> Date: Sun, 24 Nov 2013 19:26:05 +0100 > From: Klaus Dannecker <[email protected]> > > > Interesting. Would you mind running "lttng start" in verbose mode and > > provide the output? > > lttng -vvv start > klaus@ubuntu:~$ sudo lttng -vvv start > DEBUG2 [2854/2854]: Config file path found: /home/klaus (in > get_session_name() at utils.c:57) > DEBUG1 [2854/2854]: Session name found: auto-20131124-091639 (in > get_session_name() at utils.c:58) > DEBUG1 [2854/2854]: Starting tracing for session auto-20131124-091639 (in > start_tracing() at commands/start.c:81) > DEBUG1 [2854/2854]: LSM cmd type : 16 (in send_session_msg() at > lttng-ctl.c:131) > 'ctrl c' > klaus@ubuntu:~$
Definitely looks like a module loading problem. > > lttng-modules does not define an "uninstall" make target. I guess > > you'll have to delete the modules manually under /lib/modules/$(uname > > -r)/extra /lib/modules/$(uname -r)/extra/lib /lib/modules/$(uname > > -r)/extra/probes > > > > I'm wondering if it could be a conflict with your distribution's > > lttng-modules-dkms package... Could you verify that it is not > > installed? > > now i make two experiments: > first: > install ubuntu 12.04 in vmware > $ git clone git://git.lttng.org/lttng-tools.git > $ git clone git://git.lttng.org/lttng-modules.git > $ git clone git://git.lttng.org/lttng-ust.git > $ git clone git://git.lttng.org/userspace-rcu.git > compile and install all like: > https://www.ibm.com/developerworks/community/blogs/fe313521-2e95-46f2-817d-44a4f27eba32/entry/howto_tracing_with_lttng?lang=en > now i have the same problem. Aha! There is one crucial mistake in the ibm.com document: he installs the packages in the wrong order. lttng-tools must be installed AFTER lttng-modules and lttng-ust. lttng-modules can be installed before, during or after lttng-ust, but userspace-rcu must be installed before lttng-ust. The problem is that the configure of lttng-tools detects the presence or absence of lttng-modules and also detects the presence or absence of lttng-ust, and adjusts to both. By installing lttng-tools before lttng-modules, you've built an lttng-tools set that CANNOT be used to trace the kernel. So, try again from scratch, making sure to install lttng-tools last. > second: > install ubuntu 12.04 in vmware > sudo apt-get install lttng-tools >... > Building only for 3.8.0-29-generic > Building initial module for 3.8.0-29-generic > Error! Bad return status for module build on kernel: 3.8.0-29-generic (i686) > Consult /var/lib/dkms/lttng-modules/2.0.2/build/make.log for more information. > Setting up lttng-tools (2.0.1-0ubuntu1) ... > /usr/sbin/addgroup > lttng-sessiond start/running, process 5515 > Processing triggers for libc-bin ... > ldconfig deferred processing now taking place > klaus@ubuntu:~$ The Ubuntu lttng 2.0.1 install will very likely run into trouble against kernel 3.8 because of the new module signing requirements. > $ git clone git://git.lttng.org/lttng-modules.git > compile and install lttng_modules > > now works lttng start, stop and destroy! > > Klaus Daniel U. Thibault Protection des systèmes et contremesures (PSC) | Systems Protection & Countermeasures (SPC) Cyber sécurité pour les missions essentielles (CME) | Mission Critical Cyber Security (MCCS) R & D pour la défense Canada - Valcartier (RDDC Valcartier) | Defence R&D Canada - Valcartier (DRDC Valcartier) 2459 route de la Bravoure Québec QC G3J 1X5 CANADA Vox : (418) 844-4000 x4245 Fax : (418) 844-4538 NAC : 918V QSDJ <http://www.travelgis.com/map.asp?addr=918V%20QSDJ> Gouvernement du Canada | Government of Canada <http://www.valcartier.drdc-rddc.gc.ca/> _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
