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Jim Gallacher
jg.lists at sympatico.ca
Wed Jun 1 14:23:31 EDT 2005
Hi Asif, I missed the "Permission denied" part of the error message. Doing a quick search of the mail archives turns up the following discussion: http://www.modpython.org/pipermail/mod_python/2003-December/014701.html http://www.modpython.org/pipermail/mod_python/2003-December/014703.html http://www.modpython.org/pipermail/mod_python/2003-December/014705.html http://www.modpython.org/pipermail/mod_python/2003-December/014707.html http://www.modpython.org/pipermail/mod_python/2003-December/014708.html The upshot of which was it was a permissions bug in System V IPC that was fixed in 3.1.2. I've reached the limit of my knowledge here. Hopefully someone with a better understanding can help out. Regards, Jim Asif Jan wrote: > Hi Jim > > I disabled the ldap but the problem persists ..... Here is the log > > [Wed Jun 01 19:39:18 2005] [notice] mod_python: Creating 32 session > mutexes based on 150 max processes and 0 max threads. > [Wed Jun 01 19:39:18 2005] [notice] Digest: generating secret for > digest authentication ... > [Wed Jun 01 19:39:18 2005] [notice] Digest: done > [Wed Jun 01 19:39:19 2005] [notice] Apache/2.0.52 (Unix) DAV/2 > mod_python/3.1.4 Python/2.3 configured -- resuming normal operations > [Wed Jun 01 19:39:19 2005] [info] Server built: Sep 30 2004 18:20:43 > [Wed Jun 01 19:39:19 2005] [debug] prefork.c(955): AcceptMutex: sysvsem > (default: sysvsem) > [Wed Jun 01 19:39:53 2005] [error] [client 127.0.0.1] File does not > exist: /Library/Apache2/htdocs/favicon.ico > [Wed Jun 01 19:39:55 2005] [error] [client 127.0.0.1] File does not > exist: /Library/Apache2/htdocs/favicon.ico > [Wed Jun 01 19:39:58 2005] [notice] mod_python: (Re)importing module > 'mptest' > [Wed Jun 01 19:39:58 2005] [warn] (13)Permission denied: Failed to > acquire global mutex lock at index 0 > [Wed Jun 01 19:39:58 2005] [error] [client 127.0.0.1] PythonHandler > mptest: Traceback (most recent call last):, referer: > http://localhost/MODPYTHON/ > [Wed Jun 01 19:39:58 2005] [error] [client 127.0.0.1] PythonHandler > mptest: File > "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ > python2.3/site-packages/mod_python/apache.py", line 299, in > HandlerDispatch\n result = object(req), referer: > http://localhost/MODPYTHON/ > [Wed Jun 01 19:39:58 2005] [error] [client 127.0.0.1] PythonHandler > mptest: File "/Library/Apache2/htdocs/MODPYTHON/mptest.py", line 5, > in handler\n _apache._global_lock(req.server, None, 0), referer: > http://localhost/MODPYTHON/ > [Wed Jun 01 19:39:58 2005] [error] [client 127.0.0.1] PythonHandler > mptest: ValueError: Failed to acquire global mutex lock, referer: > http://localhost/MODPYTHON/ > > > Regards > Asif > On Jun 1, 2005, at 6:42 PM, Jim Gallacher wrote: > >> Asif, >> >> I'm probably way out of my depth here, but could ldap be competing >> for the mutexes as they are a limited system resource (on linux anyway)? >> >> If ldap is a loadable module, what happens if you disable it in the >> apache config? >> >> Jim >> >> Asif Jan wrote: >> >>> Hi Jim >>> Here is the information; >>> [Wed Jun 01 18:12:39 2005] [notice] mod_python: Creating 32 session >>> mutexes based on 150 max processes and 0 max threads. >>> [Wed Jun 01 18:12:40 2005] [notice] LDAP: Built with OpenLDAP LDAP SDK >>> [Wed Jun 01 18:12:40 2005] [notice] LDAP: SSL support unavailable >>> [Wed Jun 01 18:12:40 2005] [notice] Digest: generating secret for >>> digest authentication ... >>> [Wed Jun 01 18:12:40 2005] [notice] Digest: done >>> [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global >>> mutex /var/tmp/tmp.0.UjOapM in child 5476 >>> [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global >>> mutex /var/tmp/tmp.0.UjOapM in child 5477 >>> [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global >>> mutex /var/tmp/tmp.0.UjOapM in child 5478 >>> [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global >>> mutex /var/tmp/tmp.0.UjOapM in child 5479 >>> [Wed Jun 01 18:12:40 2005] [debug] util_ldap.c(1432): INIT global >>> mutex /var/tmp/tmp.0.UjOapM in child 5480 >>> [Wed Jun 01 18:12:40 2005] [notice] Apache/2.0.52 (Unix) >>> mod_python/3.1.4 