1
0
mirror of https://github.com/systemd/systemd.git synced 2024-12-22 17:35:35 +03:00
Commit Graph

1 Commits

Author SHA1 Message Date
Lennart Poettering
13ffc60749 pid1: add "soft-reboot" reboot method
This adds a new mechanism for rebooting, a form of "userspace reboot"
hereby dubbed "soft-reboot". It will stop all services as in a usual
shutdown, possibly transition into a new root fs and then issue a fresh
initial transaction. The kernel is not replaced.

File descriptors can be passed over, thus opening the door for leaving
certain resources around between such reboots.

Usecase: this is an extremely quick way to reset userspace fully when
updating image based systems, without going through a full
hardware/firmware/boot loader/kernel/initrd cycle. It minimizes "grayout time"
for OS updates. (In particular when combined with kernel live patching)
2023-06-02 16:49:38 +02:00