docs: def disableEnableDisk(rh, userid, vaddr, option):
      """
      Disable or enable a disk.
  
      Input:
         Request Handle:
            owning userid
            virtual address
            option ('-e': enable, '-d': disable)
  
      Output:
         Dictionary containing the following:
            overallRC - overall return code, 0: success, non-zero: failure
            rc        - rc from the chccwdev command or IUCV transmission.
            rs        - rs from the chccwdev command or IUCV transmission.
            results   - possible error message from the IUCV transmission.
      """
  
      rh.printSysLog("Enter vmUtils.disableEnableDisk, userid: " + userid +
          " addr: " + vaddr + " option: " + option)
  
      results = {
                'overallRC': 0,
                'rc': 0,
                'rs': 0,
                'response': ''
               }
  
      """
      Can't guarantee the success of online/offline disk, need to wait
      Until it's done because we may detach the disk after -d option
      or use the disk after the -e option
      """
      for secs in [0.1, 0.4, 1, 1.5, 3, 7, 15, 32, 30, 30,
                  60, 60, 60, 60, 60]:
          strCmd = "sudo /sbin/chccwdev " + option + " " + vaddr + " 2>&1"
          results = execCmdThruIUCV(rh, userid, strCmd)
          if results['overallRC'] == 0:
              break
          elif (results['overallRC'] == 2 and results['rc'] == 8 and
              results['rs'] == 1 and option == '-d'):
              # Linux does not know about the disk being disabled.
              # Ok, nothing to do.  Treat this as a success.
              results = {'overallRC': 0, 'rc': 0, 'rs': 0, 'response': ''}
              break
          time.sleep(secs)
  
      rh.printSysLog("Exit vmUtils.disableEnableDisk, rc: " +
          str(results['overallRC']))
      return results