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Hi Zhidong,

Unfortunately stable/kilo branch is opened only for security fixes now. So
we can't backport this fix.

Regards,
Ivan Kolodyazhny,
http://blog.e0ne.info/

On Mon, Nov 23, 2015 at 4:43 AM, Zhidong Yu <zdyu2000 at gmail.com> wrote:

> It seems there was a bug introduced in Kilo and then fixed in Liberty [6].
> However, since there are more users of Kilo than of Liberty, I am wondering
> if the fix has been back ported to Kilo. I could not find it except for
> this one [7] which seems to be a different issue.
>
> [6] https://review.openstack.org/#/c/200039/
> [7] https://bugs.launchpad.net/cinder/+bug/1465819
>
> On Thu, Oct 1, 2015 at 3:00 AM, Ivan Kolodyazhny <e0ne at e0ne.info> wrote:
>
>> 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
>>
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>
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