[Bug 1847816] Re: storage autopkgtest always fails with linux-{kvm, azure, etc} kernels that don't include scsi_debug module

[Łukasz Zemczak]

Hello Dan, or anyone else affected,

Accepted systemd into xenial-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/229-4ubuntu21.28 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
xenial to verification-done-xenial. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-xenial. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: systemd (Ubuntu Xenial)
       Status: In Progress => Fix Committed

** Tags removed: verification-done
** Tags added: verification-needed verification-needed-xenial

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https://bugs.launchpad.net/bugs/1847816

Title:
  storage autopkgtest always fails with linux-{kvm,azure,etc} kernels
  that don't include scsi_debug module

Status in autopkgtest-cloud:
  Fix Released
Status in linux-kvm package in Ubuntu:
  New
Status in systemd package in Ubuntu:
  Fix Released
Status in linux-kvm source package in Xenial:
  New
Status in systemd source package in Xenial:
  Fix Committed
Status in linux-kvm source package in Bionic:
  New
Status in systemd source package in Bionic:
  Fix Released
Status in linux-kvm source package in Disco:
  New
Status in systemd source package in Disco:
  Won't Fix
Status in linux-kvm source package in Eoan:
  New
Status in systemd source package in Eoan:
  Fix Released
Status in linux-kvm source package in Focal:
  New
Status in systemd source package in Focal:
  Fix Released

Bug description:
  Note: this bug touches on multiple packages:
  - autopkgtest-cloud: merge request open to install 'modules-extra' package
  - systemd: update autopkgtest to skip test if scsi_debug module isn't available (SRU template below is for this change)
  - linux-kvm: has CONFIG_SCSI_DEBUG unset, but would be good to have scsi_debug module built for this kernel

  [SRU template for systemd]

  [impact]

  the 'storage' autopkgtest requires the 'scsi_debug' module, and if it
  can't load it (and it's not built-in), the test fails.  On some custom
  kernels, this module is included in the new 'linux-modules-extra-*'
  deb which isn't installed by default, so the test always fails when
  doing a reverse-dep autopkgtest using such a kernel's meta pkg.

  Additionally, some custom kernels, like linux-kvm, have SCSI_DEBUG
  disabled entirely; for those kernels, it will never be possible to
  load the scsi_debug module and the test should be skipped.

  [test case]

  run the 'storage' autopkgtest with a custom kernel that doesn't
  provide the scsi_debug module in the standard linux-modules deb, or
  check the autopkgtest.u.c history, for example:

  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
  /autopkgtest-focal/focal/amd64/s/systemd/20191209_150835_237a5@/log.gz

  [regression potential]

  as this modifies one of the autopkgtest --setup-commands, a regression
  would most likely cause immediate test failure due to failing to
  install the proper linux-* debs.

  For the systemd 'storage' test change, this only skips the test if the
  scsi_debug module can't be loaded (and isn't already present, i.e.
  loaded or built-in).  Any regression potential from that is low, but
  likely would involve incorrect test skips and/or missing valid
  problems due to skipping the test.

  [scope]

  systemd in all releases needs to have its 'storage' test updated

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