LUKS root Grub Falls to shell

[annubis]

Καλημέρα!

Είπα να δοκιμάσω (μετά απο 5 χρόνια απουσίας απο linux ) σε ενα virtual machine να εγκαταστήσω gentoo με encrypted root partition .
Ακολουθώντας διάφορα tutorials έχω φτιάξει τα εξής:

partition scheme fdisk /dev/sda -l

Device       Start      End  Sectors  Size Type
/dev/sda1     2048    34815    32768   16M BIOS boot
/dev/sda2    34816   649215   614400  300M EFI System
/dev/sda3   649216  3106815  2457600  1.2G Linux swap
/dev/sda4  3108864 16775167 13666304  6.5G Linux LVM

parted

Model: ATA VBOX HARDDISK (scsi)
Disk /dev/sda: 8590MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name       Flags
 1      1049kB  17.8MB  16.8MB                  bios_grub  bios_grub
 2      17.8MB  332MB   315MB   ext2            boot       boot, esp
 3      332MB   1591MB  1258MB  linux-swap(v1)
 4      1592MB  8589MB  6997MB                  gentoolvm  lvm

blkid

/dev/loop0: TYPE="squashfs"
/dev/sda2: LABEL="boot" UUID="63241296-665a-40c8-b6ae-af53bb6742ab" TYPE="ext2" PARTLABEL="boot" PARTUUID="2c51cea9-1abe-4784-9f47-8a4ee9b24f71"
/dev/sda3: UUID="d47cb4cd-8d4c-4bc0-8a48-2bf0038e35ce" TYPE="swap" PARTUUID="ea5d81d2-3cfb-40cd-b1f7-b659f6bfc8de"
/dev/sda4: UUID="d7ce53b9-e94c-46d8-b5c2-d4a3f752ed8c" TYPE="crypto_LUKS" PARTLABEL="gentoolvm" PARTUUID="79923732-9a0b-47d0-9b53-305afe8eb60d"
/dev/sr0: UUID="2020-02-10-08-47-28-10" LABEL="Gentoo amd64 20200209T214502Z" TYPE="iso9660" PTUUID="485200fe" PTTYPE="dos"
/dev/mapper/crypto_LUKS: UUID="fTaMB0-nhr8-loEM-SXMZ-8vFR-SKVV-NElT0B" TYPE="LVM2_member"
/dev/mapper/gentoo-root: UUID="aefd47dc-50f9-42c6-a934-1f9672193d1d" TYPE="ext4"
/dev/sda1: PARTLABEL="bios_grub" PARTUUID="4ba8fd44-700e-4234-b149-a4441d851c4e"

lsblk

NAME              MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
loop0               7:0    0 314.3M  1 loop  
sda                 8:0    0     8G  0 disk  
├─sda1              8:1    0    16M  0 part  
├─sda2              8:2    0   300M  0 part  
├─sda3              8:3    0   1.2G  0 part  
└─sda4              8:4    0   6.5G  0 part  
  └─crypto_LUKS   252:0    0   6.5G  0 crypt 
    └─gentoo-root 252:1    0   6.5G  0 lvm   /
sr0                11:0    1   348M  0 rom   
sr1                11:1    1  1024M  0 rom

fstab

UUID=63241296-665a-40c8-b6ae-af53bb6742ab /boot ext2 noatime 1 2
UUID=d47cb4cd-8d4c-4bc0-8a48-2bf0038e35ce none swap sw 0 0 
UUID=aefd47dc-50f9-42c6-a934-1f9672193d1d / ext4 defaults 0 1

/etc/default/grub.cfg

# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
#
# To populate all changes in this file you need to regenerate your
# grub configuration file afterwards:
#     'grub-mkconfig -o /boot/grub/grub.cfg'
#
# See the grub info page for documentation on possible variables and
# their associated values.

GRUB_DISTRIBUTOR="Gentoo"

# Default menu entry
#GRUB_DEFAULT=0

# Boot the default entry this many seconds after the menu is displayed
GRUB_TIMEOUT=5
#GRUB_TIMEOUT_STYLE=menu

GRUB_PRELOAD_MODULES=lvm
GRUB_ENABLE_CRYPTODISK=y
GRUB_DEVICE=/dev/ram0
GRUB_CMDLINE_LINK="crypt_root=/dev/sda4 real_root=/dev/mapper/gentoo-root rootfstype=ext4 dolvm quiet"
# Append parameters to the linux kernel command line
#GRUB_CMDLINE_LINUX=""
#
# Examples:
#
# Boot with network interface renaming disabled
# GRUB_CMDLINE_LINUX="net.ifnames=0"
#
# Boot with systemd instead of sysvinit (openrc)
# GRUB_CMDLINE_LINUX="init=/usr/lib/systemd/systemd"