Python/2.3 DAV/2 configured -- resuming normal >>> operations >>> [Wed Jun 01 18:12:40 2005] [info] Server built: Sep 30 2004 18:20:43 >>> [Wed Jun 01 18:12:40 2005] [debug] prefork.c(955): AcceptMutex: >>> sysvsem (default: sysvsem) >>> Wed Jun 01 18:13:44 2005] [notice] mod_python: (Re)importing module >>> 'mptest' >>> [Wed Jun 01 18:13:44 2005] [warn] (13)Permission denied: Failed to >>> acquire global mutex lock at index 0 >>> [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: Traceback (most recent call last):, referer: >>> http://localhost/MODPYTHON/ >>> [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: File >>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>> python2.3/site-packages/mod_python/apache.py", line 299, in >>> HandlerDispatch\n result = object(req), referer: >>> http://localhost/MODPYTHON/ >>> [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: File "/Library/Apache2/htdocs/MODPYTHON/mptest.py", line >>> 5, in handler\n _apache._global_lock(req.server, None, 0), >>> referer: http://localhost/MODPYTHON/ >>> [Wed Jun 01 18:13:44 2005] [error] [client 127.0.0.1] PythonHandler >>> mptest: ValueError: Failed to acquire global mutex lock, referer: >>> http://localhost/MODPYTHON/ >>> Regards >>> Asif >>> On Jun 1, 2005, at 5:39 PM, Jim Gallacher wrote: >>> >>>> Hi Asif, >>>> >>>> Is there any indication in the apache error.log that the mutexes >>>> where created on apache startup? You should see something like: >>>> >>>> [Wed Jun 01 15:38:39 2005] [notice] mod_python: Creating 32 >>>> session mutexes based on 6 max processes and 25 max threads. >>>> [Wed Jun 01 15:38:39 2005] [notice] Apache/2.0.54 (Debian >>>> GNU/Linux) mod_python/3.2.0-dev-20050519 Python/2.3.5 configured >>>> -- resuming normal operations >>>> >>>> Jim >>>> >>>> >>>> Asif Jan wrote: >>>> >>>>> Hi Jim, >>>>> Here is the output from the log file ( I saved the code in >>>>> mptest file) >>>>> [Wed Jun 01 17:23:15 2005] [notice] mod_python: (Re)importing >>>>> module 'mptest' >>>>> [Wed Jun 01 17:23:15 2005] [warn] (13)Permission denied: Failed >>>>> to acquire global mutex lock at index 0 >>>>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] >>>>> PythonHandler mptest: Traceback (most recent call last):, >>>>> referer: http://localhost/MODPYTHON/ >>>>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] >>>>> PythonHandler mptest: File >>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>> python2.3/site-packages/mod_python/apache.py", line 299, in >>>>> HandlerDispatch\n result = object(req), referer: >>>>> http://localhost/MODPYTHON/ >>>>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] >>>>> PythonHandler mptest: File >>>>> "/Library/Apache2/htdocs/MODPYTHON/mptest.py", line 5, in >>>>> handler\n _apache._global_lock(req.server, None, 0), referer: >>>>> http://localhost/MODPYTHON/ >>>>> [Wed Jun 01 17:23:15 2005] [error] [client 127.0.0.1] >>>>> PythonHandler mptest: ValueError: Failed to acquire global mutex >>>>> lock, referer: http://localhost/MODPYTHON/ >>>>> Regards >>>>> Asif >>>>> On Jun 1, 2005, at 5:02 PM, Jim Gallacher wrote: >>>>> >>>>>> Try restarting apache and run the following test handler: >>>>>> >>>>>> import _apache >>>>>> >>>>>> def handler(req): >>>>>> req.content_type = 'text/plain' >>>>>> req.write('begin lock test\n') >>>>>> _apache._global_lock(req.server, None, 0) >>>>>> _apache._global_unlock(req.server, None, 0) >>>>>> req.write('begin lock test\n') >>>>>> return apache.OK >>>>>> >>>>>> Check the apache error.log and post any errors (including >>>>>> apache startup) regarding mutexes or locks. >>>>>> >>>>>> Regards, >>>>>> Jim >>>>>> >>>>>> >>>>>> Asif Jan wrote: >>>>>> >>>>>>> By the way I get same error when using the python scripts as well >>>>>>> Mod_python error: "PythonHandler mod_python.publisher" >>>>>>> Traceback (most recent call last): >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/apache.py", line 299, in >>>>>>> HandlerDispatch >>>>>>> result = object(req) >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/publisher.py", line 136, in >>>>>>> handler >>>>>>> result = util.apply_fs_data(object, req.form, req=req) >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/util.py", line 