[Bug 1891397] Re: package initramfs-tools 0.136ubuntu6.2 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1

[Mikkel Kirkgaard Nielsen]

Seems plausible that this is caused by inadequate storage on /boot.

See Df.txt;
/dev/md0           235691     183367     35848  84% /boot

See end of DpkgTerminalLog.txt;
update-initramfs: Generating /boot/initrd.img-5.4.0-42-generic
Error 24 : Write error : cannot write compressed block 
E: mkinitramfs failure cpio 141 lz4 -9 -l 24
update-initramfs: failed for /boot/initrd.img-5.4.0-42-generic with 1.
dpkg: error processing package initramfs-tools (--configure):
 installed initramfs-tools package post-installation script subprocess returned error exit status 1

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Title:
  package initramfs-tools 0.136ubuntu6.2 failed to install/upgrade:
  installed initramfs-tools package post-installation script subprocess
  returned error exit status 1

Status in initramfs-tools package in Ubuntu:
  Confirmed

Bug description:
  was doing do-release-upgrade -d  (from 18.04 to 20.04, before "proper"
  20.04.1 LTS release was released)

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: initramfs-tools 0.136ubuntu6.2
  ProcVersionSignature: Ubuntu 4.15.0-112.113-generic 4.15.18
  Uname: Linux 4.15.0-112-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.6
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Tue Aug 11 18:50:32 2020
  ErrorMessage: installed initramfs-tools package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2016-01-23 (1663 days ago)
  InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SourcePackage: initramfs-tools
  Title: package initramfs-tools 0.136ubuntu6.2 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to focal on 2020-08-11 (0 days ago)

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