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Performance counters do not report any value even if there is activity is going on virtual hard disk inside guest vm RRS feed

  • Question

  • Problem: There is Virtual machine with 3 virtual hard disks. Goal is to get the performance data for the VHD's associated with the virtual machine. 

    I am currently using below counters to track the VHD performance. 

    $Counters = @(
                '\Hyper-V Virtual Storage Device(*)\Write Bytes/sec',
                '\Hyper-V Virtual Storage Device(*)\Read Bytes/sec',
                '\Hyper-V Virtual Storage Device(*)\Read Operations/sec',
                '\Hyper-V Virtual Storage Device(*)\Write Operations/sec',
                '\Hyper-V Virtual Storage Device(*)\Latency',
                '\Hyper-V Virtual Storage Device(*)\Throughput',
                '\Hyper-V Virtual Storage Device(*)\Queue Length'
                )

    interesting part is even if there is good amount disk activity going on inside Guest VM counters are not reported for 2 out of 3 VHD's. 

    Details about Guest VM and Hyper-V host:

    OS : Windows Server 2008 R2

    VHD 1 -> IDE controller based

    VHD 2 and VHD 3 -> SCSI controller.

    performance counter is not getting reported for SCSI based VHD's. Integration services are installed for the virtual machine. 

    Hyper-V host version : Microsoft Windows Server 2019 Datacenter

    Friday, May 1, 2020 7:02 PM