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

[Dan Streetman]

** Changed in: systemd (Ubuntu Disco)
       Status: Incomplete => Won't Fix

** Changed in: systemd (Ubuntu Cosmic)
       Status: Incomplete => Won't Fix

** Changed in: systemd (Ubuntu Bionic)
       Status: Incomplete => Won't Fix

** Changed in: systemd (Ubuntu)
       Status: New => Won't Fix

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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:
  Won't Fix
Status in systemd source package in Bionic:
  Won't Fix
Status in systemd source package in Cosmic:
  Won't Fix
Status in systemd source package in Disco:
  Won't Fix
Status in systemd source package in Eoan:
  Won't Fix
Status in systemd package in Debian:
  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

  or for older releases something like:

  autopkgtest [19:27:26]: test storage: [-----------------------
  modprobe: FATAL: Module scsi_debug not found in directory /lib/modules/4.18.0-1011-kvm
  ERROR

  ======================================================================
  ERROR: setUpClass (__main__.CryptsetupTest)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/tmp/autopkgtest.azsL0q/build.Hbd/src/debian/tests/storage", line 21, in setUpClass
      subprocess.check_call(['modprobe', 'scsi_debug'])
    File "/usr/lib/python3.6/subprocess.py", line 291, in check_call
      raise CalledProcessError(retcode, cmd)
  subprocess.CalledProcessError: Command '['modprobe', 'scsi_debug']' returned non-zero exit status 1.

  this has attempted to be fixed in disco/eoan 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.

  [other info]

  fixing test case that generally causes the failed rmmod in bug 1831459

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