3 Commits

Author	SHA1	Message	Date
Yu Watanabe	03a41c41ee	Revert "units: do not soft-reboot before soft-reboot.target reached" ... This reverts commit 4263d7617f. Still I think this is the way to go. But the change was merged after -rc2, and still discussion is continued. So, at least now let's revert it, and do that after v256-final is released if approved.	2024-05-23 00:06:30 +09:00
Yu Watanabe	4263d7617f	units: do not soft-reboot before soft-reboot.target reached ... Otherwise, at the time systemd-soft-reboot.service succeeds, services which has Conflicts= and Before=soft-reboot.target may not be stopped yet, and may be SIGKILLed. Especially, systemd-journald.service has the dependencies, thus journal may be corrupted. See #32223. Follow-up for 13ffc60749. Fixes #32834.	2024-05-17 12:31:00 +09:00
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