[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|prctl(2)|manual page.

  *

    The OpenFabrics Enterprise Distribution (OFED) 2.0 stack supports
    the following protocols:

      o

        SCSI RDMA Protocol (SRP) enables access to remote SCSI devices
        via remote direct memory access (RDMA)

      o

        iSCSI Extensions for remote direct memory access (iSER) provide
        access to iSCSI storage devices

      o

        Reliable Datagram Sockets (RDS) is a high-performance,
        low-latency, reliable connectionless protocol for datagram delivery

      o

        Sockets Direct Protocol (SDP) supports stream sockets for RDMA
        network fabrics

      o

        Ethernet over InfiniBand (EoIB)

      o

        IP encapsulation over InfiniBand (IPoIB)

      o

        Ethernet tunneling over InfiniBand (eIPoIB)

    The OFED 2.0 stack also supports the following RDS features:

      o

        Async Send (AS)

      o

        Quality of Service (QoS)

      o

        Automatic Path Migration (APM)

      o

        Active Bonding (AB)

      o

        Shared Request Queue (SRQ)

      o

        Netfilter (NF)

  *

    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:
http://oss.oracle.com/ol6/docs


Software Accessibility

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.


Thank you.

Sincerely,

The Oracle Linux Team

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