[bug #29272] grub-install on bind mounted /boot/grub fails upon booting

[Oliver Winker]

URL:
  <http://savannah.gnu.org/bugs/?29272>

                 Summary: grub-install on bind mounted /boot/grub fails upon
booting
                 Project: GNU GRUB
            Submitted by: oli1417
            Submitted on: Sat 20 Mar 2010 01:08:16 PM GMT
                Category: Installation
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: 1.98
         Reproducibility: Every Time
         Planned Release: None

    _______________________________________________________

Details:

Hi,

I'm using a /boot partition in ext4 for booting with grub, which is then bind
mounted into a btrfs root partition:
---
lapix:~# mount |grep hda
/dev/hda2 on / type btrfs (rw,ssd)
/dev/hda1 on /media/hda1 type ext4 (rw,relatime)
/media/hda1/boot on /boot type none (rw,bind)
/dev/hda3 on /media/hda3 type btrfs (rw,ssd)
---

Installing grub on this setup using 
---
grub-install /dev/hda 
---
completes, but the resulting boot installation fails to boot grub. 

Upon booting I was only arriving in the grub rescue mode - probably the
actual /boot/grub files weren't found.

Installation works and is booting Ok, when using grub-install as followed:
---
grub-install --root-directory=/media/hda1/ /dev/hda
---

Maybe the problem is, that during installation on a bind mounted /boot/grub
directory, the actual place of /boot/grub is not correctly determined ?

Apart from that, I had also to apply the patch from following bug posting
thread, to complete the debian grub-pc 1.98-1 package update on my btrfs
setup:
---
http://launchpadlibrarian.net/40446467/999_btrfs_workaround.diff
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/450260
---

In case of more info needed, just tell.

Cheers, Oliver

 





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