[Bug 1566468] [NEW] systemd-modules-load.service: Failing due to missing module 'ib_iser'

[Christian Sarrasin]

Public bug reported:

On a number of VMs using Xenial daily builds 20160330 and 20160403, out
of the box (just after booting for the first time), the following
appears in dmesg at boot time:

systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: Failed to start Load Kernel Modules.
systemd[1]: systemd-modules-load.service: Unit entered failed state.
systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'.

The following related complaint appears in /var/log/syslog:

ubuntu systemd-modules-load[352]: Inserted module 'iscsi_tcp'
ubuntu systemd-modules-load[352]: Failed to find module 'ib_iser'

It looks like 'ib_iser' is some Mellanox-related module, which I don't
*think* is something that a stock cloudimg install should attempt to
load but I may be wrong; in any case, it's not present (nor is there any
similar whingeing) on similar VMs running off 14.04 cloudimg.

More info: http://askubuntu.com/questions/753672/xenial-beta2-systemd-
modules-load-service-failed-due-to-missing-module-ib-i

---
root at testvm4:~# lsb_release -rd
Description:	Ubuntu Xenial Xerus (development branch)
Release:	16.04
root at testvm4:~# apt policy systemd
systemd:
  Installed: 229-3ubuntu2
  Candidate: 229-3ubuntu2

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1566468

Title:
  systemd-modules-load.service: Failing due to missing module 'ib_iser'

Status in systemd package in Ubuntu:
  New

Bug description:
  On a number of VMs using Xenial daily builds 20160330 and 20160403,
  out of the box (just after booting for the first time), the following
  appears in dmesg at boot time:

  systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE
  systemd[1]: Failed to start Load Kernel Modules.
  systemd[1]: systemd-modules-load.service: Unit entered failed state.
  systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'.

  The following related complaint appears in /var/log/syslog:

  ubuntu systemd-modules-load[352]: Inserted module 'iscsi_tcp'
  ubuntu systemd-modules-load[352]: Failed to find module 'ib_iser'

  It looks like 'ib_iser' is some Mellanox-related module, which I don't
  *think* is something that a stock cloudimg install should attempt to
  load but I may be wrong; in any case, it's not present (nor is there
  any similar whingeing) on similar VMs running off 14.04 cloudimg.

  More info: http://askubuntu.com/questions/753672/xenial-beta2-systemd-
  modules-load-service-failed-due-to-missing-module-ib-i

  ---
  root at testvm4:~# lsb_release -rd
  Description:	Ubuntu Xenial Xerus (development branch)
  Release:	16.04
  root at testvm4:~# apt policy systemd
  systemd:
    Installed: 229-3ubuntu2
    Candidate: 229-3ubuntu2

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