[Bug 681535] Re: Auto-detection of a filesystem of /dev/md0 failed.

[max]

I'm still seeing this in natty / 11.04 -- with all updates installed.

Error message : usr/sbin/grub-probe: error: no such disk.
Auto-detection of a filesystem of /dev/md126 failed.
Please report this together with the output of "/usr/sbin/grub-probe --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to <bug-grub at gnu.org>
/usr/sbin/grub-probe: error: no such disk.

# dpkg -l | grep grub
ii  grub-common                       1.99~rc1-13ubuntu3                         GRand Unified Bootloader, version 2 (common files)
ii  grub-gfxpayload-lists             0.2                                        GRUB gfxpayload blacklist
iF  grub-pc                           1.99~rc1-13ubuntu3                         GRand Unified Bootloader, version 2 (PC/BIOS version)
iU  grub2                             1.99~rc1-13ubuntu3                         GRand Unified Bootloader, version 2 (dummy package)

Workaround:  Install grub2 to from another distro, but then I run into
problems every time i try to 'apt-get upgrade'.  How can I tell apt /
dpkg to leave the "foreign"version of grub2 alone?  Or better yet, how
do I tell it to use something from backports for this package only?

Please let me know if I can supply any more output or experiments for
followup.

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https://bugs.launchpad.net/bugs/681535

Title:
  Auto-detection of a filesystem of /dev/md0 failed.

Status in “grub2” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: grub2

  Setting up grub-pc (1.99~20101124-1ubuntu1) ...
  /usr/sbin/grub-probe: error: no such disk.
  Auto-detection of a filesystem of /dev/md0 failed.
  Please report this together with the output of "/usr/sbin/grub-probe --device-map="/boot/grub/device.map" --target=fs -v /boot/grub" to <bug-grub at gnu.org>
  /usr/sbin/grub-probe: error: no such disk.

  > sudo /usr/sbin/grub-probe --device-map="/boot/grub/device.map" --target=fs -v /boot/grub
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: scanning hd0 for LVM.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: no LVM signature found
  .
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: scanning hd1 for LVM.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: no LVM signature found
  .
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: scanning hd2 for LVM.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: no LVM signature found
  .
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: changing current directory to /dev.
  /usr/sbin/grub-probe: info: changing current directory to snd.
  /usr/sbin/grub-probe: info: changing current directory to by-path.
  /usr/sbin/grub-probe: info: changing current directory to cpu.
  /usr/sbin/grub-probe: info: changing current directory to shm.
  /usr/sbin/grub-probe: info: changing current directory to dri.
  /usr/sbin/grub-probe: info: opening md0.
  /usr/sbin/grub-probe: error: no such disk.

  with grub 1.98+20100804-7ubuntu1:

  > sudo /usr/sbin/grub-probe --device-map="/boot/grub/device.map" --target=fs -v /boot/grub
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd0 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd1 is 1953525168.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: the size of hd2 is 781422768.
  /usr/sbin/grub-probe: info: changing current directory to /dev.
  /usr/sbin/grub-probe: info: changing current directory to snd.
  /usr/sbin/grub-probe: info: changing current directory to by-path.
  /usr/sbin/grub-probe: info: changing current directory to cpu.
  /usr/sbin/grub-probe: info: changing current directory to shm.
  /usr/sbin/grub-probe: info: changing current directory to dri.
  /usr/sbin/grub-probe: info: opening md0.
  ext2

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