[SOLVED] Installed LTS kernel- device '/dev/mapper/vg0-root' not found

PimA · 2020-05-03 08:43:24

I've installed Arch with lvm and luks. Everything works but when I add linux-lts and regenerate a GRUB config the normal kernel still works but the LTS version not:
(btw: i know /dev/sdc3 should be UUID= but I get the same error then so I just left that for now)

EDIT: same procedure does work fine with linux-zen (which is the same version as normal linux kernel)

A password is required to access the luks volume:
mount: /new_root: special device /dev/mapper/vg0-root does not exist.
ERROR: device '/dev/mapper/vg0-root' not found, Skipping fsck.
mount: /new_root: special device /dev/mapper/vg0-root does not exist.
You are now being dropped into an emergency shell.
sh: can't access tty; job control turned off
[rootfs ]#

What did I missed?

/etc/default/grub

# Preload both GPT and MBR modules so that they are not missed
GRUB_PRELOAD_MODULES="part_gpt part_msdos"

# Uncomment to enable booting from LUKS encrypted devices
#GRUB_ENABLE_CRYPTODISK=y

# Set to 'countdown' or 'hidden' to change timeout behavior,
# press ESC key to display menu.
GRUB_TIMEOUT_STYLE=menu

# Uncomment to use basic console
GRUB_TERMINAL_INPUT=console

# Uncomment to disable graphical terminal
#GRUB_TERMINAL_OUTPUT=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=auto

# Uncomment to allow the kernel use the same resolution used by grub
GRUB_GFXPAYLOAD_LINUX=keep

# Uncomment if you want GRUB to pass to the Linux kernel the old parameter
# format "root=/dev/xxx" instead of "root=/dev/disk/by-uuid/xxx"
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
GRUB_DISABLE_RECOVERY=true

# Uncomment and set to the desired menu colors.  Used by normal and wallpaper
# modes only.  Entries specified as foreground/background.
#GRUB_COLOR_NORMAL="light-blue/black"
#GRUB_COLOR_HIGHLIGHT="light-cyan/blue"

# Uncomment one of them for the gfx desired, a image background or a gfxtheme
#GRUB_BACKGROUND="/path/to/wallpaper"
#GRUB_THEME="/path/to/gfxtheme"

# Uncomment to get a beep at GRUB start
#GRUB_INIT_TUNE="480 440 1"

# Uncomment to make GRUB remember the last selection. This requires
# setting 'GRUB_DEFAULT=saved' above.
#GRUB_SAVEDEFAULT="true"

