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dev-manual: packages: clarify shared PR service constraint

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Explicit the problems previous described as "obvious".

(From yocto-docs rev: ca939f9ceebbf9b5e82bb76abf1c4d20f039d68e)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Suggested-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Michael Opdenacker
2024-02-21 22:14:35 +01:00
committed by Richard Purdie
parent 1a2cf4c538
commit ea5fa49bfc
1 changed files with 8 additions and 3 deletions
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documentation/dev-manual/packages.rst
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@@ -205,9 +205,14 @@ history, see the
The OpenEmbedded build system does not maintain :term:`PR` information as The OpenEmbedded build system does not maintain :term:`PR` information as
part of the shared state (sstate) packages. If you maintain an sstate part of the shared state (sstate) packages. If you maintain an sstate
feed, it's expected that either all your building systems that feed, it's expected that either all your building systems that
contribute to the sstate feed use a shared PR Service, or you do not contribute to the sstate feed use a shared PR service, or you do not
run a PR Service on any of your building systems. Having some systems run a PR Service on any of your building systems.
use a PR Service while others do not leads to obvious problems.
That's because if you had multiple machines sharing a PR service but
not their sstate feed, you could end up with "diverging" hashes for
the same output artefacts. When presented to the share PR service,
each would be considered as new and would increase the revision
number, causing many unnecessary package upgrades.
For more information on shared state, see the For more information on shared state, see the
":ref:`overview-manual/concepts:shared state cache`" ":ref:`overview-manual/concepts:shared state cache`"