** Package changed: linux (Ubuntu) => subiquity (Ubuntu)
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1893775
Title:
[UBUNTU 20.04.1] Failure to install Ubuntu 20.04.1 as KVM guest on
DASD
Status in Ubuntu on IBM z Systems:
New
Status in subiquity package in Ubuntu:
New
Bug description:
---Problem Description---
Failure to install Ubuntu 20.04.1 as KVM guest on DASD
---uname output---
Linux version 5.4.0-42-generic (buildd@bos02-s390x-003) (gcc version 9.3.0
(Ubuntu 9.3.0-10ubuntu2)) #46-Ubuntu SMP Fri Jul 10 00:21:32 UTC 2020 (Ubuntu
5.4.0-42.46-generic 5.4.44)
Machine Type = 3096-703
---boot type---
CDROM / ISO image
---Install repository type---
Internet repository
---Install repository Location---
ports.ubunut.com
---Point of failure---
Other failure during installation (stage 1)
I tried to install an Ubuntu 20.04.1 guest from ISO which failed.
Steps to reproduce.
1. Boot from ISO to start installer, in my case I used virt-install, but a
manually defined libvirt domain has the same issue:
$ virt-install --name focal.1 --memory 2048 --disk
path=/dev/disk/by-path/ccw-0.0.a03f --cdrom ubuntu-20.04.1-live-server-s390x.iso
2. On the installer screen, stay in simple mode and accept all
defaults
3. Shortly after a error pop-up appears, saying the installation has failed.
Opening the log I see:
...
storage:
config:
- {ptable: gpt, path: /dev/vda, wipe: superblock-recursive, preserve:
false, name: '',
grub_device: false, type: disk, id: disk-vda}
- {device: disk-vda, size: 22153265152, wipe: superblock, flag: '',
number: 1, preserve: false,
type: partition, id: partition-0}
- {fstype: ext4, volume: partition-0, preserve: false, type: format, id:
format-0}
- {device: format-0, path: /, type: mount, id: mount-0}
version: 1
...
An error occured handling 'format-0': OSError - could not get path to dev
from kname: vda1
finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL:
configuring format: format-0
TIMED BLOCK_META: 1.942
finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: curtin
command block-meta
It seems that the new installation procedure isn't correctly detecting
virtio-attached DASDs and tries to handle them like SCSI disks (gpt label,
...). This is a regression compared to the debian-installer and prevents the
installation of Ubuntu 20.04 KVM guests on DASD.
I cross-checked by running the installation on a QCOW2 image, which
succeeded without problems.
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