URL:
<http://savannah.gnu.org/bugs/?45163>
Summary: Support for installing to LVM volumes broke
somewhere after GRUB 2.00
Project: GNU GRUB
Submitted by: hartwork
Submitted on: Thu 21 May 2015 09:38:08 PM GMT
Category: None
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: Git master
Reproducibility: Every Time
Planned Release: None
_______________________________________________________
Details:
Hi!
Earlier versions of GRUB 2 supported installation to LVM volumes using
grub-install --boot-directory=.... /dev/...
syntax. Andrei Borzenkov confirmed this to be a bug at
https://lists.gnu.org/archive/html/grub-devel/2015-05/msg00147.html .
While a BIOS are not able to boot the results, support this scenario is useful
to environments with virtual machines, where the virtual machine never sees
the true LVM nature on the outside of what is a plan disk to them on the
inside.
The following commands reproduce the setup (in RAM if /tmp is tmpfs).
With a plain LVM volume, the error is the same tough.
# tmpfile="$(mktemp)"
# echo "${tmpfile}"
# truncate --size=$((100*1024**2)) "${tmpfile}"
# loop_device_2="$(losetup --show -f "${tmpfile}")"
# echo "${loop_device_2}"
# vgcreate vg "${loop_device_2}"
# lvcreate --name lv -l 100%free vg
# sleep 1
# parted /dev/vg/lv --script mklabel msdos
# parted /dev/vg/lv --script mkpart primary ext4 4m 100%
# sleep 1
# mkfs.ext4 /dev/mapper/vg-lv1
# mkdir /mnt/lv-root
# mount /dev/mapper/vg-lv1 /mnt/lv-root
# mkdir /mnt/lv-root/boot
# grub-install --boot-directory=/mnt/lv-root/boot /dev/mapper/vg-lv ;
echo $?
Installing for i386-pc platform.
grub-install: error: disk
`lvmid/KO9MVd-KNgN-Nbo0-RJb0-pGdK-K7lO-apdskW/rrvxSA-SFY6-P6gy-1jYv-0ims-RmyL-m1KZMB'
not found.
1
For user friendly view of the related mail thread I can recommend
http://thread.gmane.org/gmane.comp.boot-loaders.grub.devel/23312
Best, Sebastian
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