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[Bug 1285259] Re: After evacuate origin host still report a runing vm

 

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => juno-2

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https://bugs.launchpad.net/bugs/1285259

Title:
  After evacuate origin host still report a runing vm

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  After evacuate a host with one instance to a target host it still
  report there is an instance in that hypervisor

  Pre evacuate report:

  $ nova hypervisor-stats
  +----------------------+-------+
  | Property             | Value |
  +----------------------+-------+
  | count                | 2     |
  | current_workload     | 0     |
  | disk_available_least | 22    |
  | free_disk_gb         | 50    |
  | free_ram_mb          | 3860  |
  | local_gb             | 50    |
  | local_gb_used        | 0     |
  | memory_mb            | 4948  |
  | memory_mb_used       | 1088  |
  | running_vms          | 1     |
  | vcpus                | 3     |
  | vcpus_used           | 1     |
  +----------------------+-------+

  $ nova hypervisor-list
  +----+---------------------+
  | ID | Hypervisor hostname |
  +----+---------------------+
  | 1  | jmolle-Controller   |
  | 2  | jmolle-Node1        |
  +----+---------------------+

  $ nova hypervisor-show jmolle-Controller
  +---------------------------+-------------------------------------------------------+
  | Property                  | Value                                                 |
  +---------------------------+-------------------------------------------------------+
  | cpu_info_arch             | x86_64                                                |
  | cpu_info_features         | ["rdtscp", "hypervisor", "x2apic", "ss", "ds", "vme"] |
  | cpu_info_model            | Westmere                                              |
  | cpu_info_topology_cores   | 1                                                     |
  | cpu_info_topology_sockets | 2                                                     |
  | cpu_info_topology_threads | 1                                                     |
  | cpu_info_vendor           | Intel                                                 |
  | current_workload          | 0                                                     |
  | disk_available_least      | 10                                                    |
  | free_disk_gb              | 25                                                    |
  | free_ram_mb               | 3378                                                  |
  | host_ip                   | 192.168.41.101                                        |
  | hypervisor_hostname       | jmolle-Controller                                     |
  | hypervisor_type           | QEMU                                                  |
  | hypervisor_version        | 1000000                                               |
  | id                        | 1                                                     |
  | local_gb                  | 25                                                    |
  | local_gb_used             | 0                                                     |
  | memory_mb                 | 3954                                                  |
  | memory_mb_used            | 576                                                   |
  | running_vms               | 1                                                     |
  | service_host              | jmolle-Controller                                     |
  | service_id                | 4                                                     |
  | vcpus                     | 2                                                     |
  | vcpus_used                | 1                                                     |
  +---------------------------+-------------------------------------------------------+

  $ nova hypervisor-servers jmolle-Controller
  +--------------------------------------+-------------------+---------------+---------------------+
  | ID                                   | Name              | Hypervisor ID | Hypervisor Hostname |
  +--------------------------------------+-------------------+---------------+---------------------+
  | a3c291e5-05b0-43fc-b16b-121bf36f30c0 | instance-00000001 | 1             | jmolle-Controller   |
  +--------------------------------------+-------------------+---------------+---------------------+

  
  But after evacuate the instanse we get:

  $ nova hypervisor-stats
  +----------------------+-------+
  | Property             | Value |
  +----------------------+-------+
  | count                | 2     |
  | current_workload     | 1     |
  | disk_available_least | 22    |
  | free_disk_gb         | 50    |
  | free_ram_mb          | 3796  |
  | local_gb             | 50    |
  | local_gb_used        | 0     |
  | memory_mb            | 4948  |
  | memory_mb_used       | 1152  |
  | running_vms          | 2     |
  | vcpus                | 3     |
  | vcpus_used           | 2     |
  +----------------------+-------+

  here we see that now there are 2 running instances instead of one
  and if we use show command we get:

  $ nova hypervisor-show jmolle-Controller
  +---------------------------+-------------------------------------------------------+
  | Property                  | Value                                                 |
  +---------------------------+-------------------------------------------------------+
  | cpu_info_arch             | x86_64                                                |
  | cpu_info_features         | ["rdtscp", "hypervisor", "x2apic", "ss", "ds", "vme"] |
  | cpu_info_model            | Westmere                                              |
  | cpu_info_topology_cores   | 1                                                     |
  | cpu_info_topology_sockets | 2                                                     |
  | cpu_info_topology_threads | 1                                                     |
  | cpu_info_vendor           | Intel                                                 |
  | current_workload          | 0                                                     |
  | disk_available_least      | 10                                                    |
  | free_disk_gb              | 25                                                    |
  | free_ram_mb               | 3378                                                  |
  | host_ip                   | 192.168.41.101                                        |
  | hypervisor_hostname       | jmolle-Controller                                     |
  | hypervisor_type           | QEMU                                                  |
  | hypervisor_version        | 1000000                                               |
  | id                        | 1                                                     |
  | local_gb                  | 25                                                    |
  | local_gb_used             | 0                                                     |
  | memory_mb                 | 3954                                                  |
  | memory_mb_used            | 576                                                   |
  | running_vms               | 1                                                     |
  | service_host              | jmolle-Controller                                     |
  | service_id                | 4                                                     |
  | vcpus                     | 2                                                     |
  | vcpus_used                | 1                                                     |
  +---------------------------+-------------------------------------------------------+

  we also see 1 running instance
  but if we list servers we get 0

  $ nova hypervisor-servers jmolle-Controller
  +----+------+---------------+---------------------+
  | ID | Name | Hypervisor ID | Hypervisor Hostname |
  +----+------+---------------+---------------------+
  +----+------+---------------+---------------------+

  and the instance was evacuate to the other host correctly

  $ nova hypervisor-servers jmolle-Node1
  +--------------------------------------+-------------------+---------------+---------------------+
  | ID                                   | Name              | Hypervisor ID | Hypervisor Hostname |
  +--------------------------------------+-------------------+---------------+---------------------+
  | a3c291e5-05b0-43fc-b16b-121bf36f30c0 | instance-00000001 | 2             | jmolle-Node1        |
  +--------------------------------------+-------------------+---------------+---------------------+

  I think this is a nova bug due to the inconcistency of hypervisor-show
  and hypervisor-servers nova commands

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References