[Mageia-dev] Will this work for a build system?

Sun Sep 26 17:04:05 CEST 2010

2010/9/26 Olivier Blin <mageia at blino.org>:
+> R James <upsnag2 at gmail.com> writes:
+>
+>>> BTW, I once calculated (test plus extrapolation) how long it would take
+>>> to rebuild every package in Mandriva on a low end 2 GHz Celeron server
+>>> that I had available and it came to about 80 days.
+>
+> With a reasonably good machine, we used to be able to rebuild most of
+> "main" in about one day.
+>
+>> Perhaps I was naive in thinking that compiling the distro could be
+>> done with distcc or even a simple queuing system that distributes
+>> SRPMs to nodes in the community swarm.  As each node returns its
+>> completed binary package, the queuing system could send it another
+>> SRPM to build.
+>>
+>> It would be cool if it could be done that way.  Why pay for data
+>> center space, hardware, electricity and big bandwidth when you could
+>> have a community-provided "cloud" for free? :o)
+>
+> Because there are some authentication and integrity issues which are not
+> simple to solve: we have to be sure that the binary packages really come
+> from the unmodified SRPM (so that it does not contains malware).
+
+This can be avoid by
+- building every package twice (also useful for integrity check)
+- randomize build order
+- timedout jobs
+
+It's not a trivial problem but imho distribute tools advantages
+(price, scalability, availability ...) should be seriously considered.
+Has a single build system in a single datacenter should be a single
+point of failure.
+
+Joris
+>
+> --
+> Olivier Blin - blino
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+