Windows VMGuest changing network cause the guest to crash

ashinobi

Hi, Everyone.

Good day to everyone, hoping you can help me with my problem.

Problem: I have Win10 installed as a VMGuest, using PV driver 8.2.2.200.rc1. Whenever I change the network in Xen Orchestra (for example from Lab network 3 to lab network 4). The VMGuest crashes, it the VMGuest does not respond to any input. If I access the Statistics tab the VMGuest is on high CPU:

I cannot restart the VMGuest, either using Xen Orchestra or using executing xe vm-reboot.

The error message if I execute a restart in Xen Orchestra is

VM_FAILED_SHUTDOWN_ACKNOWLEDGMENT(OpaqueRef:9e760171-06d1-481c-9660-0ae657631392)

The error message if I execute "xe vm-reboot"

[05:23 home-hypervisor ~]# xe vm-reboot uuid=505fc65d-a9d3-b6de-26bf-87bb7d796e6a
VM didn't acknowledge the need to shutdown.
vm: 505fc65d-a9d3-b6de-26bf-87bb7d796e6a (Lab_Win10_Clnt1)

Using Xen Orchestra, commit 3baa3

I need to know why this is crashing if I try to change the network and how do I restart the VMGuest

olivierlambert

Short term solution to reboot the crashed guest: force reboot.

You might want to try with Citrix PV drivers, to see if you have the same issue (don't forget to clean XCP-ng drivers properly before). We have a new version of the XCP-ng driver coming in the next months, that would be interesting to compare

ashinobi

@olivierlambert

You are right, the issue does not exist when using Citrix drivers. It only happens when using the PV driver.

olivierlambert

Okay so as a workaround, rely on Citrix drivers until we got a new XCP-ng version of the PV drivers

planedrop

I've had something similar in the past and if I recall correctly I had to go into the guest and disable it's network adapter, then make the change on the host, then re-enable the network adapter in the guest VM.

Might be worth a shot to see if that solves it.

I believe with the Citrix drivers though it doesn't happen.