I have a folder which I sync between my desktop - sysihpus and my android phone bq aqauris.
The folder is send only on desktop an receive only on phone. The folder is around 38GB. Since I don’t have enough space on the internal memory on phone, I sync it to SD card.
Nearly every time it synces it, there are errors with overrides.
The phone uses sdcardfs, for test I have enabled ignore permission on fat file system. I don’t now I should handle them completly new synces doesn’t resovle this.
I add some pics.
Your phone filesystem screws something up (permissions, mtime) as it receives the files which causes them to look different. See whats different by using stat command line util.