[Bug 1829347] [NEW] systemd autopkgtest 'storage' fails adding/rmmoding scsi_debug

[Dan Streetman]

Public bug reported:

[impact]

systemd autopkgtest fails

[test case]

run systemd autopkgtest, check for output like:

LUKS device with "tmp" option ... rmmod: ERROR: Module scsi_debug is in use
FAIL

======================================================================
FAIL: test_luks_tmp (__main__.CryptsetupTest)
LUKS device with "tmp" option
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/autopkgtest.It858Q/build.e7O/src/debian/tests/storage", line 59, in setUp
    self.fail('%s exists already' % self.plaintext_dev)
AssertionError: /dev/mapper/testcrypt1 exists already

this has attempted to be fixed in various ways so the output is a bit
different across different releases, but all of them have the common
point of failing to modprobe or rmmod the scsi_debug module, which by
itself doesn't indicate a failure.

[regression potential]

low; this is fixing a testcase only.

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

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https://bugs.launchpad.net/bugs/1829347

Title:
  systemd autopkgtest 'storage' fails adding/rmmoding scsi_debug

Status in systemd package in Ubuntu:
  New

Bug description:
  [impact]

  systemd autopkgtest fails

  [test case]

  run systemd autopkgtest, check for output like:

  LUKS device with "tmp" option ... rmmod: ERROR: Module scsi_debug is in use
  FAIL

  ======================================================================
  FAIL: test_luks_tmp (__main__.CryptsetupTest)
  LUKS device with "tmp" option
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/tmp/autopkgtest.It858Q/build.e7O/src/debian/tests/storage", line 59, in setUp
      self.fail('%s exists already' % self.plaintext_dev)
  AssertionError: /dev/mapper/testcrypt1 exists already

  this has attempted to be fixed in various ways so the output is a bit
  different across different releases, but all of them have the common
  point of failing to modprobe or rmmod the scsi_debug module, which by
  itself doesn't indicate a failure.

  [regression potential]

  low; this is fixing a testcase only.

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