Master promotions are failing tempest test (fs020) - tempest.api.volume.* are failing sporadically

[Ronelle Landy]

Related-Bug: https://bugs.launchpad.net/tripleo/+bug/1840451

^^ was resolved by increasing the CinderLVMLoopDeviceSize.
Now we are seeing a random combination of tempest.api.volume.* failing.

See logs:

http://logs.rdoproject.org/83/21683/15/check/periodic-tripleo-ci-centos-7-ovb-1ctlr_2comp-featureset020-master/9879ac9/logs/undercloud/home/zuul/tempest.log.txt.gz

 https://logs.rdoproject.org/openstack-periodic-master/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-7-ovb-1ctlr_2comp-featureset020-master/9c5f8af/logs/undercloud/home/zuul/tempest.log.txt.gz#_2019-08-21_04_30_17

abishop is looking into this.

Since these failures impact the master promotion, marking this as a promotion-blocker.

[wes hayutin (weshayutin)]

skip list review?

[Ronelle Landy (rlandy)]

Added to skip_list:
https://review.opendev.org/#/c/678141/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/678141
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=c1801751efe1861915c02d2faa246e74d8aeabfb
Submitter: Zuul
Branch: master

commit c1801751efe1861915c02d2faa246e74d8aeabfb
Author: Chandan kumar <email address hidden>
Date: Fri Aug 23 09:52:16 2019 +0530

    Move SnapshotsActionsTest to master skip list

    These tests are failing randomly due insufficient free virtual
    space (-12.0GB) to accommodate thin provisioned 1GB volume on
    host hostgroup in Cinder. Increasing LVM space does not fix the
    actual issue.

    Investigation is in-progress. Adding it to skip list for master
    promotion.

    Depends-On: https://review.opendev.org/#/c/674556/

    Related-Bug: #1841071

    Change-Id: I0e73bc0e4b1abb761c2f5f470297b2f16928021c
    Signed-off-by: Chandan kumar <email address hidden>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/678894

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/678894
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=c5a6d012a18f8f8f571eba9218a9f7e527b67f87
Submitter: Zuul
Branch: master

commit c5a6d012a18f8f8f571eba9218a9f7e527b67f87
Author: Alan Bishop <email address hidden>
Date: Tue Aug 27 08:45:43 2019 -0700

    Increase size of cinder LVM backend

    Increase the size of the cinder LVM backend to 20GB, and re-enable
    tempest tests that were previously skipped due to space limitation.

    Tempest's volume tests don't actually need 20GB of storage, but rapidly
    creating and deleting volumes in a short time span may cause cinder's
    scheduler to report a reduced amount of free space. The actual amount
    of space in use is updated by the cinder-volume service, but this is
    done periodically. Increasing the size of the LVM backend allows the
    scheduler to sustain a burst of volume creation requests during the
    time interval between updates from the volume service on the actual
    amount of storage in use.

    Closes-Bug: #1841071
    Change-Id: Ie02211f3a6706f6fa1102fb8dc5ee0e9e54252cc