systemd-remount-fs

SYSTEMD-REMOUNT-FS.SERVICEsystemd-remount-fs.servSYSTEMD-REMOUNT-FS.SERVICE(8)

NAME
       systemd-remount-fs.service, systemd-remount-fs - Remount root and
       kernel file systems

SYNOPSIS
       systemd-remount-fs.service

       /lib/systemd/systemd-remount-fs

DESCRIPTION
       systemd-remount-fs.service is an early boot service that applies mount
       options listed in fstab(5), or gathered from the partition table (when
       systemd-gpt-auto-generator(8) is active) to the root file system, the
       /usr file system, and the kernel API file systems. This is required so
       that the mount options of these file systems -- which are pre-mounted
       by the kernel, the initial RAM disk, container environments or system
       manager code -- are updated to those configured in /etc/fstab and the
       other sources. This service ignores normal file systems and only
       changes the root file system (i.e.  /), /usr, and the virtual kernel
       API file systems such as /proc, /sys or /dev. This service executes no
       operation if no configuration is found (/etc/fstab does not exist or
       lists no entries for the mentioned file systems, or the partition table
       does not contain relevant entries).

       For a longer discussion of kernel API file systems see API File
       Systems[1].

       Note: systemd-remount-fs.service is usually pulled in by systemd-fstab-
       generator(8), hence it is also affected by the kernel command line
       option fstab=, which may be used to disable the generator. It may also
       pulled in by systemd-gpt-auto-generator(8), which is affected by
       systemd.gpt_auto and other options.

SEE ALSO
       systemd(1), fstab(5), mount(8), systemd-fstab-generator(8), systemd-
       gpt-auto-generator(8)

NOTES
        1. API File Systems
           https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems

systemd 245                                      SYSTEMD-REMOUNT-FS.SERVICE(8)