[Bug 1734409] Re: systemd-sysctl: exit gracefully on EPERM/EACCESS

[Dimitri John Ledkov]

root at systemd-sru-xenial:~# systemctl is-failed systemd-sysctl
failed
root at systemd-sru-xenial:~# dpkg-query -W systemd
systemd	229-4ubuntu21.1

root at systemd-sru-xenial:~# dpkg-query -W systemd
systemd	229-4ubuntu21.2
root at systemd-sru-xenial:~# systemctl restart systemd-sysctl
root at systemd-sru-xenial:~# systemctl is-failed systemd-sysctl
active

** Tags removed: verification-needed verification-needed-xenial
** Tags added: verification-done verification-done-xenial

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https://bugs.launchpad.net/bugs/1734409

Title:
  systemd-sysctl: exit gracefully on EPERM/EACCESS

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Fix Committed

Bug description:
  [Impact]

   * systemd-sysctl service fails in containers, due to read-only sysfs,
  which is normal.

  [Test Case]

   * Ensure systemd-sysctl is successful in containers, e.g. lxc & lxd

  [Regression Potential]

   * The application of sysctls fails anyway, but at least in this case
  false-errors are not reported and the container doesn't enter
  "degraded" state without a good reason.

  [Other Info]
   
   * Original bug report

  Hi everyone,

  systemd-sysctl in systemd versions prior to 232 will exit with FAILED
  when not being able to apply kernel variables. In containers it should
  simply move on and exit with SUCCESS. Upstream systemd carries
  appropriate patches for this already. The relevant commits are:

  411e869f497c7c7bd0688f1e3500f9043bc56e48
  39540de8abe24886693ca29a9caeea85c88089aa

  these should be backported to xenial's systemd.

  Christian

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