[Pkg-utopia-maintainers] Bug#648810: Bug#648810: udisks-daemon: regression from squeeze: partitions on USB disks are not scanned by default

Bjørn Mork bjorn at mork.no
Tue Nov 15 11:32:16 UTC 2011


Michael Biebl <biebl at debian.org> writes:

> I can't see the usability regression. 

OK. I certainly don't have the full picture here, and this might be a
bug in some other part of the puzzle.  If you can provide any pointers
where to look further, then I'd appreciate that.

But the observed fact on my laptop is that this used to work out of the
box, and it doesn't anymore after upgrading to wheezy.  That's why I
labelled it "regression".

> If no one is using the udisks service, why should it be started?

If I am right assuming that the task "scan for partitions and inform the
kernel" is delegated to udisks, then it looks to me as if udisks-daemon
need to run regardless of whether anything uses the udisks service.  It
is then not just the dbus interface that depends on udisks-daemon, but
anything using the kernel interfaces.

If my assumption is wrong, then I would appreciate a hint as to where to
look for this.  Maybe udev?

My question is really "what service is responsible for calling the
BLKRRPART ioctl whenever a new disk is detected?"

> Btw, the device probing is done by udev and its helpers and not udisks
> itself, ie. if you attach a usb device, and then later start
> udisks-daemon, your statement that those partitions wouldn't be detected
> is simply not true.

The disk is probed and detected regardless of udisks-daemon, but not
its partitions.

> Can you provide further information what kind of problem you are having?

Plugging in my phone (which provides a partitioned hard drive and a CD
over USB), without running udisks-daemon:

bjorn at nemi:~$ ps aux|grep udisk
bjorn    12482  0.0  0.0   8920   852 pts/6    S+   12:04   0:00 grep udisk


nemi:/home/bjorn# udevadm monitor --kernel --udev
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent



KERNEL[12802.743473] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1 (usb)
KERNEL[12802.744379] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0 (usb)
KERNEL[12802.746485] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10 (scsi)
KERNEL[12802.746536] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/scsi_host/host10 (scsi_host)
UDEV  [12802.756836] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1 (usb)
UDEV  [12802.767990] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0 (usb)
UDEV  [12802.768837] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10 (scsi)
UDEV  [12802.769338] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/scsi_host/host10 (scsi_host)
KERNEL[12803.749427] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0 (scsi)
KERNEL[12803.749488] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0 (scsi)
KERNEL[12803.749584] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/scsi_disk/10:0:0:0 (scsi_disk)
KERNEL[12803.749758] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/scsi_device/10:0:0:0 (scsi_device)
KERNEL[12803.750145] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV  [12803.750196] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0 (scsi)
KERNEL[12803.750528] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/bsg/10:0:0:0 (bsg)
KERNEL[12803.750733] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1 (scsi)
KERNEL[12803.752976] add      /devices/virtual/bdi/8:16 (bdi)
KERNEL[12803.753888] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/block/sdb (block)
KERNEL[12803.757430] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/block/sdb (block)
KERNEL[12803.759888] add      /devices/virtual/bdi/11:1 (bdi)
KERNEL[12803.760836] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/block/sr1 (block)
KERNEL[12803.761293] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/scsi_device/10:0:0:1 (scsi_device)
KERNEL[12803.761938] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/block/sr1 (block)
KERNEL[12803.762624] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/scsi_generic/sg3 (scsi_generic)
KERNEL[12803.762901] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/bsg/10:0:0:1 (bsg)
UDEV  [12803.768524] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1 (scsi)
UDEV  [12803.769526] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0 (scsi)
UDEV  [12803.771572] add      /devices/virtual/bdi/8:16 (bdi)
UDEV  [12803.771605] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/scsi_device/10:0:0:1 (scsi_device)
UDEV  [12803.771625] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/scsi_disk/10:0:0:0 (scsi_disk)
UDEV  [12803.772237] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/bsg/10:0:0:1 (bsg)
UDEV  [12803.773005] add      /devices/virtual/bdi/11:1 (bdi)
UDEV  [12803.776060] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/scsi_device/10:0:0:0 (scsi_device)
UDEV  [12803.777941] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV  [12803.779058] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/bsg/10:0:0:0 (bsg)
UDEV  [12803.780405] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/scsi_generic/sg3 (scsi_generic)
UDEV  [12803.791858] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/block/sr1 (block)
UDEV  [12803.814886] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:1/block/sr1 (block)
UDEV  [12803.851827] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/block/sdb (block)
UDEV  [12803.865867] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host10/target10:0:0/10:0:0:0/block/sdb (block)



