The software described in this documentation is either in Extended Support or Sustaining Support. See for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

1.9.3 Technology Preview Features in RHCK

The following Technology Preview features are available when running the Red Hat Compatible Kernel (RHCK):

  • Apache IPA identity management modules

  • Closed Process Group (CPG) API for inter-node locking

  • Corosync redundant ring with autorecovery

  • corosync-cpgtool dual-ring configuration

  • Cross Realm Kerberos Trust Functionality (relies on the Samba 4 client library)

  • DIF/DIX support for SCSI

  • dm-era is a device mapper target that records when blocks are written to a device and is typically intended for use by backup applications

  • fence_ipmilan agent diagnostic pulse

  • fence_sanlock agent for luci

  • FUSE (Filesystem in Userspace)

  • keepalived daemon for network load balancing and high availability

  • Kerberos v1.10 DIR cache storage type to handle TGTs for multiple KDCs

  • Kernel Media support

  • libqb library for high performance logging, tracing, inter-process communication, and polling by Pacemaker

  • Linux Containers (LXC)

  • LVM metadata dynamic aggregation (using lvmetad daemon)

  • LVM support for thinly-provisioned snapshots (single system only)

  • LVM support for thinly-provisioned logical volumes (single system only)

  • Mellanox SR-IOV Support

  • Pacemaker high-availability cluster manager

  • pcs utility for cluster configuration and management

  • Performance Co-Pilot (PCP) provides support for monitoring and managing performance at the system level

  • Performance monitoring in KVM guests

  • Precision Time Protocol (PTP) linuxptp implementation

  • PTP kernel driver support

  • QFQ queuing discipline

  • rgmanager support for disabling via /etc/cluster.conf

  • System monitoring using SNMP for KVM hosts

  • Thin-provisioning and scalable snapshots

  • trousers and tpm-tools packages that support Trusted Platform Module (TPM) hardware

  • vCPU hot unplug


FUSE is a supported feature in the UEK R2, UEK R3 and UEK R4 distributions.

LXC is a supported feature in the UEK R3 and UEK R4 distributions.