This is a bug in the open-iscsi package in xenial and bionic. That
package installs this file: /lib/modules-load.d/open-iscsi.conf

Which contains the following:
iscsi_tcp
ib_iser

This causes systemd to always try and load the iscsi_tcp and ib_iser
modules on boot. In eoan, the open-iscsi package doesn't do this;
there's no /lib/modules-load.d/open-iscsi.conf file in the eoan cloud
image. An update to xenial/bionic open-iscsi packages to match the
behavior of eoan's open-iscsi package should resolve this I think.

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https://bugs.launchpad.net/bugs/1888000

Title:
  Bionic/Xenial minimal cloud image: failed to apply load kernel module

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Overview
  ---
  It appears the Bionic and Xenial minimal images have always shipped with a 
failing systemd unit: "systemd-modules-load.service" with the error "Failed to 
find module 'ib_iser'"

  Expected results
  ---
  $ sudo systemctl list-units --failed --no-legend
  # Return no failed units

  Actual results
  ---
  $ sudo systemctl list-units --failed --no-legend
  systemd-sysctl.service loaded failed failed Apply Kernel Variables
  # cloud-config.service may show up failing to setup the timezone...

  From the journal:
  Jul 17 17:48:27 ubuntu systemd-modules-load[98]: Module 'iscsi_tcp' is builtin
  Jul 17 17:48:27 ubuntu systemd-modules-load[98]: Failed to find module 
'ib_iser'
  Jul 17 17:48:27 ubuntu systemd-sysctl[106]: Couldn't write '176' to 
'kernel/sysrq', ignoring: No such file or directory
  Jul 17 17:48:27 ubuntu systemd-sysctl[106]: Couldn't write 'fq_codel' to 
'net/core/default_qdisc', ignoring: No such file or directory

  Steps to reproduce
  ---
  $ wget 
https://cloud-images.ubuntu.com/daily/server/minimal/releases/bionic/release/ubuntu-18.04-minimal-cloudimg-amd64.img
  $ multipass launch file:///$(pwd)/ubuntu-18.04-minimal-cloudimg-amd64.img 
--name=bionic-minimal
  $ multipass exec bionic-minimal -- sudo systemctl list-units --failed 
--no-legend

  
  ---
  ProblemType: Bug
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 
2: ls: cannot access '/dev/snd/': No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.15
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
'arecord'
  AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser': 
'fuser'
  CRDA: N/A
  DistroRelease: Ubuntu 18.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  Lspci: Error: [Errno 2] No such file or directory: 'lspci': 'lspci'
  Lsusb: Error: [Errno 2] No such file or directory: 'lsusb': 'lsusb'
  MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-1069-kvm 
root=PARTUUID=ffb7214d-c783-45ed-b736-278d4ee0cac0 ro console=tty1 console=ttyS0
  ProcVersionSignature: User Name 4.15.0-1069.70-kvm 4.15.18
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-1069-kvm N/A
   linux-backports-modules-4.15.0-1069-kvm  N/A
   linux-firmware                           N/A
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  bionic uec-images
  Uname: Linux 4.15.0-1069-kvm x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dialout dip floppy lxd netdev plugdev sudo video
  _MarkForUpload: True
  dmi.bios.date: 04/01/2014
  dmi.bios.vendor: SeaBIOS
  dmi.bios.version: 1.10.2-1ubuntu1
  dmi.chassis.type: 1
  dmi.chassis.vendor: QEMU
  dmi.chassis.version: pc-i440fx-bionic
  dmi.modalias: 
dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic:
  dmi.product.name: Standard PC (i440FX + PIIX, 1996)
  dmi.product.version: pc-i440fx-bionic
  dmi.sys.vendor: QEMU

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