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nomad
n00b
Joined: 12 Feb 2018
Posts: 8
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 Posted: Sun Jun 16, 2024 4:45 pm Post subject: LUKS enc. partition - bootloader fails to find the device |
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Good afternoon, I just ran into a problem installing Gentoo on a Dell Precision 3581 machine. I'm trying to boot the OS from a LUKS-encrypted partition, but the bootloader complains it can't find the device.
My disk layout is as follows (printed from another OS): | Code: |
NAME UUID
(... loops omitted ...)
nvme0n1
├─nvme0n1p1 382F-EF6F
├─nvme0n1p2
├─nvme0n1p3 1A5231035230E4E3
├─nvme0n1p4 50AC9F62AC9F4200
├─nvme0n1p5 9cf41608-0fe3-4c02-b121-6e4708806250
└─nvme0n1p6 bf41e4ca-3e6a-47ca-8eb9-e8b8f21ef544
└─gentoo 4lfDG7-JR4b-8bi6-uXH6-Uoo3-4Oem-jOvXKT
├─vg1-root f5e18d0c-c705-4e59-b438-dfd9bf9a3955
└─vg1-home 87f3482b-2944-4922-ae74-c8c4f0b0dbdb |
As I have to keep a Windows partition, due to my employer's policy, I'm using multi-boot scheme. There are:
1,2) Boot, EFI partition;
3) BitLocker-encrypted bootable Windows partition;
4) LUKS-encrypted bootable Ubuntu partition (just for the case that Gentoo needs some recovery, as it does now);
5) BitLocker-encrypted data storage (going to be LUKS-encrypted, hopefully);
6) LUKS-encrypted bootable Gentoo partition (the subject).
On the (6), there is a logical volume with two logical partitions: root and home. I can unlock it and mount it from running Ubuntu without issues. LUKS dump of (6):
https://pastebin.com/NPMw3hmT
Trying to make my life simple, I've chosen to use genkernel with --luks and --lvm switches, at least until the first successful boot. Genkernel output:
https://pastebin.com/E4UYss5i
It seems it creates both the kernel and the initram:
| Code: | nomad-Precision-3581 /usr/src/linux # ls /boot -la
total 142020
drwx------ 5 root root 4096 led 1 1970 .
drwxr-xr-x 22 root root 4096 úno 8 20:32 ..
-rwx------ 1 root root 77312 čen 14 21:17 amd-uc.img
-rwx------ 1 root root 251870 čen 15 17:25 config-6.6.30-gentoo-x86_64
drwx------ 7 root root 4096 čen 15 18:05 EFI
drwx------ 6 root root 4096 čen 16 14:17 grub
-rwx------ 1 root root 14264128 čen 16 14:14 initramfs-6.6.30-gentoo-x86_64.img
-rwx------ 1 root root 14381984 čen 15 17:35 initramfs-6.6.30-gentoo-x86_64.img.old
-rwx------ 1 root root 14814208 čen 16 15:01 intel-uc.img
-rwx------ 1 root root 0 čen 7 22:23 .keep
-rwx------ 1 root root 68 bře 22 23:54 _SMSTSVolumeID.7159644d-f741-45d5-ab29-0ad8aa4771ca
-rwx------ 1 root root 6385153 čen 16 15:05 System.map-6.6.30-gentoo-x86_64
-rwx------ 1 root root 6385153 čen 16 14:03 System.map-6.6.30-gentoo-x86_64.old
drwx------ 2 root root 4096 čec 11 2023 'System Volume Information'
-rwx------ 1 root root 11866624 čen 16 15:05 vmlinuz-6.6.30-gentoo-x86_64
-rwx------ 1 root root 11866624 čen 16 14:03 vmlinuz-6.6.30-gentoo-x86_64.old |
Also, using "grub-mkconfig -o /boot/grub/grub.cfg", grub finds everything, including the Windows and Ubuntu devices and adds all.
