From c0ca847286b88f37e3b4cb6b394fced4b60ed06f Mon Sep 17 00:00:00 2001
From: Chris Behrens <cbehrens@codestud.com>
Date: Fri, 21 Jun 2013 03:41:54 +0000
Subject: Retry quota_reserve on DBDeadlock

quota_reserve() can raise DBDeadlock... so this adds the decorator that
retries the transaction.

Fixes bug 1193199

Change-Id: Id632360372b21f3e75a2af50153eb18cc2025390
---
 nova/db/sqlalchemy/api.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nova/db/sqlalchemy/api.py b/nova/db/sqlalchemy/api.py
index fd79ae215..faece8375 100644
--- a/nova/db/sqlalchemy/api.py
+++ b/nova/db/sqlalchemy/api.py
@@ -2788,6 +2788,7 @@ def _get_quota_usages(context, session, project_id):
 
 
 @require_context
+@_retry_on_deadlock
 def quota_reserve(context, resources, quotas, deltas, expire,
                   until_refresh, max_age, project_id=None):
     elevated = context.elevated()
-- 
cgit