os-prober fails when multiple initrd images

Drax <[email protected]>
Newsgroups gmane.comp.boot-loaders.grub.bugs
Message-ID <[email protected]> 
OS prober fails when the target OS has a separate boot partition and 
multiple initrd images.

I have both Debian and Manjaro installed on my laptop. When using 
Debian's update-grub, I get a grub.cfg with a wrong path for Manjaro's 
initramfs.

It should be:

linux /vmlinuz ...
initrd /intel-ucode.img /initramfs-6.4-x86_64.img

but instead I get:

linux /vmlinuz ...
initrd /intel-ucode.img */boot*/initramfs-6.4-x86_64.img

(whole grub.cfg attached)

Upon looking at grub.d/30_os-prober.in (line #226), it appears the 
script only removes the first occurrence of /boot, so the next image has 
a wrong path.

(util/grub.d/30_os-prober.in #226)
LINITRD="${LINITRD#/boot}"

Suggestion, something like:

LINITRD="$(echo "$LINITRD" | sed -re 's+(^| )/boot+\1+g')"


Kind regards,
Aeron Draxar
grub.cfg (text/plain, 8.6 KB) 
#
# 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 ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${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
search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
    font="/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=30
else
  if [ x$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
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
insmod png
if background_image /grub/.background_cache.png; then
  set color_normal=white/black
  set color_highlight=black/white
else
  set menu_color_normal=cyan/blue
  set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
	set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-a57c7a4d-b209-4007-af40-d33b8b66eb42' {
	load_video
	insmod gzio
	if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
	insmod part_gpt
	insmod ext2
	search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
	echo	'Loading Linux 6.3.0-1-amd64 ...'
	linux	/vmlinuz-6.3.0-1-amd64 root=/dev/mapper/meissa-debian ro  quiet splash loglevel=3
	echo	'Loading initial ramdisk ...'
	initrd	/initrd.img-6.3.0-1-amd64
}
submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-a57c7a4d-b209-4007-af40-d33b8b66eb42' {
	menuentry 'Debian GNU/Linux, with Linux 6.3.0-1-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.3.0-1-amd64-advanced-a57c7a4d-b209-4007-af40-d33b8b66eb42' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
		echo	'Loading Linux 6.3.0-1-amd64 ...'
		linux	/vmlinuz-6.3.0-1-amd64 root=/dev/mapper/meissa-debian ro  quiet splash loglevel=3
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-6.3.0-1-amd64
	}
	menuentry 'Debian GNU/Linux, with Linux 6.3.0-1-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.3.0-1-amd64-recovery-a57c7a4d-b209-4007-af40-d33b8b66eb42' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
		echo	'Loading Linux 6.3.0-1-amd64 ...'
		linux	/vmlinuz-6.3.0-1-amd64 root=/dev/mapper/meissa-debian ro single 
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-6.3.0-1-amd64
	}
	menuentry 'Debian GNU/Linux, with Linux 6.1.0-10-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-10-amd64-advanced-a57c7a4d-b209-4007-af40-d33b8b66eb42' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
		echo	'Loading Linux 6.1.0-10-amd64 ...'
		linux	/vmlinuz-6.1.0-10-amd64 root=/dev/mapper/meissa-debian ro  quiet splash loglevel=3
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-6.1.0-10-amd64
	}
	menuentry 'Debian GNU/Linux, with Linux 6.1.0-10-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-10-amd64-recovery-a57c7a4d-b209-4007-af40-d33b8b66eb42' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root bdcca85a-5101-4780-a1fc-6f1a00a42b3e
		echo	'Loading Linux 6.1.0-10-amd64 ...'
		linux	/vmlinuz-6.1.0-10-amd64 root=/dev/mapper/meissa-debian ro single 
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-6.1.0-10-amd64
	}
}

### 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 ###
menuentry 'Manjaro Linux (23.0.0) (on /dev/mapper/meissa-root)' --class manjarolinux --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-092b5612-0f36-484c-aff5-ff8e023bc3ad' {
	insmod part_gpt
	insmod ext2
	search --no-floppy --fs-uuid --set=root 972e1815-893d-4b73-bce9-1b736539b4f0
	linux /vmlinuz-6.4-x86_64 root=/dev/mapper/meissa-root rw cryptdevice=UUID=1f9530e0-c897-41ee-941c-aebc26fa3f20:cryptlvm fbcon=nodefer splash quiet udev.log_priority=3
	initrd /intel-ucode.img /boot/initramfs-6.4-x86_64.img
}
submenu 'Advanced options for Manjaro Linux (23.0.0) (on /dev/mapper/meissa-root)' $menuentry_id_option 'osprober-gnulinux-advanced-092b5612-0f36-484c-aff5-ff8e023bc3ad' {
	menuentry 'Manjaro Linux (on /dev/mapper/meissa-root)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-6.4-x86_64--092b5612-0f36-484c-aff5-ff8e023bc3ad' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 972e1815-893d-4b73-bce9-1b736539b4f0
		linux /vmlinuz-6.4-x86_64 root=/dev/mapper/meissa-root rw cryptdevice=UUID=1f9530e0-c897-41ee-941c-aebc26fa3f20:cryptlvm fbcon=nodefer splash quiet udev.log_priority=3
		initrd /intel-ucode.img /boot/initramfs-6.4-x86_64.img
	}
	menuentry 'Manjaro Linux (Kernel 6.4.2-3-MANJARO x64) (on /dev/mapper/meissa-root)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-6.4-x86_64--092b5612-0f36-484c-aff5-ff8e023bc3ad' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 972e1815-893d-4b73-bce9-1b736539b4f0
		linux /vmlinuz-6.4-x86_64 root=/dev/mapper/meissa-root rw cryptdevice=UUID=1f9530e0-c897-41ee-941c-aebc26fa3f20:cryptlvm fbcon=nodefer splash quiet udev.log_priority=3
		initrd /intel-ucode.img /boot/initramfs-6.4-x86_64.img
	}
	menuentry 'Manjaro Linux (Kernel 6.1.38-1-MANJARO x64) (on /dev/mapper/meissa-root)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-6.1-x86_64--092b5612-0f36-484c-aff5-ff8e023bc3ad' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 972e1815-893d-4b73-bce9-1b736539b4f0
		linux /vmlinuz-6.1-x86_64 root=/dev/mapper/meissa-root rw cryptdevice=UUID=1f9530e0-c897-41ee-941c-aebc26fa3f20:cryptlvm fbcon=nodefer splash quiet udev.log_priority=3
		initrd /intel-ucode.img /boot/initramfs-6.1-x86_64.img
	}
}

### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
	fwsetup
}
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/35_fwupd ###
### END /etc/grub.d/35_fwupd ###

### 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 ###
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