umount: not coherent with fstab

Tony Arnold tony.arnold at
Tue May 22 15:34:56 UTC 2007


Luca Ferrari wrote:
> On Tuesday 22 May 2007 Mitch Contla's cat, walking on the keyboard, wrote:
>> Why dont you type 'mount' and see how the os thinks the file systems are
>> mounted. Maybe this will give you a clue as to why your umount is not
>> working. Are you using umount as root?
> The mount command reports me the filesystem is ok with fstab. If I umount as 
> root it works, then I can re-mount as normal user, but cannot umount as 
> normal user. But the mount point belongs to the user and my fstab contains 
> the users option:
> # /dev/sda12
> UUID=E63F-7400  /mnt/disco2     vfat    
> defaults,utf8,umask=000,users,exec,suid 0       1
> [luca at fluca:~]$ mount | grep disco1
> /dev/sda11 on /mnt/disco1 type vfat (rw,nodev,utf8,umask=000)
> What am I missing?

I always thought you had to be root to umount anything, especially if it
was mounted via fstab. pmount and pumount are used to mount an unmount
removable devices.

Tony Arnold, IT Security Coordinator, University of Manchester,
IT Services Division, Kilburn Building, Oxford Road, Manchester M13 9PL.
T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
E: tony.arnold at, H:

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