You want to enable the "show_image_direct_url = True" option.
full configuration information can be found
http://docs.ceph.com/docs/master/rbd/rbd-openstack/
On Thu, Mar 31, 2016 at 10:49 PM, Mario Codeniera
wrote:
> Hi,
>
> Is there anyone done thin provisioning on OpenStack instances (virtual
> machine)? Based on the current configurations, it works well with my cloud
> using ceph 0.94.5 with SSD journal (from 18mins to around 7 mins for
> creating an 40GB instance and not good SSD iops). But what I wanted is the
> storage space as it copied the whole image from Glance (40GB) to each newly
> created virtual machine, is there any chances that it will copy only the top
> changes? somewhat like a vmware-like snapshot, but still the base image is
> still there.
>
> Current setup:
> xxx --> (uploaded glance image, say Centos 7 with 40GB)
>
> if create an instance,
> xxx + yyy where yyy is the new changes
> (40GB + MB/GB changes)
>
>
> Plan setup:
> (it will save storage as it will not copy xxx)
> yyy is only stored on the ceph
>
>
> As per testing on current cloud, the OpenStack snapshot still copy the whole
> image + new changes. Correct me if wrong as still using the Kilo release
> (2015.1.1) or maybe it was a misconfiguration? And the more I added the
> users, the more OSDs will be added too.
>
> Any insights are highly appreciated.
>
>
> Thanks,
> Mario
>
>
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