[Bug 1975587] Re: systemd: fix test-execute autotest failure with kernel 5.15 in focal

[Kleber Sacilotto de Souza]

** Changed in: systemd (Ubuntu Focal)
   Importance: Undecided => Medium

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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:
  In Progress

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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