pmxcfs segfault at reboot after proxmox 6.x upgrade

[jimmyjoe]

I've upgraded a remote proxmox host from 5.4 to 6.x using the instructions here and ran into a problem after issuing a reboot at the (remote KVM Blackbox) console. It looks like pmxcfs crashed during reboot. The machine has been sitting here for nearly 30 minutes. Any way to unstick it?

 

[jimmyjoe]

In case it helps anyone else.. I managed to get this thing rebooted via "Magic SysRq". Had to add +Alt+PrintScreen+b to an entry in the Blackbox Keyboard Control dialog and touched it off. worked great.