----- Original Message -----
From: Chris Murphy
Sent: 05/05/14 07:35 AM
To: Community support for Fedora users
Subject: Re: grub2
On May 4, 2014, at 4:33 PM, Patrick Dupre <pdupre(a)gmx.com> wrote:
> Hello,
>
> After the installation of a new kernel (typically during an update).
> There is a change of the file /boot/grub2/grub.cfg.
>
> However, the new menuentry created is not correct.
> The new one includes
> linux /vmlinuz-3.14.2-200.fc20.x86_64 root=/dev/mapper/VolGrpSys_DK1-root
> which wrong.
> I can change it manually.
>
> I cannot guess where the information is found!
> the
> set root='lvm/VolGrpSys_DK1-root'
>
> is correct
The first one looks correct, the second one doesn't. Can you either post the entire
grub.cfg, or you can also edit an older entry and check what root= it uses. For any rootfs
on LVM, I expect root=/dev/mapper/VG-LV. When updating the kernel, it calls grubby, which
should just create a new entry based on a previous entry only updating the name of the
kernel and initramfs accordingly. I haven't seen it change the root entry.
The other thing you can do is create a new grub.cfg from scratch by using
grub2-mkconfig -o /boot/grub2/grub.cfg
This is the same command the installer used when Fedora was installed.
Thank you for the information.
When I run grub2-mkconfig -o /boot/grub2/grub.cfg.test
the generated file is correct.
I am not able to reproduce manually what happens during the 2 last kernal updates.
I will check again after the next update.
===========================================================================
Patrick DUPRÉ | | email: pdupre(a)gmx.com
Laboratoire de Physico-Chimie de l'Atmosphère | |
Université du Littoral-Côte d'Opale | |
Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44
189A, avenue Maurice Schumann | | 59140 Dunkerque, France
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