Re: only root can unmount
On Sun, 30 Nov 2008 23:11:29 +0100, Sven Joachim wrote:
>>> The only thing that sticks out is that you have /dev/dvd in fstab but
>>> mount talks about /dev/scd2. Try replacing /dev/dvd with /dev/scd2 in
>>> fstab.
>>
>> Ah, it works now. Thanks a lot Andrei. That's the solution.
>
> Hm, I still do not quite understand why this solves the problem. Because
> I have this in /etc/fstab:
>
> /dev/cdrom /media/cdrom iso9660 ro,user,noauto 0 0
>
> and I can umount discs that I mounted as user just fine.
Ahhhh! Thanks a lot for the comment Sven. I find the real reason:
tong@helios:~$ grep dvd /etc/fstab
/dev/dvd /media/dvd auto users,noauto,exec,ro 0 0
/dev/dvd /mnt/dvd auto user,noauto,exec,ro 0 0
tong@helios:~$ mount /media/dvd
tong@helios:~$ umount /media/dvd && echo ok
ok
tong@helios:~$ mount /mnt/dvd
tong@helios:~$ umount /mnt/dvd
umount: only root can unmount /dev/dvd from /mnt/dvd
I.e., the trick is not actually the name-du-jour of the DVD drive, but
the mount point -- under /mnt, no; under /media yes.
--
Tong (remove underscore(s) to reply)
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