Table of Contents Table of Contents Title and Copyright Information Preface Conventions Documentation Accessibility Access to Oracle Support for Accessibility Diversity and Inclusion 1 New Features and Changes Notable Changes Containers Core Kernel Functionality Cryptography File Systems btrfs efivarfs ext4 FUSE NFS Overlayfs XFS Memory Management Networking NUMA Real Time Security Storage OFED Support Virtualization Zram Zswap Driver Updates iSER and iSCSI LIO Support LSI Logic / Symbios Logic MegaRAID SAS New and Updated Packages New and Updated Kernel, Driver, and Firmware Packages New and Updated User Space Packages Oracle Linux 7 Issue Fixes Using UEK R4 Network Teaming systemd Fails to Load the autofs4 and ipv6 Modules Technology Preview Compatibility 2 Known Issues btrfs DIF/DIX is not supported for ext file systems Console Appears to Hang when Booting DTrace ip_local_port_range Parameter Under LXC Overlayfs Error with Docker 3 Installation and Availability Installation Overview Subscribing to ULN Channels Enabling Access to Oracle Linux Yum Server Channels Upgrading Your System Installing the Oracle-Supported OFED Packages