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#1 2019-09-16 21:27:54

Gotek
Member
Registered: 2019-05-08
Posts: 3

[SOLVED] [btrfs+luks] systemd not finding root filesystem

After following most of the steps in both:

https://wiki.archlinux.org/index.php/Installation_guide
https://wiki.archlinux.org/index.php/Dm … _with_swap

With the only exception being the swap configuration, as I don't setup any swap.

I get the following output from systemd:

Starting version 243.0-1-arch
ERROR: device 'UUID=8753ee71-2027-4103-b675-e04184157b22' not found. Skipping fsck.
mount: /new_root: can't find UUID=8753ee71-2027-4103-b675-e04184157b22.
sh: can't access tty; job control turned off

A regular btrfs install without luks works fine.

Note: I am doing this after suddenly my whole btrfs root fs turned readonly mode with over 20% of disk space left.

Last edited by Gotek (2019-09-17 00:14:23)

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#2 2019-09-16 21:47:10

jasonwryan
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From: .nz
Registered: 2009-05-09
Posts: 28,135
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Re: [SOLVED] [btrfs+luks] systemd not finding root filesystem

Without details of your partition table, boot loader/manager configs etc, no-one can offer anything other than handwavy motions...

Please see How To Ask Questions The Smart Way.


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#3 2019-09-16 22:16:46

Gotek
Member
Registered: 2019-05-08
Posts: 3

Re: [SOLVED] [btrfs+luks] systemd not finding root filesystem

Well, my partition table was

sda1 200M EF00 fat32 efi partition
sda2 rest-of-the-disk 8300 luks container, btrfs root partition

The only changes made to /etc/default/grub were taken from https://wiki.archlinux.org/index.php/Dm … _with_swap

...which was the problem in the end. I looked into the /etc/fstab, /etc/default/grub, and /etc/mkinitcpio.conf from my backups to compare with the wiki article/current setup. And my /etc/default/grub from the backups had the following line different:

GRUB_CMDLINE_LINUX="cryptdevice=UUID=a5605a35-d40d-4cb1-b754-3d6e796e77f5:cryptroot"

Which is the UUID of sda2, *not*  the mapped /dev/mapper/cryptroot. With that line, with the correct UUID, added to /etc/default/grub of the current setup it booted promplty.

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#4 2019-09-16 22:35:56

jasonwryan
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From: .nz
Registered: 2009-05-09
Posts: 28,135
Website

Re: [SOLVED] [btrfs+luks] systemd not finding root filesystem

Please remember to mark your thread as [Solved] by editing your first post and prepending it to the title.


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