I'm not sure you understand how permissions on mountpoints work and how they can change depending on whether and what is mounted on them.
With nothing mounted it's just a directory on the root file system*. If you change it's owner, group, and permissions you're changing the permissions of that directory.
With something mounted on it what you're seeing are the owner, group, and permissions of the top level (root) directory of the mounted filesystem.
So: when you "changed the perms on the mount point to allow all to read/write/execute" did you do so with or without the partition mounted?
And, speaking entirely personally, when I want the overlay and some additional writable space I put the writable space on a different physical device. With writable storage on the SD cards you'll still (eventually) hit the write limit and still have potential data/filesystem corruption issues.
*: In this case anyway. There's nothing stopping you from nesting mounts.
With nothing mounted it's just a directory on the root file system*. If you change it's owner, group, and permissions you're changing the permissions of that directory.
With something mounted on it what you're seeing are the owner, group, and permissions of the top level (root) directory of the mounted filesystem.
So: when you "changed the perms on the mount point to allow all to read/write/execute" did you do so with or without the partition mounted?
And, speaking entirely personally, when I want the overlay and some additional writable space I put the writable space on a different physical device. With writable storage on the SD cards you'll still (eventually) hit the write limit and still have potential data/filesystem corruption issues.
*: In this case anyway. There's nothing stopping you from nesting mounts.
Statistics: Posted by thagrol — Thu Aug 28, 2025 2:44 pm