From 63ba0e4a18e1a456c97f3b86ad882e0910f75335 Mon Sep 17 00:00:00 2001
From: Claudiu Belu <cbelu@cloudbasesolutions.com>
Date: Thu, 27 Aug 2015 20:29:36 +0300
Subject: [PATCH] live-migration: Logs exception if operation failed

Live-migration can fail silently, without proper logging, making it
hard to determine the cause of the failure.

Closes-Bug: #1489874

Change-Id: Ib70dafd6fe2658ae9a1a43d177f4ed2c99a10c04
---
 nova/compute/manager.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index 3447654ebd71..bed2318bcdae 100644
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -5005,6 +5005,7 @@ class ComputeManager(manager.Manager):
             # Executing live migration
             # live_migration might raises exceptions, but
             # nothing must be recovered in this version.
+            LOG.exception(_LE('Live migration failed.'), instance=instance)
             with excutils.save_and_reraise_exception():
                 if migration:
                     migration.status = 'failed'