> Hi, > after issuing command: > # qm set 100 -serial0 /dev/ttyS0 > > I have noticed that in /etc/pve/qemu-server/100.conf new line has > appeared: 'serial0: /dev/ttyS0' > > Wouldn't it be enough just to add such a line in config file of VM to add serial > ports? Yes, that is exactly what above command does.