Re: [gentoo-soc] (draft) final report for OpenRC soc project 2012

Dear Luca,

Luca Barbato <lu_zero@g.o> writes:

> On 8/15/12 5:14 PM, heroxbd@×××××.com wrote:
>> 1. Prefix support of OpenRC
>
> And it looks quite nice

Thanks :)

>> 2. A evaluation of existing init systems
>>
>>     This includes solaris SMF, Mac OSX launchd, Fedora systemd, OpenSUSE
>>     systemd/LSB combo, Ubuntu upstart and Debian LSB/insserv combo.
>
> Were is it? I'd like to read it =)

  http://wiki.gentoo.org/wiki/Comparison_of_init_systems

And the "counter systemd" talk page,

  http://wiki.gentoo.org/wiki/Talk:Comparison_of_init_systems

>> 3. service supervisor
>>
>>     achieved via runit, doc at
>>     http://www.awa.tohoku.ac.jp/~benda/projects/runit.html
>>
>>     will move to wiki after runit feature is pulled in my WilliamH.
>>
>>     git repo:
>>     http://git.heroxbd.z.tuna.tsinghua.edu.cn/openrc.git?p=openrc.git;a=shortlog;h=refs/heads/runit
>>
>>     This is a cool feature, while it have changes to default behavior of
>>     OpenRC initscripts. Therefore documenting it comprehensively is
>>     necessary. A GLEP will be composed to serve as an RFC for the Gentoo
>>     community, official explanation and general guideline to simplify
>>     present (already simplified compared to LSB conterparts) init scripts
>>     shipped in ebuilds.
>>
>>     btw, s6 (http://www.skarnet.org/software/s6/why.html) is a better
>>     alternative to runit.
>
> Seems interesting indeed, would you consider working on it later?

Yes, the plan is,

  a. finish the GLEP, raise to gentoo-dev ml, get it accepted.
     with the reference implementation
  b. refine the runit branch according to the accepted GLEP, push into
     OpenRC master and make an OpenRC release. The build system should
     make this feature optional and tunable with USE flags in openrc ebuild.
  c. bug ebuild maintainers for possible polishing of their init
     scripts, referring the GLEP.

>> 4. OOM killer/periodical command
>>
>>     Not implemented here, tested with monit (http://mmonit.com/monit/)
>>     and fcron (http://fcron.free.fr/). No integration or modification is
>>     need in OpenRC, unlike runit. At most, we can introduce a
>>     IN_PERIODICAL envvar, as how IN_HOTPLUG works.
>
> I'd like to have more information here.

Got it, preparing...

>> 5. event driven actions
>>
>>     Same as hotplug feature already in OpenRC, triggered by udev, just
>>     lack of documentation. If used with runlevel stacking (another under
>>     documented feature of OpenRC), it can cover all the use cases I could
>>     imagine.
>>
>>     That's enough. upstart features a udev-upstart-bridge after all. It
>>     is a cool feature and we can adopt it with a combo of tools and
>>     achieve sane default behavior by packaging with, e.g., our beloved
>>     ebuild. The revolutionary event based init design is more of
>>     propaganding, IMHO.
>
> I'd like to see a wiki page or some more on that =)

Got it, underway...

>> 6. OpenRC introduction to debian
>>
>>     documented at
>>     http://wiki.debian.org/OpenRC
>>
>>     git repo:
>>     http://git.heroxbd.z.tuna.tsinghua.edu.cn/openrc.git?p=openrc.git;a=shortlog;h=refs/heads/debian
>>
>>     ITP bug:
>>     http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684396
>>
>>     on going debian packaging collaboration
>>     http://anonscm.debian.org/gitweb/?p=collab-maint/openrc.git;a=shortlog;h=refs/heads/debian
>>
>>     I will work closely with the debian team. Hope debian can stand
>>     against the gigantic storm of systemd.
>
> Looks great so far and coordination is great

Thanks :)

>> Tried systemd on OpenSUSE, disappointed by its ini unit files. At
>> present don't see the necessity for a parser.
>
> The unit file feature is something touted a lot, why you found it
> disappointing?

It's just plain ini, no black magic to prepare my coffee :D

BTW, any reference pointer to classical "touted" articles?

>>>> another plan for today
>>>>
>>>> install newest ubuntu to try out upstart natively. Make a draft
>>>> event driven system on my laptop(debian) by newly packaged OpenRC with
>>>> incron/inotify extension.
>>
>> incron not needed, it is for filesystem after all. udev + hotplug@OpenRC
>> do the job.
>
> More should be said on that =)

Ok, same as event driven topic as above. underway...

>> Succeeded, thinking of documenting it in wiki.

Got it.

Yours,
Benda