SysV to Systemd
Porting from sysVinit init scripts to systemd unit file.
- Name: Jóhann B. Guðmundsson ; Lennart Poettering
- Email: johannbg AT gmail DOT com ; lpoetter AT redhat DOT com
- Targeted release: Fedora 16
- Last updated:
- Percentage of completion: 0
coordination to ensure the best user experience. The best case is that all services which have shipped with system v init scripts in the past are upgraded to have systemd unit files in one Fedora release. The next best thing would be for individual services to transition to unit files only in the lead up to a new release. Today the FPC passed a clarification to have a warning about the latter put into the guidelines. This ticket is to find out what can be done about the former. Could we have a FES ticket to get people to work on this for F16? Is there another way to coordinate this?
Benefit to Fedora
See previous feature page concerning systemd for the benefits this will bring to Fedora which can be found here.
- Create a wiki page containing all package we ship that contain sysvinit init scripts
- Identify which packages contain sysvinit init scripts that are hardware activated socket activated and dbus activated
- Divide that page into four section regular service activation, hardware activated on, socket activated ones and dbus activated ones.
- Developers will need to convert the old sysvinit init script to native systemd one and or review and use ones that have been provided to them then package and ship
How To Test
- Install/update to the package that contains the new native systemd unit file.
- Check if the update process happened cleanly
- Check if the old sysvinit init script did get removed after install
- Check if the service starts cleanly after install
- check if the service stops cleanly after and install
- Check if the service reloads cleanly correctly if applicable
- Enable the service then restart
- check if the shutdown process happened cleanly with the service enabled
- check if the service started cleanly at startup
Native systemd service configuration files are much easier to understand and configure compared to sysvinit scripts and the bootup process should get faster.
Depends on present of systemd being installed which is the case for Fedora 15 and onwards.
Continue to ship the old sysvinit init script.
- It's recommended that documentation is updated to reflect usage of the native systemd commands instead of service and chkconfig commands note that service and chkconfig commands are backwards compatible up to a certain extent.
- An example usage of systemd commands usage compared to service and chkconfig ones can be found here.
- Some documentation regarding starting and stopping some service might need to be updated since the sysvinit init script ight have been split into more then one service file note that should not be the general case.
There shouldn't be anything we need to specifically say other than highlighting the change.