Chapter 18. Persistently mounting file systems
Chapter 18. Persistently mounting file systems As a system administrator, you can persistently mount file systems to configure non-removable storage. 18.1. The /etc/fstab file Use the /etc/fstab configuration file to control persistent mount points of file systems. Each line in the /etc/fstab file defines a mount point of a file system. It includes six fields separated by white space: The block device identified by a persistent attribute or a path in the /dev directory. The directory where the device will be mounted. The file system on the device. Mount options for the file system, which includes the defaults option to mount the partition at boot time with default options. The mount option field also recognizes the systemd mount unit options in the x-systemd. option format. Backup option for the dump utility. Check order for the fsck utility. Note The systemd-fstab-generator dynamically converts the entries from the /etc/fstab file to the systemd-mount units. The systemd auto mounts LVM volumes from /etc/fstab during manual activation unless the systemd-mount unit is masked. Example 18.1. The /boot file system in /etc/fstab Block device Mount point File system Options Backup Check UUID=ea74bbec-536d-490c-b8d9-5b40bbd7545b /boot xfs defaults 0 0 The systemd service automatically generates mount units from entries in /etc/fstab . Additional resources fstab(5) and systemd.mount(5) man pages on your system 18.2. Adding a file system to /etc/fstab Configure persistent mount point for a file system in the /etc/fstab configuration file. Procedure Find out the UUID attribute of the file system: For example: Example 18.2. Viewing the UUID of a partition If the mount point directory does not exist, create it: As root, edit the /etc/fstab file and add a line for the file system, identified by the UUID. For example: Example 18.3. The /boot mount point in /etc/fstab Regenerate mount units so that your system registers the new configuration: Try mounting the file system to verify that the configuration works: Additional resources Overview of persistent naming attributes
lsblk --fs storage-device lsblk --fs /dev/sda1 NAME FSTYPE LABEL UUID MOUNTPOINT sda1 xfs Boot ea74bbec-536d-490c-b8d9-5b40bbd7545b /boot mkdir --parents mount-point UUID=ea74bbec-536d-490c-b8d9-5b40bbd7545b /boot xfs defaults 0 0 systemctl daemon-reload mount mount-point