Can't create volume from image in Openstack

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Quentin Hartman

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Feb 5, 2015, 1:47:02 PM2/5/15
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I'm able to create empty volumes just fine, but when I try to specify an image:

service = Fog::Compute.new({ auth stuff here})
v = service.create_volume('test volume','A testing volume created with fog', 5, {imageRef: '851ebad1-4cfe-468f-94a7-08dfc6b2d29d'})

It does not work correctly. I've been able to confirm on the server side that when the request comes in, the imageRef parameter is empty. I've tried several different permutations of passing the options, and the results are all the same. The code indicates that this should be supported: https://github.com/fog/fog/blob/master/lib/fog/openstack/requests/volume/create_volume.rb

It seems that fog is not passing this through the nova-api, which would seem to be correct as the volumes extension of nova-api does not seem to support the imageRef option. (Here's the API reference: http://developer.openstack.org/api-ref-compute-v2-ext.html)

If I hit cinder directly though, it works as expected. For example:

Hitting nova-api's volume extension with a curl reconstruction of the call that fog makes, even with the imageref and bootable flags added, creates an empty volume: curl -s -H "X-Auth-Token: $TOKEN" -X POST -H "Content-Type: application/json" http://openstack-api.local:8774/v2/b5901343f263457aab3ef432fae3c656/os-volumes -d "{\"volume\":{\"display_name\":\"test volume\",\"display_description\":\"A testing volume created with fog\",\"size\":5,\"imageRef\":\"851ebad1-4cfe-468f-94a7-08dfc6b2d29d\",\"bootable\":true}}"

Hitting cinder-api with curl, and the identical request (except hitting /volumes instead of /os-volumes since I'm no longer using the nova volumes extension), creates a volume from the image as expected: curl -s -H "X-Auth-Token: $TOKEN" -X POST -H "Content-Type: application/json" http://openstack-api.local:8776/v2/b5901343f263457aab3ef432fae3c656/volumes -d "{\"volume\":{\"display_name\":\"test volume\",\"display_description\":\"A testing volume created with fog\",\"size\":5,\"imageRef\":\"851ebad1-4cfe-468f-94a7-08dfc6b2d29d\",\"bootable\":true}}"

It seems like with Fog, we should be making this request to the cinder endpoint rather than the nova endpoint.
Is this something I'm doing wrong? Should I be doing something else to create a volume from an image in Fog, or is it a bug in Fog?

Any thoughts or input would be helpful.

QH
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