'delete iscsi lun.'

def delete_lun(self, pool, project, lun):

    svc = ((((('/api/storage/v1/pools/' + pool) + '/projects/') + project) + '/luns/') + lun)
    ret = self.rclient.delete(svc)
    if (ret.status != restclient.Status.NO_CONTENT):
        exception_msg = (_('Error    Deleting    Volume:    %(lun)s    from    Pool:    %(pool)s,    Project:    %(project)s.    Return    code:    %(ret.status)d,    Message:    %(ret.data)s.'), {'lun': lun, 'pool': pool, 'project': project, 'ret.status': ret.status, 'ret.data': ret.data})
        LOG.error(exception_msg)
        if (ret.status == restclient.Status.FORBIDDEN):
            raise exception.VolumeBackendAPIException(data=exception_msg)