(Note that the events are repeated because the phone reenumerates after
selecting "hard disk mode".  Please ignore this)

As you can see, no partitions on sdb there and neither sdb nor its
partitions are detected by the kernel:

bjorn at nemi:~$ cat /proc/partitions 
major minor  #blocks  name

   8        0  125034840 sda
   8        1     129724 sda1
   8        2  124904988 sda2
 254        0  124903960 dm-0
 254        1  119668736 dm-1
 254        2    5234688 dm-2



I see that udev has assigned the device file to the "floppy" group
though...  That might be the real cause for my problems?  Didn't notice
this before:


bjorn at nemi:~$ ls -l /dev/sdb*
brw-rw---- 1 root floppy 8, 16 Nov 15 12:07 /dev/sdb



Running udisks --dump at this point will *not* find any partitions
either (as expected):

========================================================================
Showing information for /org/freedesktop/UDisks/devices/dm_2d0
  native-path:                 /sys/devices/virtual/block/dm-0
  device:                      254:0
  device-file:                 /dev/dm-0
    presentation:              /dev/dm-0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       1
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        127901655040
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    
    model:                     
    revision:                  
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 (unknown)
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/dm_2d1
  native-path:                 /sys/devices/virtual/block/dm-1
  device:                      254:1
  device-file:                 /dev/dm-1
    presentation:              /dev/dm-1
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  1
  mount paths:             /
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       1
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        122540785664
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    
    model:                     
    revision:                  
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 (unknown)
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/dm_2d2
  native-path:                 /sys/devices/virtual/block/dm-2
  device:                      254:2
  device-file:                 /dev/dm-2
    presentation:              /dev/dm-2
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       1
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        5360320512
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    
    model:                     
    revision:                  
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 (unknown)
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda
  device:                      8:0
  device-file:                 /dev/sda
    presentation:              /dev/sda
    by-id:                     /dev/disk/by-id/ata-SAMSUNG_MMCQE28G8MUP-0VA_SE838B4464
    by-id:                     /dev/disk/by-id/scsi-SATA_SAMSUNG_MMCQE28SE838B4464
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        128035676160
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  partition table:
    scheme:                    mbr
    count:                     2
  drive:
    vendor:                    ATA
    model:                     SAMSUNG MMCQE28G8MUP-0VA
    revision:                  VAM0DLQ1
    serial:                    SE838B4464
    WWN:                       
    detachable:                0
    can spindown:              1
    rotational media:          No
    write-cache:               enabled
    ejectable:                 0
    adapter:                   /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2
    ports:
      /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2/host0
    similar devices:
    media:                     
      compat:                 
    interface:                 ata
    if speed:                  (unknown)
    ATA SMART:                 Data not collected

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda1
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1
  device:                      8:1
  device-file:                 /dev/sda1
    presentation:              /dev/sda1
    by-id:                     /dev/disk/by-id/ata-SAMSUNG_MMCQE28G8MUP-0VA_SE838B4464-part1
    by-id:                     /dev/disk/by-id/scsi-SATA_SAMSUNG_MMCQE28SE838B4464-part1
    by-id:                     /dev/disk/by-uuid/0b7e7b52-e5cd-49b8-a304-2bc5f9b7f2b5
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0-part1
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  1
  mount paths:             /boot
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        132837376
  block size:                  512
  job underway:                no
  usage:                       filesystem
  type:                        ext2
  version:                     1.0
  uuid:                        0b7e7b52-e5cd-49b8-a304-2bc5f9b7f2b5
  label:                       
  partition:
    part of:                   /org/freedesktop/UDisks/devices/sda
    scheme:                    mbr
    number:                    1
    type:                      0x83
    flags:                     boot
    offset:                    131072
    alignment offset:          0
    size:                      132837376
    label:                     
    uuid:                      

