[Expired for grub2 (Ubuntu) because there has been no activity for 60
days.]
** Changed in: grub2 (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1229738
Title:
grub doesn't boot with efi and md raid root
Status in grub2 package in Ubuntu:
Expired
Bug description:
dick@reordberend:/tmp$ lsb_release -rd
Description: Ubuntu 12.04.3 LTS
Release: 12.04
dick@reordberend:/tmp$ apt-cache policy grub-efi-amd64
grub-efi-amd64:
Installed: 1.99-21ubuntu3.10
Candidate: 1.99-21ubuntu3.10
Installed 12.04.3 LTS Server using md raid1 for root partition on x86-64 box
using EFI boot.
Grub installs its EFI app correctly, and it launches at boot. However, grub
can't find the root partition. Inspecting grub's config shows that it has
prefix and root set to the EFI boot partition. Manually setting those to the
raid1 root partition at the grub prompt and running normal allows booting to
proceed correctly (ie following the instructions at
http://www.gnu.org/software/grub/manual/html_node/GRUB-only-offers-a-rescue-shell.html
works).
In EFI mode, grub seems to expect its grub.cfg and modules to be in the EFI
partition. However, they are all installed in the root filesystem. The
problem can be solved in the grub-install script by giving an embedded config
to grub-mkimage
(http://www.gnu.org/software/grub/manual/html_node/Embedded-configuration.html).
grub-install already has support for this, but it fails if the root partition
is raided.
Inside grub-install, if devabstraction_module is set (and with md as
the root partition it will be) then config_opt_file is never set. The
attached patch solves the bug for me but will doubtless require
refining to be generally applicable.
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https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1229738/+subscriptions
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