** Also affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1820612
Title:
Logging is hard to read if there is a problem with resources during
live migration
Status in OpenStack nova-cloud-controller charm:
Incomplete
Status in OpenStack Compute (nova):
New
Bug description:
Issuing the command to migrate an instance from openstack-6 to another
hosts (openstack-17) which does have enough resources
# logging in nova-compute.log
2019-03-18 12:56:49.111 301805 DEBUG nova.scheduler.client.report
[req-786024d5-2ba8-450c-9809-bbafaf7c15bd 7a5e20f2d1fc4af18f959a4666c2265c
b07f32d8f1f84ba7bbe821ee7fa4f09a - f750199c451f432f9d615a147744f4f5
f750199c451f432f9d615a147744f4f5] Doubling-up allocation request for move
operation. _move_operation_alloc_request
/usr/lib/python2.7/dist-packages/nova/scheduler/client/report.py:162
2019-03-18 12:56:49.112 301805 DEBUG nova.scheduler.client.report
[req-786024d5-2ba8-450c-9809-bbafaf7c15bd 7a5e20f2d1fc4af18f959a4666c2265c
b07f32d8f1f84ba7bbe821ee7fa4f09a - f750199c451f432f9d615a147744f4f5
f750199c451f432f9d615a147744f4f5] New allocation request containing both source
and destination hosts in move operation: {'allocations': [{'resource_provider':
{'uuid': u'4ce95dcf-4c42-47cf-bd1e-48a0f4a5ecec'}, 'resources': {u'VCPU': 4,
u'MEMORY_MB': 2048, u'DISK_GB': 20}}, {'resource_provider': {'uuid':
u'57990d7c-7b10-40ee-916f-324bf7784eed'}, 'resources': {u'VCPU': 4,
u'MEMORY_MB': 2048, u'DISK_GB': 20}}]} _move_operation_alloc_request
/usr/lib/python2.7/dist-packages/nova/scheduler/client/report.py:202
2019-03-18 12:56:49.146 301805 WARNING nova.scheduler.client.report
[req-786024d5-2ba8-450c-9809-bbafaf7c15bd 7a5e20f2d1fc4af18f959a4666c2265c
b07f32d8f1f84ba7bbe821ee7fa4f09a - f750199c451f432f9d615a147744f4f5
f750199c451f432f9d615a147744f4f5] Unable to submit allocation for instance
71111e00-7913-4de9-8f45-ce13fcb8a104 (409 <html>
<head>
<title>409 Conflict</title>
</head>
<body>
<h1>409 Conflict</h1>
There was a conflict when trying to complete your request.<br /><br />
Unable to allocate inventory: Unable to create allocation for 'MEMORY_MB' on
resource provider '4ce95dcf-4c42-47cf-bd1e-48a0f4a5ecec'. The requested amount
would exceed the capacity.
</body>
</html>)
2019-03-18 12:56:49.147 301805 WARNING nova.scheduler.utils
[req-786024d5-2ba8-450c-9809-bbafaf7c15bd 7a5e20f2d1fc4af18f959a4666c2265c
b07f32d8f1f84ba7bbe821ee7fa4f09a - f750199c451f432f9d615a147744f4f5
f750199c451f432f9d615a147744f4f5] Failed to compute_task_migrate_server: No
valid host was found. Unable to move instance
71111e00-7913-4de9-8f45-ce13fcb8a104 to host openstack-17. There is not enough
capacity on the host for the instance.: NoValidHost: No valid host was found.
Unable to move instance 71111e00-7913-4de9-8f45-ce13fcb8a104 to host
openstack-17. There is not enough capacity on the host for the instance.
2019-03-18 12:56:49.148 301805 WARNING nova.scheduler.utils
[req-786024d5-2ba8-450c-9809-bbafaf7c15bd 7a5e20f2d1fc4af18f959a4666c2265c
b07f32d8f1f84ba7bbe821ee7fa4f09a - f750199c451f432f9d615a147744f4f5
f750199c451f432f9d615a147744f4f5] [instance:
71111e00-7913-4de9-8f45-ce13fcb8a104] Setting instance to ACTIVE state.:
NoValidHost: No valid host was found. Unable to move instance
71111e00-7913-4de9-8f45-ce13fcb8a104 to host openstack-17. There is not enough
capacity on the host for the instance.
When searching who resource provider '4ce95dcf-4c42-47cf-bd1e-48a0f4a5ecec'
is, used the nova_api database
select * from resource_providers where
uuid='4ce95dcf-4c42-47cf-bd1e-48a0f4a5ecec';
+---------------------+---------------------+----+--------------------------------------+------------------+------------+----------+
| created_at | updated_at | id | uuid
| name | generation | can_host |
+---------------------+---------------------+----+--------------------------------------+------------------+------------+----------+
| 2018-05-09 11:00:01 | 2019-03-14 10:47:55 | 39 |
4ce95dcf-4c42-47cf-bd1e-48a0f4a5ecec | openstack-6.maas | 171 | NULL
|
+---------------------+---------------------+----+--------------------------------------+------------------+------------+----------+
1 row in set (0.00 sec)
So that is openstack-6 and nog 17 as mentioned in the above logging. From the
logging provided this is not clear, also there does not seem to be an command
to retrieve the resource-provider, based on the uuid and that is the only thing
logged.
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