[Bug 878070] Re: /usr/sbin/grub-probe: error: no mapping exists for `rootvol-boot'.

[Alain St-Denis]

WTF?!?! I encountered the same issue today while trying to upgrade to
linux-image-server 2.6.32-37. I was about to build grub2 from natty
using prevu but that complained about a missing dependancy (xorriso). So
I installed xorriso (even if I think this is required only for prevu)
and the problem went away. grub-probe can read my LVM root again. I
don't understand this...

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https://bugs.launchpad.net/bugs/878070

Title:
  /usr/sbin/grub-probe: error: no mapping exists for `rootvol-boot'.

Status in “grub2” package in Ubuntu:
  Fix Released

Bug description:
  # grub-install /dev/sda
  /usr/sbin/grub-probe: error: no mapping exists for `rootvol-boot'.
  Auto-detection of a filesystem module failed.
  Please specify the module with the option `--modules' explicitly.

  Clearly rootvol-boot is an LVM LV.  It has an ext4 filesystem on it.

  Not sure what else to tell you or say.  Please let me know if there is
  any further info you need/want.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: grub-pc 1.98-1ubuntu12
  ProcVersionSignature: Ubuntu 2.6.32-34.77-generic 2.6.32.44+drm33.19
  Uname: Linux 2.6.32-34-generic i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Wed Oct 19 06:19:26 2011
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2

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