6.2. Mounting an Ext4 File System
6.2. Mounting an Ext4 File System An ext4 file system can be mounted with no extra options. For example: The ext4 file system also supports several mount options to influence behavior. For example, the acl parameter enables access control lists, while the user_xattr parameter enables user extended attributes. To enable both options, use their respective parameters with -o , as in: The tune2fs utility also allows administrators to set default mount options in the file system superblock. For more information on this, refer to man tune2fs . Write Barriers By default, ext4 uses write barriers to ensure file system integrity even when power is lost to a device with write caches enabled. For devices without write caches, or with battery-backed write caches, disable barriers using the nobarrier option, as in: For more information about write barriers, refer to Chapter 22, Write Barriers .
mount /dev/ device /mount/point mount -o acl,user_xattr /dev/ device /mount/point mount -o nobarrier /dev/ device /mount/point