root not permitted to chown for user owned directory
I have been using Fedora since Redhat 7 was taken out of market. As a root I have always been able to do everything with files, whether user owned or root owned. Now I am preparing to use backup-manager and it wants to chown from the user to the root. I run backup-manager as root. It is not allowed to. So I rand it manually and got the same output. The output I get is:
root / data backup chown root:root backup-manager
chown: changing ownership of 'backup-manager': Operation not permitted
Because I had used sudo -i to get into root, I also logged in directly as root on a virtual terminal (Ctrl-F3 or such) with the same result.
EDIT: the partition that the directory is part is mounted with NFS4 from a server. The server is my own as well. Would it be NFS that is preventing the change?
EDIT2: I am running an updated Fedora 27.
Why would root not be able to change a directory owner?
Kind regards, Guus Bonnema.