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda2
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda2
  device:                      8:2
  device-file:                 /dev/sda2
    presentation:              /dev/sda2
    by-id:                     /dev/disk/by-id/ata-SAMSUNG_MMCQE28G8MUP-0VA_SE838B4464-part2
    by-id:                     /dev/disk/by-id/scsi-SATA_SAMSUNG_MMCQE28SE838B4464-part2
    by-id:                     /dev/disk/by-uuid/11bdb12d-56cf-4fd1-af2a-e0432b55a8e3
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0-part2
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        127902707712
  block size:                  512
  job underway:                no
  usage:                       crypto
  type:                        crypto_LUKS
  version:                     1
  uuid:                        11bdb12d-56cf-4fd1-af2a-e0432b55a8e3
  label:                       
  luks device:
    holder:                    /org/freedesktop/UDisks/devices/dm_2d0
  partition:
    part of:                   /org/freedesktop/UDisks/devices/sda
    scheme:                    mbr
    number:                    2
    type:                      0x83
    flags:                    
    offset:                    132968448
    alignment offset:          0
    size:                      127902707712
    label:                     
    uuid:                      

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sdb
  native-path:                 /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb
  device:                      8:16
  device-file:                 /dev/sdb
    presentation:              /dev/sdb
    by-id:                     /dev/disk/by-id/usb-SEMC_Mass_Storage_43423531314D42573144-0:0
    by-path:                   /dev/disk/by-path/pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             0
  removable:                   1
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            1
    detection by polling:      1
    detection inhibitable:     1
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        15931539456
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  partition table:
    scheme:                    
    count:                     1
  drive:
    vendor:                    SEMC
    model:                     Mass Storage
    revision:                  0001
    serial:                    43423531314D42573144
    WWN:                       
    detachable:                1
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 usb
    if speed:                  480000000 bits/s
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sr0
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0
  device:                      11:0
  device-file:                 /dev/sr0
    presentation:              /dev/sr0
    by-id:                     /dev/disk/by-id/ata-MATSHITADVD-RAM_UJ-844
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-1:0:0:0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             0
  removable:                   1
  has media:                   0
    detects change:            1
    detection by polling:      0
    detection inhibitable:     1
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        0
  block size:                  0
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    MATSHITA
    model:                     MATSHITADVD-RAM UJ-844
    revision:                  RC02
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 1
    adapter:                   /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2
    ports:
      /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2/host1
    similar devices:
    media:                     
      compat:                  optical_cd optical_cd_r optical_cd_rw optical_dvd optical_dvd_plus_r optical_dvd_plus_rw optical_dvd_r optical_dvd_ram optical_dvd_rw optical_mrw optical_mrw_w
    interface:                 scsi
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sr1
  native-path:                 /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:1/block/sr1
  device:                      11:1
  device-file:                 /dev/sr1
    presentation:              /dev/sr1
    by-id:                     /dev/disk/by-id/usb-SEMC_CD-ROM_43423531314D42573144-0:1
    by-path:                   /dev/disk/by-path/pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:1
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             0
  removable:                   1
  has media:                   0
    detects change:            1
    detection by polling:      0
    detection inhibitable:     1
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        0
  block size:                  0
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    SEMC
    model:                     CD-ROM
    revision:                  0001
    serial:                    43423531314D42573144
    WWN:                       
    detachable:                1
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 1
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                  optical_cd optical_mrw optical_mrw_w
    interface:                 usb
    if speed:                  480000000 bits/s
    ATA SMART:                 not available

