[El-errata] Oracle Linux Release 6 Update 5 for x86 (32 bit) and x86_64 (64 Bit) architectures
Errata Announcements for Oracle Linux
el-errata at oss.oracle.com
Wed Nov 27 13:07:31 PST 2013
Oracle is pleased to announce the general availability of Oracle Linux 6.5 for x86 (32 bit) and x86_64 (64 bit) architectures.
Oracle Linux 6 Update 5 ships with three sets of kernel packages:
Unbreakable Enterprise Kernel Release 2
(|kernel-uek-2.6.39-400.211.1.el6uek|) for x86
Unbreakable Enterprise Kernel Release 3
(|kernel-uek-3.8.13-16.2.1.el6uek|) for x86|_|64
Red Hat Compatible Kernel (|kernel-2.6.32-431.el6|) for x86 and x86_64
By default, both the Unbreakable Enterprise Kernel and the Red Hat Compatible Kernel are installed.
UEK R3 includes the following major improvements over UEK R2:
Integrated DTrace support in the UEK R3 kernel and user-space
tracing of DTrace-enabled applications.
Device mapper support for an external, read-only device as the
origin for a thinly-provisioned volume.
The|loop|driver provides the same I/O functionality as|dm-nfs|by
extending the AIO interface to perform direct I/O. To create the
loopback device, use the*losetup*command instead of*dmsetup*.
The|dm-nfs|module is not provided with UEK R3.
Btrfs*send*and*receive*subcommands allow you to record the
differences between two subvolumes, which can either be snapshots of
the same subvolume or parent and child subvolumes.
Btrfs quota groups (/qgroups/) allow you to set different size
limits for a volume and its subvolumes.
Btrfs supports replacing devices without unmounting or otherwise
disrupting access to the file system.
Ext4 quotas are enabled as soon as the file system is mounted.
TCP controlled delay management (/CoDel/) is a new active queue
management algorithm that is designed to handle excessive buffering
across a network connection (/bufferbloat/). The algorithm is based
on for how long packets are buffered in the queue rather than the
size of the queue. If the minimum queuing time rises above a
threshold value, the algorithm discards packets and reduces the
transmission rate of TCP.
TCP connection repair implements process checkpointing and restart,
which allows a TCP connection to be stopped on one host and
restarted on another host. Container virtualization can use this
feature to move a network connection between hosts.
TCP and STCP early retransmit allows fast retransmission (under
certain conditions) to reduce the number of duplicate acknowledgements.
TCP fast open (TFO) can speed up the opening of successive TCP
connections between two endpoints by eliminating one round time trip
(RTT) from some TCP transactions.
The TCP small queue algorithm is another mechanism intended to help
deal with bufferbloat. The algorithm limits the amount of data that
can be queued for transmission by a socket.
The secure computing mode feature (/seccomp/) is a simple sandbox
mechanism that, in strict mode, allows a thread to transition to a
state where it cannot make any system calls except from a very
restricted set (|_exit()|,|read()|,|sigreturn()|, and|write()|) and
it can only use file descriptors that were already open. In filter
mode, a thread can specify an arbitrary filter of permitted systems
calls that would be forbidden in strict mode. Access to this feature
is by using the|prctl()|system call. For more information, see
The OpenFabrics Enterprise Distribution (OFED) 2.0 stack supports
the following protocols:
SCSI RDMA Protocol (SRP) enables access to remote SCSI devices
via remote direct memory access (RDMA)
iSCSI Extensions for remote direct memory access (iSER) provide
access to iSCSI storage devices
Reliable Datagram Sockets (RDS) is a high-performance,
low-latency, reliable connectionless protocol for datagram delivery
Sockets Direct Protocol (SDP) supports stream sockets for RDMA
Ethernet over InfiniBand (EoIB)
IP encapsulation over InfiniBand (IPoIB)
Ethernet tunneling over InfiniBand (eIPoIB)
The OFED 2.0 stack also supports the following RDS features:
Async Send (AS)
Quality of Service (QoS)
Automatic Path Migration (APM)
Active Bonding (AB)
Shared Request Queue (SRQ)
Paravirtualization support has been enabled for Oracle Linux guests
on Windows Server 2008 Hyper-V or Windows Server 2008 R2 Hyper-V.
The Virtual Extensible LAN (VXLAN) tunneling protocol overlays a
virtual network on an existing Layer 3 infrastructure to allow the
transfer of Layer 2 Ethernet packets over UDP. This feature is
intended for use by a virtual network infrastructure in a
virtualized environment. Use cases include virtual machine migration
and software-defined networking (SDN).
For more information, please refer to the online release notes available at:
All packages are available on theUnbreakable Linux Network <http://linux.oracle.com>.
Installable binary and source ISO images will available onOracle Software Delivery Cloud <http://edelivery.oracle.com/linux> shortly.
If ISO images are needed before they are available on Oracle Software Delivery Cloud, please request these via a My Oracle Support service request.
The Oracle Linux Team
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