[Bug 2024901] Comment bridged from LTC Bugzilla

[bugproxy]

------- Comment From fritz at ibm.com 2025-03-25 11:40 EDT-------
Short summary of current status/conclusions:

* install on lvm without /boot seems not supported starting with Ubuntu 20.04
* Ubuntu 18.04 seems to have allowed an install (default?) with lvm with no extra /boot
* since Ubuntu 18 will not be used/installed anymore I will propose and will close this bug as not relevant anymore. I also discussed this briefly with Pawel.

------- Comment From fritz at ibm.com 2025-03-25 11:40 EDT-------
Not relevant anymore.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to s390-tools in Ubuntu.
https://bugs.launchpad.net/bugs/2024901

Title:
  [UBUNTU 20.04] Unsupported setup: Directory '/boot' is located on a
  multi-target device-mapper device

Status in Ubuntu on IBM z Systems:
  New
Status in s390-tools package in Ubuntu:
  New

Bug description:
  ---Problem Description---
  System Update did not work on Ubuntu 20.04.6 LTS. After apt update and apt full-upgrade came the following error message:
  ...
  Calling hook copymods
  /usr/share/initramfs-tools/scripts/panic/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/local-block/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/init-top/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/local-bottom/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/init-premount/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/local-top/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/init-bottom/ORDER ignored: not executable
  /usr/share/initramfs-tools/scripts/local-premount/ORDER ignored: not executable
  Building cpio /boot/initrd.img-5.4.0-150-generic.new initramfs
  Using config file '/etc/zipl.conf'
  Run /lib/s390-tools/zipl_helper.device-mapper /boot
  Error: Unsupported setup: Directory '/boot' is located on a multi-target device-mapper device
  Error: Script could not determine target parameters
  run-parts: /etc/initramfs/post-update.d//zz-zipl exited with return code 1

  But the error message is not true. Update used to work before. It is a
  KVM guest. The disk is a qcow2 file not multipath. There is no
  separate /boot partition. It is an ext4 file system.

  Filesystems:
  root at lnxproxy:/# df -h
  Filesystem                     Size  Used Avail Use% Mounted on
  /dev/mapper/vg_bistro-lv_root   12G  8.4G  2.2G  80% /
  /dev/mapper/vg_bistro-lv_home   28G   12G   15G  46% /home
  udev                           888M     0  888M   0% /dev
  tmpfs                          900M   12K  900M   1% /dev/shm
  tmpfs                          900M     0  900M   0% /sys/fs/cgroup

  
  Contact Information = ppohl at de.ibm.com 
   
  ---uname output---
  Linux lnxproxy 5.4.0-150-generic #167-Ubuntu SMP Mon May 15 17:35:14 UTC 2023 s390x s390x s390x GNU/Linux
   
  Machine Type = zKVM guest 
   
  ---System Hang---
   The system was not booting any more. I attached the disk to an other system.
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
   Run the command update-initramfs -uv.
   
  *Additional Instructions for ppohl at de.ibm.com: 
  -Post a private note with access information to the machine that the bug is occuring on.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2024901/+subscriptions