add_mountroot_fail_hook is either buggy or not used properly, causes boot problems

[Psy[H[]]

ln -s "$0" /tmp/mountroot-fail-hooks.d/"$0" makes no sense when $0 is a full path.

in /usr/share/initramfs-tools/scripts/init-premount/lvm2 there is this line:

  add_mountroot_fail_hook "20-lvm2"

It tries to link /scripts/init-premount/lvm2 to /tmp/mountroot-fail-hooks.d//scripts/init-premount/lvm2, and the argument "20-lvm2" is discarded.

This causes boot problems.

Solution?

ln -s "$0" /tmp/mountroot-fail-hooks.d/"$(basename "${1:-$0}")"

[Ian Johnson (anonymouse67)]

Hi, can you explain more what the problem is that you see with this and more details on how to reproduce the issue?

[Oliver Grawert (ogra)]

also ... i highly doubt that support for lvm2 is planned in UbuntuCore 20, this bug might rather be for the initramfs-tools package itself ...

[Roland Kaufmann (rlndkfmn+launchpad)]

I also get this problem, on a minimal Ubuntu installed on an LVM-managed disk. However, I believe that the fix should be:

sudo sed -i 's,\(ln -s "\$0" /tmp/mountroot-fail-hooks\.d/\)"\$0",\1"\$1",' /usr/share/initramfs-tools/scripts/functions

i.e, that the path in /tmp/mountroot-fail-hooks should be given by the parameter to the funcion. Apply this fix with (notice that bug 1835660 may now occur):

sudo update-initramfs -u

You can verify that the message goes away with

sudo journalctl -b | grep mountroot-fail-hooks

after next reboot.

[Roland Kaufmann (rlndkfmn+launchpad)]

I have reported this to the initramfs-tools package: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1878378

[Oliver Grawert (ogra)]

pleas use 1878378 for further discussion of that issue, there is no relation at all to initramfs-tools-ubuntu-core

[Compiler (pranav.bhattarai)]

I just decided to do some update/upgrade in Ubuntu 20.04, and this is what I get. What's wrong here?

#help

(Meanwhile, I can only log in to my computer only in CLI mode.)

[Ian Johnson (anonymouse67)]

Hi Pranav, the bug you are experiencing seems to be the same as this one: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1878378

Can you please comment there instead? This current bug report will not be looked at by anyone as it is invalid.