3c2155cb4d
THE CHANGE This also introduce some new features: - allows to override a stack verification step to be executed at the end of stack creation to check the stack is in healthy cond and eventually retry creating it - restructure fail safe and concurrent creation loop to make it easier to understand and maintain - this should fix some different-host of same-host test case failures tipically seen in downstream jobs by checking nova scheduler hints are respected and eventually skip neutron test cases thare pretend to check connectivity between vms running on different (or the same) hypervisor host. THE PROBLEM When schedulers hints are given to nova to chose where to allocate new VMs, there are no warranties to make sure it actually follows them. In special it has saw many times that it fails to do it expecially when many VMs are being created on the same time, for example when running tobiko from a machine with many CPU core. On such case test runner decides to spawn many parallel workers (typically 2 for every core when executing on hyperthreading CPUs). It has been seen the more test runner workers executing tests the highest is the probability these hints are unmet by Nova. THE WORKAROUND To workaround this problem with this change we are verifying scheduler hints has met. If not it retries creating them up to two times before raising a SkipException to skip test current case. Change-Id: I8c0cff5ca69680aba3842bd7738f27651a677633 |
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| .. | ||
| __init__.py | ||
| _client.py | ||
| _stack.py | ||
| _template.py | ||