desktop-packages team mailing list archive

[Michal Frynas <859200@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The gnome-applets' drivemount-applet shows 2 distinct icons for
encrypted luks device and it's opened and mounted sub-device. The first
one displays 'Encrypted with size 32GB, not mounted', whereas the second
says 'Temp, mounted'.

The subject partition is a lvm logical volume named system-data
(vg=system,lv=data). /dev/mapper/system-data is acctually a symlink to
/dev/dm-0. Inside that partition there is encrypted luks partition
created. It's name is secure-data and it points to /dev/dm-1. That
partition holds ext4 filesystem, and is manually mounted in ~/Temp.

After booting up there is only 'Encrypted with size 32GB, not mounted'
icon visible. When I click 'Mount Encrypted...' nothing happens. It's
not mounted. When I open the luks partition manually and mount it then
there appears a second icons. That one is mounted and I can open or
unmount it using the popup menu of drivemount. It seems the first icon
is related to the /dev/dm-0 device and it is recogized as volume
(add_volume function). The second icon is related to the /dev/dm-1
and/or its symlink /dev/mapper/secure-data (see below) and I believe it
is recognized as a new mount (add_mount function).

I see here two problems:
1. drivemount is not aware about the relation between these two devices. There should be implementation added that will ask cryptsetup library for the mapping lvm_device/physical_device <-> encrypted_device and on that basis one of these icons should be considered redundant.
2. drivemount is not able to properly mount cryptsetup volumes. For that particular type of volumes there should be 'mount -t crypt ...' used. 

I'm not sure if the bug belongs to gnome-applets or the gdu
implementation.

$ ll /dev/mapper/
...
crw-------  1 root root 10, 236 2011-09-21 18:00 control
lrwxrwxrwx  1 root root       7 2011-09-21 18:00 secure-data -> ../dm-1
lrwxrwxrwx  1 root root       7 2011-09-24 19:02 system-data -> ../dm-0

$ mount
...
/dev/mapper/secure-data on /home/testuser/Temp type ext4 (rw,commit=0,commit=0)

$ lsb_release -rd
Description:	Ubuntu 11.04
Release:	11.04

$ apt-cache policy gnome-applets
gnome-applets:
  Zainstalowana: 2.32.1.1-0ubuntu5
  Kandydująca:   2.32.1.1-0ubuntu5
  Tabela wersji:
 *** 2.32.1.1-0ubuntu5 0
        500 http://pl.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: gnome-applets (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: cryptsetup encrypted lvm

-- 
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https://bugs.launchpad.net/bugs/859200

Title:
  drivemount-applet recognizes cryptsetup volume as two mountable
  volumes

Status in “gnome-applets” package in Ubuntu:
  New

Bug description:
  The gnome-applets' drivemount-applet shows 2 distinct icons for
  encrypted luks device and it's opened and mounted sub-device. The
  first one displays 'Encrypted with size 32GB, not mounted', whereas
  the second says 'Temp, mounted'.

  The subject partition is a lvm logical volume named system-data
  (vg=system,lv=data). /dev/mapper/system-data is acctually a symlink to
  /dev/dm-0. Inside that partition there is encrypted luks partition
  created. It's name is secure-data and it points to /dev/dm-1. That
  partition holds ext4 filesystem, and is manually mounted in ~/Temp.

  After booting up there is only 'Encrypted with size 32GB, not mounted'
  icon visible. When I click 'Mount Encrypted...' nothing happens. It's
  not mounted. When I open the luks partition manually and mount it then
  there appears a second icons. That one is mounted and I can open or
  unmount it using the popup menu of drivemount. It seems the first icon
  is related to the /dev/dm-0 device and it is recogized as volume
  (add_volume function). The second icon is related to the /dev/dm-1
  and/or its symlink /dev/mapper/secure-data (see below) and I believe
  it is recognized as a new mount (add_mount function).

  I see here two problems:
  1. drivemount is not aware about the relation between these two devices. There should be implementation added that will ask cryptsetup library for the mapping lvm_device/physical_device <-> encrypted_device and on that basis one of these icons should be considered redundant.
  2. drivemount is not able to properly mount cryptsetup volumes. For that particular type of volumes there should be 'mount -t crypt ...' used. 

  I'm not sure if the bug belongs to gnome-applets or the gdu
  implementation.

  $ ll /dev/mapper/
  ...
  crw-------  1 root root 10, 236 2011-09-21 18:00 control
  lrwxrwxrwx  1 root root       7 2011-09-21 18:00 secure-data -> ../dm-1
  lrwxrwxrwx  1 root root       7 2011-09-24 19:02 system-data -> ../dm-0

  $ mount
  ...
  /dev/mapper/secure-data on /home/testuser/Temp type ext4 (rw,commit=0,commit=0)

  $ lsb_release -rd
  Description:	Ubuntu 11.04
  Release:	11.04

  $ apt-cache policy gnome-applets
  gnome-applets:
    Zainstalowana: 2.32.1.1-0ubuntu5
    Kandydująca:   2.32.1.1-0ubuntu5
    Tabela wersji:
   *** 2.32.1.1-0ubuntu5 0
          500 http://pl.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
          100 /var/lib/dpkg/status

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