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rogerroger
n00b
Joined: 24 May 2023
Posts: 2
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 Posted: Thu May 25, 2023 12:22 pm Post subject: Dracut mounting wrong btrfs subvolume to /sysroot |
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Installed Gentoo with systemd and distkernel bin recently and tried to make a single efi file with dracut.
Used the following command to create the efi executable
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nebula / # time for kver in /lib/modules/*; do dracut -f --uefi --kver "${kver##*/}"; done
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My dracut config look as follows
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❯ cat etc/dracut.conf.d/flags.conf
kernel_cmdline="rootflags=subvol=@gentoo"
compress="lz4"
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System is installed on nvme0n1p3 LUKS encrypted volume.
On booting it successfully detects my root partition and asks for the passphrase, correctly unlocks it as /dev/mapper/root, and somewhat correctly mounts that to /sysroot (missing the correct subvolume).
So instead of the Gentoo filesystem being present at /sysroot it's the subvolumes I've created and dracut panics.
So far I've tried adding different kernel parameters such as rd.luks.name, cryptdevice or root but nothing made a difference.
pastebin of rdosreport
Any help is much appreciated. |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Fri May 26, 2023 10:59 am Post subject: |
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Welcome to Gentoo Forums!
Do you use grub also?
If you do plz have
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GRUB_CMDLINE_LINUX="cryptdevice=UUID=xxxxxxxxxxxxxxx:root root=/dev/mapper/root rootflags=subvolume=@gentoo rootfstype=btrfs"
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Secondly edit
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/etc/crypttab---->>>>
root UUID=xxxxxxxxxxxxxxxxx none initramfs,luks
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Then
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rc-update add dmcrypt boot
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Remove
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kernel_cmdline="rootflags=subvol=@gentoo"
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from flags.conf
Then update grub and initramfs.
_________________
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rogerroger
n00b
Joined: 24 May 2023
Posts: 2
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| Posted: Fri May 26, 2023 2:47 pm Post subject: |
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I don't use GRUB. I wanted to make use of GPT partition automounting which GRUB doesn't support.
I added the additional cmdline options, however none of them should be necessary as automounting takes care of that.
Booting with the new parameters didn't make a difference.
Since I'm trying to unlock my encrypted root partition I need to unlock it in early userspace and not late userspace /etc/crypttab should get ignored (if I understood Dm-crypt correctly). But the root partition gets properly unlocked so it shouldn't matter anyway.
Lastly I'm running systemd, so there's no dmcrypt module I could enable for open-rc. I think the systemd equivalent is systemd-cryptsetup, which can't be used for the root volume.
I have Archlinux installed on a separate btrfs subvolume (/@), and the dracut image arch generates works. Comparing the logs nothing stood out to me that could cause this issue.
Archlinux log
Gentoo log |
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Installing Gentoo
