[Bug 1093918] Re: grub-probe auto-detection fails on raid

Ing. Josef Klotzner 1093918 at bugs.launchpad.net
Sun Dec 30 12:18:59 UTC 2012


Dear Phillip and maybe others involved!
Please read the following carefully to understand the situation completely:

Since yesterday i tried to work around by bying a SSD to boot from, B U T  !!!
it seems the problem causing grub-probe to fail are raid drivers (i don't know sure if dmraid currently)
AND
this  problem does not only occur while trying to upgrade from ubuntu 11.10 to 12.04, it also occurs when trying to make a new install on any other harddisk than raid in the system, (like my new SSD) as long as a raid device is present in the system

i tried new installation with ubuntu 12.04 onto the SSD a few times:
failing .... installation process gets stuck immediatly after having set
up where to install  ... installer stucks at page of country to select

currently i am writing this out of a ubuntu 11.10 live CD where
installation on SSD worked like charm

without that i have changed anything manually now -- look at this (no
via_jehhchjje3 in between!):

ubuntu at ubuntu:~$ sudo dmsetup ls --tree
via_jehhchjje9 (253:8)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)
via_jehhchjje8 (253:7)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)
via_jehhchjje7 (253:6)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)
via_jehhchjje6 (253:5)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)
via_jehhchjje5 (253:4)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)
via_jehhchjje2 (253:3)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)
via_jehhchjje1 (253:1)
 └─via_jehhchjje (253:0)
    ├─ (8:48)
    └─ (8:32)

perfect !  like it should be ....

i also observed when trying failing installation with 12.04 that the list of partitions presented was absolutely incorrect for raid -- there were not only the partitions itself listed once, they were listed again further down and each single partition twice ! -- one each selectable for installation of system
even as i tried to install to SSD with ubuntu 12.04 installer and NOT to raid, it failed -- obviously due to the wrong presented raid in the system, causing the installer to fail.

with ubuntu 11.10 live CD also parted -l lists without interrupting the
output (and is NOT waiting for input as it does under 12.04 -- and i am
pretty sure that grub-install and update-grub fails because of that):

ubuntu at ubuntu:~$ sudo parted -l
Model: ATA ST2000DL003-9VT1 (scsi)
Disk /dev/sda: 2000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  39,6GB  39,6GB  primary   ntfs
 2      39,6GB  92,0GB  52,4GB  primary   ntfs
 3      92,0GB  1979GB  1887GB  primary   ntfs
 4      1979GB  2000GB  21,0GB  extended
 5      1979GB  1998GB  18,9GB  logical   ext4
 6      1998GB  2000GB  2096MB  logical   linux-swap(v1)


Model: ATA OCZ-VERTEX4 (scsi)
Disk /dev/sdb: 128GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  33,7GB  33,7GB  primary   ntfs            boot
 2      33,7GB  107GB   73,4GB  primary   ntfs
 3      107GB   128GB   21,0GB  extended
 5      107GB   126GB   18,9GB  logical   ext4
 6      126GB   128GB   2096MB  logical   linux-swap(v1)


Error: Can't have a partition outside the disk!                           

Error: /dev/sdd: unrecognised disk label

Model: Linux device-mapper (striped) (dm)
Disk /dev/mapper/via_jehhchjje: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      8225kB  43,0GB  43,0GB  primary   ntfs            boot
 2      43,0GB  95,4GB  52,4GB  primary   ntfs
 3      95,4GB  2000GB  1905GB  extended
 5      95,4GB  148GB   52,4GB  logical   ntfs
 6      148GB   1963GB  1815GB  logical   ntfs
 7      1963GB  1984GB  21,0GB  logical   ext4            raid
 8      1984GB  1998GB  14,7GB  logical   ext4            raid
 9      1998GB  2000GB  2096MB  logical   linux-swap(v1)


also this is presented different when doing with ubuntu 11.10 live CD (open count is 3 as you can see with 12.04 above and also major was 252 above:

ubuntu at ubuntu:~$ sudo dmsetup info /dev/mapper/via_jehhchjje
Name:              via_jehhchjje
State:             ACTIVE
Read Ahead:        256
Tables present:    LIVE
Open count:        7
Event number:      0
Major, minor:      253, 0
Number of targets: 1
UUID: DMRAID-via_jehhchjje

this output is the only identical:

ubuntu at ubuntu:~$ sudo blockdev --getsize64 /dev/mapper/via_jehhchjje
2000409722880

... so it looks like more being a dmraid / dmsetup / raid driver problem
"only" effecting grub-install and update-grub in ubuntu 12.04

could you please help to brake down to find the real root cause? ...
that then the "real root cause" bug can be fixed? :D

