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Writing a sensible test for this api is rather tricky, since it is intended
to clean up one very specific error condition, and has few guarantees about
the state it leaves the system in. It is provided as a tool to allow the
system administrator to clean up certain faults and situations without
needing to manually effort the database, however the conditions under which
it is safe to use, and the cleanup actions that are required after calling
it, vary between backends.

The only test I can think of that is  probably safe across all backends is
to call reserve, create_export, reset then delete. (All directly against
the cinder endpoint with no Nova involvement).

There is a substantial danger in the thinking that this call is any sort of
generic fixup - it will happily leave volumes attached behind the scenes,
open to data corruption.

On 18 Sep 2016 05:48, "joehuang" <joehuang at huawei.com> wrote:

> Hello, Ken,
>
> Thank you for your information, for APIs without tempest test cases,
> it's due to hard to build the test environment, or it's just for the API
> is not mature enough? I want to know why the tempest test cases
> were not added at the same time when the features were implemented.
>
> Best Regards
> Chaoyi Huang(joehuang)
> ________________________________________
> From: Ken'ichi Ohmichi [ken1ohmichi at gmail.com]
> Sent: 15 September 2016 2:02
> To: OpenStack Development Mailing List (not for usage questions)
> Subject: Re: [openstack-dev] [cinder]tempest test case for force detach
> volume
>
> Hi Chaoyi,
>
> That is a nice point.
> Now Tempest have tests for some volume v2 action APIs which doesn't
> contain os-force_detach.
> The available APIs of tempest are two: os-set_image_metadata and
> os-unset_image_metadata like
> https://github.com/openstack/tempest/blob/master/tempest/
> services/volume/v2/json/volumes_client.py#L27
> That is less than I expected by comparing the API reference.
>
> The corresponding API tests' patches are welcome if interested in :-)
>
> Thanks
> Ken Ohmichi
>
> ---
>
>
> 2016-09-13 17:58 GMT-07:00 joehuang <joehuang at huawei.com>:
> > Hello,
> >
> > Is there ant tempest test case for "os-force_detach" action to force
> detach
> > a volume? I didn't find such a test case both in the repository
> > https://github.com/openstack/cinder/tree/master/cinder/tests/tempest
> > and https://github.com/openstack/tempest
> >
> > The API link is:
> > http://developer.openstack.org/api-ref-blockstorage-v2.
> html#forcedetachVolume
> >
> > Best Regards
> > Chaoyi Huang(joehuang)
> >
> >
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