Some more interesting output:
In passed one, type volume/volume3 is set and failed one volume2 and volume3 is setted.
So where volume2/volume3 is there-> volume backup check is skipped
and where volume/volume3 is there -> it is getting passed

That brings another question why volume/volume3 is getting created sometime. 

passed one
https://logs.rdoproject.org/openstack-periodic-24hr/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-7-ovb-1ctlr_1comp-featureset020-queens/00e8f34/logs/undercloud/home/zuul/tempest/tempest.log.txt.gz#_2019-05-28_07_09_33_221

       Body: <omitted>
    Response - Headers: {'status': '201', u'content-length': '7193', 'content-location': 'http://10.0.0.5:5000/v3/auth/tokens', u'x-subject-token': '<omitted>', u'vary': 'X-Auth-Token', u'server': 'Apache', u'connection': 'close', u'date': 'Tue, 28 May 2019 07:09:32 GMT', u'content-type': 'application/json', u'x-openstack-request-id': 'req-1fb3884a-bb20-4f19-8ed3-5c3fdbef4766'}
        Body: {"token": {"is_domain": false, "methods": ["password"], "roles": [{"id": "14684ad796274aed99d72b50f94c22c9", "name": "heat_stack_owner"}, {"id": "79c172778e4b47d19faa5f828a903a3a", "name": "admin"}], "expires_at": "2019-05-28T08:09:33.000000Z", "project": {"domain": {"id": "default", "name": "Default"}, "id": "5b4840a5140b4fb6926e81463a2ec00b", "name": "admin"}, "catalog": [{"endpoints": [{"region_id": "regionOne", "url": "http://172.18.0.20:8080/v1/AUTH_5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "internal", "id": "28cc4e52ac564793843797691c81bcd4"}, {"region_id": "regionOne", "url": "http://172.18.0.20:8080", "region": "regionOne", "interface": "admin", "id": "8962ef5d0cfd41139fa3aa667b79702e"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8080/v1/AUTH_5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "public", "id": "fa8322650d324b21b10487ea2191aece"}], "type": "object-store", "id": "12b9c02a6f1645389754bf4ff0888db0", "name": "swift"}, {"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.22:8778/placement", "region": "regionOne", "interface": "internal", "id": "040ef39e452b43bc8ac307a0daff3be1"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8778/placement", "region": "regionOne", "interface": "public", "id": "2d891945d81a48c6bb3f4ba401f1172f"}, {"region_id": "regionOne", "url": "http://172.17.0.22:8778/placement", "region": "regionOne", "interface": "admin", "id": "6a2ec796f4964154b5831fea2658458c"}], "type": "placement", "id": "457947346f2b43ddaf33671b9d432143", "name": "placement"}, {"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.22:8776/v3/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "internal", "id": "4864fa63a7c241a3995abefdbab3deb6"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8776/v3/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "public", "id": "83569f86daf840e9b707e7bfab64ca36"}, {"region_id": "regionOne", "url": "http://172.17.0.22:8776/v3/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "admin", "id": "aa484c5157d34768bb8595aa63aa0f7e"}], "type": "volume", "id": "47636c586a2f469ca1121ed3a3d204f9", "name": "cinderv3"}, {"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.22:8776/v3/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "internal", "id": "3cf34eed149a483388d682013a5f6702"}, {"region_id": "regionOne", "url": "http://172.17.0.22:8776/v3/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "admin", "id": "951d4f23aac34f83a229cc6d5b528927"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8776/v3/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "public", "id": "dc8c7b3b02664dafb6547c3ab1d7d0d3"}], "type": "volumev3", "id": "494c72bcc870434ea67ec3756ec56a6a", "name": "cinderv3"}, {"endpoints": [{"region_id": "regionOne", "url": "http://10.0.0.5:8000/v1", "region": "regionOne", "interface": "public", "id": "151b1581b08e4e46b9a8acca7f16912c"}, {"region_id": "regionOne", "url": "http://172.17.0.22:8000/v1", "region": "regionOne", "interface": "admin", "id": "cd6082738923487c9ae06f0683e42e91"}, {"region_id": "regionOne", "url": "http://172.17.0.22:8000/v1", "region": "regionOne", "interface": "internal", "id": "d699fc336dd94cfb9c94d52a34a7233a"}], "type": "cloudformation", "id": "58831f6a1c434c6dbb469c68e4c6a49d", "name": "heat-cfn"}, {"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.22:8004/v1/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "internal", "id": "81d224cfa7434972b4be2d284894a43e"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8004/v1/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "public", "id": "90dda662b3d94f97bb66dbbea67b3931"}, {"region_id": "regionOne", "url": "http://172.17.0.22:8004/v1/5b4840a5140b4fb6926e81463a2ec00b", "region": "regionOne", "interface": "admin", "id": "e62d120c68e64f188ca6a071de135128"}], "type": "orchestration", "id": "58e3954285644151ba337d9870a09d37", " _log_request_full /usr/lib/python2.7/site-packages/tempest/lib/common/rest_client.py:434
2019-05-28 07:09:33.275 85885 INFO tempest.lib.common.rest_client [req-740242c5-70de-4f13-8c07-553d674aca7e ] Request (ServerRescueNegativeTestJSON:setU

failed one
https://logs.rdoproject.org/openstack-periodic-24hr/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-7-ovb-1ctlr_1comp-featureset020-queens/6bc873a/logs/undercloud/home/zuul/tempest/tempest.log.txt.gz#_2019-05-29_06_51_51_598

