Migrate from Milky Way v0.1 to v0.2

Since Hyperbola has announced the end of systemd support, migration to OpenRC is required if you come from Milky Way v0.1.

If you are an user from an Arch-based distribution with systemd by default such as Parabola or Arch, migration to OpenRC is required too.

What is OpenRC?

OpenRC is a dependency based init system maintained by the Gentoo developers, that works with the system provided init program, normally SysVinit.

Warning

Please read the whole warning

For the current session when you install OpenRC, the command poweroff will probably not work. After a hard reboot, the command poweroff works fine again. Close your softwares, do sync, and you can shut down your computer manually.

netctl works with systemd only, therefore it will not work anymore from Milky Way v0.2 since OpenRC is the main init system of Hyperbola. In this page, we will assume you already have an alternative, in our case, it is netifrc or networkmanager.

Groups

Before Arch migrated to systemd, users had to be manually added to some groups in order to be able to access the corresponding devices. Read more about here.

Make sure your user is on the audio group, you won't have sound otherwise:

# gpasswd -a <your-user> audio

In the case of some graphical environments, such as KDE, you´ll need to edit /etc/pulse/client.conf and remove the autospawn = no line, and it should look something like this:

...
; default-sink =
; default-source =
; default-server =
; default-dbus-server =

; autospawn = yes
; daemon-binary = /usr/bin/pulseaudio
; extra-arguments = --log-target=syslog

; cookie-file =

; enable-shm = yes
; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB 

; auto-connect-localhost = no
; auto-connect-display = no
This is just in the case you use PulseAudio. For more information refer to this topic from the Manjaro forum.

Same for video, your games might be laggy otherwise:

# gpasswd -a <your-user> video

For networking:

# gpasswd -a <your-user> network

For webcam:

# gpasswd -a <your-user> optical

Also for storage:

# gpasswd -a <your-user> storage
# gpasswd -a <your-user> disk

And for CUPS:

# gpasswd -a <your-user> sys
First try these features before adding your user to these groups, for example, in some cases adding your user to the optical group may not be necessary.

Migration

Since OpenRC is included by default and systemd is blacklisted by your-freedom, just upgrade your machine in the simplest way:

# pacman -Syyuu base

On migrating, one may get messages like:

run 'rc-update add cronie default'
run 'rc-update add elogind default'

Running these command(s) adds the service(s) to the specified runlevels. For example on running:

# rc-update add elogind default

The elogind service would be added to the default runlevel and would automatically be started at boot.

elogind (systemd's logind replacement) and cronie (for cron) are some common services that can be enabled.

Currently, NetworkManager and any display manager such as GDM or LightDM runs the elogind service in Hyperbola automatically, however if you will use the xinit program to start the X Window System server or Weston/Sway to start Wayland and use netifrc instead of NetworkManager, you need add the elogind service to a runlevel (eg. default) to be started at boot automatically.

Also you need to install polkit to gain enough desktop privileges for operations like shutdown, mounting usb device:

# pacman -S polkit

Configuration

Services often required

Once you migrate to OpenRC, you might need to add lvm2 etc.

There is the procedure for lvm2:

# rc-update add lvm boot

For cryptsetup:

# rc-update add dmcrypt boot

For alsa-utils:

# rc-update add alsasound default

For cronie:

# rc-update add cronie default

On each package containing an OpenRC service, you will have have this message :

      ==> rc 'rc-update add ... default'
Make sure what services you was using in systemd to re-enable them in OpenRC:
$ ls -ls /etc/systemd/system/multi-user.target.wants/

Sometimes, there are target files such as remote-fs.target which are useless in OpenRC.

Hostname

OpenRC has its configuration in /etc/conf.d/, in order to have your hostname, edit /etc/conf.d/hostname:

# nano -w /etc/conf.d/hostname

And replace localhost with the name that you want:

# Set to the hostname of this machine
hostname="localhost"

NetworkManager settings

You need to enable the software at boot:

# rc-update add NetworkManager default

In order to not change the computer's hostname when you're connecting to Internet (provided by dhcp), uncomment the part [keyfile] in the file /etc/NetworkManager/NetworkManager.conf as follow :

# Static hostname
[keyfile]
hostname=**Votre hostname**

For NetworkManager to work correctly in OpenRC, make sure that /etc/hostname has the same localhost as in /etc/conf.d/hostname. Optionally, you can safely remove /etc/hostname

Kepmap

As the hostname, you need to setup the keymap in the file /etc/conf.d/keymaps:

keymap="us"

If you have an advanced usage of your keymap, you can watch the other functionalities, documented in the comments. You can find all the available keymaps in /usr/share/kbd/keymaps. Then run:

# rc-service keymaps restart
This only applies for CLI, is you are using X11, this won't affect your graphical environment.

Login display manager

Unlike another distros with OpenRC support, the DM is launched directly.

For example, with lightdm, you just need enable the service.

# rc-update add lightdm default

Adaptation between systemctl and rc-update

Add or delete a service

You can add a service using this way:

# rc-update add <service> <runlevel>

And delete it as follow:

# rc-update del <service> <runlevel>

Services currently running

In order to have a summary of all the services running, stopped etc, you can run this command:

# rc-status --all -v

Stop/Start/Restart a service

To restart a service, you need to use rc-service:

# rc-service <service> restart

Troubleshooting

Consistent network device naming is not disabled

To disable consistent network device naming, disable the assignment of fixed names, so that the unpredictable kernel names are used again, by masking udev's rule file for the default policy. This “masking” can be done by making a symbolic link to /dev/null. As root, issue a command as follows:

# ln -s /dev/null /etc/udev/rules.d/80-net-name-slot.rules

Sysctl.conf is missing

You can encounter an issue if /etc/sysctl.conf is missing. To fix this, you need to create the file:

# touch /etc/sysctl.conf

/usr/lib/rc/cache doesn't exist

If you have this error when you shutdown the computer:

WARNING: /usr/lib/rc/cache is not writable!

The solution is to create the folder:

# mkdir /usr/lib/rc/cache

Swap isn't enabled

Systemd used to mount the swap automatically, you need to manually add the swap in /etc/fstab as follow:

# /dev/sda2
UUID=0c3e9434-bc5c-461c-a5e4-4e9fe5f9a149	swap	swap	sw	0	0

tmpfs isn't present

As the swap, systemd automatically mounts the tmpfs. Add it manually in /etc/fstab:

tmpfs		/tmp		tmpfs   nodev,nosuid          	0  	0

The system can't shutdown correctly

Begin with OpenRC 0.28 SysVinit is replaced with openrc-init, shutdown is replaced with openrc-shutdown. If you use startx to start your desktop, you also need to modify ~/.xinitrc for xfce4, replace exec ck-launch-session startxfce4 to startxfce4.

Acknowledgement

This wiki article is based on ParabolaWiki.