systemd-remount-fs.service

systemd
Developer Lennart Poettering lennart@poettering.net
systemd-remount-fs.service 8
systemd-remount-fs.service systemd-remount-fs Remount root and kernel file systems

`systemd-remount-fs.service`

`/usr/lib/systemd/systemd-remount-fs`

## Description

`systemd-remount-fs.service` is an early-boot service that applies mount options listed in fstab 5 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 listed in `/etc/fstab`. 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 `/etc/fstab` does not exist or lists no entries for the mentioned file systems.

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

## See Also

systemd 1, fstab 5, mount 8