Comment 0 for bug 1550192

Precondition
Env has 1000 volumes, Items Per Page 500
steps:
1. Check all volumes on page
2. Click button Delete.

Actual result:
After some time an error appears: “Gateway Timeout: The gateway did not receive a timely response from the upstream server or application. “

After some times some of the volumes stay in status “Deleting”.
After updating volume status on “Available” on page: Admin-System-Volumes deleting is possible.

relevant cinder-volume logs:
2016-02-25 15:04:34.338 4925 ERROR cinder.service [req-506085d9-f233-46a9-854a-af25ef2f8407 - - - - -] Exception encountered:
2016-02-25 15:04:34.338 4925 ERROR cinder.service Traceback (most recent call last):
2016-02-25 15:04:34.338 4925 ERROR cinder.service File "/usr/lib/python2.7/dist-packages/cinder/service.py", line 310, in report_state
2016-02-25 15:04:34.338 4925 ERROR cinder.service service_ref = objects.Service.get_by_id(ctxt, self.service_id)
2016-02-25 15:04:34.338 4925 ERROR cinder.service File "/usr/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 172, in wrapper
2016-02-25 15:04:34.338 4925 ERROR cinder.service result = fn(cls, context, *args, **kwargs)
2016-02-25 15:04:34.338 4925 ERROR cinder.service File "/usr/lib/python2.7/dist-packages/cinder/objects/service.py", line 71, in get_by_id
2016-02-25 15:04:34.338 4925 ERROR cinder.service db_service = db.service_get(context, id)
2016-02-25 15:04:34.338 4925 ERROR cinder.service File "/usr/lib/python2.7/dist-packages/cinder/db/api.py", line 100, in service_get
2016-02-25 15:04:34.338 4925 ERROR cinder.service return IMPL.service_get(context, service_id)
…
…
2016-02-25 15:04:34.338 4925 ERROR cinder.service File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 1053, in _do_get
2016-02-25 15:04:34.338 4925 ERROR cinder.service (self.size(), self.overflow(), self._timeout))
2016-02-25 15:04:34.338 4925 ERROR cinder.service TimeoutError: QueuePool limit of size 5 overflow 5 reached, connection timed out, timeout 30
2016-02-25 15:04:34.338 4925 ERROR cinder.service

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "8.0"
  api: "1.0"
  build_number: "569"
  build_id: "569"
  fuel-nailgun_sha: "558ca91a854cf29e395940c232911ffb851899c1"
  python-fuelclient_sha: "4f234669cfe88a9406f4e438b1e1f74f1ef484a5"
  fuel-agent_sha: "658be72c4b42d3e1436b86ac4567ab914bfb451b"
  fuel-nailgun-agent_sha: "b2bb466fd5bd92da614cdbd819d6999c510ebfb1"
  astute_sha: "b81577a5b7857c4be8748492bae1dec2fa89b446"
  fuel-library_sha: "33634ec27be77ecfb0b56b7e07497ad86d1fdcd3"
  fuel-ostf_sha: "3bc76a63a9e7d195ff34eadc29552f4235fa6c52"
  fuel-mirror_sha: "fb45b80d7bee5899d931f926e5c9512e2b442749"
  fuelmenu_sha: "78ffc73065a9674b707c081d128cb7eea611474f"
  shotgun_sha: "63645dea384a37dde5c01d4f8905566978e5d906"
  network-checker_sha: "a43cf96cd9532f10794dce736350bf5bed350e9d"
  fuel-upgrade_sha: "616a7490ec7199f69759e97e42f9b97dfc87e85b"
  fuelmain_sha: "d605bcbabf315382d56d0ce8143458be67c53434"