lvm2 version 2.03.11-2ubuntu1 breaks initramfs

[Danial Behzadi]

I upgraded lvm2 from 2.03.07-1ubuntu4 to 2.03.11-2ubuntu1 and my initramfs broke. I had to manually rollback to the old version to be able to boot. The error was something like:

Gave up waiting for root device. Common problems:
  - Boot args (cat /proc/cmdline)
    - Check rootdelay= (did the system wait long enough?)
    - Check root= (did the system wait for the right device?)
  - Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/mapper/vgubuntu-root does not exist. Dropping to a shell!

And there was no neither my lvm lvs, nor lvm binary on initramfs.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: lvm2 2.03.07-1ubuntu4
ProcVersionSignature: Ubuntu 5.10.0-14.15-generic 5.10.11
Uname: Linux 5.10.0-14-generic x86_64
ApportVersion: 2.20.11-0ubuntu57
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Feb 13 02:42:08 2021
InstallationDate: Installed on 2019-11-01 (469 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
SourcePackage: lvm2
UpgradeStatus: No upgrade log present (probably fresh install)

[Bruno Redondi (brunor73)]

The new version of lvm sets wrong file permissions to /usr/share/initramfs-tools/hooks/lvm2
This file should have 755 permission but after the upgrade it has 644.
If you "sudo chmod 755 /usr/share/initramfs-tools/hooks/lvm2 && sudo update-initramfs -u" the system will boot correctly.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Filipe Milani de Souza (filipemilanidesouza)]

Good afternoon. I am having the least problem, but the example above did not solve my problem.

[Mario Schwalbe (schwalbe)]

Good morning. Took me an afternoon to figure this out, after no kernel was booting anymore. Still present with version 2.03.11-2ubuntu2 of the package.

[Alan Pope 🍺🐧🐱 🦄 (popey)]

I've tried the steps in comment 2, but I'm still left at (initramfs) after a reboot.

[Thomas Bechtold (toabctl)]

I also have this problem (with a LUKS & LVM). As a workaround, I did:

1) boot into live CD, start a terminal and do everything as root (sudo -i)
2) open the encrypted LUKS partition: cryptsetup luksOpen /dev/nvme0n1p3 nvme0n1p3_crypt

Note that the name (in my case "nvme0n1p3_crypt") must match the name that is in the etc/crypttab . Otherwise the later generated initramfs will not work correctly.
3) vgscan && vgchange -ay vgubuntu
4) mount /dev/vgubuntu/root /mnt
5) mount /dev/nvme0n1p2 /mnt/boot # this is my /boot partition
6) mount --bind /dev /mnt/dev && mount --bind /sys /mnt/sys && mount --bind /proc /mnt/proc
7) chroot /mnt
8) chmod 755 /usr/share/initramfs-tools/hooks/lvm2
9) update-initramfs -u

[Lukas Märdian (slyon)]

That file mode must have been lost during the last merge...
I've prepared a fix for the 664 -> 755 mode change of /usr/share/initramfs-tools/hooks/lvm2 available in this PPA (currently building):

https://launchpad.net/~slyon/+archive/ubuntu/lp1915579

Could you please check and confirm if this is fixing the problem for you?

[Alan Pope 🍺🐧🐱 🦄 (popey)]

The steps in comment #7 worked for me. Thanks @toabctl

[Mario Schwalbe (schwalbe)]

@Lukas (#8): Works.

1. Permissions are correct. This was obvious already, since `update-initramfs -v` states that it doesn't execute /usr/share/initramfs-tools/hooks/lvm2 due to insufficient permissions.
2. Unpacked the initramfs and files are included again.
3. Boots.

Thanks a lot.

[Lukas Märdian (slyon)]

Thank a lot for the confirmation @Mario!

I've uploaded the fixed package to hirsute-proposed and @xnox implemented a check in "pkgbinarymangler" to avoid such failures in the future: https://launchpad.net/ubuntu/+source/pkgbinarymangler/147

[Eugene Crosser (crosser)]

I confirm that after upgarading lvm2 to 2.03.11-2ubuntu3 from -proposed, the hook file has correct permissions, and resulting initrd is bootable.

[Aaron Johnson (acjohnson)]

2.03.11-2ubuntu3 fixed this for me as well

[Ernst Persson (ernstp)]

You really should migrate this from proposed to non-proposed asap!

[Launchpad Janitor (janitor)]

This bug was fixed in the package lvm2 - 2.03.11-2ubuntu3

---------------
lvm2 (2.03.11-2ubuntu3) hirsute; urgency=medium

  * Fix file mode of debian/initramfs-tools/lvm2/hooks/lvm2 (LP: #1915579)

 -- Lukas Märdian <email address hidden> Thu, 04 Mar 2021 11:00:58 +0100