pve 7 to 8

A while back I did my first PVE install on a mini PC with four Intel i226V Ethernet ports. They weren't supported by the current PVE kernel but somehow I managed to put in a custom kernel. Today I tried to update from PVE 7 to 8. The default kernel wouldn't update and then the system would hang...

I run a 3-node PVE with CEPH. I migrated all VMs away from node 3, upgraded to the latest CEPH (Quincy) and then started the PVE 7 to 8 upgrade on node 3. After rebooting node 3 (now PVE 8), everything seemed to work well. So I migrated two VMs, one each from node 1 (still on PVE 7) and node 2...