On Tue, Jul 15, 2014 at 11:02:04AM +0200, Benno Schulenberg wrote:
>
> On Tue, Jul 15, 2014, at 10:02, Karel Zak wrote:
> > umount -t <type>
> >
> > the <type> is filesystem type (so you can force umount to use for
> > example /sbin/umount.<type>).
>
> Hmm. But it's not working for me, the --types option does not limit
> umount in any way. In the man page it says: "Indicate that the
> actions should *only* be taken on filesystems of the specified type."
>
> But, for example, here Suse is of type ext4 and gets mounted:
>
> # ./mount -t ext4 /suse
> # ./mount | grep suse
> /dev/sda2 on /suse type ext4 (rw,noatime,noexec,nosuid,nodev,user)
>
> Now I want to unmount all btrfs systems:
>
> # ./umount -t btrfs /suse /zero /other
> # ./mount | grep suse
>
> It just unmounts everything that is mentioned, the -t has no
> limiting effect. So it is useful only with -a.
grrr... you're right, I see.. libmount always overwrites the setting
by stuff from mtab.
IMHO it would be nice to restrict the all the umount actions (like
--recursive, --all-targets or when more mountpoints specified) by the
pattern. I'll add this to the TODO file for v2.26.
Thanks!
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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