Initializing the pacman key database during boot can take considerable time
and there is no locking during this time against concurrent file access.
This can lead to problems when installing packages soon after reboot.
This also speeds up the boot process.
Additional disk space requirement is about 1 MByte.
Fixes#290
Before this patch sysrescue-configuration.lua was executed twice each boot:
(1) during initramfs stage (2) in the regular system as sysrescue-configuration.service
While in theory both runs should create the same output, this isn't guaranteed and
differences could appear for example because of network issues. Finding and debugging
these is difficult because the output of sysrescue-configuration.lua created during
initramfs isn't available anymore when the final system is running.
This patch lets sysrescue-configuration.lua just run once during initramfs. The
output JSON file is then written to the new tmpfs mounted dir /run/archiso/config/.
This dir is also made the new default location for sysrescue-effective-config.json.
A symlink from /etc/sysrescue/sysrescue-effective-config.json to the new location
is created for compatibility with previous releases.
The ldconfig service ("Rebuild Dynamic Linker Cache") updates /etc/ld.so.cache when it is
older than some preconfigured age. This increases boot time, especially when airootfs is
on a slower media, like a DVD-ROM drive or NFS. Since System Rescue doesn't change over time,
keeping the original file from release is fine.
This prevents huge dependency downloads by pacman when the SystemRescue version gets older
by using a snapshot repo from the day the SystemRescue version is released.
The classic rolling repos from Arch are also available as option. Activate with the
"--config /etc/pacman-rolling.conf" option to pacman.
To allow switching on a per-command basis, two different sets of remote package databases
are required. But the local package database must be the same for both variants. This
is achived by using two different DBPaths in the pacman config files and bind-mounting
the local part together. pacman does not accept symlinks for this, so it must be a bind mount.
* Following upstream archiso
* NetworkManager stays as default in SystemRescueCd
* Explicitly symlink /etc/resolv.conf to /run/NetworkManager/resolv.conf
to make clear NetworkManager is in charge
Closesfdupoux/sysresccd-src#75
* pulseaudio-alsa, in addition to install PulseAudio as a dependency,
configures ALSA to use PulseAudio.
* PulseAudio started by the systemd --user instance.
* Drop-ins allow PulseAudio start as root.
* XFCE panel configuration adjusted accordingly.
* alsa-utils is optional, but still useful for debugging purposes.
* 90-alsa-restore.rules is not useful with PulseAudio, mask it.
