diff --git a/cinder/volume/drivers/hpe/hpe_3par_common.py b/cinder/volume/drivers/hpe/hpe_3par_common.py
index ba4d4ea5ceb..971fac3e859 100644
--- a/cinder/volume/drivers/hpe/hpe_3par_common.py
+++ b/cinder/volume/drivers/hpe/hpe_3par_common.py
@@ -3092,7 +3092,7 @@ class HPE3PARCommon(object):
 
     def _get_updated_comment(self, vol_name, **values):
         vol = self.client.getVolume(vol_name)
-        comment = json.loads(vol['comment']) if vol['comment'] else {}
+        comment = json.loads(vol['comment']) if vol.get('comment') else {}
         comment.update(values)
 
     def _update_comment(self, vol_name, **values):
diff --git a/releasenotes/notes/bug-2008931-hpe-keyerror-on-migration-71d31e6c0a8ab0d9.yaml b/releasenotes/notes/bug-2008931-hpe-keyerror-on-migration-71d31e6c0a8ab0d9.yaml
new file mode 100644
index 00000000000..1e5f09f860f
--- /dev/null
+++ b/releasenotes/notes/bug-2008931-hpe-keyerror-on-migration-71d31e6c0a8ab0d9.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    HPE 3PAR driver `bug #2008931
+    <https://bugs.launchpad.net/cinder/+bug/2008931>`_: Fixed
+    issue when performing migrate volume operation when `comment`
+    attribute is missing from the volume.