On Mon, Nov 25, 2013 at 10:53 AM, Thibault, Daniel <[email protected]> wrote: >> 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. >
lttng-tools checks for kernel modules at run time, not at configure time. You can safely install lttng-modules after lttng-tools and still use kernel tracing. Regards, Jérémie >> 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 -- Jérémie Galarneau EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
