Public bug reported:
When a VM is evacuated from the failed server without stating explicit
destination (i.e. letting the scheduler decide) claims to the old
hypervisor in placement are never deleted.
How to replicate:
- Place VM on the hypervisor
- Check that claims are OK:
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| resource_provider | generation | resources
| project_id | user_id |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| 229cce5f-3b87-438a-baa9-539be0fc9bd8 | 5 | {'VCPU': 1, 'MEMORY_MB':
256} | 4facfb06808a4621b4f47123a0184a4a | 15da82817e56446198fcdd870a45d8f4 |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
- Stop the hypervisor and after nova pronounce hypervisor dead run evacuation
without stating the destination
- Check claims again
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| resource_provider | generation | resources
| project_id | user_id |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| 229cce5f-3b87-438a-baa9-539be0fc9bd8 | 6 | {'VCPU': 1, 'MEMORY_MB':
256} | 4facfb06808a4621b4f47123a0184a4a | 15da82817e56446198fcdd870a45d8f4 |
| 5395932e-b5e0-4a0c-be6a-7328af751642 | 14 | {'VCPU': 1, 'MEMORY_MB':
256} | 4facfb06808a4621b4f47123a0184a4a | 15da82817e56446198fcdd870a45d8f4 |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
Result: Claims to the old hypervisor have not been deleted
Expected results: Only claims for new hypervisor exist
It is possible regression of https://bugs.launchpad.net/nova/+bug/1896463
It probably happened when the resource tracker was improved and the whole
migration procedure was rewritten. Migration/resize work because claims
deletion happens in confirm/revert action, however, evacuation doesn't have
anything like that and so it's never deleted.
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2077009
Title:
Nova doesn't clean claims after evacuation
Status in OpenStack Compute (nova):
New
Bug description:
When a VM is evacuated from the failed server without stating explicit
destination (i.e. letting the scheduler decide) claims to the old
hypervisor in placement are never deleted.
How to replicate:
- Place VM on the hypervisor
- Check that claims are OK:
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| resource_provider | generation | resources
| project_id | user_id |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| 229cce5f-3b87-438a-baa9-539be0fc9bd8 | 5 | {'VCPU': 1,
'MEMORY_MB': 256} | 4facfb06808a4621b4f47123a0184a4a |
15da82817e56446198fcdd870a45d8f4 |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
- Stop the hypervisor and after nova pronounce hypervisor dead run evacuation
without stating the destination
- Check claims again
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| resource_provider | generation | resources
| project_id | user_id |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
| 229cce5f-3b87-438a-baa9-539be0fc9bd8 | 6 | {'VCPU': 1,
'MEMORY_MB': 256} | 4facfb06808a4621b4f47123a0184a4a |
15da82817e56446198fcdd870a45d8f4 |
| 5395932e-b5e0-4a0c-be6a-7328af751642 | 14 | {'VCPU': 1,
'MEMORY_MB': 256} | 4facfb06808a4621b4f47123a0184a4a |
15da82817e56446198fcdd870a45d8f4 |
+--------------------------------------+------------+-------------------------------+----------------------------------+----------------------------------+
Result: Claims to the old hypervisor have not been deleted
Expected results: Only claims for new hypervisor exist
It is possible regression of https://bugs.launchpad.net/nova/+bug/1896463
It probably happened when the resource tracker was improved and the whole
migration procedure was rewritten. Migration/resize work because claims
deletion happens in confirm/revert action, however, evacuation doesn't have
anything like that and so it's never deleted.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/2077009/+subscriptions
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