'Disable the QoS.'

def disable_vdisk_qos(self, vdisk, qos):

    for (key, value) in qos.items():
        if (key in self.svc_qos_keys.keys()):
            param = self.svc_qos_keys[key]['param']
            value = self.svc_qos_keys[key]['default']
            self.ssh.chvdisk(vdisk, [('-' + param), value])
