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Status Is a defect
Workspace IBM i
Categories BRMS
Created by Guest
Created on Mar 1, 2024

RELATED IDEAS

Concurrent BRMS save of the same media would result in false BRM148A

Previous i had raised the issue in IBM-i-3268. Occassionally when there happen to be
multiple BRMS Save job happening BRMS would give a false BRM148A due to volume assignment contention.

Although the idea is delivered, we still have the rare occurence of this issue happening randomly across various partitions at time.

Multiple/Parrallel BRMS save jobs with the same media policy would result in BRM148A [IBMI-I-3268]

Idea priority High
  • Guest
    Reply
    |     Jul 17, 2024

    Hi,

    I had previously open a few cases with regards to BRM148A, With the latest case TS015881626,i was told by the support that BRMS save cannot be run at the same time and such concurrency has to be handled by application.
    So in the event of reported reoccurance , do i open a new case to report the false BRM148A or is there any particular logs or loggins that would be helpful to work on the rca ?

  • Guest
    Reply
    |     Jul 16, 2024
    Thank you for the response, the BRMS team has been unable to reproduce the customer described scenario with concurrent jobs which produces a false BRM148A error. The team has done detailed code reviews of the volume selection algorithm which has not uncovered a false error reporting leg. Unfortunately, without an exact recreate we cannot have confidence in a change to the volume selection process that would address the reported problem area. Therefore this request is being closed and noted as a defect that should be handled as such if it occurs again in the future. Development will work with the support team to try to provide additional improved tracing in the future to identify gaps in the volume selection process that might help identify these random issues.
  • Guest
    Reply
    |     Jul 12, 2024

    Hi Support,

    1)There are more than enough tape drives than the parrallel backup jobs running at any point of time.

    2)There are sufficient media on the partitions as immediate reply to the BRM148A would allow to go thru.

    3)There are no parrallel resources in use for the save.



  • Guest
    Reply
    |     Jul 11, 2024
    The BRMS development team would like to request additional information about this environment to better understand the issues. Given the information that several concurrent parallel jobs may be running across multiple LPARs and this occurs infrequently, does the current environment always have enough tape drives and volumes required to support the maximum possible jobs? How many parallel resources are being requested for the backups and how many LPARs are involved?
  • Guest
    Reply
    |     Mar 26, 2024
    The BRMS team has received the requirement and is evaluating it. The BRMS team will provide a response after evaluation is complete.
  • Guest
    Reply
    |     Mar 20, 2024

    Hi Maria,


    I have a support raised the case thru TS015532477.

    However, the IBM support does not think that this is a bug and recommend to open a idea.



    Myself and our BRMS development team has tried our best to explain the reason why this is happening and confirmed that this is     NOT BRMS BUG but just a rare timing issue. However, it appears that neither you are ready to accept findings from the development team nor you are willing to make any change to your backup process. If you still think BRMS needs some kind of enhancements, I would recommend to raise a request for enhancements (RFE), (now known as IBM ideas) using following URL.


  • Admin
    Carmelita Ruvalcaba Cevallos
    Reply
    |     Mar 19, 2024

    The CAAC has reviewed this IBM Idea and recommends that IBM not implement this request. This is a bug and should be reported to IBM Support.

    Background: The COMMON Americas Advisory Council (CAAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CAAC has a key role in working with IBM i development to help assess the value and impact of individual IBM Ideas on the broader IBM i community and has therefore reviewed your Idea.

    For more information about CAAC, see www.common.org/caac

    Carmelita Ruvalcaba - CAAC Program Manager

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