I'm not rebooting my router
But you know, sometimes electricity may be down or such things.. Yes, I know it should be rare, still I would like to avoid reconfiguration of Kodi after that.
I can define shares if I will disable "anonymous sharing" check box and I don't have any problems with that. But again, when I define a share I'm asked to select a volume and to select a folder on it. "To select volume" means to select between sda1 and sdb1, as they are connected now. If, from some reason (e.g. reboot) volume will get a different block device names then this share will cease to work.
Never mind, I guess I will have to suffer it. Or, maybe, I will buy a normal NAS device, will disassemble my USB drives (those are WD external USB drives) and will put them into that NAS..