def unmap_volume_from_host(client, volume, host, mapping):
# Volume is mapped directly to host, so delete the mapping
if mapping.get('mapRef') == host['hostRef']:
LOG.debug(
"Volume %(vol)s is mapped directly to host %(host)s; "
"removing mapping.", {
'vol': volume['id'],
'host': host['label']
})
client.delete_volume_mapping(mapping['lunMappingRef'])
return
try:
host_group = client.get_host_group(mapping['mapRef'])
except exception.NotFound:
# Volumes is mapped but to a different initiator
raise eseries_exc.VolumeNotMapped(volume_id=volume['id'],
host=host['label'])
# If volume is mapped to a foreign host group raise error
if host_group['label'] != utils.MULTI_ATTACH_HOST_GROUP_NAME:
raise eseries_exc.UnsupportedHostGroup(volume_id=volume['id'],
group=host_group['label'])
# If target host is not in the multiattach host group
if host['clusterRef'] != host_group['clusterRef']:
raise eseries_exc.VolumeNotMapped(volume_id=volume['id'],
host=host['label'])
# Volume is mapped to multiattach host group
# Remove mapping if volume should no longer be attached after this
# operation.
if volume['status'] == 'detaching':
LOG.debug(
"Volume %s is mapped directly to multiattach host group but "
"is not currently attached; removing mapping.", volume['id'])
client.delete_volume_mapping(mapping['lunMappingRef'])
def terminate_connection(self, volume, connector, **kwargs):
"""Disallow connection from connector."""
eseries_vol = self._get_volume(volume['name_id'])
initiator = connector['initiator']
host = self._get_host_with_port(initiator)
mappings = eseries_vol.get('listOfMappings', [])
# There can only be one or zero mappings on a volume in E-Series
mapping = mappings[0] if mappings else None
if not mapping:
raise eseries_exc.VolumeNotMapped(volume_id=volume['id'],
host=host['label'])
host_mapper.unmap_volume_from_host(self._client, volume, host, mapping)
def terminate_connection_fc(self, volume, connector, **kwargs):
"""Disallow connection from connector.
Return empty data if other volumes are in the same zone.
The FibreChannel ZoneManager doesn't remove zones
if there isn't an initiator_target_map in the
return of terminate_connection.
:returns: data - the target_wwns and initiator_target_map if the
zone is to be removed, otherwise the same map with
an empty dict for the 'data' key
"""
eseries_vol = self._get_volume(volume['name_id'])
initiators = [
fczm_utils.get_formatted_wwn(wwpn) for wwpn in connector['wwpns']
]
host = self._get_host_with_matching_port(initiators)
mappings = eseries_vol.get('listOfMappings', [])
# There can only be one or zero mappings on a volume in E-Series
mapping = mappings[0] if mappings else None
if not mapping:
raise eseries_exc.VolumeNotMapped(volume_id=volume['id'],
host=host['label'])
host_mapper.unmap_volume_from_host(self._client, volume, host, mapping)
info = {'driver_volume_type': 'fibre_channel', 'data': {}}
if len(self._client.get_volume_mappings_for_host(
host['hostRef'])) == 0:
# No more exports for this host, so tear down zone.
LOG.info(
_LI("Need to remove FC Zone, building initiator "
"target map."))
initiator_info = self._build_initiator_target_map_fc(connector)
target_wwpns, initiator_target_map, num_paths = initiator_info
info['data'] = {
'target_wwn': target_wwpns,
'initiator_target_map': initiator_target_map
}
return info
