Arch Linux adding Samba

The need to access BTRFS through Samba is one of basic need. It is dead simple: pacman -S samba. Then just copy example configuration:
cp /etc/samba/smb.conf.default /etc/samba/smb.conf
Documentation suggests to add the following to [homes] section: valid users = %S. however it is not necessary (maybe it is a hack for old Windows?).
As final step enable samba service: systemctl enable smbd

 So far so good. The Arch Linux footprint so far (all posts to date) is less than 60MB of RAM. And we have fully blown system.

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