Job DDB Verification of one of the media agents takes a very long time.

Last post 01-14-2021, 6:32 AM by dummyguy. 3 replies.
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  • Job DDB Verification of one of the media agents takes a very long time.
    Posted: 11-28-2020, 5:23 AM

    In my infrastructure, I have two Commvault servers:
    simpana - CommServe+MediaAgent
    simpana-ma01 - MediaAgent
    Commvault is used to backup various applications(VMware, SAP HANA, PostgreSQL, MaxDB and more)
    Yesterday I noticed that backup jobs on simpana-ma01 are running very slowly. The average throughput of one job did not exceed 18 GB/hr. While searching for the cause, I discovered that the simpana-ma01 server has very low performance. The server responds to commands for a very long time. At the same time, the load on the processor and RAM did not rise to critical values. There was a feeling that there are problems at the level of the disk subsystem.
    Next, I noticed in the Commvault job manager a running job DDB Verification for simpana-ma01. It was the middle of the day, and the task starts on schedule at 03:00AM. At that time, it took more than 12 hours to complete.I thought it might have something to do with it and canceled this job. After the task was canceled, the simpana-ma01 server immediately came to life.The throughput of the backup jobs immediately returned to normal values.
    Now I can say with absolute certainty that performance problems are directly related to the DDB Verification task, since the problem recurred today. The job started at 03:00AM is still running. The process is very slow. I am seeing performance issues on the simpana-ma01 server.
    What can I check to solve this problem? Any help would be welcome.
    A week ago we updated to version 11.20.22. Probably, problems appeared after installing these updates, I did not notice performance problems before.
    On the simpana server, DDB Verification is performed in 3-5 hours.
    GDP01 on DiskLibMA01=simpana-ma01

  • Re: Job DDB Verification of one of the media agents takes a very long time.
    Posted: 01-11-2021, 6:58 AM

    The problem was in the antivirus settings. After adding Commvault services to trusted services, the problem went away.

  • Re: Job DDB Verification of one of the media agents takes a very long time.
    Posted: 01-12-2021, 4:40 PM

    Can you elaborate on the antivirus settings you changed?  Which product?  Something that would help others look into their av?

  • Re: Job DDB Verification of one of the media agents takes a very long time.
    Posted: 01-14-2021, 6:32 AM

    We are using Kaspersky Security 10. Added all Commvault services to the list of trusted processes.

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