https://bugs.kde.org/show_bug.cgi?id=476077
Bug ID: 476077
Summary: [RFE] Support for systemd soft-reboot
Classification: Plasma
Product: plasmashell
Version: 5.27.9
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: Session Management
Assignee: plasma-b...@kde.org
Reporter: oleksa...@natalenko.name
Target Milestone: 1.0
Hello.
Since v254 systemd supports a so-called "soft-reboot" action, where the whole
userspace is reloaded without restarting the kernel [1] [2]:
```
* A new "soft-reboot" mechanism has been added to the service manager.
A "soft reboot" is similar to a regular reboot, except that it
affects userspace only: the service manager shuts down any running
services and other units, then optionally switches into a new root
file system (mounted to /run/nextroot/), and then passes control to a
systemd instance in the new file system which then starts the system
up again. The kernel is not rebooted and neither is the hardware,
firmware or boot loader. This provides a fast, lightweight mechanism
to quickly reset or update userspace, without the latency that a full
system reset involves. Moreover, open file descriptors may be passed
across the soft reboot into the new system where they will be passed
back to the originating services. This allows pinning resources
across the reboot, thus minimizing grey-out time further. This new
reboot mechanism is accessible via the new "systemctl soft-reboot"
command.
```
It would be nice to have a possibility to trigger this from the KDE's shutdown
menu.
Please consider.
Thanks.
[1]
https://www.freedesktop.org/software/systemd/man/latest/systemd-soft-reboot.service.html
[2] https://github.com/systemd/systemd/releases/tag/v254
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