[Buildbot-devel] SVN mode copy failed

claude vittoria vittoric at wanadoo.fr
Fri Jul 18 17:31:44 UTC 2008

Brian Warner a écrit :
>>> But I get "program finished with exit code -1" in the waterfall. (I
>>> don't provide the whole report, nothing else is revelant) in twisted
>>> log
>> I have been seeing intermittent failures similar to this recently,
>> only on 64bit Linux slaves.  It seems to happen less than 10% of the
>> time (eyeball figure).  If I rebuild, it typically works.  Are you
>> seeing this problem for all builds, or just sometimes?
> I have seen this more frequently as of late, and I believe that it has to do
> with the use of a PTY on the buildslave. Try adding --usepty=0 when you
> create the buildslave (or edit the slave's buildbot.tac file to change the
> 'usepty = 1' line to read 'usepty = 0').
> The buildbot closes stdin of the child process after writes any data that
> needs to be written to stdin (such as the body of a patch that needs to be
> applied). Very few steps actually use data on stdin, so usually the pipe gets
> closed right after process startup. If a PTY is in use, this may cause the
> child process to receive a SIGHUP shortly after startup (but after a random
> delay influenced by the kernel scheduler). Many programs don't catch SIGHUP
> and it causes them to quit. If the SIGHUP arrives late, the program may be
> finished already and it isn't a problem. I suspect that something about
> recent linux kernels or some change in glibc has increased the frequency of
> these sorts of failures.
> At least, that's my hunch.. I haven't really been able to prove it. I've
> fussed a bit with not closing stdin, but I don't remember being satisfied
> with the results. I believe that after setting usepty=0 in my own
> buildslaves, the problem went away. I'm considering making usepty=0 the
> default for the next release.
> hope that helps,
>  -Brian

Thanks for the answer, 'usepty = 0' has solved my problem :o)
(svn copy mode, with http protocol for svn access.)


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