Comment 2 for bug 1705611

Tks gorka

In this case ,i create a 1GB volume in ceph2. And then use CLI "cinder get-pools --detail" see allocated_capacity_gb as follows:

[root@CG_CEPH ~(keystone_admin)]# cinder get-pools --detail
+-----------------------+----------------------------+
| Property | Value |
+-----------------------+----------------------------+
| allocated_capacity_gb | 2 |
| driver_version | 1.2.0 |
| filter_function | None |
| free_capacity_gb | 18511.51 |
| goodness_function | None |
| multiattach | True |
| name | cinder@ceph#ceph |
| pool_name | ceph |
| reserved_percentage | 0 |
| storage_protocol | ceph |
| timestamp | 2017-07-22T09:52:53.998642 |
| total_capacity_gb | 18512.04 |
| vendor_name | Open Source |
| volume_backend_name | ceph |
+-----------------------+----------------------------+
+-----------------------+----------------------------+
| Property | Value |
+-----------------------+----------------------------+
| allocated_capacity_gb | 2 |
| driver_version | 1.2.0 |
| filter_function | None |
| free_capacity_gb | 18511.51 |
| goodness_function | None |
| multiattach | True |
| name | cinder@ceph2#ceph2 |
| pool_name | ceph2 |
| reserved_percentage | 0 |
| storage_protocol | ceph |
| timestamp | 2017-07-22T09:53:31.180495 |
| total_capacity_gb | 18512.51 |
| vendor_name | Open Source |
| volume_backend_name | ceph2 |
+-----------------------+----------------------------+

second step:

After migrating volume to ceph. use CLI "cinder get-pools --detail" see allocated_capacity_gb as follows:

[root@CG_CEPH ~(keystone_admin)]# cinder get-pools --detail
+-----------------------+----------------------------+
| Property | Value |
+-----------------------+----------------------------+
| allocated_capacity_gb | 3 |
| driver_version | 1.2.0 |
| filter_function | None |
| free_capacity_gb | 18510.02 |
| goodness_function | None |
| multiattach | True |
| name | cinder@ceph#ceph |
| pool_name | ceph |
| reserved_percentage | 0 |
| storage_protocol | ceph |
| timestamp | 2017-07-22T09:57:54.111857 |
| total_capacity_gb | 18511.55 |
| vendor_name | Open Source |
| volume_backend_name | ceph |
+-----------------------+----------------------------+
+-----------------------+----------------------------+
| Property | Value |
+-----------------------+----------------------------+
| allocated_capacity_gb | 2 |
| driver_version | 1.2.0 |
| filter_function | None |
| free_capacity_gb | 18510.02 |
| goodness_function | None |
| multiattach | True |
| name | cinder@ceph2#ceph2 |
| pool_name | ceph2 |
| reserved_percentage | 0 |
| storage_protocol | ceph |
| timestamp | 2017-07-22T09:58:31.185126 |
| total_capacity_gb | 18511.02 |
| vendor_name | Open Source |
| volume_backend_name | ceph2 |
+-----------------------+----------------------------+

the allocated_capacity_gb in ceph increased but ceph2 remain the same.This confusing.So it maybe a question。