qemu guest agent vss provider stopped (after backup?)

[trigg3r]

In Proxmox 8.3 I created two VMs with Windows Server 2019 enabling "QEMU guest agent" in Options. In the VMs I installed QEMU guest agent (108.0.2) and set the related services to start automatically at boot.

Every morning in these two VMs I find the "QEMU Guest Agent VSS Provider" service stopped. If I restart it, the service starts without problems.

I think the problem is related to the Proxmox Snapshot Backup that I automatically perform every evening (successfully), but I don't know how to solve it.

Can anyone help me?

 

[dakralex]

Hi!

Have you also installed the related virtio-win drivers (e.g. the serial driver)?

 

[trigg3r]

Thaks for your answer @dakralex

Following Windows Guest Best Practices 2019:

• installing Windows I install the driver for disk (vioscsi\2k19\amd64), network (NetKVM\2k19\amd64) and balloon (Balloon\2k19\amd64)
• after installing Windows I installed Qemu Guest Agent (guest-agent\qemu-ga-x86_64.msi)
  • then I set the QEMU Guest Agent and QEMU Guest Agent VSS Provider services to start automatically on boot

Windows Device Manager does not show any "red cross" or "or yellow exclamation mark", so it seems that no other drivers are needed (right?)