focal (8) systemd-volatile-root.service.8.gz

Provided by: systemd_245.4-4ubuntu3.24_amd64 bug

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 initial RAM disk
       ("initrd"), 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)