|
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON |
SYSTEMD-MACHINE-ID-COMMIT.SERVICE(8)e-id-commit.service-ID-COMMIT.SERVICE(8)
systemd-machine-id-commit.service - Commit a transient machine ID to
disk
systemd-machine-id-commit.service
systemd-machine-id-commit.service is an early boot service
responsible for committing transient /etc/machine-id files to a
writable disk file system. See machine-id(5) for more information
about machine IDs.
This service is started after local-fs.target in case /etc/machine-id
is a mount point of its own (usually from a memory file system such
as "tmpfs") and /etc is writable. The service will invoke
systemd-machine-id-setup --commit, which writes the current transient
machine ID to disk and unmount the /etc/machine-id file in a
race-free manner to ensure that file is always valid and accessible
for other processes. See systemd-machine-id-setup(1) for details.
The main use case of this service are systems where /etc/machine-id
is read-only and initially not initialized. In this case, the system
manager will generate a transient machine ID file on a memory file
system, and mount it over /etc/machine-id, during the early boot
phase. This service is then invoked in a later boot phase, as soon as
/etc has been remounted writable and the ID may thus be committed to
disk to make it permanent.
systemd(1), systemd-machine-id-setup(1), machine-id(5),
systemd-firstboot(1)
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2017-07-05. If you dis‐
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COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
systemd 234 SYSTEMD-MACHINE-ID-COMMIT.SERVICE(8)
Pages that refer to this page: systemd-machine-id-setup(1), systemd.directives(7), systemd.index(7)