 Response - Headers: {'status': '201', u'content-length': '7193', 'content-location': 'http://10.0.0.5:5000/v3/auth/tokens', u'x-subject-token': '<omitted>', u'vary': 'X-Auth-Token', u'server': 'Apache', u'connection': 'close', u'date': 'Wed, 29 May 2019 06:51:51 GMT', u'content-type': 'application/json', u'x-openstack-request-id': 'req-f8040e5d-e1ce-4cbe-862a-9a753869b878'}
        Body: {"token": {"is_domain": false, "methods": ["password"], "roles": [{"id": "147b7750b87c4a59800a2aa760914bee", "name": "admin"}, {"id": "bce75232476740bf82a44f9631d653ec", "name": "heat_stack_owner"}], "expires_at": "2019-05-29T07:51:51.000000Z", "project": {"domain": {"id": "default", "name": "Default"}, "id": "e12c12d20b71452c8466830bc51b5604", "name": "admin"}, "catalog": [{"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.10:9696", "region": "regionOne", "interface": "admin", "id": "30b017bafbd2443c92a03f59c617aea8"}, {"region_id": "regionOne", "url": "http://172.17.0.10:9696", "region": "regionOne", "interface": "internal", "id": "a6339ba252ff48c9a845db583f5ba1d7"}, {"region_id": "regionOne", "url": "http://10.0.0.5:9696", "region": "regionOne", "interface": "public", "id": "e117bdd44f38495382f2d503eaf0b3e3"}], "type": "network", "id": "226e439e316a4f44a6ed338c4255f848", "name": "neutron"}, {"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.10:8000/v1", "region": "regionOne", "interface": "admin", "id": "604bff7ef98e4a5bba615e7311d85800"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8000/v1", "region": "regionOne", "interface": "public", "id": "c4a42b07615641eb8ce3859797192f72"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8000/v1", "region": "regionOne", "interface": "internal", "id": "fdec9db487f64653bcd37a06644a35f6"}], "type": "cloudformation", "id": "243421ed77ae47f7b6acf2130ecb4079", "name": "heat-cfn"}, {"endpoints": [{"region_id": "regionOne", "url": "http://10.0.0.5:8776/v3/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "public", "id": "0140cc4db14246c58a26ece280e98410"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8776/v3/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "internal", "id": "1829ea129e25450882fd63708a5a1bc6"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8776/v3/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "admin", "id": "ea2b4c072ea44d918fc155baeebc15bc"}], "type": "volumev3", "id": "359db9d2bf494af3b411dbe29c35ce47", "name": "cinderv3"}, {"endpoints": [{"region_id": "regionOne", "url": "http://10.0.0.5:8776/v2/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "public", "id": "064413d31149478abce64b91a85bd60c"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8776/v2/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "internal", "id": "c9ef7d22e626422789bf1ab5cf6f24e1"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8776/v2/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "admin", "id": "dc48401c2a984a8dbf94e0caa3fdb395"}], "type": "volumev2", "id": "68f19e12fc314a2c853c33556331c21d", "name": "cinderv2"}, {"endpoints": [{"region_id": "regionOne", "url": "http://10.0.0.5:8774/v2.1", "region": "regionOne", "interface": "public", "id": "003a478b74a4451b875bde1ec6cac7c3"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8774/v2.1", "region": "regionOne", "interface": "admin", "id": "850d95bf0ae441e4b2591f4bcec31bc9"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8774/v2.1", "region": "regionOne", "interface": "internal", "id": "e28997a426ea4540886119f322786a54"}], "type": "compute", "id": "741edf46d1a14618a8281588369b9749", "name": "nova"}, {"endpoints": [{"region_id": "regionOne", "url": "http://172.17.0.10:8004/v1/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "internal", "id": "7505476f98ca439685e22aad5d03bcb0"}, {"region_id": "regionOne", "url": "http://172.17.0.10:8004/v1/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "admin", "id": "cbf18435d8a34401b0a355afa62daff1"}, {"region_id": "regionOne", "url": "http://10.0.0.5:8004/v1/e12c12d20b71452c8466830bc51b5604", "region": "regionOne", "interface": "public", "id": "e3b26a5823474fd8904089c7cfe58853"}], "type": "orchestration", "id": "7f6dacb765d3421faa621ca91b1ed069", "name": "heat"}, {"endpoints": [{"region_id": "regionOne", "url": "http://10.0.0.5:8778/placement", "regio _log_request_full /usr/lib/python2.7/site-packages/tempest/lib/common/rest_client.py:434