[X2Go-Dev] Bug#1158: PyHoca GUI still showing terminated session (error: Semaphore released too many times)
Michael Ledin
m.ledin at appheads.ru
Thu Mar 16 19:42:56 CET 2017
Package: pyhoca-gui
Version: 0.5.0.4
I'm using Archlinux and installed pyhoca-gui from AUR. Before that I
used x2goclient and created several profiles there so in pyhoca-gui I
continued to use these profiles.
I connect to server and then start new desktop environment (XFCE). Then
I try to terminate the session. It terminated but PyHoca still shows it
in server menu like "Running: ...session name here" but in gray color
and session menu is not accessible so I can not terminate it again.
Here is the full log for "pyhoca-gui -d":
21:25:37: Warning: Mismatch between the program and library build
versions detected.
The library used 3.0 (wchar_t,compiler with C++ ABI 1010,wx
containers,compatible with 2.8),
and wxPython used 3.0 (wchar_t,compiler with C++ ABI 1009,wx
containers,compatible with 2.8).
pyhoca-gui[11764] (PyHoca-GUI) DEBUG: PyHoca-GUI's user interface
language is: en_US.
pyhoca-gui[11764] (PyHoca-GUI) INFO: PyHoca GUI is starting up
pyhoca-gui[11764] (PyHoca-GUI) INFO: start TaskBarIcon of type:
('__WXGTK__', 'wxGTK', 'unicode', 'gtk2', 'wx-assertions-on', 'SWIG-1.3.29')
pyhoca-gui[11764] (PyHoca-GUI) WARN: the current release of PyHoca-GUI
does not support client configuration
pyhoca-gui[11764] (x2gosessregistry-pylib) NOTICE: registering X2Go
session AppHeads WAN...
pyhoca-gui[11764] (x2goclient-pylib) NOTICE: initializing X2Go session...
pyhoca-gui[11764] (x2gocontrolsession-pylib) NOTICE: connecting to
[my.domain.here]:22
pyhoca-gui[11764] (PyHoca-GUI) NOTICE: [AppHeads WAN - connect] SSH key
authentication has been successful.
pyhoca-gui[11764] (x2gosessregistry-pylib) NOTICE: using already
initially-registered yet-unused session fa565712-0a75-11e7-9d4b-58946b494d4c
pyhoca-gui[11764] (x2goclient-pylib) NOTICE: initializing X2Go session...
pyhoca-gui[11764] (x2gosession-pylib) NOTICE: Using session
appheads-50-1489688865_stDXFCE_dp24 as master session for profile
AppHeads WAN.
pyhoca-gui[11764] (PyHoca-GUI) NOTICE: [AppHeads WAN - start] New X2Go
session starting up... appheads-50-1489688865_stDXFCE_dp24
pyhoca-gui[11764] (x2goterminalsession-pylib) NOTICE: x2goumount-session
(all mounts) for session appheads-50-1489688865_stDXFCE_dp24 has been
successful
pyhoca-gui[11764] (x2goterminalsession-pylib) NOTICE: cleaning up
session appheads-50-1489688865_stDXFCE_dp24 after termination
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/gevent/greenlet.py", line 536,
in run
result = self._run(*self.args, **self.kwargs)
File "/usr/lib/python2.7/site-packages/x2go/client.py", line 1680, in
terminate_session
return session.terminate()
File "/usr/lib/python2.7/site-packages/x2go/session.py", line 2374,
in terminate
self._lock.release()
File "src/gevent/_semaphore.py", line 266, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5353)
File "src/gevent/_semaphore.py", line 268, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5291)
error: Semaphore released too many times
Thu Mar 16 21:26:52 2017 <Greenlet at 0x7f340f8a5910: <bound method
PyHocaGUI.terminate_session of <pyhoca.wxgui.frontend.PyHocaGUI; proxy
of <Swig Object of type 'wxPyApp *' at 0x55e7af0c6320>
>>('fa565712-0a75-11e7-9d4b-58946b494d4c',
session_name='appheads-50-1489688865_stDXFCE_dp24',
match_profile_name=u'AppHeads WAN')> failed with error
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File "/usr/lib/python2.7/site-packages/x2go/guardian.py", line 116,
in guardian
update_mounts=self.auto_update_listmounts_cache,
File "/usr/lib/python2.7/site-packages/x2go/client.py", line 3148, in
update_cache_all_profiles
update_mounts=update_mounts,
File "/usr/lib/python2.7/site-packages/x2go/client.py", line 3089, in
update_cache_by_profile_name
self.listsessions_cache.update(profile_name,
update_sessions=_update_sessions, update_desktops=_update_desktops,
update_mounts=_update_mounts, )
File "/usr/lib/python2.7/site-packages/x2go/cache.py", line 135, in
update
self._update_sessions(profile_name, control_session)
File "/usr/lib/python2.7/site-packages/x2go/cache.py", line 204, in
_update_sessions
self.x2go_listsessions_cache[profile_name]['sessions'] =
control_session.list_sessions()
File
"/usr/lib/python2.7/site-packages/x2go/backends/control/plain.py", line
1749, in list_sessions
self.associated_terminals[_session_name].__del__()
File
"/usr/lib/python2.7/site-packages/x2go/backends/terminal/plain.py", line
413, in __del__
self._x2go_tidy_up()
File
"/usr/lib/python2.7/site-packages/x2go/backends/terminal/plain.py", line
424, in _x2go_tidy_up
self._share_local_folder_lock.release()
File "src/gevent/_semaphore.py", line 266, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5353)
File "src/gevent/_semaphore.py", line 268, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5291)
error: Semaphore released too many times
If I'll try then to disconnect from server then GUI shows that server is
disconnected but I still will get the following log output:
pyhoca-gui[11764] (PyHoca-GUI) NOTICE: [AppHeads WAN - disconnect] X2Go
Profile is now disconnected.
