Autofs is a way of auto-mounting devices to a running system. Theses steps will walk through enabling it on an Archlinux system.
What is Autofs?
It mounts a filesystem that is not always connected (e.g. network or device). Once a connection is made to that device, then autofs will handle the mounting of that device. It can also handle unmounting of a device, if it becomes unavailable.
/etc/fstab automatically tries to mount during boot - however, it won’t try to mount once a device is connected after boot. You may boot whilst you have no network access - this means that you won’t be able to mount that device. However, autofs will look after that, once you connect to the network (after boot).
Install the package
pacman -S autofs
Configure the master autofs
In the file
Each line in the file has three fields - the first two being mandatory, and the last being optional. The first is the mount-point - where will it get mounted. The second is the map-file that is a template. The last one is a time field.
You can also pass the
--timeout=30 at the end of the file which means it will be unmounted after that time of not being used.
usb -fstype=ntfs :/dev/sdc2
Start the service to test:
sudo systemctl start autofs.service
And then enable so that it will run at boot:
sudo systemctl enable autofs.service
You will need to attempt to use the filesystem for it to mount
and the disc should mount.