[Bug 1975587] Autopkgtest regression report (systemd/245.4-4ubuntu3.19)

[Ubuntu SRU Bot]

All autopkgtests for the newly accepted systemd (245.4-4ubuntu3.19) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

linux-aws-5.13/5.13.0-1031.35~20.04.1 (amd64)
munin/2.0.56-1ubuntu1 (arm64)
linux-gcp-5.8/5.8.0-1039.41 (amd64)
gvfs/1.44.1-1ubuntu1.1 (amd64)
linux-gcp-5.11/5.11.0-1030.34~20.04.3 (amd64)
linux-hwe-5.15/5.15.0-52.58~20.04.1 (amd64)
linux-oem-5.13/5.13.0-1029.36 (amd64)
systemd/245.4-4ubuntu3.19 (armhf)


Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-
migration/focal/update_excuses.html#systemd

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

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https://bugs.launchpad.net/bugs/1975587

Title:
  systemd: fix test-execute autotest failure with kernel 5.15 in focal

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

Bug description:
  [Impact]

  test-execute autotest is failing in focal with kernel 5.15. This is
  because the following kernel commit changed the ABI for ioprio:

  e70344c05995 ("block: fix default IO priority handling")

  Previously setting IOPRIO_CLASS_NONE for a process would report
  IOPRIO_CLASS_NONE back. But starting with 5.15 it reports
  IOPRIO_CLASS_BE instead.

  [Test case]

  Run systemd autopkgtest and check for the test-execute result.

  [Fix]

  Change test/test-execute/exec-ioschedulingclass-none.service to
  recognize both "none" and "best-effort" as valid returned strings from
  ionice.

  This change is already available in jammy and above.

  [Regression potential]

  We may see regressions in systemd autopkgtest, we won't introduce any
  potential regressions in systemd itself, because this is only
  affecting the specific unit test.

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