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ONEEYEMAN
Advocate
Joined: 01 Mar 2005
Posts: 3612
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 Posted: Fri Aug 08, 2014 7:19 am Post subject: [SOLVED]: Network names |
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Hi, ALL,
I successfully installed Gentoo on my newly acquired laptop alone with GRUB2. By default it does use new naming convention for the network interface names, which I wanted to override.
And so I did edit the GRUB2 configuration file:
| Code: |
IgorDellGentoo boot # cat /etc/default/grub
# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-boot/grub/files/grub.default-2,v 1.4 2013/09/21 18:10:55 floppym Exp $
#
# To populate all changes in this file you need to regenerate your
# grub configuration file afterwards:
# 'grub2-mkconfig -o /boot/grub/grub.cfg'
#
# See the grub info page for documentation on possible variables and
# their associated values.
GRUB_DISTRIBUTOR="Gentoo"
GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
# Append parameters to the linux kernel command line
GRUB_CMDLINE_LINUX="net.ifnames=0"
# Append parameters to the linux kernel command line for non-recovery entries
GRUB_CMDLINE_LINUX_DEFAULT="net.ifnames=0"
# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
# The resolution used on graphical terminal.
# Note that you can use only modes which your graphic card supports via VBE.
# You can see them in real GRUB with the command `vbeinfo'.
#GRUB_GFXMODE=640x480
# Path to theme spec txt file.
# The starfield is by default provided with use truetype.
# NOTE: when enabling custom theme, ensure you have required font/etc.
#GRUB_THEME="/boot/grub/themes/starfield/theme.txt"
# Background image used on graphical terminal.
# Can be in various bitmap formats.
#GRUB_BACKGROUND="/boot/grub/mybackground.png"
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to kernel
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY=true
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However, trying to create the new onfiguration file failed:
| Code: |
IgorDellGentoo boot # grub2-mkconfig -o /boot/grub/grub.cfg
/usr/sbin/grub2-mkconfig: line 223: /boot/grub/grub.cfg.new: No such file or directory
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Now, I am stuck with old naming conventions which I don't like and don't want. I just get used to the old ones.
I also ran just this:
| Code: |
IgorDellGentoo boot # grub2-mkconfig
Generating grub.cfg ...
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 6e038879-4460-4056-a7c1-f3d6c22d16d4
else
search --no-floppy --fs-uuid --set=root 6e038879-4460-4056-a7c1-f3d6c22d16d4
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=
insmod gettext
fi
terminal_output gfxterm
if sleep --interruptible 0 ; then
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
Found linux image: /boot/vmlinuz-3.12.20-gentoo
menuentry 'Gentoo GNU/Linux' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-6e038879-4460-4056-a7c1-f3d6c22d16d4' {
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 6e038879-4460-4056-a7c1-f3d6c22d16d4
else
search --no-floppy --fs-uuid --set=root 6e038879-4460-4056-a7c1-f3d6c22d16d4
fi
echo 'Loading Linux 3.12.20-gentoo ...'
linux /boot/vmlinuz-3.12.20-gentoo root=/dev/sda4 ro net.ifnames=0 net.ifnames=0
}
submenu 'Advanced options for Gentoo GNU/Linux' $menuentry_id_option 'gnulinux-advanced-6e038879-4460-4056-a7c1-f3d6c22d16d4' {
menuentry 'Gentoo GNU/Linux, with Linux 3.12.20-gentoo' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.12.20-gentoo-advanced-6e038879-4460-4056-a7c1-f3d6c22d16d4' {
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 6e038879-4460-4056-a7c1-f3d6c22d16d4
else
search --no-floppy --fs-uuid --set=root 6e038879-4460-4056-a7c1-f3d6c22d16d4
fi
echo 'Loading Linux 3.12.20-gentoo ...'
