gnome-mount unmount problem

[Joe Marcus Clarke]

On Tue, 2007-04-17 at 02:10 +0200, Volker wrote:
> On 04/16/07 18:40, Joe Marcus Clarke wrote:
> > Volker wrote:
> >> On 04/16/07 14:53, Joe Marcus Clarke wrote:
> >>> Volker wrote:
> >>>> Hi again...
> >>>>
> >>>> While I've experienced trouble with gnome-mount, I probably shot
> >>>> myself into the foot (or have found another gnome-mount bug?).
> >>>>
> >>>> When logging into gdm, gnome-mount is mounting all volumes it can
> >>>> find (can this be configured in any way?). When trying to unmount
> >>>> such an automounted volume, I'm getting:
> >>>>
> >>>> gnome-mount --no-ui --block --unmount --verbose --device
> >>>> /dev/label/xchange
> >>>> gnome-mount 0.6
> >>>> libhal-storage.c 1330 : INFO: called LIBHAL_FREE_DBUS_ERROR but
> >>>> dbusError was not set.
> >>>> ** (gnome-mount:1402): DEBUG: Unmounting
> >>>> /org/freedesktop/Hal/devices/volume_uuid_DB29_8A68
> >>>> ** (gnome-mount:1402): DEBUG: Setting up 750ms timer for Flushing
> >>>> Cache dialog
> >>>> ** (gnome-mount:1402): DEBUG: in unmount_done : user_data = 0x0
> >>>>
> >>>> ** (gnome-mount:1402): WARNING **: Unmount failed for
> >>>> /org/freedesktop/Hal/devices/volume_uuid_DB29_8A68:
> >>>> org.freedesktop.Hal.Device.Volume.PermissionDenied : Volume mounted
> >>>> by uid UNKNOWN cannot be unmounted by uid 1001.
> >>>>
> >>>> This is the same with any automounted volume (either FAT, NTFS). I'm
> >>>> always getting "...mounted by uid UNKNOWN...".
> >>>>
> >>>> Unmounting these gnome automounted volumes as root, gives me the
> >>>> chances to manually mount and unmount them properly from the panel.
> >>>> These mounts are really done by gnome, as I've checked the mount
> >>>> status before logging into gdm.
> >>>>
> >>>> Last week while trying to find a solution for the gnome-mount NTFS
> >>>> problem, I've changed polkitd and hal permissions to
> >>>> Allow=gid:operator but AFAIR this has been the only change. As there
> >>>> are not many settings for HAL, polkit and gnome-mount, I'm not quite
> >>>> sure if this is my mistake or if it's a bug.
> >>>>
> >>>> Any hints on how to hunt this?
> >>> What version of hal do you have installed, and when did you last restart
> >>> it?
> >>>
> >>> Joe
> >>>
> >>
> >> Joe,
> >>
> >> sorry for not posting this info. I'm using latest hal from ports:
> >> hal-0.5.8.20070403
> >>
> >> As this is my notebook, it's restarted on a daily basis. My desktop
> >> machine (also using Gnome2, latest) does not automount everything it
> >> can find so I'm unable to recreate the problem on that desktop.
> >>
> >> The main question is: Why or when does gnome-mount automount volumes
> >> and how does one disable automounting? If gnome-mount would not
> >> automount on startup, volumes can be mounted and unmounted without
> >> error. If it does automount, I'm receiving the error message
> >> "mounted by uid UNKNOWN".
> > 
> > gnome-volume-manager is responsible for mounting file systems.  How many
> > instances or g-v-m are you running?  Do you have any other scripts or
> > session instances that start gnome-mount?
> > 
> > Joe
> > 
> 
> Joe,
> 
> thank you for your time on this.
> 
> %ps ax | grep vol
>  1265  ??  Ss     0:04.87 gnome-volume-manager --sm-disable
> 
> There's just one instance running and it's started from gnome-session.
> 
> How does g-v-m decide on which volumes to mount (automount) at gdm
> login?

It depends on the settings in the Removable Drives and Media capplet.
It may not mount anything.  If "Mount removable media when inserted" is
not checked, then g-v-m will not mount anything when it starts.

> 
> I _think_ I've solved that problem. I've compared the hald and
> polkitd settings with my desktop system (which is less manipulated
> than my notebook) I've figured out the hal-storage-fixed* settings
> are set to 'Allow=' by default. On my troubled notebook system, I've
> had 'Allow=uid:__all__' in it.
> 
> Setting this to 'Allow=' and rebooting the system, Gnome came up
> with no automounted volumes.

What volumes exactly were being mounted that were not mounted before?
This setting should only control the mounting of fixed disks (i.e. those
with storage.removable=false in hal).

> 
> Could you please give me some pointers on how hald, polkitd, g-v-m
> and gnome-mount interact and which knobs and settings are where to
> find? I would try to start some man pages for them as this issue
> seems to be a typical "user (me) did stupid things and screwed up a
> running system by the lack of docs". But I need more knowledge about
> these to write anything about them.

Admittedly, there is what I consider to be a bug in g-v-m where it will
try to mount all unmounted volumes with info.ignore=false as long as
that "Mount removable media when inserted" box is checked.  I think
there needs to be a separate property that explicitly lets one disable
the auto-mounting of fixed media.

Joe

> 
> Thanks,
> 
> Volker
> 
> 
-- 
Joe Marcus Clarke
FreeBSD GNOME Team      ::      gnome at FreeBSD.org
FreeNode / #freebsd-gnome
http://www.FreeBSD.org/gnome
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