Open Stack

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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