Hi team, I know that Block Device Driver (BDD) is not popular in Cinder community. The main issues were: * driver is not good maintained * it doesn't feet minimum features set * there is no CI for it * it's not a Cinder way/it works only when instance and volume are created on the same host * etc AFAK, it's widely used in Sahara & Hadoop communities because it works fast. I won't discuss driver's performance in this thread. I share my performance tests results once I'll finish it. I'm going to share drive updates with you about issues above. 1) driver is not good maintained - we are working on it right now and will fix any found issues. We've got devstack plugin [1] for this driver. 2) it doesn't feet minimum features set - I've filed a blueprint [2] for it. There are patches that implement needed features in the gerrit [3]. 3) there is no CI for it - In Cinder community, we've got strong requirement that each driver must has CI. I've absolutely agree with that. That's why new infra job is proposed [4]. 4) it works only when instance and volume are created on the same host - I've filed a blueprint [5] but after testing I've found that it's already implemented by [6]. I hope, I've answered all questions that were asked in IRC and in comments for [6]. I will do my best to support this driver and propose fix to delete if community decide to delete it from the cinder tree [1] https://github.com/openstack/devstack-plugin-bdd [2] https://blueprints.launchpad.net/cinder/+spec/block-device-driver-minimum-features-set [3] https://review.openstack.org/#/q/status:open+project:openstack/cinder+branch:master+topic:bp/block-device-driver-minimum-features-set,n,z [4] https://review.openstack.org/228857 [5] https://blueprints.launchpad.net/cinder/+spec/block-device-driver-via-iscsi [6] https://review.openstack.org/#/c/200039/ Regards, Ivan Kolodyazhny -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150930/aa5cefa0/attachment.html>