Midnight Commander moves files enormously long I have an QNAP TS-210 NAS and it seems, that there's a Debian Linux on board. I've installed Midnight Commander there and have been using it successfully for years. Today I spotted something weird. I have to move a large collection of movies (around 130 GB) from one folder to anther. Movies are split into many subfolders. Whenever I enter any particular folder, select all files in MC and press F6 to move them to destination, everything is fine. But, when I attempt to move entire subfolder (destination has it as well, but files inside are different, so there is not overwrite in any case), process takes very, very long. It actually looks like my NAS would be doing a copy, instead of move of this file. Is this normal condition? When I'm doing the same operation on Windows, move process always is very, very fast, no matter, if I'm moving entire folder or only its contents.

`mv` works in two ways. `mc` moves behave the same way.

* If the files are on the same logical device (partition or disk), only the directory entries are moved. This can be extremely fast.
* If the files are on different logical devices, the files are copied and the old file deleted after the copy is done. This is relatively slow as the file must be read, and then written.



If your NAS has multiple disks, then moves may result in data moving between devices. You can check which directories are mounted (and their space utilization) with the `df` command.