yahoo-eng-team team mailing list archive

[Matt Riedemann <mriedem@xxxxxxxxxx>]

** No longer affects: tempest

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1668828

Title:
  test_list_servers_filtered_by_ip fails ccasionally

Status in OpenStack Compute (nova):
  Triaged

Bug description:
  
  1. Problem:
      test_list_servers_filtered_by_ip sometimes fails with:
      Traceback (most recent call last):
        File "/home/zfl/tempest_m_git_local/tempest/api/compute/servers/test_list_server_filters.py", line 284, in test_list_servers_filtered_by_ip
          self.assertNotIn(self.s2_name, map(lambda x: x['name'], servers))
        File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 392, in assertNotIn
          self.assertThat(haystack, matcher, message)
        File "/usr/lib/python2.7/site-packages/testtools/testcase.py", line 433, in assertThat
          raise mismatch_error
      MismatchError: [u'tempest-ListServerFiltersTestJSON-instance-328761420'] matches Contains('tempest-ListServerFiltersTestJSON-instance-328761420')

  2. Reason:
      We can see from nova code that filter by ip is always "regexp match", 
      so if server2' ip happened to be part of server1's ip, then filter by
      server1's ip will also return server2.
      https://github.com/openstack/nova/blob/63805735c25a54ad1b9b97e05080c1a6153d8e22/nova/compute/api.py
      get_all

  3. Solution:
      There are 3 possibles ways,
      1) create servers with specified ips, such as 1.1.1.1, 1.1.1.2, 1.1.1.3
      2) find the longest ip in servers, and filter it by that ip, then only 
         one server will be returned
      3) filter using server1's ip, and using assertIn or assertNotIn according
         to whether other server ip is part of server1's ip

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1668828/+subscriptions