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1093918

Title:
  grub-probe auto-detection fails on raid

Status in “grub2” package in Ubuntu:
  New

Bug description:
  grub-probe auto-detection fails on raid, which can be seen f.e. on update-grub on separate hd in system.
  error messages:
  grub-probe: Fehler: cannot find a GRUB drive for /dev/mapper/via_jehhchjje7.  Check your device.map.
  grub-probe: Fehler: cannot find a GRUB drive for /dev/mapper/via_jehhchjje8.  Check your device.map.

  installation of grub in MBR of raid not possible. It was no problem
  until ubuntu 11.10, which still is in use on raid to boot from (ubuntu
  on raid /dev/mapper/via_jehhchjje7  ext4), because upgrade to 12.04 is
  not possible. There are really many users. also on servers effected,
  when you study the web via search engine  !!!!

  interesting thing is:
  josef at josef-maxtor-quad:~$ ls -al /dev/mapper
  insgesamt 0
  drwxr-xr-x  2 root root     240 Dez 27  2012 .
  drwxr-xr-x 17 root root    4840 Dez 27 00:38 ..
  crw-------  1 root root 10, 236 Dez 27 00:33 control
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje -> ../dm-0
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje1 -> ../dm-1
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje2 -> ../dm-2
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje3 -> ../dm-3
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje5 -> ../dm-4
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje6 -> ../dm-5
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje7 -> ../dm-6
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje8 -> ../dm-7  ...  here is  ubuntu 11.10 on raid
  lrwxrwxrwx  1 root root       7 Dez 27 00:33 via_jehhchjje9 -> ../dm-8

  there is a link ->>        via_jehhchjje7 -> ../dm-6

  while

  josef at josef-maxtor-quad:~$ sudo grub-probe -vd /dev/mapper/via_jehhchjje7
  [sudo] password for josef:
  grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: scanning hd2 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: scanning hd3 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos6.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos5.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos3.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos1.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos9.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos8.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos7.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos6.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos5.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos2.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos1.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos6.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos5.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos3.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos1.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos9.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos8.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos7.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos6.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos5.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos2.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos1.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: scanning hd2 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: scanning hd2,msdos6 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos5 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos3 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos2 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos1 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: scanning hd3,msdos9 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos8 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos7 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos6 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos5 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos2 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos1 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: changing current directory to /dev/mapper.
  grub-probe: Info: changing current directory to /dev/mapper.
  grub-probe: Info: changing current directory to /dev/mapper.
  grub-probe: Info: /dev/mapper/via_jehhchjje7 starts from 3647028107.
  grub-probe: Info: opening the device /dev/mapper/via_jehhchjje3.                                      <<  why is it opening jehhchjje3    ???
  grub-probe: Info: the size of /dev/mapper/via_jehhchjje3 is 3720743606.                          <<  of course following lines
  grub-probe: Info: Partition 0 starts from 2.                                                                                  <<  end up in error therefore
  grub-probe: Info: Partition 4 starts from 102404790.
  grub-probe: Fehler: cannot find a GRUB drive for /dev/mapper/via_jehhchjje7.  Check your device.map.

  throws errors                 (as it is in use inside calling update-
  grub)

  calling the link target throws NO ERROR  !!!

  josef at josef-maxtor-quad:~$ sudo grub-probe -vd /dev/dm-6
  grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for dmraid_nv RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: scanning hd2 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: scanning hd3 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos6.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos5.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos3.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd2,msdos1.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos9.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos8.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos7.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos6.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos5.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos2.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid09 RAID devices on disk hd3,msdos1.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos6.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos5.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos3.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos2.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd2,msdos1.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos9.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos8.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos7.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos6.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos5.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos2.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: Scanning for mdraid1x RAID devices on disk hd3,msdos1.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: scanning hd2 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: scanning hd2,msdos6 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos5 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos3 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos2 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd2,msdos1 for LVM.
  grub-probe: Info: the size of hd2 is 1953525168.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: scanning hd3,msdos9 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos8 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos7 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos6 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos5 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos2 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: scanning hd3,msdos1 for LVM.
  grub-probe: Info: the size of hd3 is 3907050240.
  grub-probe: Info: no LVM signature found.
  grub-probe: Info: opening /dev/dm-6.                                                  <<<   OK
  grub-probe: Info: the size of /dev/dm-6 is 40949622.
  ext2

  ok  ---   the erronous part a little bit more in detail:

