[Bug 700910] Re: Unable to install GRUB2 to the same device as contains aufs in natty

[Launchpad Bug Tracker]

[Expired for grub2 (Ubuntu) because there has been no activity for 60
days.]

** Changed in: grub2 (Ubuntu)
       Status: Incomplete => Expired

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Title:
  Unable to install GRUB2 to the same device as contains aufs in natty

Status in “grub2” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: grub2

  version: 1.99~20110106-1ubuntu1

  I'm attempting to install GRUB2 to the same device that contains AUFS.
  Eg the entire ISO image is placed on a partition, and i'm trying to
  install GRUB to that same partition while booted into an environment
  that has that AUFS image loaded.

  Here's what the mount layout looks like:
  ---------------------------
  # mount
  aufs on / type aufs (rw)
  none on /proc type proc (rw,noexec,nosuid,nodev)
  none on /sys type sysfs (rw,noexec,nosuid,nodev)
  fusectl on /sys/fs/fuse/connections type fusectl (rw)
  none on /dev type devtmpfs (rw,mode=0755)
  none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
  /dev/sda2 on /cdrom type vfat (rw,noatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
  /dev/loop0 on /rofs type squashfs (ro,noatime)
  none on /sys/kernel/debug type debugfs (rw)
  none on /sys/kernel/security type securityfs (rw)
  none on /dev/shm type tmpfs (rw,nosuid,nodev)
  tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
  none on /var/run type tmpfs (rw,nosuid,mode=0755)
  none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
  binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)

  ---------------------------
  Here's the GRUB install command I am using:
  ---------------------------
  # sudo grub-install --force --root-directory=/cdrom /dev/sda2
  /usr/sbin/grub-probe: error: cannot stat `aufs'.
  Auto-detection of a filesystem of aufs failed.
  Please report this together with the output of "/usr/sbin/grub-probe --device-map="/cdrom/boot/grub/device.map" --target=fs -v /cdrom/boot/grub" to <bug-grub at gnu.org>

  ---------------------------
  Here's a rather simple GRUB probe line that is failing.  It should return /dev/sda2 (as that's where /cdrom is actually mounted)
  ---------------------------
  # grub-probe --verbose --target=device /cdrom/boot/grub/
  aufs

  ---------------------------
  Here's the GRUB probe that grub-install requested in bugs
  ---------------------------
  # /usr/sbin/grub-probe --device-map="/cdrom/boot/grub/device.map" --target=fs -v /cdrom/boot/grub
  /usr/sbin/grub-probe: info: scanning hd0 for LVM.
  /usr/sbin/grub-probe: info: scanning hd0 for LVM.
  /usr/sbin/grub-probe: error: cannot find a GRUB drive for aufs.  Check your device.map.

  ---------------------------
  This is a regression from grub2 1.99~20110104-2ubuntu1.

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