[Bug 1836593] Re: race condition in dep8 test

Launchpad Bug Tracker 1836593 at bugs.launchpad.net
Wed Sep 4 17:05:46 UTC 2019

This bug was fixed in the package cloud-utils -

cloud-utils (0.31-5-gef42f6b5-0ubuntu1) eoan; urgency=medium

  * New upstream snapshot.
    - test-growpart: fix logic error resulting in test failure.
      [Scott Moser] (LP: #1842682)
    - Fix race condition in test-growpart teardown seen on ppc64el.
      [Scott Moser] (LP: #1836593)

 -- Scott Moser <smoser at ubuntu.com>  Wed, 04 Sep 2019 11:07:42 -0400

** Changed in: cloud-utils (Ubuntu)
       Status: Confirmed => Fix Released

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  race condition in dep8 test

Status in cloud-utils:
  Fix Committed
Status in cloud-utils package in Ubuntu:
  Fix Released
Status in cloud-utils source package in Disco:
  Fix Committed

Bug description:

   * As can be seen in dep8 tests on published results [1], there seems
  to be a race condition on tear down of at least one of the growpart
  tests.  We seem to see it most on ppc64el [2].  I'm attaching cloud-
  utils-ppc64el-0.31-0ubuntu1.log that came from [3].

  [Test Case]

  * It seems that the test that fails (at least in the 2 cases I saw) is

  The relevant output in the log is this:

      unmount /tmp/test-growpart.VyOylU/mp
      clearing parts [1] from /dev/loop0
      delpart /dev/loop0 1
      delpart: failed to remove partition: Device or resource busy
      FAIL: ./test/test-growpart failed. pt_type=dos resizer=sfdisk

  I've copied the relevant portion of the log to attached 'short.log'.

  [Regression Potential]

  * Minor potential as the only changes being added are "udevadm
  settle". This will likely add a bit of more time to execution but
  won't change the logic of what was already being done (just serialize
  udev events).

  [Other Info]

  [1] https://autopkgtest.ubuntu.com/packages/cloud-utils
  [2] https://autopkgtest.ubuntu.com/packages/cloud-utils/eoan/ppc64el
  [3] https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-eoan/eoan/ppc64el/c/cloud-utils/20190712_175132_5ffd5@/log.gz


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