Hi nova devs,
How can I use placement api's if my instance path is mounted on shared storage
server (e.g. NFS)?
I am trying to set multinode setup with NFS shared storage for all nodes to
share disk resources along with placement services. As of now it is creating
resource providers for each of the compute node and adds the DISK_GB for each
resource provider.
For example below are my environment details:
NODE A: compute
NODE B: controller + compute
Following entries are made in resource_providers table:
+---------------------+---------------------+----+--------------------------------------+------------------------+------------+----------+
| created_at | updated_at | id | uuid
| name | generation | can_host |
+---------------------+---------------------+----+--------------------------------------+------------------------+------------+----------+
| 2017-01-30 06:49:17 | 2017-01-30 09:12:06 | 1 |
6cbbaf2b-5b8c-4f38-8b34-ee23791056a6 | openstack-VirtualBox | 3 |
0 |
| 2017-01-30 09:02:29 | 2017-01-30 09:11:03 | 3 |
bad71c26-8f36-43ea-abf4-bdbeffda9e54 | openstack-VirtualBox-1 | 2 |
0 |
+---------------------+---------------------+----+--------------------------------------+------------------------+------------+----------+
Following are the entries of inventories tables, of which 89 indicates the
DISK_GB (size of shared storage):
+---------------------+---------------------+----+----------------------+-------------------+-------+----------+----------+----------+-----------+------------------+
| created_at | updated_at | id | resource_provider_id |
resource_class_id | total | reserved | min_unit | max_unit | step_size |
allocation_ratio |
+---------------------+---------------------+----+----------------------+-------------------+-------+----------+----------+----------+-----------+------------------+
| 2017-01-30 06:49:19 | 2017-01-30 09:10:37 | 1 | 1 |
0 | 1 | 0 | 1 | 1 | 1 |
16 |
| 2017-01-30 06:49:19 | 2017-01-30 09:10:37 | 2 | 1 |
1 | 11210 | 512 | 1 | 11210 | 1 |
1.5 |
| 2017-01-30 06:49:19 | 2017-01-30 09:10:37 | 3 | 1 |
2 | 89 | 0 | 1 | 89 | 1 |
1 |
| 2017-01-30 09:02:31 | 2017-01-30 09:11:03 | 7 | 3 |
0 | 1 | 0 | 1 | 1 | 1 |
16 |
| 2017-01-30 09:02:31 | 2017-01-30 09:11:03 | 8 | 3 |
1 | 10253 | 512 | 1 | 10253 | 1 |
1.5 |
| 2017-01-30 09:02:31 | 2017-01-30 09:11:03 | 9 | 3 |
2 | 89 | 0 | 1 | 89 | 1 |
1 |
+---------------------+---------------------+----+----------------------+-------------------+-------+----------+----------+----------+-----------+------------------+
However still I am able to create the instances over the size of actual shared
storage.
Please let me know how to configure resource_providers in case of shared
storage servers are used for disk resources.
Thank you,
Bhagyashri
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