2794748d9c
Bugfix Icaf1bae8cb040b939f916a19ce026031ddb84af7 showed that restarting a compute service in the functional env is unrealistic causing faults to slip through. During that bug fix only the minimal change was done in the functional env regarding compute service restart to reproduce the reported fault. However the restart of the compute service could be made even more realistic. This patch simulates a compute service restart in the functional env by stopping the original compute service and starting a totally new compute service for the same host and node. This way we can make sure that we get a brand new ComputeManager in the new service and no state can leak between the old and the new service. This change revealed another shortcoming of the functional env. In the real world the nova-compute service could be restarted without loosing any running servers on the compute host. But with the naive implementation of this change the compute service is re-created. This means that a new ComputeManager is instantiated that loads a new FakeDriver instance as well. That new FakeDriver instance then reports an empty hypervisor. This behavior is not totally unrealistic as it simulates such a compute host restart that cleans the hypervisor state as well (e.g. compute host redeployment). However this type of restart shows another bug in the code path that destroys and deallocates evacuated instance from the source host. Therefore this patch implements the compute service restart in a way that simulates only a service restart and not a full compute restart. A subsequent patch will add a test that uses the clean hypervisor case to reproduces the revealed bug. Related-Bug: #1724172 Change-Id: I9d6cd6259659a35383c0c9c21db72a9434ba86b1
26 lines
963 B
JSON
26 lines
963 B
JSON
{
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"event_type": "libvirt.connect.error",
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"payload": {
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"nova_object.data": {
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"reason": {
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"nova_object.data": {
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"exception": "libvirtError",
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"exception_message": "Sample exception for versioned notification test.",
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"function_name": "_get_connection",
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"module_name": "nova.virt.libvirt.host",
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"traceback": "Traceback (most recent call last):\n File \"nova/virt/libvirt/host.py\", line ..."
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},
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"nova_object.name": "ExceptionPayload",
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"nova_object.namespace": "nova",
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"nova_object.version": "1.1"
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},
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"ip": "10.0.2.15"
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},
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"nova_object.name": "LibvirtErrorPayload",
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"nova_object.namespace": "nova",
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"nova_object.version": "1.0"
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},
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"priority": "ERROR",
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"publisher_id": "nova-compute:compute"
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}
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