History

Gorka Eguileor 8469109016 RBD: Fix stats reporting

Current RBD code is incorrectly reporting the stats of the pool in the
following ways:

- `provisioned_capacity_gb` contains physical space used by cinder created
  volumes.
- `free_capacity_gb` is not taking into account that pools can have quota
  restrictions and they should be used as the reference for the free capacity.
- `total_capacity` dynamically changes, which means that there is no way to
  have a fixed over provisioning capacity.

This patch fixes the stats reporting making sure we return the right
values in `provisioned_capacity_gb` and `free_capacity_gb`, and allows
us to use a static calculation of the `total_capacity` using
`report_dynamic_total_capacity` configuration option.

We don't report `allocated_capacity_gb` because this is something that
is calculated by the Cinder core code and should not be reported by
drivers, even if it's not currently working as expected [1][2].

[1] https://bugs.launchpad.net/cinder/+bug/1712549
[2] https://bugs.launchpad.net/cinder/+bug/1706057

Change-Id: I1e82bf9d0b6cc0fb1d1fc2dd8b8ccc59aea3f73f
Closes-Bug: #1706060

2017-08-23 14:33:27 +02:00

notes

RBD: Fix stats reporting

2017-08-23 14:33:27 +02:00

source

Update reno for stable/pike

2017-08-11 02:53:02 +00:00

README.rst

Fix release notes link

2017-07-25 14:24:18 -07:00

README.rst

Release notes

The release notes for a patch should be included in the patch. The intended audience for release notes include deployers, administrators and end-users.

A release note is required if the patch has upgrade or API impact. It is also required if the patch adds a feature or fixes a long-standing or security bug.

Please see https://docs.openstack.org/cinder/latest/contributor/releasenotes.html for more details.