Messages on Console

Michael 1 Reputation point
2021-10-22T17:06:26.693+00:00

I installed CentOS 7 on Hyper-V. This is CLI only, no GUI. Here's my question. It happens quite often that I get a random message output to the console while I'm in the middle of doing something. I get a lot of hv_balloon messages, for example. These can occur at any time and make reading the console very difficult. I think these might be some kind of debug messages, but I'm not sure. If so, is there a way to change the debug level of the console, and what debug level would be appropriate?

Thank you!

System Center Virtual Machine Manager
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  1. AlexZhu-MSFT 5,551 Reputation points Microsoft Vendor
    2021-10-26T07:52:23.607+00:00

    Hi,

    As far as I understood it the hv_ kernel modules are the LIS tools needed for Hyper-V. And hv_balloon is the one needed for dynamic memory.

    We can try to use static memory for the guest OS to see if it helps. In my lab, the CentOS 7.9 is working smoothly without the message metioned above.

    143724-linux-module.png

    143647-hyper-v-gust-os-property.png

    Regards,

    Alex
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