Driver initilization is not successful for GPFSNFSDriver

when cinder node and GPFS node are different, os.path.isdir command fails as it tries to check the remote path on local cinder node

2015-08-14 04:45:57.026 25903 ERROR cinder.volume.drivers.ibm.gpfs [req-0f174eb4-6368-4910-9b5b-ea7c029f9dbb - - - - -] /john0/openstack/cinder/volumes/ is not a directory.
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager [req-0f174eb4-6368-4910-9b5b-ea7c029f9dbb - - - - -] Failed to initialize driver.
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager Traceback (most recent call last):
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 308, in init_host
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager self.driver.check_for_setup_error()
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/osprofiler/profiler.py", line 105, in wrapper
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager return f(*args, **kwargs)
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/ibm/gpfs.py", line 427, in check_for_setup_error
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager raise exception.VolumeBackendAPIException(data=msg)
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: /john0/openstack/cinder/volumes/ is not a directory.
2015-08-14 04:45:57.027 25903 ERROR cinder.volume.manager

 424 if not os.path.isdir(directory):
 425 msg = (_('%s is not a directory.') % directory)
 426 LOG.error(msg)
 427 raise exception.VolumeBackendAPIException(data=msg)

cinder --version
1.3.2