RFE: report free storage

[Miroslav Suchý]

It is not easy to get information about available free and used storage. Especially if you use multiple Cinder backends. It would be nice if Cinder can report used across all backend drivers. E.g.:

# cinder free
+----+--------+--------------+------+
| backend_name | Used | Free | Total |
+- ---------------+--------+--------+--------+
| LVM | 500 GB | 1TB | 1,5 TB |
+- ---------------+--------+--------+--------+
| EqualLogic | 1 TB | 4TB | 5 TB |
+- ---------------+--------+--------+--------+
| Total | 1,5 TB | 5TB | 6,5 TB |
+- ---------------+--------+--------+--------+

And if this information can be exported to Horizon, then even better.

[Vincent Hou (houshengbo)]

I think this could be put in Wishlist.

[John Griffith (john-griffith)]

May end up needing to be a spec or BP but we'll see what we can put together. This has been a shortcoming for quite a while, I think we finally have enough people agreeing that it needs to be addressed.

[Sean McGinnis (sean-mcginnis)]

Automatically unassigning due to inactivity.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/301444

[OpenStack Infra (hudson-openstack)]

Change abandoned by Nate Potter (<email address hidden>) on branch: master
Review: https://review.openstack.org/301444
Reason: API exists for this functionality already, 'cinder get-pools --detail'.

[attila123 (vangel-attila)]

Sorry to necrobump, may help the googlers:
For me the mentioned command 'cinder get-pools --detail' returned an error:
"ERROR: Policy doesn't allow scheduler_extension:scheduler_stats:get_pools to be performed. (HTTP 403) (Request-ID: req-d2ae2472-b49d-4e67-889e-e396b004a4a2)"

So if there is no permission for that, the following may be useful (I got the tip from a colleague):
'openstack limits show --absolute --sort-column Name | grep Gigabytes'
(I just wanted to have a command to get the used volume storage)