[Bug 1878378] Re: add_mountroot_fail_hook uses wrong target name

[Ubuntu Foundations Team Bug Bot]

The attachment "Proposed fix" seems to be a patch.  If it isn't, please
remove the "patch" flag from the attachment, remove the "patch" tag, and
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** Tags added: patch

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https://bugs.launchpad.net/bugs/1878378

Title:
  add_mountroot_fail_hook uses wrong target name

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  Upon boot of a system that uses LVM2 you get the message:

  ln: /tmp/mountroot-fail-hooks.d//scripts/init-premount/lvm2: No such
  file or directory

  This is because the script /usr/share/initramfs-tools/scripts/init-
  premount/lvm2 uses the add_mountroot_fail_hook function from
  /usr/share/initramfs-tools/scripts/functions (which is sources right
  before), but this function contains a bug that takes the full path of
  the source script instead of the given argument as name for the
  target.

  Version of Ubuntu: 20.04 LTS
  Version of initramfs-tools: 0.136ubuntu6

  For a live installation, this may be fixed with (all on one line):

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

  and verified by checking that this message now disappears on next
  boot:

  sudo journalctl -b | grep mountroot-fail-hooks

  A proposed patch for the source distribution is attached.

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