Problem with mount encrypted volume

[Solntsev]

Hello.
Trying to mount an encrypted volume, as a result, I get a message that there is no disk space, folder mounted ( sometimes i do not see rule) and I see no data. ( clear folder ( SMB share ) But in folder 6 tb information.
Yes, an encrypted partition is full, I did not keep track of this. But I need data from him.
How can I get information from a disk? Configuration 160 GB boot disk. and 6 * 2tb raid 1 ( hp microserver g10)

How can I get the data
Why I get this problem.


Environment:

Software Version: FreeNAS-11.1-RELEASE (dc7d195f4)
Request Method: POST
Request URL: http://192.168.88.54/storage/volume/4/unlock/?X-Progress-ID=7f9bde05-d35b-4a42-8a7e-772d1a5d11e6


Traceback:
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
42. response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _legacy_get_response
249. response = self._get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
178. response = middleware_method(request, callback, callback_args, callback_kwargs)
File "./freenasUI/freeadmin/middleware.py" in process_view
162. return login_required(view_func)(request, *view_args, **view_kwargs)
File "/usr/local/lib/python3.6/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "./freenasUI/storage/views.py" in volume_unlock
1005. form.done(volume=volume)
File "./freenasUI/storage/forms.py" in done
2799. _notifier.restart("system_datasets")
File "./freenasUI/middleware/notifier.py" in restart
223. return c.call('service.restart', what, {'onetime': onetime}, **kwargs)
File "./freenasUI/middleware/notifier.py" in restart
223. return c.call('service.restart', what, {'onetime': onetime}, **kwargs)
File "/usr/local/lib/python3.6/site-packages/middlewared/client/client.py" in call
394. raise ClientException(c.error, c.errno, c.trace, c.extra)

Exception Type: ClientException at /storage/volume/4/unlock/
Exception Value: [Errno 28] No space left on device: '/var/db/system/cores'

 

[dlavigne]

What is the current location of the System -> System Dataset?

 

[Solntsev]

What is the current location of the System -> System Dataset?

 

[Solntsev]

also, I see "smb" folder ( win 10\7 can autorize ) , but nothing inside.
this problem was earlier ( 3 month ago ) and i reinstall freenas. there is backups of VM. ) they are working fine, and i can make new backups, but i want to resolve this problem.