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Upgrade 12.3R8.7 to 15.1R7.9 on MX80 (router crash(fr

  • 1.  Upgrade 12.3R8.7 to 15.1R7.9 on MX80 (router crash(fr

    Posted 10-29-2018 22:39

    Dear,

     

    we have Upgrade two MX80 from 12.3R8.7 to 15.1R7.9 (directly).

    One of them looks fine (but he has lower BGP-Sessions and workload).

     

    The other has now two times crash/freeze. First time as i have wrote "show | compare" at SSH-Connection, the second time, as rancid-service will receive the current configuration in the night.

     

    In both times, the Router will become "freeze". No output in /var/log/messages, or /var/log/chassisd, no dump or something. Only on the Serial-Console i can see the following:

     

    watchdog: scheduling fairness gone. Too much high-priority workload!
    watchdog: scheduling fairness gone for 20 seconds now.
    watchdog: scheduling fairness gone for 40 seconds now.
    watchdog: scheduling fairness gone for 60 seconds now.
    watchdog: scheduling fairness gone for 80 seconds now.
    watchdog: scheduling fairness gone for 100 seconds now.
    watchdog: scheduling fairness gone for 120 seconds now.
    watchdog: scheduling fairness gone for 140 seconds now.
    watchdog: scheduling fairness gone for 160 seconds now.
    watchdog: scheduling fairness gone for 180 seconds now.
    watchdog: scheduling fairness gone for 200 seconds now.

     

    Only a hard-reset (power off/on) will be help.

    Has anyone the same problem, or see it everywhere before?

     

    Greets

    Thomas



  • 2.  RE: Upgrade 12.3R8.7 to 15.1R7.9 on MX80 (router crash(fr

    Posted 10-30-2018 03:05

    Hi , i think problem is in this PR and best option wil be upgrade to 16.1R7-S2 latest service release.