  josef at josef-maxtor-quad:~$ sudo strace grub-probe -vd /dev/mapper/via_jehhchjje7
  //                   top part of output skipped from terminal window  :D
  (2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5f50)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5f5c)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "Scanning for mdraid1x RAID devic"..., 53Scanning for mdraid1x RAID devices on disk hd3,msdos2) = 53
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5f50)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5f5c)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje2", O_RDONLY|O_SYNC) = 4
  lseek(4, 52427895296, SEEK_SET)         = 52427895296
  read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32768) = 32768
  brk(0x156e000)                          = 0x156e000
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "Scanning for mdraid1x RAID devic"..., 53Scanning for mdraid1x RAID devices on disk hd3,msdos1) = 53
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5f50)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5f5c)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd2 for LVM", 20scanning hd2 for LVM)    = 20
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5fb0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5fbc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd2,msdos6 for LVM", 27scanning hd2,msdos6 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd2,msdos5 for LVM", 27scanning hd2,msdos5 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd2,msdos3 for LVM", 27scanning hd2,msdos3 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd2,msdos2 for LVM", 27scanning hd2,msdos2 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd2,msdos1 for LVM", 27scanning hd2,msdos1 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/sda", O_RDONLY)              = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd2 is 1953525168", 29the size of hd2 is 1953525168) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3 for LVM", 20scanning hd3 for LVM)    = 20
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5fb0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5fbc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos9 for LVM", 27scanning hd3,msdos9 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos8 for LVM", 27scanning hd3,msdos8 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos7 for LVM", 27scanning hd3,msdos7 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos6 for LVM", 27scanning hd3,msdos6 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos5 for LVM", 27scanning hd3,msdos5 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos2 for LVM", 27scanning hd3,msdos2 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "scanning hd3,msdos1 for LVM", 27scanning hd3,msdos1 for LVM) = 27
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 0), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5cc0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5ccc)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of hd3 is 3907050240", 29the size of hd3 is 3907050240) = 29
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "no LVM signature found", 22no LVM signature found)  = 22
  write(2, ".\n", 2.
  )                      = 2
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4840, ...}) = 0
  lstat("/dev/mapper", {st_mode=S_IFDIR|0755, st_size=240, ...}) = 0
  lstat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
  readlink("/dev/mapper/via_jehhchjje7", "../dm-6", 4095) = 7
  lstat("/dev/dm-6", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  ioctl(3, DM_TABLE_DEPS, 0x13e6d30)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x151d830)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x154d890)      = 0
  ioctl(3, DM_TABLE_STATUS, 0x13e6c80)    = 0
  openat(AT_FDCWD, "/dev/mapper", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
  getcwd(0x13a4450, 10)                   = -1 ERANGE (Numerical result out of range)
  getcwd("/home/josef", 20)               = 12
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "changing current directory to /d"..., 41changing current directory to /dev/mapper) = 41
  write(2, ".\n", 2.
  )                      = 2
  chdir("/dev/mapper")                    = 0
  getdents(4, /* 12 entries */, 32768)    = 440
  lstat("via_jehhchjje3", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
  stat("via_jehhchjje3", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 3), ...}) = 0
  getcwd(0x13b4ba0, 10)                   = -1 ERANGE (Numerical result out of range)
  getcwd("/dev/mapper", 20)               = 12
  chdir("/home/josef")                    = 0
  close(4)                                = 0
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  ioctl(3, DM_TABLE_DEPS, 0x151d830)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x154d890)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x15518a0)      = 0
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4840, ...}) = 0
  lstat("/dev/mapper", {st_mode=S_IFDIR|0755, st_size=240, ...}) = 0
  lstat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
  readlink("/dev/mapper/via_jehhchjje7", "../dm-6", 4095) = 7
  lstat("/dev/dm-6", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  ioctl(3, DM_TABLE_DEPS, 0x151d830)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x154d890)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x15518a0)      = 0
  ioctl(3, DM_TABLE_STATUS, 0x151d830)    = 0
  openat(AT_FDCWD, "/dev/mapper", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
  getcwd(0x13a4450, 10)                   = -1 ERANGE (Numerical result out of range)
  getcwd("/home/josef", 20)               = 12
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "changing current directory to /d"..., 41changing current directory to /dev/mapper) = 41
  write(2, ".\n", 2.
  )                      = 2
  chdir("/dev/mapper")                    = 0
  getdents(4, /* 12 entries */, 32768)    = 440
  lstat("via_jehhchjje3", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
  stat("via_jehhchjje3", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 3), ...}) = 0
  getcwd(0x13b4ba0, 10)                   = -1 ERANGE (Numerical result out of range)
  getcwd("/dev/mapper", 20)               = 12
  chdir("/home/josef")                    = 0
