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 initrd, 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 252 SYSTEMD-REMOUNT-FS.SERVICE(8)
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