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Bug#860554: autopkgtest: Running autopkgtest may fail due to long path



Control: tags -1 patch

Hi Antonio,

On Thu, Apr 27, 2017 at 2:49 PM, Antonio Terceiro <terceiro at debian.org> wrote:
> On Tue, Apr 18, 2017 at 03:50:15PM +0200, Balint Reczey wrote:
>> Package: autopkgtest
>> Version: 4.3
>>
>> Dear Maintainers,
>>
>> Running autopkgtest testsuite of libdbd-mysql-perl fails on s390x due
>> to the long socket filename:
>>
>> ( From https://bugs.launchpad.net/ubuntu/+source/autopkgtest/+bug/1680577 )
>> ...
>> 2017-03-29T08:40:18.627231Z 0 [Warning] Failed to set up SSL because
>> of the following SSL library error: SSL context is not usable without
>> certificate and private key
>> 2017-03-29T08:40:18.627257Z 0 [ERROR] The socket file path is too long
>> (> 107): /data/adttmp/autopkgtest-virt-lxc.shared.y4ui3net/downtmp/build.R3s/libdbd-mysql-perl-4.041/t/testdb/mysql.sock
>> 2017-03-29T08:40:18.627267Z 0 [ERROR] Aborting
>>
>> 2017-03-29T08:40:18.627278Z 0 [Note] Binlog end
>> 2017-03-29T08:40:18.627315Z 0 [Note] Shutting down plugin 'ngram'
>> 2017-03-29T08:40:18.627328Z 0 [Note] Shutting down plugin 'partition'
>> 2017-03-29T08:40:18.627337Z 0 [Note] Shutting down plugin 'BLACKHOLE'
>> ...
>>
>> A few characters could be cut in the package's test itself, but the
>> same problem may affect many other packages and fixing the issue in
>> autopkgtest seems bring more benefits.
>>
>> The system configuration addst the beginning of the path, but it is
>> not very long compared to the standard "/tmp":
>> "/data/adttmp/"
>>
>> The test itself generates the following path inside the source
>> directory which is not a huge portion of the path either:
>> "t/testdb/mysql.sock"
>>
>> Autopkgtest generates the longest part:
>> "autopkgtest-virt-lxc.shared.y4ui3net/downtmp/build.R3s/libdbd-mysql-perl-4.041"
>>
>> I proposed a patch which cuts a few characters from the prefix by
>> abbreviating "autopkgtest-virt-lxc.shared.", but the source directory
>> for the package could also be just "src" instead of the full package
>> name with version especially since this can be much longer than in the
>> current case.
>>
>> Before preparing an updated patch I wanted to ask for your opinion
>> regarding the path to be taken ( :-) ).
>
> I am not an autopkgtest maintainer, but I think we could maybe have the
> source tree in a very short path right on top of /, like /src, or
> /autopkgtest/src ... however I am not sure how that would impact the
> current codebase.

I have implemented this in the attached patch. I hope the maintainter likes it
as it worked nicely for me.

Cheers,
Balint

-- 
Balint Reczey
Debian & Ubuntu Developer
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