After upgrading from Ubuntu v14.04 to v16.04 chown doesn't seem to work any longer on my server. I checked following:
- filesystem is RW
- user exists
- folder is not immutable
- all commands executed as root
and for the heck i tried following (as root):
$ id
uid=0(root) gid=0(root) groups=0(root)
$ apparmor_status
apparmor module is loaded.
0 profiles are loaded.
0 profiles are in enforce mode.
0 profiles are in complain mode.
0 processes have profiles defined.
0 processes are in enforce mode.
0 processes are in complain mode.
0 processes are unconfined but have a profile defined.
$ cd /
$ > test.txt
$ chmod 777 test.txt
$ lsattr test.txt
-------------e-- test.txt
$ ls -l test.txt
-rwxrwxrwx 1 root root 0 Jun 27 19:01 test.txt
$ chown www-data test.txt
chown: changing ownership of 'test.txt': Operation not permitted
Anyone any suggestions?