[oe] Quality of meta-oe metadata
martin.jansa at gmail.com
Sun Mar 30 01:31:03 UTC 2014
Hi, sorry for longer e-mail, this is one of topic I would like to discuss
on OEDAM (http://openembedded.org/wiki/OEDAM), but having some feedback and
thoughts in advance will be very useful.
As people can notice from my "State of bitbake world" e-mails or
we never had "green" builds. There are always 20+ failed tasks in those
big builds and just reading the numbers isn't good indicator of quality,
because sooner you break something in dependency tree, fewer recipes will
be actually tested, so fewer failed tasks often means that something
important is broken.
There are IMHO at least 3 reasons for this depressing state:
1) Nobody is paid/dedicated to fix them, there is no company behind meta-oe
layers, now SWAT team, not even dedicated maintainers to which I could send
error from latest build and ask them to fix it before the end of
Kudos to people who are sometimes sending patches for such issues!
2) There are a lot of changes and component upgrades in oe-core which
sometimes aren't very straight-forward to adapt to and issues stay in
meta-oe for months.
I don't mean it's oe-core fault or that changes to oe-core should slow
down just because meta-oe, especially when we cannot guarantee when it
will be prepared for them (because of 1)).
oe-core is trying to track latest stable versions, but meta-oe often
contains very old versions and people upgrade to latest stable only the
recipes they really care about, so it's not so surprising that 2 year old
version of something isn't compatible with latest greatest freetype or
some library like that.
3) OE releases work great and don't invalidate sstate signatures so often, so my
feeling is that most developers and projects are just using releases and
less and less people do CI. People will start complaining that something
is broken in meta-oe only when they are upgrading their project from 1.5 to
1.6 when 1.6 is released and that could be too late for fixing meta-oe
What I'm trying to do with it:
a) sending those e-mails and updating wiki, so that people can easily find
if some build failure is common or something which happens only for them
(something like oestats-client.bbclass page was providing in oe-classic)
It also includes log of QA issues which are usually easy to fix and great
way for new people to learn something about OE.
b) trying to refuse all patches which cause new world issue (or new QA
warn/err) - sometimes missed in logs, because it's often "hidden" by some
other issue and hard to compare 40 issues from previous build with 38
Also the issues are often triggered later by changes somewhere else...
c) fixing build/qa issues in recipes I've never used or don't even have
hardware to test - just based on assumption that something which builds
is better than broken build, even when it can have some issues in runtime.
d) contacting people who added the recipe which is now failing, often
without reply for months even when I try it multiple times :/
e) moving to "nonworking" directory to mark it as "known-to-be-broken",
last resort for recipes where the fix is complicated and it's not known
if someone is actually using it (because it was broken for months and
+ easy to find them, because they are still in repository (instead of
git rm + revert when someone fixes it)
- layer index probably doesn't find them, because "nonworking" directory
level isn't in BBFILES, so maybe meta-broken or meta-nonworking would be
? some recipes are "broken" just because their dependency is broken, what
to do with such recipe, I usually just say that in commit message when
I'm moving them to "nonworking" with their broken dep.
What can we do better? How to motivate more people to do CI and send fixes?
When we get to "green" state it will be easier to quickly spot new issues and
easier to fix them, because it will be clear what's causing them.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 198 bytes
Desc: Digital signature
More information about the Openembedded-devel