/boot/grub/grub.cfg

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
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$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod lvm
insmod ext2
set root='lvmid/y69jCV-wrkQ-ny3b-0V1E-U67E-hfpD-YBMaMG/YtKkdw-6q3P-fnbz-nt4c-iM8x-6mf6-FnOIEt'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint='lvmid/y69jCV-wrkQ-ny3b-0V1E-U67E-hfpD-YBMaMG/YtKkd
w-6q3P-fnbz-nt4c-iM8x-6mf6-FnOIEt'  1600f5de-c7c4-483e-abfa-ddf324f79ea0
else
  search --no-floppy --fs-uuid --set=root 1600f5de-c7c4-483e-abfa-ddf324f79ea0
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=nl_NL
  insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'g
nulinux-simple-1600f5de-c7c4-483e-abfa-ddf324f79ea0' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_gpt
        insmod ext2
        set root='hd2,gpt2'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275//disk@0,gpt2' --hint-bio
s=hd2,gpt2 --hint-efi=hd2,gpt2 --hint-baremetal=ahci2,gpt2  8a600166-2251-4ee7-ab09-15c253990c99
        else
          search --no-floppy --fs-uuid --set=root 8a600166-2251-4ee7-ab09-15c253990c99
        fi
        echo    'Loading Linux linux-lts ...'
        linux   /vmlinuz-linux-lts root=/dev/mapper/vg0-root rw cryptdevice=/dev/sdc3:luks:allow-dis
cards loglevel=3 quiet cryptdevice=/dev/sdc3:luks:allow-discards
        echo    'Loading initial ramdisk ...'
        initrd  /initramfs-linux-lts.img
}
submenu 'Advanced options for Arch Linux' $menuentry_id_option 'gnulinux-advanced-1600f5de-c7c4-483e
-abfa-ddf324f79ea0' {
        menuentry 'Arch Linux, with Linux linux-lts' --class arch --class gnu-linux --class gnu --cl
ass os $menuentry_id_option 'gnulinux-linux-lts-advanced-1600f5de-c7c4-483e-abfa-ddf324f79ea0' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod ext2
                set root='hd2,gpt2'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275//disk@0,gpt2' --
hint-bios=hd2,gpt2 --hint-efi=hd2,gpt2 --hint-baremetal=ahci2,gpt2  8a600166-2251-4ee7-ab09-15c25399
0c99
                else
                  search --no-floppy --fs-uuid --set=root 8a600166-2251-4ee7-ab09-15c253990c99
                fi
                echo    'Loading Linux linux-lts ...'
                linux   /vmlinuz-linux-lts root=/dev/mapper/vg0-root rw cryptdevice=/dev/sdc3:luks:a
llow-discards loglevel=3 quiet cryptdevice=/dev/sdc3:luks:allow-discards
                echo    'Loading initial ramdisk ...'
                initrd  /initramfs-linux-lts.img
        }
        menuentry 'Arch Linux, with Linux linux-lts (fallback initramfs)' --class arch --class gnu-l
inux --class gnu --class os $menuentry_id_option 'gnulinux-linux-lts-fallback-1600f5de-c7c4-483e-abf
a-ddf324f79ea0' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod ext2
                set root='hd2,gpt2'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275//disk@0,gpt2' --
hint-bios=hd2,gpt2 --hint-efi=hd2,gpt2 --hint-baremetal=ahci2,gpt2  8a600166-2251-4ee7-ab09-15c25399
0c99
                else
                  search --no-floppy --fs-uuid --set=root 8a600166-2251-4ee7-ab09-15c253990c99
                fi
                echo    'Loading Linux linux-lts ...'
                linux   /vmlinuz-linux-lts root=/dev/mapper/vg0-root rw cryptdevice=/dev/sdc3:luks:a
llow-discards loglevel=3 quiet cryptdevice=/dev/sdc3:luks:allow-discards
                echo    'Loading initial ramdisk ...'
                initrd  /initramfs-linux-lts-fallback.img
        }
        menuentry 'Arch Linux, with Linux linux' --class arch --class gnu-linux --class gnu --class 
os $menuentry_id_option 'gnulinux-linux-advanced-1600f5de-c7c4-483e-abfa-ddf324f79ea0' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod ext2
                set root='hd2,gpt2'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275//disk@0,gpt2' --
hint-bios=hd2,gpt2 --hint-efi=hd2,gpt2 --hint-baremetal=ahci2,gpt2  8a600166-2251-4ee7-ab09-15c25399
0c99
                else
                  search --no-floppy --fs-uuid --set=root 8a600166-2251-4ee7-ab09-15c253990c99
                fi
                echo    'Loading Linux linux ...'
                linux   /vmlinuz-linux root=/dev/mapper/vg0-root rw cryptdevice=/dev/sdc3:luks:allow
-discards loglevel=3 quiet cryptdevice=/dev/sdc3:luks:allow-discards
                echo    'Loading initial ramdisk ...'
                initrd  /initramfs-linux.img
        }
        menuentry 'Arch Linux, with Linux linux (fallback initramfs)' --class arch --class gnu-linux
 --class gnu --class os $menuentry_id_option 'gnulinux-linux-fallback-1600f5de-c7c4-483e-abfa-ddf324
f79ea0' {
                load_video
                set gfxpayload=keep
                insmod gzio
                insmod part_gpt
                insmod ext2
                set root='hd2,gpt2'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275//disk@0,gpt2' --
hint-bios=hd2,gpt2 --hint-efi=hd2,gpt2 --hint-baremetal=ahci2,gpt2  8a600166-2251-4ee7-ab09-15c25399
0c99
                else
                  search --no-floppy --fs-uuid --set=root 8a600166-2251-4ee7-ab09-15c253990c99
                fi
                echo    'Loading Linux linux ...'
                linux   /vmlinuz-linux root=/dev/mapper/vg0-root rw cryptdevice=/dev/sdc3:luks:allow
-discards loglevel=3 quiet cryptdevice=/dev/sdc3:luks:allow-discards
                echo    'Loading initial ramdisk ...'
                initrd  /initramfs-linux-fallback.img
        }
}

### 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 ###

/etc/mkinitcpio.conf

# vim:set ft=sh
# MODULES
# The following modules are loaded before any boot hooks are
# run.  Advanced users may wish to specify all system modules
# in this array.  For instance:
#     MODULES=(piix ide_disk reiserfs)
MODULES=(ext4)

