[X2Go-Dev] Bug#1159: Bug#1159: PyHoca CLI: semaphore released too many times error

[Mike Gabriel]

Control: close -1

Hi Michael,

On  Do 16 Mär 2017 20:06:44 CET, Michael Ledin wrote:

Package: pyhoca-cli

Version: 0.5.0.2


I'm using Archlinux and installed pyhoca-cli package from AUR.



I start x2go desktop session with:


pyhoca-cli -P 20170316113957420 -d


It starts successfully with log:

pyhoca-cli[12140] NOTICE: preparing requested X2Go session
pyhoca-cli[12140] (PyHocaCLI) NOTICE: preparing requested X2Go session

pyhoca-cli[12140] (x2goclient-pylib) NOTICE: initializing X2Go session...



Then I press Ctrl+C and get an error:

^CKeyboardInterrupt
Thu Mar 16 22:01:04 2017

Traceback (most recent call last):
  File "/usr/bin/pyhoca-cli", line 423, in <module>
    thisPyHocaCLI.MainLoop()

    self._X2GoClient__suspend_session(self.x2go_session_hash)

    return self.session_registry(session_uuid).suspend(**sessionopts)

    self._lock.release()

thread.error: Semaphore released too many times





pyhoca-cli -P 20170316113957420 -R appheads-50-1489690847_stDXFCE_dp24


then sometimes I get the same error as above.

Previously I used x2goclient and created several profiles there. Also I tried to use pyhoca-gui but it has the same error (bug #1158). pyhoca-cli[12140] (x2gosessregistry-pylib) NOTICE: registering X2Go session AppHeads WAN... pyhoca-cli[12140] (x2gocontrolsession-pylib) NOTICE: connecting to [my.server.here]:22 pyhoca-cli[12140] (PyHocaCLI) NOTICE: give the X2Go session some time to come up... pyhoca-cli[12140] (PyHocaCLI) INFO: X2Go session is now running, the X2Go client's profile name is: AppHeads WAN pyhoca-cli[12140] (PyHocaCLI) INFO: X2Go session name is: appheads-50-1489690847_stDXFCE_dp24 pyhoca-cli[12140] (PyHocaCLI) NOTICE: Press CTRL+C to suspend the running session... pyhoca-cli[12140] (PyHocaCLI) INFO: Suspending X2Go session appheads-50-1489690847_stDXFCE_dp24 File "/usr/lib/python2.7/site-packages/pyhoca/cli/frontend.py", line 601, in MainLoop File "/usr/lib/python2.7/site-packages/x2go/client.py", line 1620, in suspend_session File "/usr/lib/python2.7/site-packages/x2go/session.py", line 2303, in suspend 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) if then I'll try to resume the session (I get it name from "pyhoca-cli -P 20170316113957420 -L"):

light+love
Mike

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Unfortunately, I know too little about what version of gevent and so on is in ArchLinux. Sorry for not having responded to this any earlier. On recent Debian I haven't noticed such an issue, but I know from the past that we had such an issue. I will close this issue now in the process of migrating of X2Go BTS to X2Go GitLab's isssue tracker.

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