[Bug 1876562] [NEW] Upgrade to 20.04 LTS errors - mkinitramfs failure cpio

[B]

Public bug reported:

At the end of the upgrade process to 20.04 I got a message about
mkinitramfs. It said I should consider submitting a bug.

Now after a re-boot I get:

$ sudo apt install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up initramfs-tools (0.136ubuntu6) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.136ubuntu6) ...
update-initramfs: Generating /boot/initrd.img-5.4.0-28-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-5.4.0-28-generic with 1.
dpkg: error processing package initramfs-tools (--configure):
 installed initramfs-tools package post-installation script subprocess returned erro
r exit status 1
Errors were encountered while processing:
 initramfs-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)


$ lsb_release -rd
Description:	Ubuntu 20.04 LTS
Release:	20.04


$ apt-cache policy initramfs-tools
initramfs-tools:
  Installed: 0.136ubuntu6
  Candidate: 0.136ubuntu6
  Version table:
 *** 0.136ubuntu6 500
        500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu focal/main i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: initramfs-tools 0.136ubuntu6
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
Uname: Linux 5.4.0-28-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun May  3 02:11:32 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-11-16 (1994 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: initramfs-tools
UpgradeStatus: Upgraded to focal on 2020-05-03 (0 days ago)

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

** Attachment added: "screenshot of error I saw during upgrade process"
   https://bugs.launchpad.net/bugs/1876562/+attachment/5365616/+files/upgrade_error_screenshot.png

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https://bugs.launchpad.net/bugs/1876562

Title:
  Upgrade to 20.04 LTS errors - mkinitramfs failure cpio

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  At the end of the upgrade process to 20.04 I got a message about
  mkinitramfs. It said I should consider submitting a bug.

  Now after a re-boot I get:

  $ sudo apt install -f
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  1 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Setting up initramfs-tools (0.136ubuntu6) ...
  update-initramfs: deferring update (trigger activated)
  Processing triggers for initramfs-tools (0.136ubuntu6) ...
  update-initramfs: Generating /boot/initrd.img-5.4.0-28-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-5.4.0-28-generic with 1.
  dpkg: error processing package initramfs-tools (--configure):
   installed initramfs-tools package post-installation script subprocess returned erro
  r exit status 1
  Errors were encountered while processing:
   initramfs-tools
  E: Sub-process /usr/bin/dpkg returned an error code (1)


  $ lsb_release -rd
  Description:	Ubuntu 20.04 LTS
  Release:	20.04

  
  $ apt-cache policy initramfs-tools
  initramfs-tools:
    Installed: 0.136ubuntu6
    Candidate: 0.136ubuntu6
    Version table:
   *** 0.136ubuntu6 500
          500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages
          500 http://us.archive.ubuntu.com/ubuntu focal/main i386 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: initramfs-tools 0.136ubuntu6
  ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
  Uname: Linux 5.4.0-28-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sun May  3 02:11:32 2020
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-11-16 (1994 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: initramfs-tools
  UpgradeStatus: Upgraded to focal on 2020-05-03 (0 days ago)

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