  close(4)                                = 0
  lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4840, ...}) = 0
  lstat("/dev/mapper", {st_mode=S_IFDIR|0755, st_size=240, ...}) = 0
  lstat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
  readlink("/dev/mapper/via_jehhchjje7", "../dm-6", 4095) = 7
  lstat("/dev/dm-6", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  ioctl(3, DM_TABLE_DEPS, 0x154d890)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x15518a0)      = 0
  ioctl(3, DM_TABLE_DEPS, 0x15558b0)      = 0
  ioctl(3, DM_TABLE_STATUS, 0x154d890)    = 0
  openat(AT_FDCWD, "/dev/mapper", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
  getcwd(0x13e5810, 10)                   = -1 ERANGE (Numerical result out of range)
  getcwd("/home/josef", 20)               = 12
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "changing current directory to /d"..., 41changing current directory to /dev/mapper) = 41
  write(2, ".\n", 2.
  )                      = 2
  chdir("/dev/mapper")                    = 0
  getdents(4, /* 12 entries */, 32768)    = 440
  lstat("via_jehhchjje3", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
  stat("via_jehhchjje3", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 3), ...}) = 0
  getcwd(0x13a4450, 10)                   = -1 ERANGE (Numerical result out of range)
  getcwd("/dev/mapper", 20)               = 12
  chdir("/home/josef")                    = 0
  close(4)                                = 0
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  stat("/dev/mapper/via_jehhchjje7", {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 6), ...}) = 0
  ioctl(3, DM_TABLE_STATUS, 0x15518a0)    = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "/dev/mapper/via_jehhchjje7 start"..., 49/dev/mapper/via_jehhchjje7 starts from 3647028107) = 49
  write(2, ".\n", 2.
  )                      = 2
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "opening the device /dev/mapper/v"..., 45opening the device /dev/mapper/via_jehhchjje3) = 45
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje3", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(252, 3), ...}) = 0
  ioctl(4, BLKGETSIZE64, 0x7fff11cf5ea0)  = 0
  ioctl(4, BLKSSZGET, 0x7fff11cf5eac)     = 0
  close(4)                                = 0
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "the size of /dev/mapper/via_jehh"..., 52the size of /dev/mapper/via_jehhchjje3 is 3720743606) = 52
  write(2, ".\n", 2.
  )                      = 2
  open("/dev/mapper/via_jehhchjje3", O_RDONLY|O_SYNC) = 4
  lseek(4, 0, SEEK_SET)                   = 0
  read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 512) = 512
  read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32256) = 32256
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "Partition 0 starts from 2", 25Partition 0 starts from 2) = 25
  write(2, ".\n", 2.
  )                      = 2
  lseek(4, 52427882496, SEEK_SET)         = 52427882496
  read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32768) = 32768
  write(2, "grub-probe: Info:", 17grub-probe: Info:)       = 17
  write(2, " ", 1 )                        = 1
  write(2, "Partition 4 starts from 10240479"..., 33Partition 4 starts from 102404790) = 33
  write(2, ".\n", 2.
  )                      = 2
  lseek(4, 52431224832, SEEK_SET)         = 52431224832
  read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 27648) = 27648
  open("/dev/mapper/via_jehhchjje3p1", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p2", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p3", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p4", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p5", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p6", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p7", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p8", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p9", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p10", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p11", O_RDONLY) = -1 ENOENT (No such file or directory)
  lseek(4, 52431252480, SEEK_SET)         = 52431252480
  read(4, "\353R\220NTFS    \0\2\10\0\0\0\0\0\0\0\370\0\0\0\0\0\0\0\0\0\0"..., 5120) = 5120
  brk(0x1592000)                          = 0x1592000
  open("/dev/mapper/via_jehhchjje3p1", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p2", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p3", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p4", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p5", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p6", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p7", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p8", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p9", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p10", O_RDONLY) = -1 ENOENT (No such file or directory)
  open("/dev/mapper/via_jehhchjje3p11", O_RDONLY) = -1 ENOENT (No such file or directory)
  lseek(4, 52431257600, SEEK_SET)         = 52431257600
  read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32768) = 32768
  close(4)                                = 0
  write(2, "grub-probe: Fehler:", 19grub-probe: Fehler:)     = 19
  write(2, " ", 1 )                        = 1
  write(2, "cannot find a GRUB drive for /de"..., 79cannot find a GRUB drive for /dev/mapper/via_jehhchjje7.  Check your device.map) = 79
  write(2, ".\n", 2.
  )                      = 2
  close(3)                                = 0
  exit_group(1)                           = ?

  it seems the problem looks like opening the wrong device:
  open("/dev/mapper/via_jehhchjje3",
  while via_jehhchjje7  should get opened                  .....    hope you can see in source code, why it takes wrong number

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: grub-pc 1.99-21ubuntu3.4
  ProcVersionSignature: Ubuntu 3.2.0-35.55-generic 3.2.34
  Uname: Linux 3.2.0-35-generic x86_64
  ApportVersion: 2.0.1-0ubuntu15.1
  Architecture: amd64
  Date: Thu Dec 27 00:35:33 2012
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=de_AT:de
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_AT.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: Upgraded to precise on 2012-05-13 (227 days ago)

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