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[Yingji Sun <1893864@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========
In recent code of Train, the VMs booted runs into ERROR state The synchronize the placement service with resource provider information supplied by the compute host fails

This is caused by the "/" operation difference between python 2.x and
python 3.x

In python 2.x "/" int / int returns int while
in python 3.x int / int return the real result.

Environment
===========
vmware setup

Logs & Configs
==============

^[[01;31mERROR nova.scheduler.client.report [^[[01;36mNone req-030a4d73-5bf1-4080-8b39-d637270055e0 ^[[00;36madmin admin^[[01;31m] ^[[01;35m^[[01;31m[req-b1da7c1f-6f45-412c-9740-0f27495b1f23] Failed to update inventory to [{'VCPU': {'total': 12, 'reserved': 0, 'min_unit': 1, 'max_unit': 4, 'step_size': 1, 'allocation_ratio': 100.0}, 'MEMORY_MB': {'total': 49149, 'reserved': 512, 'min_unit': 1, 'max_unit': 16383, 'step_size': 1, 'allocation_ratio': 1.5}, 'DISK_GB': {'total': 3025, 'reserved': 0, 'min_unit': 1, 'max_unit': 0, 'step_size': 1, 'allocation_ratio': 1.0}}] for resource provider with UUID 33c124a0-1ebc-4a36-a1fd-b6cd9d104c49.  Got 400: {"errors": [{"status": 400, "title": "Bad Request", "detail": "The server could not comply with the request since it is either malformed or otherwise incorrect.\n\n JSON does not validate: 0 is less than the minimum of 1  Failed validating 'minimum' in schema['properties']['inventories']['patternProperties']['^[A-Z0-9_]+$']['properties']['max_unit']:     {'maximum': 2147483647, 'minimum': 1, 'type': 'integer'}  On instance['inventories']['DISK_GB']['max_unit']:     0  ", "code": "placement.undefined_code", "request_id": "req-b1da7c1f-6f45-412c-9740-0f27495b1f23"}]}^[[00m^[[00m
^[[00;32mDEBUG oslo_concurrency.lockutils [^[[01;36mNone req-030a4d73-5bf1-4080-8b39-d637270055e0 ^[[00;36madmin admin^[[00;32m] ^[[01;35m^[[00;32mLock "compute_resources" released by "nova.compute.resource_tracker.ResourceTracker.instance_claim" :: held 1.016s^[[00m ^[[00;33m{{(pid=6347) inner /usr/local/lib/python3.6/dist-packages/oslo_concurrency/lockutils.py:339}}^[[00m^[[00m
^[[01;31mERROR nova.compute.manager [^[[01;36mNone req-030a4d73-5bf1-4080-8b39-d637270055e0 ^[[00;36madmin admin^[[01;31m] ^[[01;35m[instance: e5083b01-f490-4031-b25c-edd6d86dd62f] ^[[01;31mFailed to build and run instance^[[00m: nova.exception.ResourceProviderSyncFailed: Failed to synchronize the placement service with resource provider information supplied by the compute host.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1893864

Title:
  resolve ResourceProviderSyncFailed issue in python3

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  In recent code of Train, the VMs booted runs into ERROR state The synchronize the placement service with resource provider information supplied by the compute host fails

  This is caused by the "/" operation difference between python 2.x and
  python 3.x

  In python 2.x "/" int / int returns int while
  in python 3.x int / int return the real result.

  Environment
  ===========
  vmware setup

  Logs & Configs
  ==============

  ^[[01;31mERROR nova.scheduler.client.report [^[[01;36mNone req-030a4d73-5bf1-4080-8b39-d637270055e0 ^[[00;36madmin admin^[[01;31m] ^[[01;35m^[[01;31m[req-b1da7c1f-6f45-412c-9740-0f27495b1f23] Failed to update inventory to [{'VCPU': {'total': 12, 'reserved': 0, 'min_unit': 1, 'max_unit': 4, 'step_size': 1, 'allocation_ratio': 100.0}, 'MEMORY_MB': {'total': 49149, 'reserved': 512, 'min_unit': 1, 'max_unit': 16383, 'step_size': 1, 'allocation_ratio': 1.5}, 'DISK_GB': {'total': 3025, 'reserved': 0, 'min_unit': 1, 'max_unit': 0, 'step_size': 1, 'allocation_ratio': 1.0}}] for resource provider with UUID 33c124a0-1ebc-4a36-a1fd-b6cd9d104c49.  Got 400: {"errors": [{"status": 400, "title": "Bad Request", "detail": "The server could not comply with the request since it is either malformed or otherwise incorrect.\n\n JSON does not validate: 0 is less than the minimum of 1  Failed validating 'minimum' in schema['properties']['inventories']['patternProperties']['^[A-Z0-9_]+$']['properties']['max_unit']:     {'maximum': 2147483647, 'minimum': 1, 'type': 'integer'}  On instance['inventories']['DISK_GB']['max_unit']:     0  ", "code": "placement.undefined_code", "request_id": "req-b1da7c1f-6f45-412c-9740-0f27495b1f23"}]}^[[00m^[[00m
  ^[[00;32mDEBUG oslo_concurrency.lockutils [^[[01;36mNone req-030a4d73-5bf1-4080-8b39-d637270055e0 ^[[00;36madmin admin^[[00;32m] ^[[01;35m^[[00;32mLock "compute_resources" released by "nova.compute.resource_tracker.ResourceTracker.instance_claim" :: held 1.016s^[[00m ^[[00;33m{{(pid=6347) inner /usr/local/lib/python3.6/dist-packages/oslo_concurrency/lockutils.py:339}}^[[00m^[[00m
  ^[[01;31mERROR nova.compute.manager [^[[01;36mNone req-030a4d73-5bf1-4080-8b39-d637270055e0 ^[[00;36madmin admin^[[01;31m] ^[[01;35m[instance: e5083b01-f490-4031-b25c-edd6d86dd62f] ^[[01;31mFailed to build and run instance^[[00m: nova.exception.ResourceProviderSyncFailed: Failed to synchronize the placement service with resource provider information supplied by the compute host.

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