** Also affects: nova/train
Importance: Undecided
Status: New
** Also affects: nova/queens
Importance: Undecided
Status: New
** Also affects: nova/rocky
Importance: Undecided
Status: New
** Also affects: nova/stein
Importance: Undecided
Status: New
** Changed in: nova/train
Status: New => In Progress
** Changed in: nova/queens
Status: New => Triaged
** Changed in: nova/rocky
Status: New => Triaged
** Changed in: nova/stein
Status: New => Triaged
** Changed in: nova/queens
Importance: Undecided => Low
** Changed in: nova/stein
Importance: Undecided => Medium
** Changed in: nova/rocky
Importance: Undecided => Medium
** Changed in: nova/train
Assignee: (unassigned) => sean mooney (sean-k-mooney)
** Changed in: nova/train
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1804502
Title:
Rebuild server with NUMATopologyFilter enabled fails (in some cases)
Status in OpenStack Compute (nova):
Fix Released
Status in OpenStack Compute (nova) queens series:
Triaged
Status in OpenStack Compute (nova) rocky series:
Triaged
Status in OpenStack Compute (nova) stein series:
Triaged
Status in OpenStack Compute (nova) train series:
In Progress
Bug description:
Description
===========
server rebuild will fail in nova scheduler on NUMATopologyFilter if the
computes do not have enough capacity (even though clearly the running server is
already accounted into that calculation)
to resolve the issue a fix is required in NUMATopologyFilter to not
perform the rebuild operation in the case that the request is due to
rebuild.
the result of such a case will be that server rebuild will fail with
error of "no valid host found"
(do not mix resize with rebuild functions...)
Steps to reproduce
==================
1. create a flavor that contain metadata that will point to a specific
compute (use host aggregate with same key:value metadata
make sure flavor contain topology related metadata:
hw:cpu_cores='1', hw:cpu_policy='dedicated', hw:cpu_sockets='6',
hw:cpu_thread_policy='prefer', hw:cpu_threads='1', hw:mem_page_size='large',
location='area51'
2. create a server on that compute (preferably using heat stack)
3. (try to) rebuild the server using stack update
4. issue reproduced
Expected result
===============
server in an active running state (if image was replaced in the rebuild
command than with a reference to the new image in the server details.
Actual result
=============
server in error state with error of no valid host found.
Message
No valid host was found. There are not enough hosts available.
Code
500
Details
File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 966,
in rebuild_instance return_alternates=False) File
"/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 723, in
_schedule_instances return_alternates=return_alternates) File
"/usr/lib/python2.7/site-packages/nova/scheduler/utils.py", line 907, in
wrapped return func(*args, **kwargs) File
"/usr/lib/python2.7/site-packages/nova/scheduler/client/__init__.py", line 53,
in select_destinations instance_uuids, return_objects, return_alternates) File
"/usr/lib/python2.7/site-packages/nova/scheduler/client/__init__.py", line 37,
in __run_method return getattr(self.instance, __name)(*args, **kwargs) File
"/usr/lib/python2.7/site-packages/nova/scheduler/client/query.py", line 42, in
select_destinations instance_uuids, return_objects, return_alternates) File
"/usr/lib/python2.7/site-packages/nova/scheduler/rpcapi.py", line 158, in
select_destinations return cctxt.call(ctxt, 'select_destinations', **msg_args)
File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 179,
in call retry=self.retry) File
"/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 133, in
_send retry=retry) File
"/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
584, in send call_monitor_timeout, retry=retry) File
"/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
575, in _send raise result
Environment
===========
detected in Rocky release
KVM hypervisor
Ceph storage
Neutron networks
Logs & Configs
==============
in nova.conf:
enabled_filters=AggregateInstanceExtraSpecsFilter,RetryFilter,AvailabilityZoneFilter,NUMATopologyFilter,PciPassthroughFilter,RamFilter,ComputeFilter,ImagePropertiesFilter,CoreFilter,ServerGroupAntiAffinityFilter,ServerGroupAffinityFilter,DiskFilter,ComputeCapabilitiesFilter,AggregateRamFilter,SameHostFilter,DifferentHostFilter
logs: tbd
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