Chapter 4. Managing EVMS Devices / 4.5. Configuring Mount Options for Devices
	4.4. Creating Disk Segments (or Partitions)		4.6. What’s Next

Configuring Mount Options for Devices

The following table describes the Fstab Options that are configurable in YaST. The values are written to the /etc/fstab file and are applied upon reboot.

Table 4.3. Fstab Options in YaST

Fstab Option	Description
Mount by	Device name (K) (default, such as /dev/sda2) Volume label (L) Make sure to also specify a value in Volume Label. UUID (U) For information about why you might want to discover partitions and devices by UUID, see Section 3.2.1, “Using UUIDs to Assemble or Activate File System Devices”. Device ID (I) Device Path (P)
Volume label	A useful name to help you easily identify the volume on the server. By default, this field is empty.
Mount read-only	Select the check box to enable this option. It is deselected (disabled) by default. If this option is enabled, files and directories cannot be modified or saved on the volume.
No access time	Select the check box to enable this option. It is deselected (disabled) by default. By default, the Linux open(2) command updates the access time whenever a file is opened. The No Access Time option disables the updating of access time, so that reading a file does not update its access time. Enabling the No Access Time option allows you to back up a volume without modifying the access times of its files.
Mountable by user	Select the check box to enable this option. It is deselected (disabled) by default. If this option is enabled, the volume can be mounted by any user; `root` privileges are not required.
Do Not Mount at System Start-up	Select the check box to enable this option. It is deselected (disabled) by default. The system volumes such as `/boot`, `swap`, and root (`/`) should all be mounted at system start. For other volumes, enable this option for a volume if you want to mount it manually later using the mount command at a terminal console prompt.
Data journaling mode	For journaling file systems, select the preferred journaling mode: Ordered: Writes data to the file system, then enters the metadata in the journal. This is the default. Journal: Writes data twice; once to the journal, then to the file system. Writeback: Writes data to the file system and writes metadata in the journal, but the writes are performed in any order.
Access Control LIsts (ACL)	Select this option to enable access control lists on the file system. It is enabled by default.
Extended user attributes	Select this option to enable extended user attributes on the file system. It is enabled by default.
Arbitrary option value	Specify any mount option that is legal for the Mount Options column for a device entry in the `/etc/fstab` file. Use a comma with no spaces to separate multiple options.

You can modify these values for each entry by editing the /etc/fstab file, or use the following procedure to modify the mount options for a volume in the /etc/fstab file from YaST.

Open YaST, then click System+Partitioning.
Select the device you want to modify, then click Fstab Options.
Modify the settings as desired, then click OK to accept your changes.