fast shutdown if ids are still synced

oml/library.py

@@ -316,7 +316,7 @@ def sync_db():
         if sort_ids:
             t0 = time.time()
             commit = False
-            for i in item.models.Item.query:
+            for i in item.models.Item.query.options(load_only('id')):
                 if i.id not in sort_ids:
                     i.update(commit=False)
                     if i.info['mediastate'] == 'unavailable' and state.tasks:
@@ -324,12 +324,14 @@ def sync_db():
                     commit = True
                     #logger.debug('sync:%s', i)
                     t0 = maybe_commit(t0)
-                    if state.shutdown:
-                        break
+                if state.shutdown:
+                    break
             if commit:
                 state.db.session.commit()
-    cleanup_lists()
-    cleanup_peers()
+    if not state.shutdown:
+        cleanup_lists()
+    if not state.shutdown:
+        cleanup_peers()
 
 def cleanup_lists():
     import item.models