Open Stack

display_name parameter  of volume


On Wed, Oct 16, 2013 at 10:55 AM, Swapnil Kulkarni <
swapnilkulkarni2608 at gmail.com> wrote:

> What exact parameters are you looking for?
>
>
>
> On Wed, Oct 16, 2013 at 10:48 AM, Dinakar Gorti Maruti <
> dinakar.gm at cloudbyte.co> wrote:
>
>> Hi Swapnil,
>>
>>                 I had tried it before , it is returning a string "volume"
>> followed by volume id
>>
>> Thanks
>> Dinakar
>>
>>
>> On Wed, Oct 16, 2013 at 10:31 AM, Swapnil Kulkarni <
>> swapnilkulkarni2608 at gmail.com> wrote:
>>
>>> Hi DInakar,
>>>
>>> Please use volume_name, volume_size,etc. These are volume related
>>> parameters frequently used in snapshots. You can always do *dir* to get
>>> any specific values you need.
>>>
>>> Best Regards,
>>> Swapnil
>>>
>>>
>>> On Wed, Oct 16, 2013 at 10:11 AM, Dinakar Gorti Maruti <
>>> dinakar.gm at cloudbyte.co> wrote:
>>>
>>>> hi,
>>>>    I am implementing a driver for cinder services and I am stuck with a
>>>> problem in creation of snapshot , I have a need to fetch the volume details
>>>> in snapshot creation.
>>>> I am using Openstack-Grizzly
>>>>
>>>> I am trying to use this line of code
>>>>
>>>> def create_snapshot(self, snapshot_ref):
>>>>       ..........
>>>>
>>>>       volume = snapshot_ref['volume']
>>>>
>>>>       ...........
>>>>
>>>>
>>>> Error :
>>>>
>>>> Traceback (most recent call last):
>>>>   File
>>>> "/usr/lib/python2.6/site-packages/cinder/openstack/common/rpc/amqp.py",
>>>> line 430, in _process_data
>>>>     rval = self.proxy.dispatch(ctxt, version, method, **args)
>>>>   File
>>>> "/usr/lib/python2.6/site-packages/cinder/openstack/common/rpc/dispatcher.py",
>>>> line 133, in dispatch
>>>>     return getattr(proxyobj, method)(ctxt, **kwargs)
>>>>   File "/usr/lib/python2.6/site-packages/cinder/volume/manager.py",
>>>> line 564, in create_snapshot
>>>>     {'status': 'error'})
>>>>   File "/usr/lib64/python2.6/contextlib.py", line 23, in __exit__
>>>>     self.gen.next()
>>>>   File "/usr/lib/python2.6/site-packages/cinder/volume/manager.py",
>>>> line 554, in create_snapshot
>>>>     model_update = self.driver.create_snapshot(snapshot_ref,volume_name)
>>>>   File
>>>> "/usr/lib/python2.6/site-packages/cinder/volume/drivers/cloudbyte.py", line
>>>> 195, in create_snapshot
>>>>     LOG.debug(_("phani volume object in snapshot :
>>>> %s"),snapshot_ref['volume'])
>>>>   File
>>>> "/usr/lib/python2.6/site-packages/cinder/db/sqlalchemy/models.py", line 74,
>>>> in __getitem__
>>>>     return getattr(self, key)
>>>>   File
>>>> "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/orm/attributes.py",
>>>> line 168, in __get__
>>>>     return self.impl.get(instance_state(instance),dict_)
>>>>   File
>>>> "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/orm/attributes.py",
>>>> line 453, in get
>>>>     value = self.callable_(state, passive)
>>>>   File
>>>> "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/orm/strategies.py",
>>>> line 481, in _load_for_state
>>>>     (mapperutil.state_str(state), self.key)
>>>>
>>>>
>>>>  DetachedInstanceError: Parent instance <Snapshot at 0x30a0cd0> is not
>>>> bound to a Session; lazy load operation of attribute 'volume' cannot proceed
>>>>
>>>> hoping for a solution
>>>>
>>>> Thanks
>>>> Dinakar
>>>>
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>>>>
>>>>
>>>
>>
>
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