Comment 4 for bug 1475417

We used to follow symlinks, but stopped doing so when we ran into problems when people used them to create cycles (e.g. "ln -s .. foo") that caused the scanner to go into a loop. Ignoring all symlinks avoided this problem but is a problem for your use case.

It will index your media if you use a bind mount instead (which doesn't have the looping problems), but it might be a bit difficult to get that to survive reboots on the phone.