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DPM 2012 backing up Hyper-V 2012 stand alone server, sometimes it causes random VM to end up Paused RRS feed

  • Question

  • I am stressing a hyper-v host at the moment and have noticed a new issue using DPM ti back up the VMs from via host backups. All the VMs are on one host volume, at is a a stand-alone server with just a few internal hard disks. DPM is DPM 2012 SP1 and Hyper-V is the role in Server 2012.

    now that the memory usage on the host has become high I am seeing about once every two weeks a random VM end up in "Paused" some time soon after a DPM backup as been initiated. (At least, I say the host ram is high, which it is, maybe this is a ram in the VM issue). Anyway, I will find that the backups run successfully but with just a note in the event logs, one of the VMs will end up as "Paused" with the following note in Hyper-V Manager: Disk(s) running out of space

    neither the host or the vhds comprising the VM are actually anywhere near being full. If I unpause the VM it resumes running normally. From my experience with DPM I would assume that this is a condition from VSS having some issue with the load on the host server and some timeout of the VSS snapshot or something.

    Since it only occurs randomly I was going to look into destressing the host server but was wondering if there was anything I could log or report to help make the issue either go away with some dpm or windows patches or to have DPM note the problem and report it proactively. I see no event log entries of any consequence in the DPM server (note, I have no SCOM integration turned on as I have no SCPM to integrate tom so that might be why)

    Is there any useful technet article noting this issue to explain in detail what could bring about this erroneous disk space / paused condition.

    Monday, May 6, 2013 3:16 PM

All replies

  • Hi,

    Although you are not using a cluster, please see if this fix will install as it did address issues with free space is miscalculations on a Hyper-v server.  Not sure if it had to be a cluster or not.

    Virtual machine enters a paused state or a CSV volume goes offline when you try to create a backup of the virtual machine on a Windows Server 2012-based failover cluster
    http://support.microsoft.com/kb/2799728

    If that does not fix the issue, or if it will not install because it isn't a cluster, please open a query in windows Hyper-v forum t see if they can help you further.


    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Regards, Mike J. [MSFT] This posting is provided "AS IS" with no warranties, and confers no rights.

    Monday, May 6, 2013 9:53 PM
    Moderator