Improve the logs

pkg/controller/snapshot_controller.go

@@ -559,27 +559,31 @@ func (ctrl *csiSnapshotController) checkandUpdateBoundSnapshotStatusOperation(sn
 	var timestamp int64
 	var size int64
 	var readyToUse = false
+	var driverName string
+	var snapshotID string
 
 	if snapshot.Spec.Source == nil {
-		glog.V(5).Infof("checkandUpdateBoundSnapshotStatusOperation: snapshot [%s] is pre-bound to content [%s]", snapshot.Name, content.Name)
+		glog.V(5).Infof("checkandUpdateBoundSnapshotStatusOperation: checking whether snapshot [%s] is pre-bound to content [%s]", snapshot.Name, content.Name)
 		readyToUse, timestamp, size, err = ctrl.handler.GetSnapshotStatus(content)
 		if err != nil {
+			glog.Errorf("checkandUpdateBoundSnapshotStatusOperation: failed to call get snapshot status to check whether snapshot is ready to use %q", err)
 			return nil, err
 		}
+		if content.Spec.CSI != nil {
+			driverName, snapshotID = content.Spec.CSI.Driver, content.Spec.CSI.SnapshotHandle
+		}
 	} else {
 		class, volume, _, snapshotterCredentials, err := ctrl.getCreateSnapshotInput(snapshot)
 		if err != nil {
 			return nil, fmt.Errorf("failed to get input parameters to create snapshot %s: %q", snapshot.Name, err)
 		}
-		var driverName string
-		var snapshotID string
 		driverName, snapshotID, timestamp, size, readyToUse, err = ctrl.handler.CreateSnapshot(snapshot, volume, class.Parameters, snapshotterCredentials)
 		if err != nil {
 			glog.Errorf("checkandUpdateBoundSnapshotStatusOperation: failed to call create snapshot to check whether the snapshot is ready to use %q", err)
 			return nil, err
 		}
-		glog.V(5).Infof("checkandUpdateBoundSnapshotStatusOperation: driver %s, snapshotId %s, timestamp %d, size %d, readyToUse %t", driverName, snapshotID, timestamp, size, readyToUse)
 	}
+	glog.V(5).Infof("checkandUpdateBoundSnapshotStatusOperation: driver %s, snapshotId %s, timestamp %d, size %d, readyToUse %t", driverName, snapshotID, timestamp, size, readyToUse)
 
 	if timestamp == 0 {
 		timestamp = time.Now().UnixNano()