[OE-core] [PATCH] package_manager: Run createrepo sequentially

[Richard Purdie]

On Mon, 2015-03-30 at 12:00 +0300, Ed Bartosh wrote:
> Running multiple createrepo in parallel can cause raice conditions
> when creating/accessing rpm database. Createrepo fails with the
> error "package_manager: rpmdb: BDB0060 PANIC: fatal region error detected"
> in such cases.
> 
> Running createrepo sequentially should fix the race as rpm database
> will not be accessed by multiple createrepo at the same time.
> 
> [YOCTO #6571]
> 
> Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
> ---
>  meta/lib/oe/package_manager.py | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/meta/lib/oe/package_manager.py b/meta/lib/oe/package_manager.py
> index c9a8084..c956116 100644
> --- a/meta/lib/oe/package_manager.py
> +++ b/meta/lib/oe/package_manager.py
> @@ -108,25 +108,22 @@ class RpmIndexer(Indexer):
>          archs = archs.union(set(sdk_pkg_archs))
>  
>          rpm_createrepo = bb.utils.which(os.getenv('PATH'), "createrepo")
> -        index_cmds = []
>          rpm_dirs_found = False
>          for arch in archs:
>              arch_dir = os.path.join(self.deploy_dir, arch)
>              if not os.path.isdir(arch_dir):
>                  continue
>  
> -            index_cmds.append("%s --update -q %s" % (rpm_createrepo, arch_dir))
> -
>              rpm_dirs_found = True
>  
> +            result = create_index("%s --update -q %s" % (rpm_createrepo, arch_dir))
> +            if result:
> +                bb.fatal(result)
> +
>          if not rpm_dirs_found:
>              bb.note("There are no packages in %s" % self.deploy_dir)
>              return
>  
> -        result = oe.utils.multiprocess_exec(index_cmds, create_index)
> -        if result:
> -            bb.fatal('%s' % ('\n'.join(result)))
> -
>  
>  class OpkgIndexer(Indexer):
>      def write_index(self):

Running these in parallel gives us a significant speed improvement.
Could we instead point them at separate directories for the RPM database
(within WORKDIR to address the previous issue too)?

Cheers,

Richard