Thanx, I've found it earlier but author shows only final network config but doesn't show how to set it up.
But I've spend about 2 hours to set it and I've got it.
I've got one note about creating mirror with ovs-vsctl , command from that site doesn't work and needs to add "add-port vmbrX tapXiY" . Maybe author had tap interface added to bridge before creating mirror, I had not.
So I've got 2 questions more:
1) Will Proxmox do own instruction for setting up monitor port for vms?
2) What's the difference between "allow-ovs vmbr0" and "auto vmbr0" - when I configure ovs bridge by GUI, I've got still auto vmbr0, on that ovs tutorial is allow-ovs used. Should I change it manually or some function in gui can do that?