I have an SMB share on a Buffalo NAS (nas01/storage) mounted on /storage. From /etc/fstab:

//nas01/storage /storage cifs file_mode=0644,dir_mode=0750,uid=1000,gid=1000,passwd="XYZ" 0 0

It mounts fine and I've set file_mode and dir_mode to prevent the "all 777" bit that happens by default (apparently) so that's all OK. Files and directories are created 644 adn 750 as desired, as my account (UID 1000). I can create, edit, rename and delete files/dirs but cannot chmod/chown them (as my account nor root).

$ ls -l testfile2
-rw-r--r-- 1 len len 0 Nov 28 21:11 testfile2
$ chmod 755 testfile2 
$ ls -l testfile2 
-rw-r--r-- 1 len len 0 Nov 28 21:11 testfile2

No errors, it just doesn't work.

I'm running Xubuntu 16.04 LTS now, but previously had CentOS 6.8 installed, accessing the same share. I don't seem to recall running into this on CentOS, but I can't say that for sure. I may well have simply have not encountered or noticed it since I didn't run CentOS here for very long.

Am I mounting the SMB share improperly or is there fundamentally something preventing it? What do I need to change?


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