Comment 28 for bug 1387214

It works fine if I move the writable paths under /, and it also works fine after creating another image file (ext4) that gets stored under /userdata, to be consumed by the writable paths (using bind-mounts and everything).

But if I use bind mounts from /userdata/system-data directly, I can easily get it to break. The same setup works fine when using / instead (same bind-mounts and etc, but on a different dir path).

The only peculiarity with /userdata is that it's shared between both containers. Ubuntu uses /userdata/system-data, /userdata/SWAP.img and /userdata/user-data. Android uses /userdata/android-data.