Gentoo with pure systemd, is it possible?

yufw · n00b Joined: 11 Nov 2013 Posts: 57

I want to switch to systemd as my default init system due to hearing good things about it. I have read some articles including the one on Gentoo wiki, now I am quite confident to do that switch. Still I have one question, can I remove OpenRC so I can get a pure systemd environment? If not, I wonder why I need it and that how OpenRC and systemd can work together on the same computer.

Logicien · Posted: Sat May 17, 2014 2:06 am Post subject:

I recommand to boot on Systemd first, work on it and when it's good for you than, remove globally in /etc/portage/make.conf the USE flag openrc (USE=" ...-openrc...) and emerge world (emerge -aDNuv @world). That should remove the openrc package.

Both init scripts Systemd and Openrc can be on the same Gentoo installation. It is not mandatory to uninstall one of the two for the other work. You have to keep in mind that the commands of Systemd like systemctl and journalctl may be useless when you boot on Openrc and Openrc commands like rc-update and rc-status may be useless when you boot on Systemd.
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Paul

NeddySeagoon · Posted: Sat May 17, 2014 12:09 pm Post subject:

yufw,

If you want to remove openrc entirely, you need to use the testing openrc first.

In stable, systemd depends on a single script from openrc
It testing openrc, this script is a separate package.

You probably need testing systemd too, so it depends on the separate package.
I'm not a systemd user though, so things may have moved on.

Try

fturco · Veteran Joined: 08 Dec 2010 Posts: 1181 Location: Italy

I have a GNOME/systemd system and I just removed openrc along with netifrc and service-manager. I added the following lines to /etc/portage/profile/packages:

Jaglover

yufw · n00b Joined: 11 Nov 2013 Posts: 57

gentooP4 · Apprentice Joined: 20 Sep 2010 Posts: 182 Location: NZ

yufw · n00b Joined: 11 Nov 2013 Posts: 57

khayyam

NeddySeagoon · Posted: Sun May 18, 2014 12:25 pm Post subject:

Community,

Please don't let this thread decend into another systemd flame fest.
We have several other threads for that very purpose.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

TomWij · Retired Dev Joined: 04 Jul 2012 Posts: 1553

Yes and no. Yes, because systemd does not need OpenRC in order to run; but no, because /etc/init.d/functions.sh is used by some utilities (eg. gcc-config). To resolve this, /lib/gentoo/functions.sh is installed by sys-apps/gentoo-functions; as those utilities migrate from the former path to the latter, this allows to remove OpenRC in the future.

If you wish to remove it already, you can follow one of the package.provided or similar profile related steps to keep it from installing; after which you can symlink the old path to the new patch to keep utilities working, after the utilities are fixed up you can then remove the symlink. The disadvantage of this hack is that you need to remember you have the symlink around; although it doesn't hurt, if you commonly do hacks like this it could set up some garbage here and there. Though it is possible to make a shell script that checks all the files on your system for integrity against the checksums in /var/db/pkg/ which is the packages database.

Keeping OpenRC around shouldn't hurt for now, it's the more sane approach; having both OpenRC and systemd available could even be a good idea, as when you break one you are able to switch to the other to fix it up.

yufw · n00b Joined: 11 Nov 2013 Posts: 57

TomWij,

Thanks for the details and advice.

fturco · Veteran Joined: 08 Dec 2010 Posts: 1181 Location: Italy

Yes, I also discovered that the gcc-config command failed to work after removal of sys-apps/openrc. I had to run the following command: