Oracle® Linux

Release Notes for Unbreakable Enterprise Kernel Release 4

Oracle Legal Notices

Oracle Documentation License

E69348-09

July 2019

Table of Contents

1 New Features and Changes

1.1 Notable Changes

1.1.1 Containers
1.1.2 Core Kernel Functionality
1.1.3 Cryptography
1.1.4 File Systems
1.1.5 Memory Management
1.1.6 Networking
1.1.7 NUMA
1.1.8 Real Time
1.1.9 Security
1.1.10 Storage
1.1.11 Virtualization
1.1.12 Zram
1.1.13 Zswap

1.2 Driver Updates

1.3 iSER and iSCSI LIO Support

1.4 LSI Logic / Symbios Logic MegaRAID SAS

1.5 New and Updated Packages

1.5.1 New and Updated Kernel, Driver, and Firmware Packages
1.5.2 New and Updated User Space Packages

1.6 Oracle Linux 7 Issue Fixes Using UEK R4

1.6.1 Network Teaming
1.6.2 systemd Fails to Load the autofs4 and ipv6 Modules

1.7 Technology Preview

1.8 Compatibility

2 Known Issues

2.1 btrfs
2.2 DIF/DIX is not supported for ext file systems
2.3 Console Appears to Hang when Booting
2.4 DTrace
2.5 ip_local_port_range Parameter Under LXC
2.6 Overlayfs Error with Docker

3 Installation and Availability

3.1 Installation Overview
3.2 Subscribing to ULN Channels
3.3 Enabling Access to Oracle Linux Yum Server Channels
3.4 Upgrading Your System
3.5 Installing the Oracle-Supported OFED Packages