'Initialize instance variables.'

def __init__(self, conf, driverinfo, db):

    self.conf = conf
    self.db = db
    self.ctxt = None
    self.lock = {}
    self.driver_info = driverinfo
    self.storage_info = {'protocol': driverinfo['proto'], 'pool_id': None, 'ldev_range': [], 'controller_ports': [], 'compute_ports': [], 'pair_ports': [], 'wwns': {}, 'portals': {}, 'output_first': True}
    self._stats = {}
