Glance Image Cache for Cinder with FlashArray iSCSI/FC as a Cinder Backend

The following checklist provides the steps necessary for configuration of Glance Image Cache for Cinder with FlashArray for iSCSI or Fibre Channel:

Step

Description of Step

Done?

1

Configure internal tenant settings in cinder.conf

2

Configure Image-Volume cache setting in cinder.conf

3

Restart Cinder and Glance services

4

Upload a Glance Image

5

Boot from Cinder

6

Verify functionality

Table 5.1: Checklist of Steps for Enhanced Instance Creation


  1. Configure internal tenant settings in cinder.conf

Obtain the cinder_internal_tenant_project_id

$ openstack service list
+----------------------------------+-------------+----------------+
| ID                               | Name        | Type           |
+----------------------------------+-------------+----------------+
| 185c30110a134e599b744e2d084504f6 | glance      | image          |
| 455f9e2b1440450fb016619a08b57a0f | cinderv2    | volumev2       |
| 541701f5857e4ba5ac8256ff45ce183b | neutron     | network        |
| 54749405a293416da8156469e1673c06 | cinderv3    | volumev3       |
| 7f133836fbb1458e9e4acac04269d5c8 | placement   | placement      |
| 94cfcb74a6d04e5fae66e06dc05b77b2 | cinder      | block-storage  |
| 94ddb7fa2daa4d1eac82814e6d1467f1 | keystone    | identity       |
| 9ef1d17fe1154994bf0aaba6a05b8045 | nova        | compute        |
| c80cdd3eff674a9fb52d26a9f04fdc6d | nova_legacy | compute_legacy |
+----------------------------------+-------------+----------------+

Edit cinder.conf to contain the following entry in the DEFAULT stanza

[DEFAULT]
...
cinder_internal_tenant_project_id=6763e676132f4aaabb68cc1517b18d38
...

Obtain the cinder_internal_tenant_user_id

$ openstack user list
+----------------------------------+----------+
| ID                               | Name     |
+----------------------------------+----------+
| c008a02d553a4f9595d8437da67996b4 | admin    |
+----------------------------------+----------+

Edit cinder.conf to contain the following entry in the DEFAULT stanza

[DEFAULT]
...
cinder_internal_tenant_user_id=a05232baaeda49b589b11a3198efb054
...

  1. Configure Image-Volume cache settings in the FlashArray stanza in cinder.conf

[FA-1]
...
image_volume_cache_enabled = True
...

  1. Restart Cinder services

$ systemctl restart openstack-cinder-{api,scheduler,volume}

Note

Depending on your deployment mechanism the cinder service names may vary. Refer to your deployment installation guide for more information.

  1. Upload a Glance image

The following command uses an image that is publicly available. Please use the image you prefer and replace the URL accordingly.

$ wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64-disk-kvm.img | openstack image create ubuntu-focal-image --container-format bare --disk-format qcow2 --file focal-server-cloudimg-amd64-disk-kvm.img --min-disk 3

  1. Boot from Cinder

$ nova boot --flavor m1.medium --key-name openstack_key --nic net-id=replace-with-neutron-net-id --block-device source=image,id=replace-with-glance-image-id,dest=volume,shutdown=preserve,bootindex=0,size=5  ubuntu-vm

  1. Verify functionality

Please open /var/log/cinder/volume.log and look for a message similar to the following to confirm that the image-volume was cached successfully:

...
2016-09-30 16:38:52.211 DEBUG cinder.volume.flows.manager.create_volume [req-9ea8022f-1dd4-4203-b1f3-019f3c1b377a None None] Downloaded image 16d996d3-87aa-47da-8c82-71a21e8a06fb ((None, None)) to volume 6944e5be-7c56-4a7d-a90b-5231e7e94a6e successfully. from (pid=20926) _copy_image_to_volume /opt/stack/cinder/cinder/volume/flows/manager/create_volume.py
...

  1. Additional Options

For additional configuration options and details refer to the Pure Glance Image Cache whitepaper.