Why won't the notebook start in a new datalab account?

Question

Traceback (most recent call last):
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/notebook/base/handlers.py", line 516, in wrapper
    result = yield gen.maybe_future(method(self, *args, **kwargs))
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1063, in run
    yielded = self.gen.throw(*exc_info)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/notebook/services/sessions/handlers.py", line 75, in post
    type=mtype))
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1063, in run
    yielded = self.gen.throw(*exc_info)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1063, in run
    yielded = self.gen.throw(*exc_info)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 1055, in run
    value = future.result()
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/concurrent.py", line 238, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 4, in raise_exc_info
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/tornado/gen.py", line 307, in wrapper
    yielded = next(result)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/notebook/services/kernels/kernelmanager.py", line 94, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/jupyter_client/manager.py", line 257, in start_kernel
    **kw)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/jupyter_client/manager.py", line 203, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "/data0/sw/anaconda3/lib/python3.6/site-packages/jupyter_client/launcher.py", line 128, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "/data0/sw/anaconda3/lib/python3.6/subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "/data0/sw/anaconda3/lib/python3.6/subprocess.py", line 1333, in _execute_child
    raise child_exception_type(errno_num, err_msg)
OSError: [Errno 116] Stale file handle

Answer 1

This particular problem should now be resolved and was due to NFS disk issues on the server.  Since the question was posted anonymously it was awaiting moderator approval and we apologize for the delayed response; in the future an email to datalab@noao.edu or logging in under your user account to post questions are alternative ways to get help.