NetApp fix eseries concurrent vol map failure

This fixes the issue while mapping volume to host
when the requests are very close in time proximity.
The map operation has been synchronized.

Change-Id: I2e120d84d3b96faa4ab8d4324e70a089bcddeaa5
Closes-bug: #1312685

diff --git a/cinder/volume/drivers/netapp/eseries/iscsi.py b/cinder/volume/drivers/netapp/eseries/iscsi.py
index 39dd80371bde752509a80b035318d8d18fb07c70..694f882ee55c58a2eb62743cfa71b03fa4cd8c72 100644 (file)
--- a/cinder/volume/drivers/netapp/eseries/iscsi.py
+++ b/cinder/volume/drivers/netapp/eseries/iscsi.py
@@ -26,6 +26,7 @@ from cinder import exception
 from cinder.openstack.common import excutils
 from cinder.openstack.common import log as logging
 from cinder import units
+from cinder import utils as cinder_utils
 from cinder.volume import driver
 from cinder.volume.drivers.netapp.eseries import client
 from cinder.volume.drivers.netapp.options import netapp_basicauth_opts
@@ -512,6 +513,7 @@ class Driver(driver.ISCSIDriver):
         raise exception.NetAppDriverException(
             msg % self._client.get_system_id())
 
+    @cinder_utils.synchronized('map_es_volume')
     def _map_volume_to_host(self, vol, initiator):
         """Maps the e-series volume to host with initiator."""
         host = self._get_or_create_host(initiator)