[Bug 1991285] Re: systemd/245.4-4ubuntu3.18 ADT test failure with linux/5.4.0-128.144

[Nick Rosbrook]

Thanks for reviewing, Steve.

I took a closer look at this. The failure is indeed caused by the
container environment, and not something specific to the armhf arch. In
particular, the lxd images ship with a non-empty /etc/fstab which
contains an entry for a disk label that is not present:

root at autopkgtest-lxd-iameji:/tmp/autopkgtest.DW7ZuH/build.h0Z/src# blkid -o list
device               fs_type   label      mount point              UUID
-------------------------------------------------------------------------------------------------------
root at autopkgtest-lxd-iameji:/tmp/autopkgtest.DW7ZuH/build.h0Z/src# cat /etc/fstab 
LABEL=cloudimg-rootfs	/	 ext4	defaults	0 1

Hence, systemd-remount-fs.service fails with the errors shown in comment
#4. I think it would be better to ignore the failure in containers
instead of just armhf.

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Title:
  systemd/245.4-4ubuntu3.18 ADT test failure with linux/5.4.0-128.144

Status in linux package in Ubuntu:
  Incomplete
Status in systemd package in Ubuntu:
  Invalid
Status in linux source package in Focal:
  New
Status in systemd source package in Focal:
  Incomplete

Bug description:
  [Impact]
  The armhf autopkgtests currently fail in Focal due to this, and failures are not marked as regressions. This limits our ability to catch other regressions on armhf.

  [Test Plan]
  The boot-and-services autopkgtest should not fail on armhf. Specifically, the test_no_failed test should ignore systemd-remount-fs.service failures on armhf only.

  [Where problems could occur]
  The fix is limited to the boot-and-services autopkgtest, so there is limited risk. Any bugs would show up in that test.

  [Original Description]

  This is a scripted bug report about ADT failures while running systemd
  tests for linux/5.4.0-128.144 on focal. Whether this is caused by the
  dep8 tests of the tested source or the kernel has yet to be
  determined.

  Testing failed on:
      armhf: https://autopkgtest.ubuntu.com/results/autopkgtest-focal/focal/armhf/s/systemd/20220929_122501_863cf@/log.gz

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