u'ceph_tuning_settings' error while re-deploying env

[Michael Polenchuk]

Detailed bug description:
 Start a deploy, which fails; then try hitting "deploy changes" again,
 we get an error ("u'ceph_tuning_settings'") at task serialization, before deployment starts;
 nailgun app.log says ceph_tuning_settings is empty.

Steps to reproduce:
 1. Create & deploy new Fuel env;
 2. Deploy finishes (with failure or not)
 3. Deploy changes again (re-deploy)

Expected results:
 Redeploy is carried out normally.

Actual result:
 Task serialization fails due to u'ceph_tuning_settings' being None.

Description of the environment:
 Fuel 10+
 Storage: ceph

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/424509

[Dmitry Belyaninov (dbelyaninov)]

https://product-ci.infra.mirantis.net/job/10.0.system_test.ubuntu.thread_3/166/testReport/(root)/ceph_ha_one_controller_with_cinder_restart/ceph_ha_one_controller_with_cinder_restart/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/424509
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=57a64b40327fd9f27ea7288eced8f764a5f2b70c
Submitter: Jenkins
Branch: master

commit 57a64b40327fd9f27ea7288eced8f764a5f2b70c
Author: Michael Polenchuk <email address hidden>
Date: Tue Jan 24 12:31:31 2017 +0400

    Safely get the ceph tuning settings

    Avoid case when storage data ain't changed
    that triggers calculating a non-existent key.

    Change-Id: Ifbac52e0e28db073d8773c9ff49019f480641385
    Closes-Bug: #1658699

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/newton
Review: https://review.openstack.org/430105

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/430105
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=378528c9d6201a0c8fd7598d4ceaef5b13028652
Submitter: Jenkins
Branch: stable/newton

commit 378528c9d6201a0c8fd7598d4ceaef5b13028652
Author: Michael Polenchuk <email address hidden>
Date: Tue Jan 24 12:31:31 2017 +0400

    Safely get the ceph tuning settings

    Avoid case when storage data ain't changed
    that triggers calculating a non-existent key.

    Change-Id: Ifbac52e0e28db073d8773c9ff49019f480641385
    Closes-Bug: #1658699
    (cherry picked from commit 57a64b40327fd9f27ea7288eced8f764a5f2b70c)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/fuel-library 11.0.0.0rc1 release candidate.