[lttng-dev] Installing LTTNG on beaglebone black or rasberry pi
Nwafor, Ebelechukwu
ebelechukwu.nwafor at bison.howard.edu
Fri Nov 18 13:09:35 UTC 2016
Hello Jonathan.
I have tried every other thing on your last message. Attached is the output
of the lttng-sessiond -vvv
Thanks.
root at ebele-desktop:~# lttng-sessiond -vvv
DEBUG1 - 20:29:17.718632 [8086/8086]: run_as signal handler set for SIGTERM
and SIGINT (in set_worker_sighandlers() at runas.c:600)
DEBUG1 - 20:29:17.719781 [8085/8085]: Health check time delta in seconds
set to 20 (in health_init() at health.c:74)
DEBUG1 - 20:29:17.720333 [8085/8085]: epoll set max size is 334459 (in
compat_epoll_set_max_size() at compat-epoll.c:290)
DEBUG3 - 20:29:17.720888 [8085/8085]: Creating LTTng run directory:
/var/run/lttng (in create_lttng_rundir() at main.c:5156)
DEBUG2 - 20:29:17.721063 [8085/8085]: Kernel consumer err path:
/var/run/lttng/kconsumerd/error (in main() at main.c:5601)
DEBUG2 - 20:29:17.721101 [8085/8085]: Kernel consumer cmd path:
/var/run/lttng/kconsumerd/command (in main() at main.c:5603)
Error: Could not get lock file /var/run/lttng/lttng-sessiond.lck, another
instance is running.
DEBUG1 - 20:29:17.721231 [8085/8085]: Cleanup sessiond (in
sessiond_cleanup() at main.c:622)
DEBUG1 - 20:29:17.721322 [8085/8085]: Removing sessiond and consumerd
content of directory /var/run/lttng (in sessiond_cleanup() at main.c:641)
DEBUG1 - 20:29:17.721360 [8085/8085]: Removing
/var/run/lttng/lttng-sessiond.pid (in sessiond_cleanup() at main.c:647)
DEBUG1 - 20:29:17.721417 [8085/8085]: Removing /var/run/lttng/agent.port
(in sessiond_cleanup() at main.c:652)
DEBUG1 - 20:29:17.721462 [8085/8085]: Removing
/var/run/lttng/kconsumerd/error (in sessiond_cleanup() at main.c:659)
DEBUG1 - 20:29:17.721510 [8085/8085]: Removing directory
/var/run/lttng/kconsumerd (in sessiond_cleanup() at main.c:665)
DEBUG1 - 20:29:17.721558 [8085/8085]: Removing
/var/run/lttng/ustconsumerd32/error (in sessiond_cleanup() at main.c:672)
DEBUG1 - 20:29:17.721602 [8085/8085]: Removing directory
/var/run/lttng/ustconsumerd32 (in sessiond_cleanup() at main.c:678)
DEBUG1 - 20:29:17.721647 [8085/8085]: Removing
/var/run/lttng/ustconsumerd64/error (in sessiond_cleanup() at main.c:685)
DEBUG1 - 20:29:17.721693 [8085/8085]: Removing directory
/var/run/lttng/ustconsumerd64 (in sessiond_cleanup() at main.c:691)
DEBUG1 - 20:29:17.721734 [8085/8085]: Cleaning up all sessions (in
sessiond_cleanup() at main.c:694)
DEBUG1 - 20:29:17.721765 [8085/8085]: Cleaning up all agent apps (in
sessiond_cleanup() at main.c:711)
DEBUG1 - 20:29:17.721796 [8085/8085]: Closing all UST sockets (in
sessiond_cleanup() at main.c:714)
DEBUG2 - 20:29:17.721825 [8085/8085]: UST app cleaning registered apps hash
table (in ust_app_clean_list() at ust-app.c:3702)
DEBUG3 - 20:29:17.721856 [8085/8085]: Buffer registry destroy all registry
(in buffer_reg_destroy_registries() at buffer-registry.c:716)
DEBUG2 - 20:29:17.721886 [8085/8085]: Closing kernel fd (in
sessiond_cleanup() at main.c:719)
DEBUG1 - 20:29:17.721914 [8085/8085]: Unloading kernel modules (in
sessiond_cleanup() at main.c:726)
DEBUG1 - 20:29:17.722118 [8085/8087]: [ht-thread] startup. (in
thread_ht_cleanup() at ht-cleanup.c:37)
DEBUG3 - 20:29:17.723951 [8085/8087]: [ht-thread] Polling. (in
thread_ht_cleanup() at ht-cleanup.c:67)
DEBUG1 - 20:29:17.736599 [8085/8085]: Modprobe removal successful
lttng-kretprobes (in modprobe_remove_lttng() at modprobe.c:126)
DEBUG1 - 20:29:17.750243 [8085/8085]: Modprobe removal successful
lttng-kprobes (in modprobe_remove_lttng() at modprobe.c:126)
DEBUG1 - 20:29:17.763239 [8085/8085]: Modprobe removal successful
