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Red Hat Enterprise Linux 5



Release Notes
=============


Release Notes for Red Hat Enterprise Linux 5.11
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Edition 11


Red Hat Customer Content Services

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Abstract

Red Hat Enterprise Linux minor releases are an aggregation of individual
enhancement, security and bug fix errata. The Red Hat Enterprise Linux
5.11 Release Notes document the major changes made to the Red Hat
Enterprise Linux 5 operating system and its accompanying applications for
this minor release. Detailed notes on all changes in this minor release
are available in the Technical Notes.

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Preface

1. Installation and Booting

2. Kernel

3. Device Drivers

4. Subscription Management

5. Virtualization

6. Industry Standards and Certification

A. Revision History



Preface
=======

The Release Notes provide high-level coverage of the improvements and
additions that have been implemented in Red Hat Enterprise Linux 5.11.
For detailed documentation on all changes to Red Hat Enterprise Linux for
the 5.11 update, refer to the Technical Notes.



Chapter 1. Installation and Booting
===================================


dmidecode Supports SMBIOS

The dmidecode utility now supports System Management BIOS (SMBIOS)
version 2.8, which enables dmidecode to automate builds and deployments
on a wider variety of hardware.



Chapter 2. Kernel
=================


Timeout Value Control

The Red Hat Enterprise Linux 5.11 kernel now includes an option to
control the timeout value for I/O error recovery commands. Previously,
the retry value was set to 5, which resulted in 90-second timing out
messages. Reducing the number of retries allows for a more efficient
management of timeout layers.


LSI 12 Gb/s adapters with the MegaRAID SAS driver

LSI MegaRAID SAS 9360/9380 12Gb/s controllers, previously supported as a
Technology Preview, are now fully supported in Red Hat Enterprise Linux
5.11.



Chapter 3. Device Drivers
=========================


ProLiant Servers Support

The cciss driver now supports ProLiant servers with the latest HP SAS
Smart Array controllers.



Chapter 4. Subscription Management
==================================


Enhanced Error Messaging in Red Hat Support Tool

The Red Hat Support Tool now displays better error messages when the tool
is unable to download debug symbols, for example due to insufficient disk
space.


Subscription Manager

The Subscription Manager in Red Hat Enterprise Linux 5.11 generates the
redhat.repo file immediately after user attachment and does not wait for
the yum utility. The Subscription Type field has been included in the
Subscription Manager. You can view the field in the command-line
interface as well as the graphical user interface to inform you about the
kind of subscription that is used, which determines the attributes that
drive subscription's behavior. You can now enable and disable
repositories to manage directly in the GUI of Subscription Manager.
Several enhancements to the command-line interface have been introduced:

  *  In Red Hat Enterprise Linux 5.11, the rhsm-debug system tool creates
    a tar file that contains files to be attached to bug reports.

  *  Two new fields have been added to the output of the
    subscription-manager list --available command. The Provides field
    shows the names of the products that the system is eligible for. The
    Suggested field has been added to facilitate compliance and provide
    parity with the GUI.

  *  The output of the subscription-manager list --available command now
    includes the stock-keeping unit (SKU).



Chapter 5. Virtualization
=========================


Support for ESXi

When the virt-who agent runs on Red Hat Enterprise Linux 5.11, virt-who
can now communicate with VMWare ESXi and obtain the host and guest
mapping information for Red Hat Subscription Manager.



Chapter 6. Industry Standards and Certification
===============================================


NIST Certification for OpenSCAP

OpenSCAP 1.0.8 has been certified by the National Institute of Standards
and Technology’s (NIST) Security Content Automation Protocol (SCAP) 1.2
in the Authenticated Configuration Scanner category with the Common
Vulnerabilities and Exposure (CVE) option. OpenSCAP provides a library
that can parse and evaluate each component of the SCAP standard in order
to make creating new SCAP tools convenient. Also, OpenSCAP offers a
multi-purpose tool designed to format content into documents or scan the
system based on this content.



Revision History
================

Revision History

Revision 0.0-0.0

Tue Aug 05 2014

Milan Navrátil

Release of the Red Hat Enterprise Linux 5.11 Release Notes.
