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Article State

Approved

Article Number

KB-20180122104633

Product

Disk Library for mainframe DLm2100,Disk Library for mainframe DLm8100, VTE Virtuent
Summary

DLm System clock drifting out of sync with hwclock and system time, that issue can influence tape operations like mount and scratch.


Language

EN

DE

Issue

Virtuent tape processing  error/failure for mount and scratch. That can happen if system time / clock is out of sync!



Cause

Check and resync time

Solution

Check system time and hwclock sync with:

  1. Enter that commands in Linux to check the time

    vte1:~> hwclock --show ; date
    Mon Jan 22 11:09:49 2018  -0.391115 seconds
    Mon Jan 22 11:09:49 CET 2018
    
    <OR> 
    
    vte1:~> hwclock -D
    hwclock from util-linux 2.19.1
    Using /dev interface to clock.
    Last drift adjustment done at 1513933315 seconds after 1969
    Last calibration done at 1458825751 seconds after 1969
    Hardware clock is on UTC time
    Assuming hardware clock is kept in UTC time.
    Waiting for clock tick...
    ...got clock tick
    Time read from Hardware Clock: 2018/01/22 10:11:40
    Hw clock time : 2018/01/22 10:11:40 = 1516615900 seconds since 1969
    Mon Jan 22 11:11:40 2018  -0.188061 seconds
    dlm:~>
    
    
    
  2. Check the current and set currect time of operating system
    1. vte1:~> date
      Mon May  7 08:29:47 EDT 2018
      vte1:~>
      
      //If the current date is not correct, use the following Linux command and format to correct the date:
      vte1:~> date MMDDhhmmCCYY  // date 050714322018
      
      //we suggest to follow with "hwclock -w | --systohc" 
      //Check - recognize the "time zone" too!
  3. Enter that commands in Linux to resync the time

    1. Open an SR (Service Request)  https://service.mainstorconcept.com
      and post the result. 
    2. Or set the hwclock to sync with system time.

      //would you sync your hwclock from sytem time - use the follow command!
      hwclock -w       set the hardware clock from the current system time
      
      <or>
      
      //would you sync your system time from hwclock - use the follow command!
      
      hwclock -s      set the system time from the hardware clock
      
      

Workaround

Notes

Check NTP configuration




Attachments


Change

20180507142799, Update "Set Time"


https://www.mainstorconcept.com

https://service.mainstorconcept.com