Win10 VM gets stuck rebooting/shutting down when installing win Updates

Dunuin

Distinguished Member
Jun 30, 2020
14,793
4,613
258
Germany
Hi,

Everytime I need to reboot or shutdown my Win10 VMs to install a Windows Update it somehow gets stuck in a running but unresponsive state. CPU graphs then doesn't show any fluctuations with very low utilization, RAM shoots up (but I guess that is just because the QEMU guest agent is shutdown already so RAM usage can't be polled by PVE and PVE falls back to KVM process RAM usage). I then need to hard stop that VM using the webUI "stop" button and start it again, where it boots without a problem installing the update.

So not that a big problem, as the Win inside that VMs seems to be shutdown properly, but I still always have bad feeling hard stopping guests.
Someone knows if that can be fixed somehow?

Win VMs all should be very similar and share the same GPU (I only run one Win VM at the time):

Code:
root@Hypervisor:~# qm config 103
agent: 1
bios: ovmf
boot: order=scsi0;ide2
cores: 6
cpu: host,flags=+pcid;+spec-ctrl;+ssbd;+aes
efidisk0: VMpool_VLT_VM:vm-103-disk-0,size=1M
hostpci0: 0000:03:00,pcie=1,x-vga=1
ide2: none,media=cdrom
machine: pc-q35-6.2
memory: 8192
name: HTPC
net0: virtio=7E:5F:26:8E:55:5D,bridge=vmbr43,firewall=1
net1: virtio=22:07:79:00:3C:82,bridge=vmbr49,firewall=1
numa: 0
ostype: win10
scsi0: VMpool_VLT_VM:vm-103-disk-1,discard=on,iothread=1,size=100G,ssd=1
scsi2: VMpool_VLT_VM:vm-103-disk-2,discard=on,size=2G,ssd=1
scsihw: virtio-scsi-single
smbios1: uuid=daf4ac65-904c-4a1e-ad8f-766a588d0e5d
sockets: 1
vga: none
vmgenid: e10a32a6-72b5-41b9-9334-f2f9af2b6780
 
My Windows 10 VMs suffer from exact same issue - quite shockes to see this long thread over there....
 

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