On Sat, 2017-11-18 at 10:47 -0700, Robin Laing wrote:
> That is why I tried to use the copy paste feature of the File Manager as 
> a test.  Instant indication that the file had transferred.    As soon as 
> I could start the copy and paste, I did an ls -l on the stick and 
> according to that, the full file had been transferred but things were stuck.
> 
> That indicator on the panel when I looked showed 100% as well.  I wanted 
> to see what the indicator showed.

The panel indicator merely shows that the user-level process has finished pushing the bits out to the system. I doesn't know anything about how long the system will take to flush the buffers onto the physical medium (in fact you can see the same effect when copying to an NFS-mounted drive). If it's genuinely stuck that's another issue, but even in the best case you can't reply on the app-level indication to tell you the copy has finished. That's basically why there's an Eject button.

poc