Re: Server 14.04 - Missing Folders with Samba
I can't remember for sure, but I think you could have filesystem corruption or a bad disk.
I say this based on the question marks you see when running ls command.
Run smartmontools/smartutil.
You could try creating the files/directories with similar names/characters on an ext4 formatted USB drive to see if the
problem can be reproduced.
Nothing is ever easy, but if it is difficult you must be doing it wrong.