However, when I try to boot Gentoo, the bootloader can't find the LUKS device. It also says "Could not find the root in .". Noting the empty location, I thought I'm missing the encrypted device specification somewhere, but checking it, it doesn't seem so.
Additional info:
fstab: | Code: |
nomad-Precision-3581 /usr/src/linux # cat /etc/fstab
# <fs> <mountpoint> <type> <opts> <dump> <pass>
#LABEL=boot /boot ext4 defaults 1 2
#UUID=58e72203-57d1-4497-81ad-97655bd56494 / xfs defaults 0 1
#LABEL=swap none swap sw 0 0
#/dev/cdrom /mnt/cdrom auto noauto,ro 0 0
UUID=382F-EF6F /boot vfat noauto,noatime 1 2
UUID=f5e18d0c-c705-4e59-b438-dfd9bf9a3955 / ext4 defaults 0 1
UUID=87f3482b-2944-4922-ae74-c8c4f0b0dbdb /home ext4 defaults 0 1
tmpfs /tmp tmpfs size=10G 0 0 |
crypt root in grub.cfg:
| Code: | nomad-Precision-3581 /usr/src/linux # cat /boot/grub/grub.cfg | grep crypt
linux /vmlinuz-6.6.30-gentoo-x86_64 root=/dev/mapper/vg1-root ro dolvm crypt_root=UUID=bf41e4ca-3e6a-47ca-8eb9-e8b8f21ef544 root_trim=yes
linux /vmlinuz-6.6.30-gentoo-x86_64 root=/dev/mapper/vg1-root ro dolvm crypt_root=UUID=bf41e4ca-3e6a-47ca-8eb9-e8b8f21ef544 root_trim=yes
linux /vmlinuz-6.6.30-gentoo-x86_64 root=/dev/mapper/vg1-root ro single dolvm crypt_root=UUID=bf41e4ca-3e6a-47ca-8eb9-e8b8f21ef544 root_trim=yes
linux /vmlinuz-6.6.30-gentoo-x86_64.old root=/dev/mapper/vg1-root ro dolvm crypt_root=UUID=bf41e4ca-3e6a-47ca-8eb9-e8b8f21ef544 root_trim=yes
linux /vmlinuz-6.6.30-gentoo-x86_64.old root=/dev/mapper/vg1-root ro single dolvm crypt_root=UUID=bf41e4ca-3e6a-47ca-8eb9-e8b8f21ef544 root_trim=yes |
I've also installed lvm2 and cryptsetup:
| Code: | [ebuild R ] sys-fs/lvm2-2.03.22-r5::gentoo USE="lvm readline udev -sanlock (-selinux) -static -static-libs -systemd -thin -valgrind" 0 KiB
[ebuild R ] sys-fs/cryptsetup-2.6.1:0/12::gentoo USE="argon2 nls openssl udev -fips -gcrypt -kernel -nettle -pwquality -ssh -static -static-libs -test -urandom" 0 KiB
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... and added them to boot. List of services at runlevel boot: https://pastebin.com/nPtUmGxc
.config:
https://pastebin.com/6PwK50QN
I'm somehow out of ideas. I would appreciate some. Thanks in advance. |
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sublogic
Apprentice
Joined: 21 Mar 2022
Posts: 269
Location: Pennsylvania, USA
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| Posted: Mon Jun 17, 2024 1:35 am Post subject: |
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Since you used genkernel, I would suggest adding debug to your kernel command line in grub, to get a rescue shell. See if you can decrypt the LUKS partition, find the logical volumes and mount the root from there.
(You get three pauses to a rescue shell. Keep typing exit to continue.) |
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sMueggli
Guru
Joined: 03 Sep 2022
Posts: 496
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| Posted: Mon Jun 17, 2024 4:31 pm Post subject: |
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Are you asked for the LUKS passphrase when you boot Gentoo? Or not?
Are you using the ESP only for Gentoo as /boot or is also Ubuntu using the ESP as /boot? Can you share /boot/grub/grub.cfg? |
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Installing Gentoo
