Open Stack

FWIW, the most popular client libraries in the last user survey[1] other than OpenStack’s own clients were: libcloud (48 respondents), jClouds (36 respondents), Fog (34 respondents), php-opencloud (21 respondents), DeltaCloud (which has been retired by Apache and hasn’t seen a commit in two years, but 17 respondents are still using it), pkgcloud (15 respondents), and OpenStack.NET (14 respondents).  Of those:

* libcloud appears to support the nova-volume API but not the cinder API: https://github.com/apache/libcloud/blob/trunk/libcloud/compute/drivers/openstack.py#L251

* jClouds appears to support only the v1 API: https://github.com/jclouds/jclouds/tree/jclouds-1.9.1/apis/openstack-cinder/src/main/java/org/jclouds

* Fog also appears to only support the v1 API: https://github.com/fog/fog/blob/master/lib/fog/openstack/volume.rb#L99

* php-opencloud appears to only support the v1 API: https://php-opencloud.readthedocs.org/en/latest/services/volume/index.html

* DeltaCloud I honestly haven’t looked at since it’s thoroughly dead, but I can’t imagine it supports v2.

* pkgcloud has beta-level support for Cinder but I think it’s v1 (may be mistaken): https://github.com/pkgcloud/pkgcloud/#block-storage----beta and https://github.com/pkgcloud/pkgcloud/tree/master/lib/pkgcloud/openstack/blockstorage

* OpenStack.NET does appear to support v2: http://www.openstacknetsdk.org/docs/html/T_net_openstack_Core_Providers_IBlockStorageProvider.htm

Now, it’s anyone’s guess as to whether or not users of those client libraries actually try to use them for volume operations or not (anecdotally I know a few clouds I help support are using client libraries that only support v1), and some users might well be using more than one library or mixing in code they wrote themselves.  But most of the above that support cinder do seem to rely on v1.  Some management tools also appear to still rely on the v1 API (such as RightScale: http://docs.rightscale.com/clouds/openstack/openstack_config_prereqs.html ).  From that perspective it might be useful to keep it around a while longer and disable it by default.  Personally I’d probably lean that way, especially given that folks here on the ops list are still reporting problems too.

That said, v1 has been deprecated since Juno, and the Juno release notes said it was going to be removed [2], so there’s a case to be made that there’s been plenty of fair warning too I suppose.

[1] http://superuser.openstack.org/articles/openstack-application-developers-share-insights
[2] https://wiki.openstack.org/wiki/ReleaseNotes/Juno#Upgrade_Notes_7

At Your Service,

Mark T. Voelker



> On Sep 28, 2015, at 7:17 PM, Sam Morrison <sorrison at gmail.com> wrote:
> 
> Yeah we’re still using v1 as the clients that are packaged with most distros don’t support v2 easily.
> 
> Eg. with Ubuntu Trusty they have version 1.1.1, I just updated our “volume” endpoint to point to v2 (we have a volumev2 endpoint too) and the client breaks.
> 
> $ cinder list
> ERROR: OpenStack Block Storage API version is set to 1 but you are accessing a 2 endpoint. Change its value through --os-volume-api-version or env[OS_VOLUME_API_VERSION].
> 
> Sam
> 
> 
>> On 29 Sep 2015, at 8:34 am, Matt Fischer <matt at mattfischer.com> wrote:
>> 
>> Yes, people are probably still using it. Last time I tried to use V2 it didn't work because the clients were broken, and then it went back on the bottom of my to do list. Is this mess fixed?
>> 
>> http://lists.openstack.org/pipermail/openstack-operators/2015-February/006366.html
>> 
>> On Mon, Sep 28, 2015 at 4:25 PM, Ivan Kolodyazhny <e0ne at e0ne.info> wrote:
>> Hi all,
>> 
>> As you may know, we've got 2 APIs in Cinder: v1 and v2. Cinder v2 API was introduced in Grizzly and v1 API is deprecated since Juno.
>> 
>> After [1] is merged, Cinder API v1 is disabled in gates by default. We've got a filed bug [2] to remove Cinder v1 API at all.
>> 
>> 
>> According to Deprecation Policy [3] looks like we are OK to remote it. But I would like to ask Cinder API users if any still use API v1.
>> Should we remove it at all Mitaka release or just disable by default in the cinder.conf?
>> 
>> AFAIR, only Rally doesn't support API v2 now and I'm going to implement it asap.
>> 
>> [1] https://review.openstack.org/194726 
>> [2] https://bugs.launchpad.net/cinder/+bug/1467589
>> [3] http://lists.openstack.org/pipermail/openstack-dev/2015-September/073576.html
>> 
>> Regards,
>> Ivan Kolodyazhny
>> 
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