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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)
17 lines
588 B
Desktop File
17 lines
588 B
Desktop File
# SPDX-License-Identifier: LGPL-2.1-or-later
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#
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# This file is part of systemd.
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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[Unit]
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Description=Reboot System Userspace
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Documentation=man:systemd-soft-reboot.service(8)
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DefaultDependencies=no
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Requires=shutdown.target umount.target final.target
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After=shutdown.target umount.target final.target
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SuccessAction=soft-reboot-force
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