Linux uncrackable...?

[Fernando Cassia]

On Sat, Sep 8, 2012 at 9:57 PM, jdow <jdow at earthlink.net> wrote:

>
> I thought Oracle called their version Unbreakable Linux and that it
> is essentially a clone of RedHat.


Well, yes and no.
Oracle Linux offers you two kernels... one at the same level and CentOS,
and another much more recent.

See... centos 6.3 kernel:
centos 6.3 -2.6.32-279.1.1.el6

uek,2.6.32.300

http://public-yum.oracle
.com/repo/OracleLinux/OL6/latest/i386/kernel-uek-2.6.32-300.29.2.el6uek.i686.rpm

http://en.wikipedia.org/wiki/Oracle_Linux#RHEL_compatibility
---
Oracle distributes Oracle Linux with two kernels:

    Red Hat Compatible Kernel - identical to the kernel shipped in Red Hat
Enterprise Linux (RHEL).
    Unbreakable Enterprise Kernel - based on a later Linux 2.6-series
kernel, with Oracle's own enhancements for OLTP, InfiniBand, and SSD disk
access, NUMA-optimizations, Reliable Datagram Sockets (RDS),
async I/O, OCFS2, and networking.[8][9]
---

https://oss.oracle.com/ol6/docs/RELEASE-NOTES-UEK2-en.html

---
New Btrfs features/functionality

    An updated version of btrfsfsck, a tool to check and repair a Btrfs
file system, is now included in the btrfs-progs package. This new btrfsck
now supports a --repair option that allows fixing errors in the extent
allocation tree and block group accounting.
(snip)
(snip)

Xen domU improvements

Several bug fixes and improvements have been incorporated to make the
Unbreakable Enterprise Kernel scale and cooperate better as a guest (domU)
in Oracle VM and Xen.

    Xen block backend from Linux 3.3 kernel. This provides the fully
featured Xen blkback along with extra features, such as passing through a
flush (a lighter version of barrier), discard (also known as
TRIM or SCSI UNMAP) and various bug-fixes and enhancments.
(snip)
Numerous code cleanups and bug fixes (e.g. in the following areas: memory
balloning, blkfront, P2M, E820, IRQ, MMU, Gntalloc driver)

Other improvements

    dm-nfs: device-mapper target that allows you to treat an NFS file as a
block device. It provides loopback-style emulation of a block device using
a regular file as backing storage. The backing file resides on a remote
system and is accessed via the NFS protocol.

Driver Updates

The Unbreakable Enterprise Kernel supports a vast range of hardware and
devices. In close cooperation with hardware and storage vendors, several
device drivers have been updated by Oracle. The list below
only indicates the updated drivers that deviate from the versions included
in mainline Linux 3.0.16.
Storage drivers

    Broadcom bnx2i 2.7.0.3
    Broadcom bnx2fc 1.0.4
    Brocade bfa 3.0.2.2
    Emulex be2iscsi 4.1.239.0
    Emulex lpfc 8.3.5.58.2p
    LSI mpt2sas 12.100.00.00
    LSI megaraid_sas 5.40-rc1
    QLogic qla2xxx 8.03.07.12.39.0-k
    QLogic qla4xxx 5.02.00.00.06.02-uek2

Network drivers

    Broadcom bnx2 2.1.11
    Broadcom bnx2x 1.70.00-0
    Broadcom cnic 2.5.7
    Brocade bna 3.0.2.2
    Cisco enic 2.1.1.24
    Emulex be2net 4.1.297o
    Intel e1000e 1.4.4-k
    Intel ixgbevf 2.1.0-k
    Intel igbvf 2.0.0-k
    Intel ixgbe 3.4.8-k
    Mellanox mlx4_en 1.5.4.2
    QLogic netxen_nic 4.0.77
    QLogic qlcnic 5.0.25.1

---
Sounds like value-added to me, for those that need that functionality.

For those that do not, RHEL or CentOS is just fine.

Just my $0.02
FC
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