This feature is pretty old (introduced in the Havana cycle if I remember correctly), I just never got the chance to play with it.
However I believe this feature could benefit to many users.
Let’s see how we can get the best of it.
Edit your glance-api.conf with:
[DEFAULT]
show_multiple_locations = True
enable_v2_api = True
location_strategy = location_order
Then restart glance-api.
At this point you should see the location of the image:
$ glance --os-image-api-version 2 image-show 90674766-dbaa-4a6e-a 344-2a4116af9fab +------------------+----------------------------------------------------------------------------------+ | Property | Value | +------------------+----------------------------------------------------------------------------------+ | checksum | 133eae9fb1c98f45894a4e60d8736619 | | container_format | bare | | created_at | 2015-05-06T09:29:40Z | | direct_url | rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa- | | | 4a6e-a 344-2a4116af9fab/snap | | disk_format | qcow2 | | id | 90674766-dbaa-4a6e-a 344-2a4116af9fab | | locations | [{"url" : "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa- | | | 4a6e-a344-2a4116af9fab/snap" , "metadata" : {}}] | | min_disk | 0 | | min_ram | 0 | | name | CirrOS-0.3.3 | | owner | 486ab7509bfd46c386d4a8353b80a08d | | protected | False | | size | 13200896 | | status | active | | tags | [] | | updated_at | 2015-05-06T09:29:41Z | | virtual_size | None | | visibility | private | +------------------+----------------------------------------------------------------------------------+
As you can see this image is stored in Ceph RBD using the following URI: rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa-4a6e-a344-2a4116af9fab/snap.
Now let’s try to add another location for this image.
Since the API call is not exposed in python-glanceclient, we need to use a regular API call.
For this, we can use curl and thus need to get a token:
$ keystone token-get +-----------+----------------------------------+ | Property | Value | +-----------+----------------------------------+ | expires | 2015-05-06T14:22:16Z | | id | 2602709084d64417b7f3480fccfa1785 | | tenant_id | 486ab7509bfd46c386d4a8353b80a08d | | user_id | 0b78d6793b1c4305ad6e76fa232b5a74 | +-----------+----------------------------------+
Add the image using curl:
$ curl -i -X PATCH -H 'Content-Type: application/openstack-images-v2.1-json-patch' \ -H "X-Auth-Token: 2602709084d64417b7f3480fccfa1785" \ http://192.168.0.60:9292/v2/images/90674766-dbaa-4a6e-a 344-2a4116af9fab \ -d '[{"op": "add", "path": "/locations/-", "value": {"url": "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/7bb0484c-cb6b-4700-88bb-0a18b8f3a8f5/snap", "metadata": {}}}]' HTTP/1.1 200 OK Content-Length: 955 Content-Type: application/json; charset=UTF-8 X-Openstack-Request-Id: req-req-29faba33-657e-4959-b508-fcffe8081d8f Date: Wed, 06 May 2015 14:21:21 GMT {"status" : "active" , "virtual_size" : null, "name" : "CirrOS-0.3.3" , "tags" : [], "container_format" : "bare" , "created_at" : "2015-05-06T09:29:40Z" , "size" : 13200896, "disk_format" : "qcow2" , "updated_at" : "2015-05-06T14:21:20Z" , "visibility" : "private" , "locations" : [{"url" : "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa-4a6e-a344-2a4116af9fab/snap" , "metadata" : {}}, {"url" : "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/7bb0484c-cb6b-4700-88bb-0a18b8f3a8f5/snap" , "metadata" : {}}], "self" : "/v2/images/90674766-dbaa-4a6e-a344-2a4116af9fab" , "min_disk" : 0, "protected" : false , "id" : "90674766-dbaa-4a6e-a344-2a4116af9fab" , "file" : "/v2/images/90674766-dbaa-4a6e-a344-2a4116af9fab/file" , "checksum" : "133eae9fb1c98f45894a4e60d8736619" , "owner" : "486ab7509bfd46c386d4a8353b80a08d" , "direct_url" : "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa-4a6e-a344
Check the image properties again:
$ glance --os-image-api-version 2 image-show 90674766-dbaa-4a6e-a 344-2a4116af9fab +------------------+----------------------------------------------------------------------------------+ | Property | Value | +------------------+----------------------------------------------------------------------------------+ | checksum | 133eae9fb1c98f45894a4e60d8736619 | | container_format | bare | | created_at | 2015-05-06T09:29:40Z | | direct_url | rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa- | | | 4a6e-a 344-2a4116af9fab/snap | | disk_format | qcow2 | | id | 90674766-dbaa-4a6e-a 344-2a4116af9fab | | locations | [{"url" : "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/90674766-dbaa- | | | 4a6e-a344-2a4116af9fab/snap" , "metadata" : {}}, {"url" : | | | "rbd://5de961fb-2368-4f77-8725-7b002732e214/images/7bb0484c-cb6b-4700-88bb- | | | 0a18b8f3a8f5/snap" , "metadata" : {}}] | | min_disk | 0 | | min_ram | 0 | | name | CirrOS-0.3.3 | | owner | 486ab7509bfd46c386d4a8353b80a08d | | protected | False | | size | 13200896 | | status | active | | tags | [] | | updated_at | 2015-05-06T14:21:20Z | | virtual_size | None | | visibility | private | +------------------+----------------------------------------------------------------------------------+
Several other options:
Delete a location: -d '[{"op": "remove", "path": "/locations/1"}]'
Add to a specific index: {"op": "add", "path": "/locations/2", "value": ... ...}
Et voilà !
Comments