Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/hammock/wrappers/wrapper.py", line 81, in call
    resp = self._wrapper(req)
  File "/usr/lib/python2.7/site-packages/hammock/wrappers/_route.py", line 111, in _wrapper
    result = self(**kwargs)
  File "/usr/lib/python2.7/site-packages/hammock/wrappers/wrapper.py", line 57, in __call__
    return self.func(self._resource, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/volume_connector/resources/api/internal/v1/connector.py", line 61, in disconnect_volume
    use_multipath, device_scan_attempts, arch, force, ignore_errors)
  File "/usr/lib/python2.7/site-packages/volume_connector/exceptions.py", line 69, in wrapper
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/volume_connector/managers/connector.py", line 48, in disconnect_volume
    force=force, ignore_errors=ignore_errors)
  File "/usr/lib/python2.7/site-packages/os_brick/utils.py", line 150, in trace_logging_wrapper
    result = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 274, in inner
    return f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/os_brick/initiator/connectors/iscsi.py", line 848, in disconnect_volume
    ignore_errors=ignore_errors)
  File "/usr/lib/python2.7/site-packages/os_brick/initiator/connectors/iscsi.py", line 885, in _cleanup_connection
    force, exc)
  File "/usr/lib/python2.7/site-packages/os_brick/initiator/linuxscsi.py", line 232, in remove_connection
    self._remove_scsi_symlinks(devices_names)
  File "/usr/lib/python2.7/site-packages/os_brick/initiator/linuxscsi.py", line 250, in _remove_scsi_symlinks
    priv_rootwrap.unlink_root(no_errors=True, *unlink)
  File "/usr/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line 206, in _wrap
    self.start()
  File "/usr/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line 217, in start
    channel = daemon.RootwrapClientChannel(context=self)
  File "/usr/lib/python2.7/site-packages/oslo_privsep/daemon.py", line 322, in __init__
    proc = subprocess.Popen(cmd, shell=False, stderr=_fd_logger())
  File "/usr/lib/python2.7/site-packages/eventlet/green/subprocess.py", line 55, in __init__
    subprocess_orig.Popen.__init__(self, args, 0, *argss, **kwds)
  File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory