删除虚拟机同时删除lb相关记录

pkg/compute/models/guest_actions.go

@@ -2060,6 +2060,15 @@ func (self *SGuest) DoPendingDelete(ctx context.Context, userCred mcclient.Token
 			self.DetachDisk(ctx, disk, userCred)
 		}
 	}
+	backends := []SLoadbalancerBackend{}
+	q := LoadbalancerBackendManager.Query().Equals("backend_id", self.Id).IsFalse("pending_deleted")
+	err := db.FetchModelObjects(LoadbalancerBackendManager, q, &backends)
+	if err != nil {
+		log.Errorf("failed to get backends for guest %s(%s)", self.Name, self.Id)
+	}
+	for i := 0; i < len(backends); i++ {
+		backends[i].DoPendingDelete(ctx, userCred)
+	}
 	self.SVirtualResourceBase.DoPendingDelete(ctx, userCred)
 }