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VSS writer failes on Hyper-V host due to VSS snapshot on VM? RRS feed

  • Question

  • Situation:
    2 node fail over Hyper-V 2008r2 cluster, with DPM 2012 agent installed
    HP Lefthand storage cluster (iSCSI), hardware snapshot software installed
    10 VM's
    Separate DPM 2012 Server

    Problem:

    The VSS writer on the Hyper-V nodes enters a failed state;

    * WRITER "Microsoft Hyper-V VSS Writer"
            - Status: 10 (VSS_WS_FAILED_AT_THAW)
            - Writer failure code: 0x800423f2 (VSS_E_WRITERERROR_TIMEOUT)
            - Writer ID: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
            - Writer instance ID: {880a56ac-a37c-440b-9d97-b8b0346c6976}

    I think this might be something to do with the back-ups within the VM's
    At 21.00 a third party backup (Ahsay) is started within the VM (using VSS) on all 10 VM's.

    At 23.00 the DPM back-up is started, however the back-up from 21.00 is still running.

    Can this be the problem?

    When I reboot my hosts to reset the VSS writer, I can take a successful backup manually (not tested at 23.00).

    I provide virtual machines to my customers, they can arrange their own backup (Ahsay), however I want to back-up the VM's just to be sure, any suggestions?

    Monday, August 12, 2013 9:25 AM