6 Installing a System With a Btrfs root File System

Oracle Linux uses XFS as the default file system, but you can also use ext4, and shared file systems such as NFS and Samba.

The Btrfs file system is available in Oracle Linux, but only on UEK. Thus, to install Oracle Linux with Btrfs, you must use the UEK ISO image.

Note:

UEK is the only kernel available for aarch64 hardware.

For more information about file systems in Oracle Linux, see Oracle Linux 10: Performing File System Administration.

Similarly to any installation of a standard Oracle Linux release, installing the OS with a Btrfs file system can also be completed in two modes:

• Using the GUI Installer

• Using the Text Installer

You can also install a system with a Btrfs root file system using Kickstart automation as described in Automating the Installation by Using Kickstart. If you choose to perform an automated installation with a network installation setup, as described in Creating a Network Installation Setup, ensure that you configure the network boot to use the installation kernel and ram-disk image provided in the UEK ISO image and that you have mirrored all required repositories, or you might get an error stating that Btrfs isn't available for the partitioning type.