========================================================================


But running udisks has the side effect that udisks-daemon is started,
and that will trigger these interesting events:

KERNEL[13123.172428] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb (block)
KERNEL[13123.187854] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb (block)
KERNEL[13123.190016] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb/sdb1 (block)
UDEV  [13123.286163] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb (block)
UDEV  [13123.355741] change   /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb (block)
UDEV  [13123.501462] add      /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb/sdb1 (block)

bjorn at nemi:~$ ps aux|grep udisk
root     13167  0.0  0.0 127444  3828 ?        Sl   12:13   0:00 /usr/lib/udisks/udisks-daemon
root     13168  0.0  0.0  45108   764 ?        S    12:13   0:00 udisks-daemon: polling /dev/sdb


And now the partition device is of course also there, as expected from
the above udev output:

bjorn at nemi:~$ ls -l /dev/sdb*
brw-rw---- 1 root floppy 8, 16 Nov 15 12:13 /dev/sdb
brw-rw---- 1 root floppy 8, 17 Nov 15 12:13 /dev/sdb1



And running udisks --dump a second time shows it as well:


========================================================================
Showing information for /org/freedesktop/UDisks/devices/dm_2d0
  native-path:                 /sys/devices/virtual/block/dm-0
  device:                      254:0
  device-file:                 /dev/dm-0
    presentation:              /dev/dm-0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       1
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        127901655040
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    
    model:                     
    revision:                  
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 (unknown)
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/dm_2d1
  native-path:                 /sys/devices/virtual/block/dm-1
  device:                      254:1
  device-file:                 /dev/dm-1
    presentation:              /dev/dm-1
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  1
  mount paths:             /
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       1
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        122540785664
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    
    model:                     
    revision:                  
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 (unknown)
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/dm_2d2
  native-path:                 /sys/devices/virtual/block/dm-2
  device:                      254:2
  device-file:                 /dev/dm-2
    presentation:              /dev/dm-2
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       1
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        5360320512
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    
    model:                     
    revision:                  
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 (unknown)
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda
  device:                      8:0
  device-file:                 /dev/sda
    presentation:              /dev/sda
    by-id:                     /dev/disk/by-id/ata-SAMSUNG_MMCQE28G8MUP-0VA_SE838B4464
    by-id:                     /dev/disk/by-id/scsi-SATA_SAMSUNG_MMCQE28SE838B4464
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        128035676160
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  partition table:
    scheme:                    mbr
    count:                     2
  drive:
    vendor:                    ATA
    model:                     SAMSUNG MMCQE28G8MUP-0VA
    revision:                  VAM0DLQ1
    serial:                    SE838B4464
    WWN:                       
    detachable:                0
    can spindown:              1
    rotational media:          No
    write-cache:               enabled
    ejectable:                 0
    adapter:                   /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2
    ports:
      /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2/host0
    similar devices:
    media:                     
      compat:                 
    interface:                 ata
    if speed:                  (unknown)
    ATA SMART:                 Updated at Tue 15 Nov 2011 12:13:35 PM CET
      overall assessment:      Good
===============================================================================
 Attribute       Current|Worst|Threshold  Status   Value       Type     Updates
===============================================================================
 power-on-hours               98| 98|  0    n/a    319.5 days  Old-age  Online 
 power-cycle-count            96| 96|  0    n/a    3435        Old-age  Online 
 attribute-175                99| 99| 11   good    0           Old-age  Online 
 attribute-176               100|100| 11   good    0           Old-age  Online 
 attribute-177                99| 99| 23   good    0           Pre-fail Online 
 attribute-178                68| 68| 11   good    0           Pre-fail Online 
 attribute-179                97| 97| 10   good    0           Pre-fail Online 
 attribute-180                97| 97| 10   good    0           Pre-fail Online 
 attribute-181                99| 99| 10   good    0           Old-age  Online 
 attribute-182               100|100| 10   good    0           Old-age  Online 
 attribute-183                99| 99| 10   good    0           Pre-fail Online 
 reported-uncorrect          100|100|  0    n/a    0 sectors   Pre-fail Online 
 hardware-ecc-recovered      200|200|  0    n/a    0           Old-age  Online 
 offline-uncorrectable       100|100|  0    n/a    0 sectors   Old-age  Offline
 udma-crc-error-count        253|253|  0    n/a    0           Old-age  Online 
 power-on-seconds-2          199|199|  0    n/a    0           Old-age  Online 
 uncorrectable-ecc-count     100|100|  0    n/a    0 sectors   Old-age  Online 
 good-block-rate             100|100|  0    n/a    0           Old-age  Online 
 attribute-236                99| 99|  0    n/a    0           Old-age  Online 
 attribute-237                99| 99|  0    n/a    0           Old-age  Online 
 attribute-238               100|100|  0    n/a    0           Old-age  Online 

