Comment 34 for bug 1253896

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Salvatore Orlando (salvatore-orlando) wrote :

Eugene,

I looked back t your comment as I too found weird that a tempest network was created so early.
That network is indeed the 'private' devstack network, which is used throughout the non-isolated jobs.

It seems the network (and the subnet) are created before the q-agt service is started, and this could lead to the situation described above. This failure mode would affect only non-isolated jobs. But if we look at [1], non-isolated jobs currently account for 70% of the total failures for bug 1253896. I do not have a way to say how much of this failures currently occur for this issue, but I guess that it is a consistent percentage of them.

Perhaps this could be easily solved by rearranging how devstack creates network and starts neutron services.

[1] http://logstash.openstack.org/#eyJmaWVsZHMiOltdLCJzZWFyY2giOiJtZXNzYWdlOlwiU1NIVGltZW91dDogQ29ubmVjdGlvbiB0byB0aGVcIiBBTkQgbWVzc2FnZTpcInZpYSBTU0ggdGltZWQgb3V0LlwiIEFORCBmaWxlbmFtZTpcImNvbnNvbGUuaHRtbFwiXG4iLCJ0aW1lZnJhbWUiOiI2MDQ4MDAiLCJncmFwaG1vZGUiOiJjb3VudCIsIm9mZnNldCI6MCwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwibW9kZSI6InNjb3JlIiwiYW5hbHl6ZV9maWVsZCI6ImJ1aWxkX25hbWUifQ==