SymbX/systemd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pid1: add "soft-reboot" reboot method

Browse Source 
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)
This commit is contained in:
Lennart Poettering
2023-06-02 16:49:38 +02:00
parent 8f9a307fec
commit 13ffc60749
13 changed files with 161 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/basic/special.h
+1
View File
@@ -14,6 +14,7 @@
#define SPECIAL_HALT_TARGET "halt.target"
#define SPECIAL_POWEROFF_TARGET "poweroff.target"
#define SPECIAL_REBOOT_TARGET "reboot.target"
#define SPECIAL_SOFT_REBOOT_TARGET "soft-reboot.target"
#define SPECIAL_KEXEC_TARGET "kexec.target"
#define SPECIAL_EXIT_TARGET "exit.target"
#define SPECIAL_SUSPEND_TARGET "suspend.target"