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda1
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1
  device:                      8:1
  device-file:                 /dev/sda1
    presentation:              /dev/sda1
    by-id:                     /dev/disk/by-id/ata-SAMSUNG_MMCQE28G8MUP-0VA_SE838B4464-part1
    by-id:                     /dev/disk/by-id/scsi-SATA_SAMSUNG_MMCQE28SE838B4464-part1
    by-id:                     /dev/disk/by-uuid/0b7e7b52-e5cd-49b8-a304-2bc5f9b7f2b5
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0-part1
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  1
  mount paths:             /boot
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        132837376
  block size:                  512
  job underway:                no
  usage:                       filesystem
  type:                        ext2
  version:                     1.0
  uuid:                        0b7e7b52-e5cd-49b8-a304-2bc5f9b7f2b5
  label:                       
  partition:
    part of:                   /org/freedesktop/UDisks/devices/sda
    scheme:                    mbr
    number:                    1
    type:                      0x83
    flags:                     boot
    offset:                    131072
    alignment offset:          0
    size:                      132837376
    label:                     
    uuid:                      

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sda2
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda2
  device:                      8:2
  device-file:                 /dev/sda2
    presentation:              /dev/sda2
    by-id:                     /dev/disk/by-id/ata-SAMSUNG_MMCQE28G8MUP-0VA_SE838B4464-part2
    by-id:                     /dev/disk/by-id/scsi-SATA_SAMSUNG_MMCQE28SE838B4464-part2
    by-id:                     /dev/disk/by-uuid/11bdb12d-56cf-4fd1-af2a-e0432b55a8e3
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0-part2
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             1
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        127902707712
  block size:                  512
  job underway:                no
  usage:                       crypto
  type:                        crypto_LUKS
  version:                     1
  uuid:                        11bdb12d-56cf-4fd1-af2a-e0432b55a8e3
  label:                       
  luks device:
    holder:                    /org/freedesktop/UDisks/devices/dm_2d0
  partition:
    part of:                   /org/freedesktop/UDisks/devices/sda
    scheme:                    mbr
    number:                    2
    type:                      0x83
    flags:                    
    offset:                    132968448
    alignment offset:          0
    size:                      127902707712
    label:                     
    uuid:                      

