[lttng-dev] Python lttngust module import error

[Lakshmi Deverkonda]

Hi,

I'm observing an issue recently wrt import of python3 lttng module.
Following is the error and need your help to find out what is wrong.

>>> import lttngust
Exception in thread system:
Traceback (most recent call last):
  File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.7/dist-packages/lttngust/agent.py", line 291, in _client_thread_target
    client = _TcpClient(name, _SESSIOND_HOST, port, reg_queue)
  File "/usr/local/lib/python3.7/dist-packages/lttngust/agent.py", line 76, in __init__
    raise e
  File "/usr/local/lib/python3.7/dist-packages/lttngust/agent.py", line 73, in __init__
    self._log_handler = lttngust.loghandler._Handler()
  File "/usr/local/lib/python3.7/dist-packages/lttngust/loghandler.py", line 32, in __init__
    self.agent_lib = ctypes.cdll.LoadLibrary(_Handler._LIB_NAME)
  File "/usr/lib/python3.7/ctypes/__init__.py", line 434, in LoadLibrary
    return self._dlltype(name)
  File "/usr/lib/python3.7/ctypes/__init__.py", line 356, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: liblttng-ust-python-agent.so: cannot open shared object file: No such file or directory


>>>

I have installed liblttng-ust-python-agent.so

/# ldconfig -p | grep liblttng
      liblttng-ust.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust.so.0
      liblttng-ust-tracepoint.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-tracepoint.so.0
      liblttng-ust-python-agent.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-python-agent.so.0
      liblttng-ust-pthread-wrapper.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-pthread-wrapper.so.0
      liblttng-ust-libc-wrapper.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-libc-wrapper.so.0
      liblttng-ust-fork.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-fork.so.0
      liblttng-ust-fd.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-fd.so.0
      liblttng-ust-dl.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-dl.so.0
      liblttng-ust-cyg-profile.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-cyg-profile.so.0
      liblttng-ust-cyg-profile-fast.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-cyg-profile-fast.so.0
      liblttng-ust-ctl.so.4 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ust-ctl.so.4
      liblttng-ctl.so.0 (libc6,x86-64) => /lib/x86_64-linux-gnu/liblttng-ctl.so.0


Regards,
Lakshmi
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