LeftHand Fix terminate_connection when failed over
Terminate connection will fail when a detach is called on a failed
over volume. This patch allows terminate_connection to succeed in
order to allow reattachments to secondary arrays.
Change-Id: I9057f1c5d6e5716a6283c3b08ddad7bfe4904234
Closes-Bug: #1580693
(cherry picked from commit 6ab5e5234b
)
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@ -617,6 +617,28 @@ class TestHPELeftHandISCSIDriver(HPELeftHandBaseDriver, test.TestCase):
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self.volume,
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self.connector)
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def test_terminate_connection_from_primary_when_failed_over(self):
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# setup drive with default configuration
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# and return the mock HTTP LeftHand client
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mock_client = self.setup_driver()
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mock_client.getServerByName.side_effect = hpeexceptions.HTTPNotFound(
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"The host does not exist.")
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with mock.patch.object(hpe_lefthand_iscsi.HPELeftHandISCSIDriver,
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'_create_client') as mock_do_setup:
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mock_do_setup.return_value = mock_client
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self.driver._active_backend_id = 'some_id'
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# execute terminate_connection
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self.driver.terminate_connection(self.volume, self.connector)
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# When the volume is still attached to the primary array after a
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# fail-over, there should be no call to delete the server.
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# We can assert this method is not called to make sure
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# the proper exceptions are being raised.
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self.assertEqual(0, mock_client.removeServerAccess.call_count)
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def test_terminate_connection_multiple_volumes_on_server(self):
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# setup drive with default configuration
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@ -152,9 +152,10 @@ class HPELeftHandISCSIDriver(driver.ISCSIDriver):
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2.0.6 - Update replication to version 2.1
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2.0.7 - Fixed bug #1554746, Create clone volume with new size.
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2.0.8 - Add defaults for creating a replication client, bug #1556331
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2.0.9 - Fix terminate connection on failover
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"""
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VERSION = "2.0.8"
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VERSION = "2.0.9"
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device_stats = {}
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@ -744,6 +745,22 @@ class HPELeftHandISCSIDriver(driver.ISCSIDriver):
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if removeServer:
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client.deleteServer(server_info['id'])
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except hpeexceptions.HTTPNotFound as ex:
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# If a host is failed-over, we want to allow the detach to
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# to 'succeed' when it cannot find the host. We can simply
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# return out of the terminate connection in order for things
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# to be updated correctly.
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if self._active_backend_id:
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LOG.warning(_LW("Because the host is currently in a "
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"failed-over state, the volume will not "
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"be properly detached from the primary "
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"array. The detach will be considered a "
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"success as far as Cinder is concerned. "
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"The volume can now be attached to the "
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"secondary target."))
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return
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else:
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raise exception.VolumeBackendAPIException(ex)
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except Exception as ex:
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raise exception.VolumeBackendAPIException(ex)
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finally:
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