Update targets information when creating target.

tgt-admin needs to use --execute --update to tell
tgtd to re-read its configuration files when target
is created.

(LP: #1031509)

Change-Id: I71fe4d90a8cc9bcf7a4817aefd6de52e216102a4
Signed-off-by: Chuck Short <chuck.short@canonical.com>

nova/tests/test_iscsi.py

@@ -85,7 +85,7 @@ def setUp(self):
         self.flags(iscsi_helper='tgtadm')
         self.flags(volumes_dir="./")
         self.script_template = "\n".join([
-        "tgt-admin --conf ./blaa --update blaa",
+        "tgt-admin --execute --conf ./blaa --update blaa",
         "tgtadm --op show --lld=iscsi --mode=target --tid=1",
         "tgt-admin --conf ./blaa --delete blaa"])
 

nova/volume/iscsi.py

@@ -115,7 +115,7 @@ def create_iscsi_target(self, name, tid, lun, path, **kwargs):
                 f.write(volume_conf)
                 f.close()
 
-            self._execute('tgt-admin', '--conf %s' % volume_path,
+            self._execute('tgt-admin', '--execute', '--conf %s' % volume_path,
                         '--update %s' % vol_id, run_as_root=True)
 
         except Exception as ex: