* [lttng-dev] Python lttngust module import error
@ 2023-12-26 16:19 Lakshmi Deverkonda via lttng-dev
2024-01-08 15:10 ` Kienan Stewart via lttng-dev
2024-01-08 16:52 ` Michael Jeanson via lttng-dev
0 siblings, 2 replies; 3+ messages in thread
From: Lakshmi Deverkonda via lttng-dev @ 2023-12-26 16:19 UTC (permalink / raw)
To: lttng-dev
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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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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [lttng-dev] Python lttngust module import error
2023-12-26 16:19 [lttng-dev] Python lttngust module import error Lakshmi Deverkonda via lttng-dev
@ 2024-01-08 15:10 ` Kienan Stewart via lttng-dev
2024-01-08 16:52 ` Michael Jeanson via lttng-dev
1 sibling, 0 replies; 3+ messages in thread
From: Kienan Stewart via lttng-dev @ 2024-01-08 15:10 UTC (permalink / raw)
To: lttng-dev; +Cc: laksd
Hi Lakshmi,
could you elaborate on which version of lttngust you have and how you
installed it?
One possibility that I can imagine is that your ldconfig cache is out of
date for some reason - `ldconfig -p` will simply print the contents of
the cache - perhaps the files are no longer in the location specified in
that cache?
thanks,
kienan
On 12/26/23 11:19, Lakshmi Deverkonda via lttng-dev wrote:
> 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
>
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
_______________________________________________
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lttng-dev@lists.lttng.org
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [lttng-dev] Python lttngust module import error
2023-12-26 16:19 [lttng-dev] Python lttngust module import error Lakshmi Deverkonda via lttng-dev
2024-01-08 15:10 ` Kienan Stewart via lttng-dev
@ 2024-01-08 16:52 ` Michael Jeanson via lttng-dev
1 sibling, 0 replies; 3+ messages in thread
From: Michael Jeanson via lttng-dev @ 2024-01-08 16:52 UTC (permalink / raw)
To: lttng-dev
On 2023-12-26 11:19, Lakshmi Deverkonda via lttng-dev wrote:
> 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
Hi,
You might be missing the unversionned symlink from '.so' to '.so.0', like so:
liblttng-ust-python-agent.so -> liblttng-ust-python-agent.so.0
Cheers,
Michael
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2023-12-26 16:19 [lttng-dev] Python lttngust module import error Lakshmi Deverkonda via lttng-dev
2024-01-08 15:10 ` Kienan Stewart via lttng-dev
2024-01-08 16:52 ` Michael Jeanson via lttng-dev
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