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Note

the env_reset sudoers option from newer sudo will reset the PATH environment

variable. This is different from the behaviour in sudo-1.9.8. To keep the old behaviour

simply add PATH variable into env_keep in sudoers file.

LVM- based Cluster mirroring

With this update, the ability to create LVM mirrors in a cluster environment (i.e. while using

CLVM) is now available in Red Hat Enterprise Linux It provides for simultaneous access from

multiple cluster machines, like when using a cluster-aware file system. T his solution is

compatible with existing single-machine mirrors. When switching a mirrored logical volume

between single-machine and cluster-aware, no resynchronization is necessary.

1.2. Resolved Issues

system -config-network requires the fonts provided with xorg-x11-fonts-Type1 in order to

display. However, this fonts package was not previously set as a dependency for system -config-

network and it was therefore possible (for example, in the case of a minimal installation) for

system -config-network to be present on a system and yet unable to function because these

fonts were missing. This update sets xorg-x11-fonts-Type1 as a dependency for system -

config-network to ensure that these fonts will be available and that system -config-network

will display correctly.

In Red Hat Enterprise Linux 5.2, a 64-bit version of httpd was included in addition to the existing 32-

bit httpd in the PowerPC architecture. If a user installed both versions, an htt pd conflict would

occur, preventing ht tpd from functioning properly.

To resolve this issue, the 64-bit version of htt pd has been removed from this release. Any systems

with the previous 64-bit version of httpd installed should remove the package before upgrade.

1.3. Driver Updates

the SCSI device handler infrastructure (scsi_dh) has been updated, providing added support for LSI

RDAC SCSI based storage devices.

the tg3 driver for Broadcom T igon3 ethernet devices has been updated to version 3.93. T his applies

several upstream changes for new hardware. However, the 5785 hardware is not fully supported.

This device may be detected by the driver, but lack of PHY support may cause these chips to not

function correctly and may require the user disable any on-board 5785 cards in the system BIOS.

scsi-target-utils now features iSCSI Extensions for RDMA (iSER), which is based on the Linux

Target (tgt) framework. iSER is included in this release as a T echnology Preview, and provides

capabilities for both single and multiple portals on different subnets. Note, however, that there are

known bugs with using multiple portals on the same subnet.

To set up an iSER target component, install the scsi-target-utils and libibverbs-devel

packages. The corresponding library package for your system's Infiniband hardware is also required.

For example, in HCAs that use the cxgb3 driver the libcxgb3 package is needed, and for HCAs

using the m thca driver the libm thca package is need.

The MPT Fusion driver has been updated to version 3.04.06, providing the following bugfixes and

enhancements:

Previously, the MPT Fusion driver always allocated I/O resources, even if they were not required,

Red Hat Enterprise Linux 5 5.3 Release Notes

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Red Hat ENTERPRISE 5.3 RELEASE NOTES Guía de instalación Pagina 9