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Thread: KVM - Windows server VM freezing large data transfers

  1. #1
    Join Date
    May 2020
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    1

    KVM - Windows server VM freezing large data transfers

    Hi I am running Ha servers Utilizing KVM/DRBD on server 18.04.4 LTS and I have a VM running windows server 2019 and It appears to Freeze randomly when copying large amounts of data the network connection will go down and I will have to force to VM to shut down and re-start. Runs fine otherwise Any ideas. ?

  2. #2
    Join Date
    May 2007
    Location
    NY's first capital
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    2,814
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: KVM - Windows server VM freezing large data transfers

    Which driver are you using for NIC?

  3. #3
    Join Date
    Mar 2010
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    Squidbilly-Land
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    19,892
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: KVM - Windows server VM freezing large data transfers

    Some info about the HW, VM settings and network architecture would be helpful. For example, are there multiple subnets connected to the VM so DRBD traffic doesn't saturate a nic? Have you reduced the packet sizes and net buffers?

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