Debian : Failed to find logical volume at boot
Thursday, 17 January 2019
|
Écrit par
Grégory Soutadé

After further investigations, I found a correct fix to this. In facts, its my configuration that is wrong. I have LUKS on LVM schema like this :

system_group (LVM)
    --> system_crypt (LUKS)
swap_group (LVM)
    --> swap_crypt (LUKS)
home_group (LVM)
    --> home_crypt (LUKS)

To be right handled, you need to declare :

In /etc/crypttab :

home--group-home_crypt UUID=349ca075-2922-4c9c-a52b-8dce587767ea /root/home.key luks
swap--group-swap_crypt UUID=4490ce3c-8700-4e90-81df-250cd3573b7c /root/swap.key luks
system--group-system_crypt UUID=95e39100-25c2-41be-829a-bd84fcb21d0a none luks

use blkid command to get right UUID values

In /etc/fstab :

/dev/mapper/system--group-system_crypt /           ext4    errors=remount-ro 0       1
UUID=6866a661-0424-472c-853e-6daa20d15d74 /boot    ext4    defaults          0       2
/dev/mapper/home--group-home_crypt /home           ext4    defaults          0       2
/dev/mapper/swap--group-swap_crypt none            swap    sw                0       0

In /etc/initramfs-tools/conf.d/resume :

UUID=none

Then, do sudo update_initramfs -u and restart.


It's the second time it happens ! After an update my Debian refuse to boot. This time, I wasn't asked for anything !!

I have an LUKS on LVM configuration. I don't use UUID in my cryptroot and Debian scripts only activate devices with it ! I need to manually add "vgchange" command to mount all devices. Unfortunately, the patched script was overwrote by update.

If it happens, follow this procedure :

  • At boot, wait for the rescue shell (~5 minutes)
  • Enter "vgchange -ay"
  • Enter "exit"

Now, you may be able to boot into your system. Then :

  • Edit /usr/share/initramfs-tools/scripts/local-top/cryptroot
  • Add "vgchange -ay" in wait_for_source() function
  • Update initramfs with "sudo update-initrmafs -u"

Safely reboot !

#
1
De
Michael Rickard
, le
08 March 2020 23:03
Vraiment!

This article really helped me out. Merci bien. My computer has worked for many years continuously, but would not boot this morning, and it was always that the logical volumes were not found. It turns out the system was renaming the drive letters (/dev/sda, /dev/sdb, ...) every time the computer booted.

The solution was to change to using UUID or PARTUUID in /etc/fstab or /etc/crypttab like you mentioned. Thank you!
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2
De
Greg
, le
10 March 2020 06:03
You're welcome !
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