systemd-remount-fs.service, systemd-remount-fs - Remount root and kernel file
systems
systemd-remount-fs.service
/lib/systemd/systemd-remount-fs
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.
systemd(1),
fstab(5),
mount(8),
systemd-fstab-generator(8),
systemd-gpt-auto-generator(8)
- 1.
- API File Systems