SYSTEMD-VOLATILE-ROOT.SERsystemd-volatile-rootSYSTEMD-VOLATILE-ROOT.SERVICE(8)

NAME
       systemd-volatile-root.service, systemd-volatile-root - Make the root
       file system volatile

SYNOPSIS
       systemd-volatile-root.service

       /lib/systemd/systemd-volatile-root

DESCRIPTION
       systemd-volatile-root.service is a service that replaces the root
       directory with a volatile memory file system ("tmpfs"), mounting the
       original (non-volatile) /usr/ inside it read-only. This way, vendor
       data from /usr/ is available as usual, but all configuration data in
       /etc/, all state data in /var/ and all other resources stored directly
       under the root directory are reset on boot and lost at shutdown,
       enabling fully stateless systems.

       This service is only enabled if full volatile mode is selected, for
       example by specifying "systemd.volatile=yes" on the kernel command
       line. This service runs only in the initrdyes, before the system
       transitions to the host's root directory. Note that this service is not
       used if "systemd.volatile=state" is used, as in that mode the root
       directory is non-volatile.

SEE ALSO
       systemd(1), systemd-fstab-generator(8), kernel-command-line(7)

systemd 252                                   SYSTEMD-VOLATILE-ROOT.SERVICE(8)

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