AFP woes
Today I noticed that I can't copy folders full of files from my mac to the USB SSD attached to my PI. I was trying to clear some space on my dropbox to get rid of the increasingly frequent, you are running our of space, emails. The only wany I managed to do it is with rsync, which is somewhat more hassle for me than drag & drop.
Turns out the fix was to create a new user on the pi with the same credentials as my mac accout. Mount the drive as that user. Needed to add the user to the /etc/netatalk/afp.conf file.
Pi AFP Server
Just set up the pi as an AFP server using How to Setup a Raspberry Pi AFP Server - Pi My Life Up pretty straightforward. I didn't manage to mount my home folder but can get to /var/www/html which might be useful. Quite please with myself. I wonder if I could have a pi with a big SSD on it. Seems you can set the pi up as a Time Machine.