diff --git a/hyperv/nova/imagecache.py b/hyperv/nova/imagecache.py
index 07b1f493..a81d5da3 100644
--- a/hyperv/nova/imagecache.py
+++ b/hyperv/nova/imagecache.py
@@ -18,12 +18,12 @@ Image caching and management.
 import os
 import re
 
+import nova.conf
 from nova import exception
 from nova import utils
 from nova.virt import imagecache
 from nova.virt import images
 from os_win import utilsfactory
-from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import excutils
 from oslo_utils import units
@@ -34,7 +34,7 @@ from hyperv.nova import pathutils
 
 LOG = logging.getLogger(__name__)
 
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 CONF.import_opt('use_cow_images', 'nova.virt.driver')
 CONF.import_opt('instances_path', 'nova.compute.manager')
 CONF.import_opt('remove_unused_original_minimum_age_seconds',
diff --git a/hyperv/nova/livemigrationops.py b/hyperv/nova/livemigrationops.py
index a6b36bda..abb8b612 100644
--- a/hyperv/nova/livemigrationops.py
+++ b/hyperv/nova/livemigrationops.py
@@ -18,8 +18,9 @@ Management class for live migration VM operations.
 """
 import functools
 
+import nova.conf
+from nova.objects import migrate_data as migrate_data_obj
 from os_win import utilsfactory
-from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_utils import excutils
 
@@ -32,8 +33,7 @@ from hyperv.nova import vmops
 from hyperv.nova import volumeops
 
 LOG = logging.getLogger(__name__)
-CONF = cfg.CONF
-CONF.import_opt('use_cow_images', 'nova.virt.driver')
+CONF = nova.conf.CONF
 
 
 def check_os_version_requirement(function):
@@ -122,7 +122,7 @@ class LiveMigrationOps(object):
                                            block_migration=False,
                                            disk_over_commit=False):
         LOG.debug("check_can_live_migrate_destination called", instance_ref)
-        return {}
+        return migrate_data_obj.LiveMigrateData()
 
     @check_os_version_requirement
     def check_can_live_migrate_destination_cleanup(self, ctxt,
diff --git a/hyperv/nova/pathutils.py b/hyperv/nova/pathutils.py
index 4dbf92fa..c712b6aa 100644
--- a/hyperv/nova/pathutils.py
+++ b/hyperv/nova/pathutils.py
@@ -19,13 +19,10 @@ import time
 from nova import exception
 from os_win.utils import pathutils
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from hyperv.i18n import _
 from hyperv.nova import constants
 
-LOG = logging.getLogger(__name__)
-
 hyperv_opts = [
     cfg.StrOpt('instances_path_share',
                default="",
diff --git a/hyperv/nova/snapshotops.py b/hyperv/nova/snapshotops.py
index e2184739..1bc24210 100644
--- a/hyperv/nova/snapshotops.py
+++ b/hyperv/nova/snapshotops.py
@@ -24,13 +24,11 @@ from nova.image import glance
 from nova import utils
 from os_win import exceptions as os_win_exc
 from os_win import utilsfactory
-from oslo_config import cfg
 from oslo_log import log as logging
 
-from hyperv.i18n import _LW
+from hyperv.i18n import _LE
 from hyperv.nova import pathutils
 
-CONF = cfg.CONF
 LOG = logging.getLogger(__name__)
 
 
@@ -60,7 +58,7 @@ class SnapshotOps(object):
         try:
             instance_synchronized_snapshot()
         except os_win_exc.HyperVVMNotFoundException:
-            # the instance might dissapear before starting the operation.
+            # the instance might disappear before starting the operation.
             raise exception.InstanceNotFound(instance_id=instance.uuid)
 
     def _snapshot(self, context, instance, image_id, update_task_state):
@@ -129,10 +127,9 @@ class SnapshotOps(object):
             try:
                 LOG.debug("Removing snapshot %s", image_id)
                 self._vmutils.remove_vm_snapshot(snapshot_path)
-            except Exception as ex:
-                LOG.exception(ex)
-                LOG.warning(_LW('Failed to remove snapshot for VM %s'),
-                            instance_name)
+            except Exception:
+                LOG.exception(_LE('Failed to remove snapshot for VM %s'),
+                              instance_name, instance=instance)
             if export_dir:
                 LOG.debug('Removing directory: %s', export_dir)
                 self._pathutils.rmtree(export_dir)
diff --git a/hyperv/nova/vif.py b/hyperv/nova/vif.py
index 831a8a5b..a6a9dc0e 100644
--- a/hyperv/nova/vif.py
+++ b/hyperv/nova/vif.py
@@ -20,7 +20,6 @@ from nova.i18n import _
 from nova.network import model as network_model
 from os_win import utilsfactory
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from hyperv.nova import ovsutils
 
@@ -36,8 +35,6 @@ CONF = cfg.CONF
 CONF.register_opts(hyperv_opts, 'hyperv')
 CONF.import_opt('network_api_class', 'nova.network')
 
-LOG = logging.getLogger(__name__)
-
 
 class HyperVBaseVIFDriver(object):
     @abc.abstractmethod
diff --git a/hyperv/nova/vmops.py b/hyperv/nova/vmops.py
index 2070b3f1..1f438ad2 100644
--- a/hyperv/nova/vmops.py
+++ b/hyperv/nova/vmops.py
@@ -24,6 +24,7 @@ import time
 from eventlet import timeout as etimeout
 from nova.api.metadata import base as instance_metadata
 from nova.compute import vm_states
+import nova.conf
 from nova import exception
 from nova import objects
 from nova import utils
@@ -95,7 +96,7 @@ hyperv_opts = [
                      'RDS-Virtualization feature has to be enabled')
 ]
 
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 CONF.register_opts(hyperv_opts, 'hyperv')
 CONF.import_opt('use_cow_images', 'nova.virt.driver')