race condition in dep8 test

[Scott Moser]

[Impact]

 * 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 'growpart-loop'.

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

--

[Łukasz Zemczak (sil2100)]

Hello Scott, or anyone else affected,

Accepted cloud-utils into disco-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/cloud-utils/0.31-0ubuntu1.1 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 and change the tag from verification-needed-disco to verification-done-disco. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-disco. 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.

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted cloud-utils (0.31-0ubuntu1.1) for disco have finished running.
The following regressions have been reported in tests triggered by the package:

cloud-utils/0.31-0ubuntu1.1 (amd64, i386, ppc64el, arm64, s390x)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/disco/update_excuses.html#cloud-utils

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package cloud-utils - 0.31-5-gef42f6b5-0ubuntu1

---------------
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 <email address hidden> Wed, 04 Sep 2019 11:07:42 -0400