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sdb
  native-path:                 /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb
  device:                      8:16
  device-file:                 /dev/sdb
    presentation:              /dev/sdb
    by-id:                     /dev/disk/by-id/usb-SEMC_Mass_Storage_43423531314D42573144-0:0
    by-path:                   /dev/disk/by-path/pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             0
  removable:                   1
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:05 PM CET)
    detects change:            1
    detection by polling:      1
    detection inhibitable:     1
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        15931539456
  block size:                  512
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  partition table:
    scheme:                    mbr
    count:                     1
  drive:
    vendor:                    SEMC
    model:                     Mass Storage
    revision:                  0001
    serial:                    43423531314D42573144
    WWN:                       
    detachable:                1
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 0
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                 
    interface:                 usb
    if speed:                  480000000 bits/s
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sdb1
  native-path:                 /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:0/block/sdb/sdb1
  device:                      8:17
  device-file:                 /dev/sdb1
    presentation:              /dev/sdb1
    by-id:                     /dev/disk/by-id/usb-SEMC_Mass_Storage_43423531314D42573144-0:0-part1
    by-id:                     /dev/disk/by-uuid/6536-6661
    by-path:                   /dev/disk/by-path/pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0-part1
  detected at:                 Tue 15 Nov 2011 12:13:06 PM CET
  system internal:             0
  removable:                   0
  has media:                   1 (detected at Tue 15 Nov 2011 12:13:06 PM CET)
    detects change:            0
    detection by polling:      0
    detection inhibitable:     0
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        15927345152
  block size:                  512
  job underway:                no
  usage:                       filesystem
  type:                        vfat
  version:                     FAT32
  uuid:                        6536-6661
  label:                       
  partition:
    part of:                   /org/freedesktop/UDisks/devices/sdb
    scheme:                    mbr
    number:                    1
    type:                      0x0c
    flags:                    
    offset:                    4194304
    alignment offset:          0
    size:                      15927345152
    label:                     
    uuid:                      

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sr0
  native-path:                 /sys/devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0
  device:                      11:0
  device-file:                 /dev/sr0
    presentation:              /dev/sr0
    by-id:                     /dev/disk/by-id/ata-MATSHITADVD-RAM_UJ-844
    by-path:                   /dev/disk/by-path/pci-0000:00:1f.2-scsi-1:0:0:0
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             0
  removable:                   1
  has media:                   0
    detects change:            1
    detection by polling:      0
    detection inhibitable:     1
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        0
  block size:                  0
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    MATSHITA
    model:                     MATSHITADVD-RAM UJ-844
    revision:                  RC02
    serial:                    
    WWN:                       
    detachable:                0
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 1
    adapter:                   /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2
    ports:
      /org/freedesktop/UDisks/adapters/0000_3a00_3a1f_2e2/host1
    similar devices:
    media:                     
      compat:                  optical_cd optical_cd_r optical_cd_rw optical_dvd optical_dvd_plus_r optical_dvd_plus_rw optical_dvd_r optical_dvd_ram optical_dvd_rw optical_mrw optical_mrw_w
    interface:                 scsi
    if speed:                  (unknown)
    ATA SMART:                 not available

========================================================================
Showing information for /org/freedesktop/UDisks/devices/sr1
  native-path:                 /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host11/target11:0:0/11:0:0:1/block/sr1
  device:                      11:1
  device-file:                 /dev/sr1
    presentation:              /dev/sr1
    by-id:                     /dev/disk/by-id/usb-SEMC_CD-ROM_43423531314D42573144-0:1
    by-path:                   /dev/disk/by-path/pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:1
  detected at:                 Tue 15 Nov 2011 12:13:05 PM CET
  system internal:             0
  removable:                   1
  has media:                   0
    detects change:            1
    detection by polling:      0
    detection inhibitable:     1
    detection inhibited:       0
  is read only:                0
  is mounted:                  0
  mount paths:             
  mounted by uid:              0
  presentation hide:           0
  presentation nopolicy:       0
  presentation name:           
  presentation icon:           
  automount hint:              
  size:                        0
  block size:                  0
  job underway:                no
  usage:                       
  type:                        
  version:                     
  uuid:                        
  label:                       
  drive:
    vendor:                    SEMC
    model:                     CD-ROM
    revision:                  0001
    serial:                    43423531314D42573144
    WWN:                       
    detachable:                1
    can spindown:              0
    rotational media:          Yes, unknown rate
    write-cache:               unknown
    ejectable:                 1
    adapter:                   Unknown
    ports:
    similar devices:
    media:                     
      compat:                  optical_cd optical_mrw optical_mrw_w
    interface:                 usb
    if speed:                  480000000 bits/s
    ATA SMART:                 not available

========================================================================





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