Hi, we have a big problem with our Proxmox cluster. The cluster consists of 25 nodes with 10-50 servers each (LXC & KVM). It happens 20-30 times a day that KVM servers freeze. The console is then not reachable and the server itself is also not. When we stop the server, Proxmox displays "stopped". If we restart it, we get the error message: ps -ef | grep VMID still shows the VM process, which cannot be stopped with kill -9. Nodes are up2date with deb http://download.proxmox.com/debian/pve stretch pve-no-subscription repo.