[Bug 1515513] Re: /boot/initrd.img-*.old-dkms files left behind

[Jarno Suni]

The Bourne shell script code to remove the backups could be added in
kernel_prerm.d_dkms (or currently non-existing kernel_postrm.d_dkms) in
dkms package source, but if the package was removed, there would be no
code to remove the backups in conjunction with kernel removing. Thus,
the code could be added to kernel/postrm.d/initramfs-tools (or currently
non-existing kernel/prerm.d/initramfs-tools) in initramfs-tools package
source, too:

# This is applied from make_initrd function in dkms command, which
# creates the possible initrd backup file.
remove_initrd_backup() {
	for initrd in "initrd-$1.img" "initramfs-$1.img" "initrd.img-$1" "initrd-$1"; do
		rm -fv /boot/"${initrd}".old-dkms \
		 /boot/efi/efi/redhat/"${initrd}".old-dkms
	done
}

remove_initrd_backup "$1"

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https://bugs.launchpad.net/bugs/1515513

Title:
  /boot/initrd.img-*.old-dkms files left behind

Status in dkms package in Ubuntu:
  Confirmed
Status in initramfs-tools package in Ubuntu:
  New
Status in dkms package in Debian:
  New

Bug description:
  One notices *.old-dkms files being left behind still sitting on the
  disk after purging the related kernel. This can cause /boot to become
  full, and when it gets really bad, even sudo apt-get autoremove won't
  fix the problem - only deleting the old-dkms files manually solves the
  problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: dkms 2.2.0.3-2ubuntu3.3
  ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5
  Uname: Linux 3.19.0-28-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.7
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Thu Nov 12 08:17:10 2015
  InstallationDate: Installed on 2015-05-05 (190 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  PackageArchitecture: all
  SourcePackage: dkms
  UpgradeStatus: No upgrade log present (probably fresh install)

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