'Delete volume on ETERNUS.'

def delete_volume(self, volume):

    LOG.debug('delete_volume,    volume    id:    %s.', volume['id'])
    self.conn = self._get_eternus_connection()
    vol_exist = self._delete_volume_setting(volume)
    if (not vol_exist):
        LOG.debug('delete_volume,    volume    not    found    in    1st    check.')
        return False
    vol_instance = self._find_lun(volume)
    if (vol_instance is None):
        LOG.debug('delete_volume,    volume    not    found    in    2nd    check,    but    no    problem.')
        return True
    self._delete_volume(vol_instance)
    return True
