Resolving strange FTP-related issues on your QNAP
Not being able to delete or rename a file on QNAP via FTP? First thing you have to check, is:
- who is the file owner (it should be your user name) and
- what is file group (it should be
On various occasions QNAP can set it to
admin:administ, which is wrong, in this case.
The same problem will most likely appear, if you access your QNAP via FTP and try to rename or delete a file while using different credentials that were used when uploading that file. If another FTP user uploads a file then only that user can delete or rename or move that file.
If you wish to do this yourself, you have two options:
- use that other user’s credentials (if possible) or
- change owner and a group of that file to you.
The second solution is discussed in this article.
If you’re experiencing following symptoms:
- You can list contents of directory, but any attempt to copy file, both ways, ends up with
502 Command not implementedor similar error.
- You can copy file, but attempt to change file’s date and time endes up with
501 001.jpg: Operation not permittedor similar error.
- Anything other, strange, FTP-transfer or file releated.
Then login to your QNAP via SSH,
cd to problematic directory and type
ls -ls. If at any position you see
admin:administ (or another, not your user) this might be possible cause of the problems.
In this case, use:
chown username:everyone filenamefor particular file,
chown username:everyone *for all files in current directory,
chown -R username:everyone *for all files in current directory and all its subdirectories (might be slow!).
This will “reset” selected files and folders to correct ownership and many of your FTP-related problems should be gone after that.