Miserably trying to rebuild my initramfs, help needed :)
from TheHobbyist@lemmy.zip to linux@lemmy.ml on 29 Nov 21:34
https://lemmy.zip/post/27152897

Hi folks,

I had first written about my attempts here: lemmy.zip/post/24041939

I got to learn a lot thanks to some very helpful lemmyist (thank you @chameleon@fedia.io !), but I ran into a wall and tried to persist alone for a while.

While my initial goal is still the same, I’m right now focusing on seeing whether I can rebuild an initramfs myself, excluding any customizations.

My setup is the following:

When booting using the default initramfs:

mytestalpine:~# lsblk -o NAME,FSTYPE,FSVER,LABEL,UUID,FSAVAIL,FSUSE%,MOUNTPOINTS
NAME     FSTYPE      FSVER LABEL UUID                                 FSAVAIL FSUSE% MOUNTPOINTS
sda                                                                                  
├─sda1   vfat                    515E-70E4                             238.9M    20% /boot
├─sda2   swap                    667a53d2-dc82-4d2a-a121-63a75da51c24                [SWAP]
└─sda3   crypto_LUKS             73cada8c-5885-4334-b72b-b09b7f919d66                
  └─root ext4                    8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18      5G     3% /
sr0                                                                                  
mytestalpine:~# blkid
/dev/sda3: UUID="73cada8c-5885-4334-b72b-b09b7f919d66" TYPE="crypto_LUKS" PARTUUID="a900120b-4b78-4164-add8-f6a88eadb219"
/dev/sda1: UUID="515E-70E4" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="83a340a7-ec05-4452-a775-178b5d3ea96e"
/dev/sda2: UUID="667a53d2-dc82-4d2a-a121-63a75da51c24" TYPE="swap" PARTUUID="cdddf0ec-5b8d-448f-a1c6-c9a97af06709"
/dev/mapper/root: UUID="8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18" BLOCK_SIZE="4096" TYPE="ext4"

Where I’m at:

add_dracutmodules+=" crypt dm rootfs-block "
kernel_cmdline+=" rd.luks.uuid=luks-73cada8c-5885-4334-b72b-b09b7f919d66 "

GRUB_TIMEOUT=2
GRUB_DISABLE_SUBMENU=y
GRUB_DISABLE_RECOVERY=true
GRUB_CMDLINE_LINUX_DEFAULT="modules=sd-mod,usb-storage,ext4 cryptroot=UUID=73cada8c-5885-4334-b72b-b09b7f919d66 cryptdm=root rootfstype=ext4"

mytestalpine:~# cat /etc/grub.d/40_custom
#!/bin/sh
exec tail -n +3 $0
# 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.

menuentry 'Dracut entry' --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-lts-advanced-8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18' {
	load_video
	insmod gzio
	insmod part_gpt
	insmod fat
	set root='hd0,gpt1'

	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  515E-70E4
	else
	  search --no-floppy --fs-uuid --set=root 515E-70E4
	fi

	#search --no-floppy --fs-uuid --set=root 515E-70E4
	echo	'Loading Linux lts ...'
	linux	/vmlinuz-lts root=UUID=8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18 ro  modules=sd-mod,usb-storage,ext4 cryptroot=UUID=73cada8c-5885-4334-b72b-b09b7f919d66 cryptdm=root rootfstype=ext4 rd.shell rd.debug log_buf_len=1M 
	echo	'Loading initial ramdisk ...'
	initrd	/initramfs-6.6.58-0-lts.img
}

This was closely matched to the original boot entry.

Generating grub configuration file ...
Found linux image: /boot/vmlinuz-lts
Found initrd image: /boot/initramfs-lts
Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.
Adding boot menu entry for UEFI Firmware Settings ...
done

Loading Linux lts ...
Loading initial ramdisk ...
_
EFI stub: Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path

I’ve tried looking up the message but nothing seems to be giving hints at how I can fix it.

Is there something visibly wrong with what I’m doing? I’ve removed the quiet parameter and added debug flags to the kernel parameters but I’m doing able to get more information from the failed boot… Thanks!

