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[Kosal Raj I <1767315@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========
"openstack hypervisor stats show" shows wrong memory information
Steps to reproduce
==================
- The deployment is done through tripleo-quickstart for openstack queens

(overcloud) [stack@undercloud ~]$ openstack hypervisor stats show
+----------------------+-------+
| Field                | Value |
+----------------------+-------+
| count                | 1     |
| current_workload     | 0     |
| disk_available_least | 43    |
| free_disk_gb         | 49    |
| free_ram_mb          | -49   |
| local_gb             | 49    |
| local_gb_used        | 0     |
| memory_mb            | 4047  |
| memory_mb_used       | 4096  |
| running_vms          | 0     |
| vcpus                | 2     |
| vcpus_used           | 0     |
+----------------------+-------+
(overcloud) [stack@undercloud ~]$ 

[root@overcloud-novacompute-0 ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:           3742         556         203           1        2982        2688
Swap:             0           0           0
[root@overcloud-novacompute-0 ~]# 


Expected result
===============
Should leverage the actual available memory.

Actual result
=============
Showing wrong memory value.


Environment
===========
- Openstack queens

[heat-admin@overcloud-novacompute-0 ~]$ rpm -qa | grep nova
openstack-nova-placement-api-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
python-nova-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
puppet-nova-12.4.1-0.20180423041756.95ca7cd.el7.centos.noarch
openstack-nova-scheduler-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
python2-novaclient-9.1.1-0.20180213141814.a1c0074.el7.centos.noarch
openstack-nova-conductor-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
openstack-nova-migration-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
openstack-nova-console-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
openstack-nova-common-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
openstack-nova-compute-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
openstack-nova-api-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
openstack-nova-novncproxy-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
[heat-admin@overcloud-novacompute-0 ~]$ 

Logs & Configs
==============
- default configuration

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1767315

Title:
  "openstack hypervisor stats show" shows wrong memory information

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  "openstack hypervisor stats show" shows wrong memory information
  Steps to reproduce
  ==================
  - The deployment is done through tripleo-quickstart for openstack queens

  (overcloud) [stack@undercloud ~]$ openstack hypervisor stats show
  +----------------------+-------+
  | Field                | Value |
  +----------------------+-------+
  | count                | 1     |
  | current_workload     | 0     |
  | disk_available_least | 43    |
  | free_disk_gb         | 49    |
  | free_ram_mb          | -49   |
  | local_gb             | 49    |
  | local_gb_used        | 0     |
  | memory_mb            | 4047  |
  | memory_mb_used       | 4096  |
  | running_vms          | 0     |
  | vcpus                | 2     |
  | vcpus_used           | 0     |
  +----------------------+-------+
  (overcloud) [stack@undercloud ~]$ 

  [root@overcloud-novacompute-0 ~]# free -m
                total        used        free      shared  buff/cache   available
  Mem:           3742         556         203           1        2982        2688
  Swap:             0           0           0
  [root@overcloud-novacompute-0 ~]# 

  
  Expected result
  ===============
  Should leverage the actual available memory.

  Actual result
  =============
  Showing wrong memory value.

  
  Environment
  ===========
  - Openstack queens

  [heat-admin@overcloud-novacompute-0 ~]$ rpm -qa | grep nova
  openstack-nova-placement-api-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  python-nova-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  puppet-nova-12.4.1-0.20180423041756.95ca7cd.el7.centos.noarch
  openstack-nova-scheduler-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  python2-novaclient-9.1.1-0.20180213141814.a1c0074.el7.centos.noarch
  openstack-nova-conductor-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  openstack-nova-migration-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  openstack-nova-console-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  openstack-nova-common-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  openstack-nova-compute-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  openstack-nova-api-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  openstack-nova-novncproxy-17.0.3-0.20180420001136.bf0a069.el7.centos.noarch
  [heat-admin@overcloud-novacompute-0 ~]$ 

  Logs & Configs
  ==============
  - default configuration

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