Usage summary not reduce when delete error instances

[Jiang]

I create an instance on openstack ocata, but failed. Then the instance status is Error. If I delete the instance, the usage summary should be reduce, but it unchanged. if the usage equals limit, I can not create any instances anymore.

[Jiang (jiangpf)]

hello, maybe you can create a flavor with very big RAM. Then use the flavor to create a instance, you can get a instance with error state. Finally, delete the instance, you can get the problem.

[Ritesh Paiboina (rsritesh)]

Hi,

Tried today in the current master

The problem what you have seen in the dashboard (Horizon) cannot been seen in openstack / nova cli commands.

Seems to be specific to dashboard or old version of the projects.

Please try in the Master branch.

[Akihiro Motoki (amotoki)]

Horizon does not store any usage data. The limit summary is based on data returned by nova API.

In the project overview, two nova API is used: tenant_absolute_limit [1] which corresponds to NOVACLIENT.limits.get(reserved=True).absolute (where NOVACLIENT is a client instance).
Note that Nova API v2.0 is used.

The corresponding command line is "nova limits --reserved".

If this happens, you need to check what limits nova returns.

[1] https://github.com/openstack/horizon/blob/master/openstack_dashboard/usage/base.py#L201

[Akihiro Motoki (amotoki)]

Horizon depends on what Nova returns, so I think this is an issue in nova. Retargeting the bug to Nova.