[SOLVED] VM internet problems

Another_Arch_Derivative · 2020-07-04 05:39:35

Solution: Change device model of NIC to VIRTIO and install the appropriate drivers on windows.

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After my win10 guest boots up, within a few minutes my internet connectivity completely bricks on my host and guest. Restarting dhcpcd does not restore connection even though no errors are reported, and i am forced to reboot my host arch system entirely. This may be new behavior after win10 updated a few hours ago but I'm not sure. I think i set something up wrong in my XML but I'm not sure. Anything is appreciated.

Using a standard qemu/vfio/libvirt/kvm setup

Guest xml configuration:

<domain type="kvm">
  <name>win10</name>
  <uuid>c4c9af8f-02ff-4f10-a442-a9d2bd4f6607</uuid>
  <metadata>
    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
      <libosinfo:os id="http://microsoft.com/win/10"/>
    </libosinfo:libosinfo>
  </metadata>
  <memory unit="KiB">16396288</memory>
  <currentMemory unit="KiB">16396288</currentMemory>
  <vcpu placement="static">16</vcpu>
  <os>
    <type arch="x86_64" machine="pc-q35-5.0">hvm</type>
    <bootmenu enable="yes"/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv>
      <relaxed state="on"/>
      <vapic state="on"/>
      <spinlocks state="on" retries="8191"/>
      <vendor_id state="on" value="Cheems"/>
    </hyperv>
    <kvm>
      <hidden state="on"/>
    </kvm>
    <vmport state="off"/>
  </features>
  <cpu mode="host-model" check="partial">
    <topology sockets="1" dies="1" cores="8" threads="2"/>
  </cpu>
  <clock offset="localtime">
    <timer name="rtc" tickpolicy="catchup"/>
    <timer name="pit" tickpolicy="delay"/>
    <timer name="hpet" present="no"/>
    <timer name="hypervclock" present="yes"/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <pm>
    <suspend-to-mem enabled="no"/>
    <suspend-to-disk enabled="no"/>
  </pm>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type="file" device="cdrom">
      <driver name="qemu" type="raw"/>
      <source file="/home/chappi/Images/Win10_2004_English_x64.iso"/>
      <target dev="sdb" bus="sata"/>
      <readonly/>
      <boot order="2"/>
      <address type="drive" controller="0" bus="0" target="0" unit="1"/>
    </disk>
    <disk type="file" device="cdrom">
      <driver name="qemu" type="raw"/>
      <source file="/home/chappi/Images/virtio-win-0.1.171.iso"/>
      <target dev="sdd" bus="sata"/>
      <readonly/>
      <boot order="3"/>
      <address type="drive" controller="0" bus="0" target="0" unit="3"/>
    </disk>
    <disk type="block" device="disk">
      <driver name="qemu" type="raw" cache="none" io="native"/>
      <source dev="/dev/nvme1n1"/>
      <target dev="vda" bus="virtio"/>
      <boot order="1"/>
      <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
    </disk>
    <controller type="usb" index="0" model="qemu-xhci" ports="15">
      <address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
    </controller>
    <controller type="scsi" index="0" model="virtio-scsi">
      <address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
    </controller>
    <controller type="sata" index="0">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x1f" function="0x2"/>
    </controller>
    <controller type="pci" index="0" model="pcie-root"/>
    <controller type="pci" index="1" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="1" port="0x10"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
    </controller>
    <controller type="pci" index="2" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="2" port="0x11"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x1"/>
    </controller>
    <controller type="pci" index="3" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="3" port="0x12"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x2"/>
    </controller>
    <controller type="pci" index="4" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="4" port="0x13"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x3"/>
    </controller>
    <controller type="pci" index="5" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="5" port="0x14"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x4"/>
    </controller>
    <controller type="pci" index="6" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="6" port="0x15"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x5"/>
    </controller>
    <controller type="pci" index="7" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="7" port="0x16"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x6"/>
    </controller>
    <controller type="pci" index="8" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="8" port="0x17"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x7"/>
    </controller>
    <controller type="pci" index="9" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="9" port="0x18"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x0" multifunction="on"/>
    </controller>
    <controller type="pci" index="10" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="10" port="0x19"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x1"/>
    </controller>
    <controller type="virtio-serial" index="0">
      <address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/>
    </controller>
    <interface type="direct">
      <mac address="52:54:00:2d:12:10"/>
      <source dev="enp6s0" mode="bridge"/>
      <model type="e1000e"/>
      <address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
    </interface>
    <serial type="pty">
      <target type="isa-serial" port="0">
        <model name="isa-serial"/>
      </target>
    </serial>
    <console type="pty">
      <target type="serial" port="0"/>
    </console>
    <channel type="spicevmc">
      <target type="virtio" name="com.redhat.spice.0"/>
      <address type="virtio-serial" controller="0" bus="0" port="1"/>
    </channel>
    <input type="mouse" bus="ps2"/>
    <input type="keyboard" bus="ps2"/>
    <input type="keyboard" bus="usb">
      <address type="usb" bus="0" port="1"/>
    </input>
    <input type="mouse" bus="usb">
      <address type="usb" bus="0" port="2"/>
    </input>
    <graphics type="spice" autoport="yes">
      <listen type="address"/>
      <image compression="off"/>
      <gl enable="no" rendernode="/dev/dri/by-path/pci-0000:05:00.0-render"/>
    </graphics>
    <sound model="ich9">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x1b" function="0x0"/>
    </sound>
    <video>
      <model type="qxl" ram="65536" vram="65536" vgamem="16384" heads="1" primary="yes"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"/>
    </video>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0b" slot="0x00" function="0x0"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x07" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0b" slot="0x00" function="0x1"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x08" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0b" slot="0x00" function="0x2"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x09" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0b" slot="0x00" function="0x3"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x0a" slot="0x00" function="0x0"/>
    </hostdev>
    <memballoon model="virtio">
      <address type="pci" domain="0x0000" bus="0x06" slot="0x00" function="0x0"/>
    </memballoon>
  </devices>
</domain>

and IP link information:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
    link/ether d4:5d:64:a7:3c:b5 brd ff:ff:ff:ff:ff:ff
3: enp7s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether d4:5d:64:a7:3c:b4 brd ff:ff:ff:ff:ff:ff

Thank you in advance.

EDIT: added some clarification.
EDIT 2: After further testing, the Microsoft store had nothing to do with it. Connectivity just went down at around the same time. Am dumb.

Last edited by Another_Arch_Derivative (2020-07-04 06:53:43)

jasonwryan · 2020-07-04 05:44:50

1. Use code tags when pasting to the boards: https://wiki.archlinux.org/index.php/Co … s_and_code

2. How is this anything other than a Windows issue?

Another_Arch_Derivative · 2020-07-04 05:46:46

Sorry about formatting, and i posted it here because its a qemu issue on an arch host

jasonwryan · 2020-07-04 06:24:04

Yes, but the error/bug is triggered from the Windows machine visiting a MS site. Can you reproduce from Arch? If not, its a Windows problem, not ours.

Another_Arch_Derivative · 2020-07-04 06:28:45

It wasn't actually the Microsoft store, I was wrong.

Arch Linux

#1 2020-07-04 05:39:35

[SOLVED] VM internet problems

#2 2020-07-04 05:44:50

Re: [SOLVED] VM internet problems

#3 2020-07-04 05:46:46

Re: [SOLVED] VM internet problems

#4 2020-07-04 06:24:04

Re: [SOLVED] VM internet problems

#5 2020-07-04 06:28:45

Re: [SOLVED] VM internet problems

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