1. In check-tempest-dsvm-neutron, "server creation" fails and BuildError servers remain.
2. If BuildError servers happen in setUpClass of Tempest, Tempest cannot delete the servers.
When BuildError servers happen many times in setUpClass, it causes this "Quota exceeded".
The first cause seems due to Nova or Neutron.
The second one is due to Tempest.
This problem seems due to two causes.
1. In check-tempest- dsvm-neutron, "server creation" fails and BuildError servers remain.
2. If BuildError servers happen in setUpClass of Tempest, Tempest cannot delete the servers.
When BuildError servers happen many times in setUpClass, it causes this "Quota exceeded".
The first cause seems due to Nova or Neutron.
The second one is due to Tempest.
https:/ /review. openstack. org/#/c/ 63365/ tries to fix the second cause.