Chapter 3.
293
Technology Previews
Technology Preview
features are currently
not
supported under Red Hat Enterprise Linux subscription
services, may not be functionally complete, and are generally not suitable for production use.
However, these features are included as a customer convenience and to provide the feature with wider
exposure.
Customers may find these features useful in a non-production environment. Customers are also free
to provide feedback and functionality suggestions for a Technology Preview feature before it becomes
fully supported. Erratas will be provided for high-severity security issues.
During the development of a Technology Preview feature, additional components may become
available to the public for testing. It is the intention of Red Hat to fully support Technology Preview
features in a future release.
Brocade BFA Fibre-Channel/FCoE driver
the
bfa
driver for Brocade Fibre Channel Host Bus adapters has been added to Red Hat
Enterprise Linux 5.5 as a Technology Preview.
BZ#475695
1
ext4
The latest generation of the ext filesystem,
ext4
, is available in this release as a Technology
Preview.
Ext4
is an incremental improvement on the
ext3
file system developed by Red Hat and
the Linux community. The release name of the file system for the Technology Preview is
ext4dev
.
The file system is provided by the
ext4dev.ko
kernel module, and a new
e4fsprogs
package,
which contains updated versions of the familiar e2fsprogs administrative tools for use with ext4. To
use, install
e4fsprogs
and then use commands like
mkfs.ext4dev
from the e4fsprogs program
to create an ext4-base file system. When referring to the filesystem on a mount commandline or
fstab file, use the filesystem name
ext4dev
.
FreeIPMI
FreeIPMI
is now included in this update as a Technology Preview. FreeIPMI is a collection of
Intelligent Platform Management IPMI system software. It provides in-band and out-of-band
software, along with a development library conforming to the Intelligent Platform Management
Interface (IPMI v1.5 and v2.0) standards.
For more information about FreeIPMI, refer to
http://www.gnu.org/software/freeipmi/
TrouSerS and tpm-tools
TrouSerS
and
tpm-tools
are included in this release to enable use of
Trusted Platform Module
(TPM) hardware.TPM hardware features include (among others):
• Creation, storage, and use of RSA keys securely (without being exposed in memory)
• Verification of a platform's software state using cryptographic hashes
TrouSerS
is an implementation of the Trusted Computing Group's Software Stack (TSS)
specification. You can use TrouSerS to write applications that make use of TPM hardware.
tpm-
tools
is a suite of tools used to manage and utilize TPM hardware.
For more information about TrouSerS, refer to
http://trousers.sourceforge.net/
.
1
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=475695
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