Below is my entire grub conf:

/boot/grub/grub.cfg

mytestalpine:~# cat /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 ### 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$feature_all_video_module = xy ]; then insmod all_video else insmod efi_gop insmod efi_uga insmod ieee1275_fb insmod vbe insmod vga insmod video_bochs insmod video_cirrus fi } if loadfont unicode ; then set gfxmode=auto load_video insmod gfxterm fi terminal_output gfxterm if [ x$feature_timeout_style = xy ] ; then set timeout_style=menu set timeout=2 # Fallback normal timeout code in case the timeout_style feature is # unavailable. else set timeout=2 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/10_linux ### menuentry ‘Alpine Linux v3.20, with Linux lts’ --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-lts-advanced-8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18’ { load_video insmod gzio insmod part_gpt insmod fat set root=‘hd0,gpt1’ if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 515E-70E4 else search --no-floppy --fs-uuid --set=root 515E-70E4 fi echo ‘Loading Linux lts …’ linux /vmlinuz-lts root=UUID=8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18 ro modules=sd-mod,usb-storage,ext4 cryptroot=UUID=73cada8c-5885-4334-b72b-b09b7f919d66 cryptdm=root rootfstype=ext4 echo ‘Loading initial ramdisk …’ initrd /initramfs-lts } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/25_bli ### if [ “$grub_platform” = “efi” ]; then insmod bli fi ### END /etc/grub.d/25_bli ### ### BEGIN /etc/grub.d/30_os-prober ### ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/30_uefi-firmware ### if [ “$grub_platform” = “efi” ]; then menuentry ‘UEFI Firmware Settings’ $menuentry_id_option ‘uefi-firmware’ { fwsetup } fi ### END /etc/grub.d/30_uefi-firmware ### ### 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. menuentry ‘Dracut entry’ --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-lts-advanced-8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18’ { load_video insmod gzio insmod part_gpt insmod fat set root=‘hd0,gpt1’ if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 515E-70E4 else search --no-floppy --fs-uuid --set=root 515E-70E4 fi #search --no-floppy --fs-uuid --set=root 515E-70E4 echo ‘Loading Linux lts …’ linux /vmlinuz-lts root=UUID=8613c4fe-dbc2-4a4e-9d41-3e7eaa8acf18 ro modules=sd-mod,usb-storage,ext4 cryptroot=UUID=73cada8c-5885-4334-b72b-b09b7f919d66 cryptdm=root rootfstype=ext4 rd.shell rd.debug log_buf_len=1M echo ‘Loading initial ramdisk …’ initrd /initramfs-6.6.58-0-lts.img } ### 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 ###

Edit: corrected tagged user & formatting

#linux

threaded - newest

TheHobbyist@lemmy.zip on 29 Nov 21:38 next collapse

I explored whether this was a permission issue, but the permission is the same on the default and my initramfs:

mytestalpine:~# ls -l /boot/initramfs-*
-rwxr-xr-x 1 root root 10734241 Nov 27 22:56 /boot/initramfs-6.6.58-0-lts.img
-rwxr-xr-x 1 root root 17941160 Nov  3 17:39 /boot/initramfs-lts
mvirts@lemmy.world on 02 Dec 09:04 next collapse

If it hangs after grub’s EFI loader I would check the EFI grub install… But I don’t know luks so no idea what to look for.

TheHobbyist@lemmy.zip on 02 Dec 12:05 collapse

Thanks for the reply! Can you tell me more about what you mean with “check the efi grub install”?

Edit: to be clear, I have a vanilla initramfs booting properly, which is the one automatically built. I’m just trying to replicate it myself.

mvirts@lemmy.world on 02 Dec 14:12 collapse

I was thinking grub may be unable to find the correct initrd for some reason, like missing grub modules. This doesn’t make sense since it can boot your vanilla image and doesn’t print an error when booting your image.

mvirts@lemmy.world on 02 Dec 14:23 collapse

Have you read through this thread? forums.gentoo.org/viewtopic-p-8682734.html

Seems relevant by the first few posts.

TheHobbyist@lemmy.zip on 03 Dec 09:45 collapse

Thank you, I will dig into this to see if there’s something I’m missing, but I did use the same resources the poster did, but the thread may provide more information.