@vickybonick - Thank you for this wonderfull tool, which I have just discovered.
I have an Sony XZ1c with Android Pie (9.0) (stock firmware), and Magisk Root 20.1.
I have 1 major wish for this tool.
I would like to successfull folder mount/bind folder between internal storage and external SD card. Specifically for WhatsApp media folder, which is filling up very quickly.
So far the tool can successfully bind mount internal storage to external SD.
1) WhatsApp can view/read older downloaded material, ie. pictures and videos. This is very good. So the read from the external SD is working perfect.
2) WhatsApp can write to ext. SD when sending material. This is good.
3) WhatsApp cannot write recieve media files anymore, and have stopped downloading any new material. This is not good, which prevents me from using the program to recieve media.
Any idea how to progress from here and solve item 3. Specially because item 1 and 2 works great??
These are my bind mounts.
I would be very gratefull to any help, as this is my main reason to root my phone.
So I am devastated it does not work.
I have added output from /proc/mount on the following page.