*** Test ***
    def test__udev_settle(self, mocked_execute):
        hardware._udev_settle()
        mocked_execute.assert_called_once_with('udevadm', 'settle')

+    def test__check_for_iscsi_f(self,mocked_execute):
+       hardware._check_for_iscsi()
+      mocked_execute.assert_called_with('iscsistart', '-f')



***code***

def _udev_settle():
    """Wait for the udev event queue to settle.

    Wait for the udev event queue to settle to make sure all devices
    are detected once the machine boots up.

    """
    try:
        utils.execute('udevadm', 'settle')
    except processutils.ProcessExecutionError as e:
        LOG.warning('Something went wrong when waiting for udev '
                    'to settle. Error: %s', e)
        return


+def _check_for_iscsi():
+    """iscsi detection
+
+   iscsistart -f will print the iBFT or OF info.
+    In case such connection exists, we would like to issue
+   iscsistart -b to create a session to the target.
+    - if no connection is detected we simply return.
+    """
+    try:
+       utils.execute('iscsistart', '-f')
+    except (processutils.ProcessExecutionError, EnvironmentError) as e:
+        LOG.debug('No iscsi connection detected. Skipping iscsi.'
+                  'Error: %s', e)
+        return
+    try:
+        utils.execute('iscsistart', '-b')
+   except processutils.ProcessExecutionError as e:
+       LOG.warning('Something went wrong executing iscsistart -b'
+                    'Error: %s', e)