Re: code coverage and teuthology

[Dan Mick <dan.mick@inktank.com>]

It would not surprise me at all if gcov files are *highly* version 
dependent.  I don't know one way or the other, but it seems very possible.

On 01/15/2013 09:21 AM, Josh Durgin wrote:
> On 01/15/2013 02:10 AM, Loic Dachary wrote:
>> On 01/14/2013 06:26 PM, Josh Durgin wrote:
>>>
>>> Looking at how it's run automatically might help:
>>>
>>> https://github.com/ceph/teuthology/blob/master/teuthology/coverage.py#L88
>>>
>>>
>>>
>>> You should also add 'coverage: true' for the ceph task overrides.
>>> This way daemons are killed with SIGTERM, and the atexit function
>>> that outputs coverage information will run.
>>>
>>> Then you don't need your patch changing the flavor either.
>>> For each task X, the docstring for teuthology.task.X.task documents
>>> example usage and extra options like this.
>> Hi,
>>
>> That helped a lot, thanks :-) I think I'm almost there. After running:
>>
>> ./virtualenv/bin/teuthology --archive /tmp/a1 /srv/3node_rgw.yaml
>>
>> wget -O /tmp/build/tmp.tgz
>> http://gitbuilder.ceph.com/ceph-tarball-precise-x86_64-gcov/sha1/$(cat
>> /tmp/a1/ceph-sha1)/ceph.x86_64.tgz
>>
>> echo ceph_build_output_dir: /tmp/build >> ~/.teuthology.yaml
>>
>> ./virtualenv/bin/teuthology-coverage -v --html-output /tmp/html
>> --lcov-output /tmp/lcov --cov-tools-dir /srv/teuthology/coverage /tmp
>>
>> I get
>>
>> INFO:teuthology.coverage:initializing coverage data...
>> Retrieving source and .gcno files...
>> Initializing lcov files...
>> Deleting all .da files in /tmp/lcov/ceph/src and subdirectories
>> Done.
>> Capturing coverage data from /tmp/lcov/ceph/src
>> Found gcov version: 4.7.2
>> Scanning /tmp/lcov/ceph/src for .gcno files ...
>> Found 692 graph files in /tmp/lcov/ceph/src
>> Processing src/test_libhadoopcephfs_build-AuthMethodList.gcno
>> geninfo: ERROR:
>> /tmp/lcov/ceph/src/test_libhadoopcephfs_build-AuthMethodList.gcno:
>> reached unexpected end of file
>>
>> root@ceph:/srv/teuthology# ls -l
>> /tmp/lcov/ceph/src/test_libhadoopcephfs_build-AuthMethodList.gcno
>> -rw-r--r-- 1 root root 41088 Jan 15 09:49
>> /tmp/lcov/ceph/src/test_libhadoopcephfs_build-AuthMethodList.gcno
>>
>> I'm using
>>
>> lcov: LCOV version 1.9
>>
>> The only problem I can think of is that the machine I'm running lcov
>> on is a Debian GNU/Linux Wheezy, trying to analyze coverage for
>> binaries created for Ubuntu Precise. They are both amd64 but .gcno
>> files may have dependencies to the toolchain.
>>
>> Did you ever run into similar problems ?
>
> I think I did when I built and ran on debian, and it was fixed with a
> later version of lcov (I think 1.9-2). I didn't try doing the coverage
> analysis on a different distribution from where ceph was built and run
> though, so that may also cause some issues.
>
> Josh
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