAMES = OrderedDict([
 # >= Liberty version->codename mapping
 PACKAGE_CODENAMES = {
     'nova-common': OrderedDict([
-        ('12.0.0', 'liberty'),
-        ('13.0.0', 'mitaka'),
+        ('12.0', 'liberty'),
+        ('13.0', 'mitaka'),
     ]),
     'neutron-common': OrderedDict([
-        ('7.0.0', 'liberty'),
-        ('8.0.0', 'mitaka'),
+        ('7.0', 'liberty'),
+        ('8.0', 'mitaka'),
     ]),
     'cinder-common': OrderedDict([
-        ('7.0.0', 'liberty'),
-        ('8.0.0', 'mitaka'),
+        ('7.0', 'liberty'),
+        ('8.0', 'mitaka'),
     ]),
     'keystone': OrderedDict([
-        ('8.0.0', 'liberty'),
-        ('9.0.0', 'mitaka'),
+        ('8.0', 'liberty'),
+        ('9.0', 'mitaka'),
     ]),
     'horizon-common': OrderedDict([
-        ('8.0.0', 'liberty'),
-        ('9.0.0', 'mitaka'),
+        ('8.0', 'liberty'),
+        ('9.0', 'mitaka'),
     ]),
     'ceilometer-common': OrderedDict([
-        ('5.0.0', 'liberty'),
-        ('6.0.0', 'mitaka'),
+        ('5.0', 'liberty'),
+        ('6.0', 'mitaka'),
     ]),
     'heat-common': OrderedDict([
-        ('5.0.0', 'liberty'),
-        ('6.0.0', 'mitaka'),
+        ('5.0', 'liberty'),
+        ('6.0', 'mitaka'),
     ]),
     'glance-common': OrderedDict([
-        ('11.0.0', 'liberty'),
-        ('12.0.0', 'mitaka'),
+        ('11.0', 'liberty'),
+        ('12.0', 'mitaka'),
     ]),
     'openstack-dashboard': OrderedDict([
-        ('8.0.0', 'liberty'),
-        ('9.0.0', 'mitaka'),
+        ('8.0', 'liberty'),
+        ('9.0', 'mitaka'),
     ]),
 }
 
@@ -251,7 +251,14 @@ def get_os_codename_package(package, fatal=True):
         error_out(e)
 
     vers = apt.upstream_version(pkg.current_ver.ver_str)
-    match = re.match('^(\d+)\.(\d+)\.(\d+)', vers)
+    if 'swift' in pkg.name:
+        # Fully x.y.z match for swift versions
+        match = re.match('^(\d+)\.(\d+)\.(\d+)', vers)
+    else:
+        # x.y match only for 20XX.X
+        # and ignore patch level for other packages
+        match = re.match('^(\d+)\.(\d+)', vers)
+
     if match:
         vers = match.group(0)
 
@@ -263,13 +270,8 @@ def get_os_codename_package(package, fatal=True):
         # < Liberty co-ordinated project versions
         try:
             if 'swift' in pkg.name:
-                swift_vers = vers[:5]
-                if swift_vers not in SWIFT_CODENAMES:
-                    # Deal with 1.10.0 upward
-                    swift_vers = vers[:6]
-                return SWIFT_CODENAMES[swift_vers]
+                return SWIFT_CODENAMES[vers]
             else:
-                vers = vers[:6]
                 return OPENSTACK_CODENAMES[vers]
         except KeyError:
             if not fatal:
diff --git a/hooks/charmhelpers/core/kernel.py b/hooks/charmhelpers/core/kernel.py
new file mode 100644
index 00000000..5dc64952
--- /dev/null
+++ b/hooks/charmhelpers/core/kernel.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright 2014-2015 Canonical Limited.
+#
+# This file is part of charm-helpers.
+#
+# charm-helpers is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# charm-helpers is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with charm-helpers.  If not, see <http://www.gnu.org/licenses/>.
+
+__author__ = "Jorge Niedbalski <jorge.niedbalski@canonical.com>"
+
+from charmhelpers.core.hookenv import (
+    log,
+    INFO
+)
+
+from subprocess import check_call, check_output
+import re
+
+
+def modprobe(module, persist=True):
+    """Load a kernel module and configure for auto-load on reboot."""
+    cmd = ['modprobe', module]
+
+    log('Loading kernel module %s' % module, level=INFO)
+
+    check_call(cmd)
+    if persist:
+        with open('/etc/modules', 'r+') as modules:
+            if module not in modules.read():
+                modules.write(module)
+
+
+def rmmod(module, force=False):
+    """Remove a module from the linux kernel"""
+    cmd = ['rmmod']
+    if force:
+        cmd.append('-f')
+    cmd.append(module)
+    log('Removing kernel module %s' % module, level=INFO)
+    return check_call(cmd)
+
+
+def lsmod():
+    """Shows what kernel modules are currently loaded"""
+    return check_output(['lsmod'],
+                        universal_newlines=True)
+
+
+def is_module_loaded(module):
+    """Checks if a kernel module is already loaded"""
+    matches = re.findall('^%s[ ]+' % module, lsmod(), re.M)
+    return len(matches) > 0
+
+
+def update_initramfs(version='all'):
+    """Updates an initramfs image"""
+    return check_call(["update-initramfs", "-k", version, "-u"])