It's not possible to run multiple adds at the same time

[jigfox]

if you run multiple repositorio --repo=SOMEREPO --add=SOMEPACKAGE.rpm at the same time all but one will fail with the following message:

Cannot create/verify /some/folder/7/x86_64/./.repodata
Error running createrepo. at /usr/share/perl5/vendor_perl/Rex/Repositorio/Repository/Yum.pm line 296.
    Rex::Repositorio::Repository::Yum::_run_createrepo('Rex::Repositorio::Repository::Yum=HASH(0x27c0928)') called at /usr/share/perl5/vendor_perl/Rex/Repositorio/Repository/Yum.pm line 264
    Rex::Repositorio::Repository::Yum::add_file(undef, 'file', 'SOMEPACKAGE.rpm') called at /usr/share/perl5/vendor_perl/Rex/Repositorio.pm line 213
    Rex::Repositorio::add_file(undef, 'file', 'SOMEPACKAGE.rpm', 'repo', 'SOMEREPO') called at /usr/share/perl5/vendor_perl/Rex/Repositorio.pm line 85
    Rex::Repositorio::parse_cli_option('Rex::Repositorio=HASH(0x27980c8)', 'repo', 'SOMEREPO', 'add-file', 'SOMEPACKAGE.rpm') called at /usr/share/perl5/vendor_perl/Rex/Repositorio.pm line 68
    Rex::Repositorio::run('Rex::Repositorio=HASH(0x27980c8)', 'repo', 'SOMEREPO', 'add-file', 'SOMEPACKAGE.rpm') called at /usr/bin/repositorio line 74

SOMEPACKE is always another package for each parallel run, so I don't try to add the same package multiple times, but multiple different packages at the same time.