# Append parameters to the linux kernel command line for non-recovery entries
#GRUB_CMDLINE_LINUX_DEFAULT=""

# 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

# Set to 'text' to force the Linux kernel to boot in normal text
# mode, 'keep' to preserve the graphics mode set using
# 'GRUB_GFXMODE', 'WIDTHxHEIGHT'['xDEPTH'] to set a particular
# graphics mode, or a sequence of these separated by commas or
# semicolons to try several modes in sequence.
#GRUB_GFXPAYLOAD_LINUX=

# 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

# Uncomment to disable generation of the submenu and put all choices on
# the top-level menu.
# Besides the visual affect of no sub menu, this makes navigation of the
# menu easier for a user who can't see the screen.
#GRUB_DISABLE_SUBMENU=y

# Uncomment to play a tone when the main menu is displayed.
# This is useful, for example, to allow users who can't see the screen
# to know when they can make a choice on the menu.
#GRUB_INIT_TUNE="60 800 1"

/boot/grubgrub.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 lvm
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$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod lvm
insmod ext2
set root='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'  aefd47dc-50f9-42c6-a934-1f9672193d1d
else
  search --no-floppy --fs-uuid --set=root aefd47dc-50f9-42c6-a934-1f9672193d1d
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=en_US
  insmod gettext
fi
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 'Gentoo GNU/Linux' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-/dev/ram0' {
	load_video
	if [ "x$grub_platform" = xefi ]; then
		set gfxpayload=keep
	fi
	insmod gzio
	insmod lvm
	insmod ext2
	set root='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'  aefd47dc-50f9-42c6-a934-1f9672193d1d
	else
	  search --no-floppy --fs-uuid --set=root aefd47dc-50f9-42c6-a934-1f9672193d1d
	fi
	echo	'Loading Linux 4.19.97-gentoo ...'
	linux	/boot/vmlinuz-4.19.97-gentoo root=UUID=aefd47dc-50f9-42c6-a934-1f9672193d1d ro  
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initramfs-4.19.97-gentoo.img
}
submenu 'Advanced options for Gentoo GNU/Linux' $menuentry_id_option 'gnulinux-advanced-/dev/ram0' {
	menuentry 'Gentoo GNU/Linux, with Linux 4.19.97-gentoo' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.19.97-gentoo-advanced-/dev/ram0' {
		load_video
		if [ "x$grub_platform" = xefi ]; then
			set gfxpayload=keep
		fi
		insmod gzio
		insmod lvm
		insmod ext2
		set root='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'  aefd47dc-50f9-42c6-a934-1f9672193d1d
		else
		  search --no-floppy --fs-uuid --set=root aefd47dc-50f9-42c6-a934-1f9672193d1d
		fi
		echo	'Loading Linux 4.19.97-gentoo ...'
		linux	/boot/vmlinuz-4.19.97-gentoo root=UUID=aefd47dc-50f9-42c6-a934-1f9672193d1d ro  
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initramfs-4.19.97-gentoo.img
	}
	menuentry 'Gentoo GNU/Linux, with Linux 4.19.97-gentoo (recovery mode)' --class gentoo --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.19.97-gentoo-recovery-/dev/ram0' {
		load_video
		if [ "x$grub_platform" = xefi ]; then
			set gfxpayload=keep
		fi
		insmod gzio
		insmod lvm
		insmod ext2
		set root='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint='lvmid/owYkc3-N8V4-RaCo-gcoo-CbV6-KFu9-3diV10/erWg3P-z9dH-RD4Z-AMtv-peIV-uAl5-rNNsLQ'  aefd47dc-50f9-42c6-a934-1f9672193d1d
		else
		  search --no-floppy --fs-uuid --set=root aefd47dc-50f9-42c6-a934-1f9672193d1d
		fi
		echo	'Loading Linux 4.19.97-gentoo ...'
		linux	/boot/vmlinuz-4.19.97-gentoo root=UUID=aefd47dc-50f9-42c6-a934-1f9672193d1d ro single 
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initramfs-4.19.97-gentoo.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 ###

grub-install

grub-install --modules="linux crypto search_fs_uuid luks lvm" /dev/sda

initramfs generation

genkernel --lvm --mdadm --luks --install initramfs

Επισης βγάζει κάποια warnings οτι δεν υπάρχει το lvmetad
Τώρα όταν κάνω boot με πετάει απευθείας σε grub shell. Τι μπορεί να φταίει ;

Ευχαριστώ!