Uppgrading to proxmox 9 , on 2 servers without problems following the wiki
1. threadripper 2990wx , zfs nvme boot, passthrogh onboard ethernet 1gb to pfsense no problems, lxc works, shared volumes works, backup-restore to pbs4 works
2 threadripper 3990x, zfs nvme boot, pci gpu passthrogh no problems, lxc works, shared volumes works, backup-restore to pbs4 works
1. threadripper 2990wx , zfs nvme boot, passthrogh onboard ethernet 1gb to pfsense no problems, lxc works, shared volumes works, backup-restore to pbs4 works
2 threadripper 3990x, zfs nvme boot, pci gpu passthrogh no problems, lxc works, shared volumes works, backup-restore to pbs4 works