361, in >>>>>>> apply_fs_data >>>>>>> return object(**args) >>>>>>> File "/Library/Apache2/htdocs/NEOBASE/mptest.py", line 5, in test >>>>>>> sess = Session.Session(req) >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/Session.py", line 389, in >>>>>>> Session >>>>>>> timeout=timeout, lock=lock) >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/Session.py", line 294, in >>>>>>> __init__ >>>>>>> timeout=timeout, lock=lock) >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/Session.py", line 131, in >>>>>>> __init__ >>>>>>> self.lock() # lock new sid >>>>>>> File >>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>> python2.3/site-packages/mod_python/Session.py", line 215, in lock >>>>>>> _apache._global_lock(self._req.server, self._sid) >>>>>>> ValueError: Failed to acquire global mutex lock >>>>>>> On Jun 1, 2005, at 3:17 PM, Asif Jan wrote: >>>>>>> >>>>>>>> >>>>>>>> Hi , >>>>>>>> >>>>>>>> When I try to use "session" object inside a PSP page I get >>>>>>>> following error ( I am using Mac OS X 10.3.9 , Python 2.3 >>>>>>>> (Apple), and mod_python 3.1.4). >>>>>>>> >>>>>>>> Is it something specific to Mac OS X ? >>>>>>>> >>>>>>>> By the way in my psp page I am doing a very simple thing i.e. >>>>>>>> >>>>>>>> if not session.is_new(): >>>>>>>> # do something >>>>>>>> else: >>>>>>>> # do something else >>>>>>>> >>>>>>>> >>>>>>>> Mod_python error: "PythonHandler mod_python.psp" >>>>>>>> >>>>>>>> Traceback (most recent call last): >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/apache.py", line 299, in >>>>>>>> HandlerDispatch >>>>>>>> result = object(req) >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/psp.py", line 297, in handler >>>>>>>> p.run() >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/psp.py", line 191, in run >>>>>>>> session = Session.Session(req) >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/Session.py", line 389, in >>>>>>>> Session >>>>>>>> timeout=timeout, lock=lock) >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/Session.py", line 294, in >>>>>>>> __init__ >>>>>>>> timeout=timeout, lock=lock) >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/Session.py", line 131, in >>>>>>>> __init__ >>>>>>>> self.lock() # lock new sid >>>>>>>> >>>>>>>> File >>>>>>>> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >>>>>>>> python2.3/site-packages/mod_python/Session.py", line 215, in lock >>>>>>>> _apache._global_lock(self._req.server, self._sid) >>>>>>>> >>>>>>>> ValueError: Failed to acquire global mutex lock >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Mod_python mailing list >>>>>>>> Mod_python at modpython.org >>>>>>>> http://mailman.modpython.org/mailman/listinfo/mod_python >>>>>>>> >>>>>>>> >>>>>>> Asif Jan >>>>>>> Research Assistant >>>>>>> Brain Mind Institute >>>>>>> Ecole Polytechnique Federale De Lausanne (EPFL) >>>>>>> Lausanne Switzerland >>>>>>> Tel +41216939529 >>>>>>> _______________________________________________ >>>>>>> Mod_python mailing list >>>>>>> Mod_python at modpython.org >>>>>>> http://mailman.modpython.org/mailman/listinfo/mod_python >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> Asif Jan >>>>> Research Assistant >>>>> Brain Mind Institute >>>>> Ecole Polytechnique Federale De Lausanne (EPFL) >>>>> Lausanne Switzerland >>>>> Tel +41216939529 >>>>> _______________________________________________ >>>>> Mod_python mailing list >>>>> Mod_python at modpython.org >>>>> http://mailman.modpython.org/mailman/listinfo/mod_python >>>> >>>> >>>> >>>> >>> Asif Jan >>> Research Assistant >>> Brain Mind Institute >>> Ecole Polytechnique Federale De Lausanne (EPFL) >>> Lausanne Switzerland >>> Tel +41216939529 >>> _______________________________________________ >>> Mod_python mailing list >>> Mod_python at modpython.org >>> http://mailman.modpython.org/mailman/listinfo/mod_python >> >> >> > Asif Jan > Research Assistant > Brain Mind Institute > Ecole Polytechnique Federale De Lausanne (EPFL) > Lausanne Switzerland > > Tel +41216939529 > > _______________________________________________ > Mod_python mailing list > Mod_python at modpython.org > http://mailman.modpython.org/mailman/listinfo/mod_python >
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