# BINARIES
# This setting includes any additional binaries a given user may
# wish into the CPIO image.  This is run last, so it may be used to
# override the actual binaries included by a given hook
# BINARIES are dependency parsed, so you may safely ignore libraries
BINARIES=()

# FILES
# This setting is similar to BINARIES above, however, files are added
# as-is and are not parsed in any way.  This is useful for config files.
FILES=()

# HOOKS
# This is the most important setting in this file.  The HOOKS control the
# modules and scripts added to the image, and what happens at boot time.
# Order is important, and it is recommended that you do not change the
# order in which HOOKS are added.  Run 'mkinitcpio -H <hook name>' for
# help on a given hook.
# 'base' is _required_ unless you know precisely what you are doing.
# 'udev' is _required_ in order to automatically load modules
# 'filesystems' is _required_ unless you specify your fs modules in MODULES
# Examples:
##   This setup specifies all modules in the MODULES setting above.
##   No raid, lvm2, or encrypted root is needed.
#    HOOKS=(base)
#
##   This setup will autodetect all modules for your system and should
##   work as a sane default
#    HOOKS=(base udev autodetect block filesystems)
#
##   This setup will generate a 'full' image which supports most systems.
##   No autodetection is done.
#    HOOKS=(base udev block filesystems)
#
##   This setup assembles a pata mdadm array with an encrypted root FS.
##   Note: See 'mkinitcpio -H mdadm' for more information on raid devices.
#    HOOKS=(base udev block mdadm encrypt filesystems)
#
##   This setup loads an lvm2 volume group on a usb device.
#    HOOKS=(base udev block lvm2 filesystems)
#
##   NOTE: If you have /usr on a separate partition, you MUST include the
#    usr, fsck and shutdown hooks.
HOOKS=(base udev autodetect modconf block encrypt lvm2 filesystems keyboard fsck)

# COMPRESSION
# Use this to compress the initramfs image. By default, gzip compression
# is used. Use 'cat' to create an uncompressed image.
#COMPRESSION="gzip"
#COMPRESSION="bzip2"
#COMPRESSION="lzma"
#COMPRESSION="xz"
#COMPRESSION="lzop"
#COMPRESSION="lz4"

# COMPRESSION_OPTIONS
# Additional options for the compressor
#COMPRESSION_OPTIONS=()

Last edited by PimA (2020-05-08 10:01:23)

Lone_Wolf · 2020-05-03 12:11:44

The order of things in your mkinitcpio.conf appears to be incorrect .
https://wiki.archlinux.org/index.php/Dm-crypt

Which of those methods did you choose ?

Does the lts fallback image work for you ?

PimA · 2020-05-03 19:19:20

Lone_Wolf wrote:

The order of things in your mkinitcpio.conf appears to be incorrect .
https://wiki.archlinux.org/index.php/Dm-crypt
Which of those methods did you choose ?
Does the lts fallback image work for you ?

I used 'Encrypting an entire system'.

I changed the order in mkinitcpio.conf but that doesn't resolve the problem.

No, the fallback image of linux (linux-5.6.8.arch1-1) doesn't work either. But the recent (5.6.8) linux and linux-zen kernel both work.

Last edited by PimA (2020-05-03 19:28:37)

PimA · 2020-05-07 06:14:38

Has anyone any idea what this could be?

PimA · 2020-05-08 10:00:35

Solved!

I changed the hooks in mkinitcpio.conf to:
HOOKS=(base udev autodetect keyboard keymap consolefont modconf block lvm2 encrypt filesystems fsck)
and ran:
mkinitcpio -p linux

Then I changed /etc/default/grub to use the UUID
GRUB_CMDLINE_LINUX=”cryptdevice=UUID=UUIDofdevice:vg0 root=/dev/mapper/vg0-root”
and ran:
grub-mkconfig -o /boot/grub/grub.cfg

Arch Linux

#1 2020-05-03 08:43:24

[SOLVED] Installed LTS kernel- device '/dev/mapper/vg0-root' not found

#2 2020-05-03 12:11:44

Re: [SOLVED] Installed LTS kernel- device '/dev/mapper/vg0-root' not found

#3 2020-05-03 19:19:20

Re: [SOLVED] Installed LTS kernel- device '/dev/mapper/vg0-root' not found

#4 2020-05-07 06:14:38

Re: [SOLVED] Installed LTS kernel- device '/dev/mapper/vg0-root' not found

#5 2020-05-08 10:00:35

Re: [SOLVED] Installed LTS kernel- device '/dev/mapper/vg0-root' not found

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