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Re: Nautilus mounts all filesystems



Hi,

You should really file a bug for this instead of using email.

On Thu, 2009-03-19 at 20:03 +0100, Alexander Larsson wrote:
> On Thu, 2009-03-19 at 12:23 -0600, Pete Zaitcev wrote:
> > Dear Alexander:
> > 
> > I'm wondering if you may help with a suggestion. A recent update to
> > Nautilus in Rawhide started to mount all filesystems it can find.
> > Look at the goofy UID mountpoints under media:
> > 
> > [zaitcev niphredil ~]$ df
> > Filesystem           1K-blocks      Used Available Use% Mounted on
> > /dev/mapper/N1-Fedora
> >                       11109328   6180420   4355468  59% /
> > /dev/sda2               132221     62889     62505  51% /boot
> > tmpfs                   963128       100    963028   1% /dev/shm
> > /dev/mapper/N1-Q      90826872  69911240  16301900  82% /q
> > /dev/dm-3              5482948   3540836   1663584  69% /media/0b64f5ac-88c8-44bb-9a5a-f6a6c9cfe3b0
> > /dev/dm-4              5776952   3715936   1762828  68% /media/5dd9d61a-9eaa-453d-8084-fa5be7f51eef
> 
> Wow. Cool stuff. :)
> I CC:ed david zeuthen, he's doing most of the mount/filesystem/whatever
> work.

You can put a label on the file systems if you don't like the UUID. Then
we'll use the label for the mount point.

> > This is rather inconventient for my laptop where I have a few
> > virtual systems. Usually they are mounted manually, through this
> > /etc/fstab:
> > 
> > [zaitcev niphredil ~]$ more /etc/fstab 
> > /dev/N1/Fedora          /                       ext3    defaults        1 1
> > LABEL=/boot             /boot                   ext3    defaults        1 2
> > tmpfs                   /dev/shm                tmpfs   defaults        0 0
> > devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
> > sysfs                   /sys                    sysfs   defaults        0 0
> > proc                    /proc                   proc    defaults        0 0
> > debug                   /sys/kernel/debug       debugfs defaults,noauto 0 0
> > /dev/N1/Swap            swap                    swap    defaults        0 0
> > /dev/N1/Q               /q                      ext3    defaults,noatime 1 2
> > /dev/N1/RHEL4           /mnt/rhel4              ext3    defaults,noauto 0 0
> > /dev/N1/RHEL5           /mnt/rhel5              ext3    defaults,noauto 0 0
> 
> So, are the /dev/N1/RHEL4 things the same as whatever get mounted
> as /dev/dm-3, etc above?

Do the /dev/N1/* device nodes actually exist? If they don't, then the
entry in /etc/fstab gets ignored; there's nothing better to do.

> > So, is this behaviour configurable?
> > 
> > Failing that, I'm wondering if we could NOT mount volumes that ARE
> > explicitly mentioned in /etc/fstab. Sounds counter-intuitive, but
> > I like the way it works now for iPod, USB readers, flash keys, etc.
> > I don't want to go back to caveman tricks... except for the multitude
> > of special logical volumes.
> 
> This is actually whats supposed to happen. We're only automounting (and
> even showing in the UI) things that are mounted in /media. However, I
> think something is getting confused about your fstab and not
> understanding some of the device node names, thus thinking they are not
> in the fstab.
> 
> Or something suchlike. David, what do you think? You know this stuff
> better.

By default filesystems a) on removable media; and b) hotpluggable drives
(usb, firewire etc.) are automounted without having the user do
anything.

Which is what is expected from the OS.

If the filesystem is on a device that does not meet a) or b) then
additional privilege is needed. For example a partition on an internal
disk qualifies as such.

Specifically you need an authorization for the PolicyKit action called
org.freedesktop.devicekit.disks.filesystem-mount-system-internal; check
with polkit-gnome-authorization or the polkit-auth commandline tool
whether you have that authorization.

Note that users don't have this authorization by default so what you
want (only removable media and hotpluggable drives to be mounted) is
what happens by default.

Note that there's a bug right now that causes us to think that all
device mapper things are removable, see

https://bugzilla.redhat.com/show_bug.cgi?id=489397

so these are automounted by default. Which is probably what you are
complaining about.

This is fixed in these packages.

http://koji.fedoraproject.org/koji/taskinfo?taskID=1250267

Please try them to see if they fix the problem (you will have to reboot
for the changes to take effect.. or kick over the devkit-disks-daemon
and login/logout).

      David



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