[lttng-dev] Running lttng-tools tests?

[Mathieu Desnoyers]

* Thibault, Daniel (Daniel.Thibault at drdc-rddc.gc.ca) wrote:
>    I tried deploying the tarball to another directory and building.  The tests refuse to run ("Could not execute (unit/test_kernel_data): open3: exec of unit/test_kernmel_data failed at /usr/share/perl/5.14/TAP/Parser/Iterator/Process.pm line 168") until after the make step (naturally).  This time I got:
> 
> unit/test_kernel_data .............. ok
> unit/test_session .................. ok
> unit/test_uri ...................... Dubious, test returned 1 (wstat > 256, 0x100)
> Failed 1/11 subtests
> unit/test_ust_data ................. ok
> unit/test_utils_parse_size_suffix .. ok
> 
> Test Summary Report
> -------------------
> unit/test_uri                    (Wstat: 256 Tests: 11 Failed: 1)
>   Failed test:  4
>   Non-zero exit status: 1
> Files=5, Tests=55,  4 wallclock secs ( 0.13 usr  0.08 sys +  1.34 cusr  1.02 csys =  2.57 CPU)
> Result: FAIL
> 
>    Now I get exactly the same report in the original /usr/src/... folder if I run 'sudo ./run.sh unit_tests' instead of 'sudo ./run.sh unit_tests'.  The problem is clearly one of file ownership (a lot of the /usr/src/... files are root-owned because of the way they were installed).
> 
> ~~~~~~~~~~
>    I was looking into the babeltrace tests as well (cd babeltrace/tests/, ./runall.sh) and I was surprised that every single "succeed" test failed.  Investigation revealed that the babeltrace/converter/babeltrace executable was responsible: it fails with "/usr/bin/ld: fatal error: /usr/src/babeltrace-1.1.0/converter/.libs/26622-lt-babeltrace: open: Permission denied" "collect2: ld a retourné 1 code d'état d'exécutionn".  Surprisingly, the babeltrace/converter/babeltrace executable is *different* from the /usr/local/bin/babeltrace executable (according to diff).  So are the babeltrace-log executables.  The timestamps are four seconds apart.
> 
>    The install log shows nothing strange: "libtool: install: /usr/bin/install -c .libs/babeltrace /usr/local/bin/babeltrace".  /usr/bin/install is supposed to do a plain copy, no?
> 
>    Changing runall.sh so it runs the installed /usr/local/bin/babeltrace yields successful tests except for the succeed3 trace:
> 
> $ babeltrace /usr/src/babeltrace-1.1.0/tests/ctf-traces/succeed/succeed3
> [error] at line 9: token ""?\x20\o040?"": syntax error, unexpected ERROR
> 
> [error] Error creating AST
> [warning] Unable to open trace metadata for path "/usr/src/babeltrace-1.1.0/tests/ctf-traces/succeed/succeed3".
> [warning] [Context] Cannot open_trace of format ctf at path /usr/src/babeltrace-1.1.0/tests/ctf-traces/succeed/succeed3.
> [warning] [Context] cannot open trace "/usr/src/babeltrace-1.1.0/tests/ctf-traces/succeed/succeed3" from /usr/src/babeltrace-1.1.0/tests/ctf-traces/succeed/succeed3 for reading.
> [error] Cannot open any trace for reading.
> 
> [error] opening trace "/usr/src/babeltrace-1.1.0/tests/ctf-traces/succeed/succeed3" for reading.
> 
> [error] none of the specified trace paths could be opened.
> 
>    Here also, ownership is responsible: running 'sudo ./runall.sh' (on the original runall.sh) yields the same successes (and the same succeed3 trace failure).
> 
>    So at this point I have three remaining questions:
> 
> 1) Why does unit/test_uri fail one of its 11 sub-tests?
> 2) Why does babeltrace fail when reading the succeed3 ctf trace?
> 3) Why on Earth are the babeltrace executables tampered with when installed?

ensure that your lttng-sessiond is not running when doing make check on
lttng-tools.

ensure that your files have the proper permissions when installed in
your system, if you plan on using them. You seem to be the only one
having this kind of issue, so it's probably specific to your
distribution setup.

Thanks,

Mathieu

> 
> Daniel U. Thibault
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com