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/gevent/greenlet.py", line 536,
in run
result = self._run(*self.args, **self.kwargs)
File "/usr/lib/python2.7/site-packages/x2go/client.py", line 3005, in
disconnect_profile
_retval = s.disconnect() | _retval
File "/usr/lib/python2.7/site-packages/x2go/session.py", line 1377,
in disconnect
self._lock.release()
File "src/gevent/_semaphore.py", line 266, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5353)
File "src/gevent/_semaphore.py", line 268, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5291)
error: Semaphore released too many times
Thu Mar 16 21:28:59 2017 <Greenlet at 0x7f340f8a5370: <bound method
PyHocaGUI.disconnect_profile of <pyhoca.wxgui.frontend.PyHocaGUI; proxy
of <Swig Object of type 'wxPyApp *' at 0x55e7af0c6320> >>(u'AppHeads
WAN')> failed with error
Next if I try to connect to server again then GUI looks like I was
connected to server, but previously terminated session is showed like
running (though pressing "Show session windows" results in nothing) and
"An unknown error occured during authentication" message is popped up
and the following log is outputed:
pyhoca-gui[11764] (x2gosessregistry-pylib) NOTICE: registering X2Go
session AppHeads WAN...
pyhoca-gui[11764] (x2goclient-pylib) NOTICE: initializing X2Go session...
pyhoca-gui[11764] (PyHoca-GUI) NOTICE: [AppHeads WAN - unknown error] An
unknown error occurred during authentication!
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/gevent/greenlet.py", line 536,
in run
result = self._run(*self.args, **self.kwargs)
File "/usr/lib/python2.7/site-packages/pyhoca/wxgui/frontend.py",
line 636, in _do_authenticate
self._X2GoClient__connect_session(session_uuid,
add_to_known_hosts=self.add_to_known_hosts)
File "/usr/lib/python2.7/site-packages/x2go/client.py", line 1367, in
connect_session
sshproxy_force_password_auth=sshproxy_force_password_auth,
File "/usr/lib/python2.7/site-packages/x2go/session.py", line 1355,
in connect
self.update_status()
File "/usr/lib/python2.7/site-packages/x2go/session.py", line 1603,
in update_status
session_list = self.control_session.list_sessions()
File
"/usr/lib/python2.7/site-packages/x2go/backends/control/plain.py", line
1749, in list_sessions
self.associated_terminals[_session_name].__del__()
File
"/usr/lib/python2.7/site-packages/x2go/backends/terminal/plain.py", line
413, in __del__
self._x2go_tidy_up()
File
"/usr/lib/python2.7/site-packages/x2go/backends/terminal/plain.py", line
424, in _x2go_tidy_up
self._share_local_folder_lock.release()
File "src/gevent/_semaphore.py", line 266, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5353)
File "src/gevent/_semaphore.py", line 268, in
gevent._semaphore.BoundedSemaphore.release
(src/gevent/gevent._semaphore.c:5291)
error: Semaphore released too many times
Thu Mar 16 21:34:17 2017 <Greenlet at 0x7f340f8a5370: <bound method
PyHocaGUI._do_authenticate of <pyhoca.wxgui.frontend.PyHocaGUI; proxy of
<Swig Object of type 'wxPyApp *' at 0x55e7af0c6320>
>>(<wx._core.CommandEvent; proxy of <Swig Object of t,
'299442ea-0a77-11e7-9d4b-58946b494d4c')> failed with error
After that if I press "Disconnect from server" nothing happens except
showing popup that profile is disconnected though GUI says that there is
still active connection and I even can start new desktop session.
pyhoca-cli also has that "Semaphore released too many times" error. I
will report it as separate bug.
--
Michael Ledin
More information about the x2go-dev
mailing list