lttng-ftrace (in modprobe_remove_lttng() at modprobe.c:126)
DEBUG1 - 20:29:17.778109 [8085/8085]: Modprobe removal successful
lttng-types (in modprobe_remove_lttng() at modprobe.c:126)
DEBUG1 - 20:29:17.793153 [8085/8085]: Modprobe removal successful
lttng-ring-buffer-metadata-mmap-client (in modprobe_remove_lttng() at
modprobe.c:126)
DEBUG1 - 20:29:17.810951 [8085/8085]: Modprobe removal successful
lttng-ring-buffer-client-mmap-overwrite (in modprobe_remove_lttng() at
modprobe.c:126)
DEBUG1 - 20:29:17.823876 [8085/8085]: Modprobe removal successful
lttng-ring-buffer-client-mmap-discard (in modprobe_remove_lttng() at
modprobe.c:126)
DEBUG1 - 20:29:17.836698 [8085/8085]: Modprobe removal successful
lttng-ring-buffer-metadata-client (in modprobe_remove_lttng() at
modprobe.c:126)
DEBUG1 - 20:29:17.849417 [8085/8085]: Modprobe removal successful
lttng-ring-buffer-client-overwrite (in modprobe_remove_lttng() at
modprobe.c:126)
DEBUG1 - 20:29:17.864495 [8085/8085]: Modprobe removal successful
lttng-ring-buffer-client-discard (in modprobe_remove_lttng() at
modprobe.c:126)
DEBUG1 - 20:29:17.879363 [8085/8085]: Modprobe removal successful
lttng-lib-ring-buffer (in modprobe_remove_lttng() at modprobe.c:126)
DEBUG1 - 20:29:17.896710 [8085/8085]: Modprobe removal successful
lttng-tracer (in modprobe_remove_lttng() at modprobe.c:126)
DEBUG3 - 20:29:17.897048 [8085/8087]: [ht-thread] Returning from poll on 2
fds. (in thread_ht_cleanup() at ht-cleanup.c:74)
DEBUG1 - 20:29:17.897154 [8085/8087]: [ht-cleanup] quit. (in
thread_ht_cleanup() at ht-cleanup.c:153)
DEBUG1 - 20:29:17.897262 [8085/8087]: [ht-cleanup] Thread terminates. (in
thread_ht_cleanup() at ht-cleanup.c:164)
DEBUG1 - 20:29:17.897743 [8085/8085]: Cleaning up options (in
sessiond_cleanup_options() at main.c:773)
DEBUG1 - 20:29:17.901442 [8085/8085]: lttng-runas terminated with status
code 0 (in run_as_destroy_worker() at runas.c:737)
DEBUG1 - 20:29:17.901548 [8085/8085]: *** assert failed :-) *** ==>
Matthew, BEET driven development works! (in sessiond_cleanup_options() at
main.c:805)
root at ebele-desktop:~#
On Thu, Nov 17, 2016 at 7:38 PM, Jonathan Rajotte Julien <
Jonathan.rajotte-julien at efficios.com> wrote:
> Hi,
>
> On 2016-11-17 07:24 PM, Nwafor, Ebelechukwu wrote:
>
>> Thanks Jonathan for you helpful response. I was able to install the
>> specific linux-headers and it seems to install all of the modules. Now i've
>> hit another roadblock. whenever i try to list all of the kernel events
>> using lttng list -k, it throws an error: unable to list kernel events:
>> Kernel tracer is not available. I have two lttng-sessiond running.
>>
>
> Terminate both of them. Since you installed it from apt-get the
> lttng-tools package provide a service for lttng-sessiond implying that the
> lttng-sessiond process should get restarted automatically if killed.
>
> Again, make sure that the user issuing the "lttng list -k" is part of the
> "tracing" group or simply root.
>
> If this still does not work refer to the last email and stop the service
> then, as root, launch "lttng-sessiond -vvv" and check the output to make
> sure that the modules gets loaded.
>
> Open another terminal and test the kernel tracepoint listing.
>
> If this does not work make sure to include the output from "lttng-sessiond
> -vvv" in your next email.
>
> Cheers
>
>>
>> On Thu, Nov 17, 2016 at 4:45 PM, Jonathan Rajotte Julien <
>> Jonathan.rajotte-julien at efficios.com <mailto:Jonathan.rajotte-julie
>> n at efficios.com>> wrote:
>>
>> Hi,
>>
>>
>> On 2016-11-17 04:24 PM, Nwafor, Ebelechukwu wrote:
>>
>> Hi Jonathan. Thank you for your response.