linux /boot/vmlinuz-3.12.20-gentoo root=/dev/sda4 ro net.ifnames=0 net.ifnames=0
}
menuentry 'Gentoo GNU/Linux, with Linux 3.12.20-gentoo (recovery mode)' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.12.20-gentoo-recovery-6e038879-4460-4056-a7c1-f3d6c22d16d4' {
load_video
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 6e038879-4460-4056-a7c1-f3d6c22d16d4
else
search --no-floppy --fs-uuid --set=root 6e038879-4460-4056-a7c1-f3d6c22d16d4
fi
echo 'Loading Linux 3.12.20-gentoo ...'
linux /boot/vmlinuz-3.12.20-gentoo root=/dev/sda4 ro single net.ifnames=0
}
Found linux image: /boot/vmlinuz-3.12.20-gentoo.old
menuentry 'Gentoo GNU/Linux, with Linux 3.12.20-gentoo.old' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.12.20-gentoo.old-advanced-6e038879-4460-4056-a7c1-f3d6c22d16d4' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 6e038879-4460-4056-a7c1-f3d6c22d16d4
else
search --no-floppy --fs-uuid --set=root 6e038879-4460-4056-a7c1-f3d6c22d16d4
fi
echo 'Loading Linux 3.12.20-gentoo.old ...'
linux /boot/vmlinuz-3.12.20-gentoo.old root=/dev/sda4 ro net.ifnames=0 net.ifnames=0
}
menuentry 'Gentoo GNU/Linux, with Linux 3.12.20-gentoo.old (recovery mode)' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.12.20-gentoo.old-recovery-6e038879-4460-4056-a7c1-f3d6c22d16d4' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4 6e038879-4460-4056-a7c1-f3d6c22d16d4
else
search --no-floppy --fs-uuid --set=root 6e038879-4460-4056-a7c1-f3d6c22d16d4
fi
echo 'Loading Linux 3.12.20-gentoo.old ...'
linux /boot/vmlinuz-3.12.20-gentoo.old root=/dev/sda4 ro single net.ifnames=0
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
done
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What am I missing? How do I regenerate the GRUB2 configuration files? Or maybe they already regenerated?
Thank you.
Last edited by ONEEYEMAN on Fri Aug 08, 2014 9:53 am; edited 1 time in total |
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ulenrich
Veteran
Joined: 10 Oct 2010
Posts: 1480
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| Posted: Fri Aug 08, 2014 7:32 am Post subject: |
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grub2-mkconfig -o /boot/grub/grub.cfg
Your parameter set to =0 should work there. |
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ONEEYEMAN
Advocate
Joined: 01 Mar 2005
Posts: 3612
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| Posted: Fri Aug 08, 2014 8:16 am Post subject: |
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Hi,
Not sure I understand.
Are you saying that my grub configuration is already regenerated?
Thank you. |
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wraeth
Developer
Joined: 08 May 2007
Posts: 72
Location: Australia
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| Posted: Fri Aug 08, 2014 9:02 am Post subject: |
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When you run `grub2-mkconfig` by itself with no options, it's generating the config but only printing it to screen. The config it's generating will have the new "predictable device naming" disabled and fall back to interface names like eth0 as can be seen by the line
| Code: | | linux /boot/vmlinuz-3.12.20-gentoo root=/dev/sda4 ro net.ifnames=0 net.ifnames=0 |
As for for the error it reported when you tried specifying the grub.cfg file, was your /boot partition mounted at the time that you ran it? It may have tried creating the configuration file in /boot/grub, but if /boot wasn't mounted, the grub folder may not have been there. |
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ulenrich
Veteran
Joined: 10 Oct 2010
Posts: 1480
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| Posted: Fri Aug 08, 2014 9:41 am Post subject: |
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| ONEEYEMAN wrote: | | Not sure I understand. |
man grub2-mkconfig
would have answered your question - but thanks @wraeth! |
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ONEEYEMAN
Advocate
Joined: 01 Mar 2005
Posts: 3612
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| Posted: Fri Aug 08, 2014 9:53 am Post subject: |
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Thank you, guys.
/boot was not mounted and after mounting everything worked. |
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Installing Gentoo
