[SOLVED] KVM lssue after proxmox update

[shocker]

Hello,
I have performed today update the the latest proxmox via apt update/upgrade and now I have two linux machines that hang after selecting kernel. There is no error message in syslog nor on the console. After few minutes the VM state is with a yellow question mark (hang).
Any hint what can cause this issue or where to start troubleshooting this?

 

[shocker]

Found the issue, somehow the memory changed for those two machines instead of 24GiB was 24M and it was due to the memory issue