>>
>> On the beaglebone black, i tried building lttng-tools,
>> lttng-modules-dkms and lttng-ust-dev from source v2.8.1 by
>> following the documentation. lttng-modules-dkms runs fine but
>> the module does not show up on the list of running modules
>> when i issue an lsmod command. Also, i run into errors while
>> trying to build and compile lttng-tools. Beaglebone black runs
>> on debian. Linux beaglebone 3.8.13-bone70 #1 SMP Fri Jan 23
>> 02:15:42 UTC 2015 armv7l GNU/Linux
>>
>>
>> What errors do you see when building lttng-tools?
>>
>>
>>
>> On the raspberry pi, I use the commands, apt-get install
>> lttng-modules-dkms lttng-tools lttng-ust-dev. Everything seems
>> to work fine with the exception of lttng-modules-dkms which
>> does not show up on the list on running modules. Also, every
>> time i try to view available kernel events, it comes up with
>> an error saying unable to list kernel events: kernel tracer
>> not available. The LTTNG version installed using apt-get is
>> 2.7.1. I am running ubuntu mate OS. Below are the output while
>> installing lttng-modules-dkms
>>
>>
>> Well as the error points out do you have the kernel tracer started?
>>
>> ps -aux | grep lttng-sessiond
>>
>> Does the user trying to use lttng is part of the tracing group or
>> is root ?
>>
>> You can start lttng-sessiond with the -vvv options make sure to be
>> root when doing so lttng-sessiond load the tracing modules.
>>
>> Since you installed it from apt-get the lttng-tools package
>> provide a daemon for lttng-sessiond so before testing manually:
>>
>> service lttng-sessiond stop
>>
>>
>>
>> root at ebele-desktop:~# apt-get install lttng-modules-dkms
>> Reading package lists... Done
>> Building dependency tree
>> Reading state information... Done
>> lttng-modules-dkms is already the newest version (2.7.1-1).
>> 0 upgraded, 0 newly installed, 0 to remove and 14 not upgraded.
>> 2 not fully installed or removed.
>> After this operation, 0 B of additional disk space will be used.
>> Do you want to continue? [Y/n] Y
>> Setting up linux-headers-4.4.0-22 (4.4.0-22.40) ...
>> Setting up lttng-modules-dkms (2.7.1-1) ...
>> Loading new lttng-modules-2.7.1 DKMS files...
>> First Installation: checking all kernels...
>> dpkg: warning: version '*-*' has bad syntax: version number
>> does not start with digit
>> It is likely that 4.4.30-v7+ belongs to a chroot's host
>> Module build for the currently running kernel was skipped
>> since the
>> kernel source for this kernel does not seem to be installed.
>>
>>
>>
>> Could you make sure that your linux header for the running kernel
>> are installed.
>>
>> 4.4.30-v7+ seems like a custom kernel install.
>>
>> root at ebele-desktop:~#
>>
>>
>>
>> On Thu, Nov 17, 2016 at 3:00 PM, Jonathan Rajotte
>> <jonathan.r.julien at gmail.com
>> <mailto:jonathan.r.julien at gmail.com>
>> <mailto:jonathan.r.julien at gmail.com
>> <mailto:jonathan.r.julien at gmail.com>>> wrote:
>>
>> Hi,
>>
>> Could you be a bit more precise regarding which part of the
>> documentation does not work ?
>>
>> How did you install it ? Distribution packages ? From
>> sources ?
>> Cross compiled ?
>>
>> What is your setup ? Raspian for the Pi ? Custom kernel
>> image ?
>>
>> Cheers
>>
>> On Thu, Nov 17, 2016 at 2:54 PM, Nwafor, Ebelechukwu
>> <ebelechukwu.nwafor at bison.howard.edu
>> <mailto:ebelechukwu.nwafor at bison.howard.edu>
>> <mailto:ebelechukwu.nwafor at bison.howard.edu
>> <mailto:ebelechukwu.nwafor at bison.howard.edu>>> wrote:
>>
>> Hello.
>>
>> I am trying to install LTTNG tracing tool on raspberry
>> pi and
>> beaglebone black board.The official LTTNG
>> documentation does
>> not work on these devices. Does anyone know of any
>> tutorial
>> that can help me accomplish this? Thanks.
>>
>> -- Ebelechukwu Nwafor,
>> Graduate Student,
>> Howard University.
>>
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>> <https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev>>
>>
>>
>>
>>
>> -- Jonathan Rajotte Julien
>>
>>
>>
>>
>> -- Ebelechukwu Nwafor,
>> Graduate Student,
>> Howard University.
>>
>>
>> _______________________________________________
>> lttng-dev mailing list
>> lttng-dev at lists.lttng.org <mailto:lttng-dev at lists.lttng.org>
>> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>> <https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev>
>>
>>
>> -- Jonathan R. Julien
>> Efficios
>>
>>
>> _______________________________________________
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>>
>>
>>
>>
>> --
>> Ebelechukwu Nwafor,
>> Graduate Student,
>> Howard University.
>>
>
> --
> Jonathan R. Julien
> Efficios
>
>
--
Ebelechukwu Nwafor,
Graduate Student,
Howard University.
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