[Bug 1946513] Re: package initramfs-tools 0.140ubuntu6 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1

[Simon J Mudd]

I have what looks to be a similar issue. I suspect the boot partition
may be the problem:

user at host:~$ df -h /boot
Filesystem                Size  Used Avail Use% Mounted on
bpool/BOOT/ubuntu_ykzcyk  295M  289M  5,5M  99% /boot

user at host:~$ mount | grep -w /
rpool/ROOT/ubuntu_ykzcyk on / type zfs (rw,relatime,xattr,posixacl)

This is with a ZFS root and boot partition.

user at host:~$ zpool list
NAME      SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
bpool    1.88G  1.74G   133M        -         -    56%    93%  1.00x    ONLINE  -
rpool     920G  38.7G   881G        -         -     8%     4%  1.00x    ONLINE  -

user at host:~$ df -h | grep boot
bpool/BOOT/ubuntu_ykzcyk                          295M  289M  5,5M  99% /boot
/dev/nvme0n1p1                                    511M   15M  497M   3% /boot/efi
user at host:~$

I found a snapshot in the boot dataset and removed it but free space hasn't dropped much.
Perhaps this extra information helps?

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Title:
  package initramfs-tools 0.140ubuntu6 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:
  I don't know

  ProblemType: Package
  DistroRelease: Ubuntu 21.10
  Package: initramfs-tools 0.140ubuntu6
  ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13
  Uname: Linux 5.13.0-16-generic x86_64
  ApportVersion: 2.20.11-0ubuntu70
  Architecture: amd64
  CasperMD5CheckResult: pass
  Date: Fri Oct  8 12:36:07 2021
  ErrorMessage: installed initramfs-tools package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2021-10-08 (0 days ago)
  InstallationMedia: Ubuntu 21.10 "Impish Indri" - Beta amd64 (20210922)
  PackageArchitecture: all
  Python3Details: /usr/bin/python3.9, Python 3.9.7, python3-minimal, 3.9.4-1build1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.20.9ubuntu2
   apt  2.3.9
  SourcePackage: initramfs-tools
  Title: package initramfs-tools 0.140ubuntu6 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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