Red Hat Enterprise Linux 4 Update 5 Release Notes

  Copyright © 2007 Red Hat, Inc. and others. This material may be distributed
  only subject to the terms and conditions set forth in the Open Publication
  License, v1.0, available at http://www.opencontent.org/openpub/.
    _________________________________________________________________

Introduction

  The following topics are covered in this document:
    * Installation-Related Notes
    * General Information
    * Technology Previews
    * Kernel Notes
    * Changes to Drivers and Hardware Support

  Some updates on Red Hat Enterprise Linux 4 Update 5 may not appear in this
  version of the Release Notes. An updated version of the Red Hat Enterprise
  Linux 4 Update 5 Release Notes may also be available at the following URL:

  http://www.redhat.com/docs/manuals/enterprise/

Installation-Related Notes

  The following section includes information specific to installation of Red
  Hat Enterprise Linux and the Anaconda installation program.

Note

  In order to upgrade an existing Red Hat Enterprise Linux 4 installation to
  Update 5, you must use Red Hat Network to update those packages that have
  changed.

  You may use Anaconda to perform a fresh installation of Red Hat Enterprise
  Linux 4 Update 5 or to perform an upgrade from the latest updated version of
  Red Hat Enterprise Linux 4.
    * If you are copying the contents of the Red Hat Enterprise Linux 4 Update
      5 CD-ROMs (in preparation for a network-based installation, for example)
      be sure you copy the CD-ROMs for the operating system only. Do not copy
      the Supplementary CD-ROM, or any of the layered product CD-ROMs, as this
      will overwrite files necessary for Anaconda's proper operation.
      These CD-ROMs must be installed after Red Hat Enterprise Linux has been
      installed.
    * If you installed Red Hat Enterprise Linux 4 Update 5 through a serial
      console, the login prompt may not appear. To work around this, open
      /etc/yaboot.conf and locate the following line:
       append="console=tty0 console=ttyS4 rhgb quiet"
      Edit this line by switching the order of console=tty0 and console=ttyS4
      such that the line now reads as follows:
       append="console=ttyS4 console=tty0 rhgb quiet"

General Information

  ql2xfailover Support and Multipath
         Red Hat Enterprise Linux 4 does not include support for ql2xfailover,
         as it has not been accepted upstream.

         To implement multipathing, use mdadm instead. For more information
         about  dm-multipath, consult its man page using the command man
         multipath.

  MCFG on AMD-based Systems
         During PCI probing, Red Hat Enterprise Linux 4 Update 5 attempts to
         use information obtained from MCFG (memory-mapped PCI configuration
         space). On AMD-systems, this type of access does not work on some
         buses, as the kernel cannot parse the MCFG table.

         To work around this, add the parameter pci=conf1 or pci=nommconf on
         the kernel boot line in /etc/grub.conf. For example:

title Red Hat Enterprise Linux AS (2.6.9-42.0.2.EL)
       root (hd0,0)
       kernel /vmlinuz-2.6.9-42.0.2.EL ro root=/dev/VolGroup00/LogVol00 rhgb q
uiet pci=conf1
       initrd /initrd-2.6.9-42.0.2.EL.img

         Doing this instructs the kernel to use PCI Conf1 access instead of
         MCFG-based access.

  Rollbacks Using up2date
         The up2date options --undo and list-rollbacks are now deprecated.
         Currently, the recommended method for performing a rollback is to use
         the  Multi-state  Rollback feature provided by the Provisioning
         entitlement on Red Hat Network. For more information about this,
         refer to http://www.redhat.com/rhn/rhndetails/provisioning/.

         Alternatively, you can also downgrade an RPM manually. To do this,
         obtain the old RPM and run the following command:

         rpm -Uvh --oldpackage --nosignature --nodigest <filename of old RPM>

  Virtualization
         Red  Hat  Enterprise  Linux  4  Update  5 is now supported as a
         paravirtualized guest, but cannot be used as dom0.

         At present, paravirtualization for Red Hat Enterprise Linux 4 Update
         5 has the following issues:

         + The PV-FB (ParaVirtualized FrameBuffer) currently does not support
           keymaps other than en-US. As such, other keyboards may not be able
           to type certain keystrokes. This issue will be addressed in a
           future update of Red Hat Enterprise Linux 4.
         + Paravirtualized  domains  can only auto-detect relative mouse
           movement, and pointer movement is rather erratic. This will be
           addressed in a future update of Red Hat Enterprise Linux 4.
         + Only  virtualized  network  and disk devices are supported on
           paravirtualized guests. Direct control by guests of PCI, USB,
           printer or serial devices is not supported.

  Slow Disk Dump
         Slow disk dump may be improved using the block_order parameter. This
         parameter specifies the I/O block size to be used when writing the
         dump. Testing has shown that the default value 2 works well for most
         adapters and system configurations.

         Note  that  disk  dumps on Megaraid hardware (in certain system
         platforms and under certain configurations) may be prohibitively
         slow.  To  address  this, increase the value of the block_order
         parameter.

         Larger  block_order values consume more module memory. For more
         information   about   the   block_order   parameter,  refer  to
         /usr/share/doc/diskdumputils-<version>/README(replace<version>with
         the corresponding version of the diskdumputils package installed).

  iSeries Access for Linux
         The iSeries ODBC Driver for Linux has been replaced by a new product
         -- the iSeries Access for Linux. This new product can be downloaded
         at the following link:

         http://www.ibm.com/eserver/iseries/access/linux/

         iSeries Access for Linux is the latest offering in the iSeries Access
         product  line. It offers Linux-based access to iSeries servers.
         iSeries Access for Linux allows you to :

         + Access the DB2 UDB (Universal Database) for iSeries using its ODBC
           Driver
         + Establish a 5250 session to an iSeries server from a Linux client
         + Access the DB2 UDB via the EDRS (Extended Dynamic Remote SQL)
           driver
         + Support 32-bit (i386 and PowerPC) and 64-bit (x86-64 and PowerPC)
           platforms

  ibmasm
         The ibmasm package is used to facilitate communication with the IBM
         Advance System Management PCI Adapter, also known as RSA I. If you
         are using the RSA II, you need to manually uninstall the ibmasm
         package after downloading the corresponding package for RSA II.

Technology Previews

  Technology  Preview features are currently not supported under Red Hat
  Enterprise Linux 4 Update 5 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.

  Systemtap
         Systemtap provides free software (GPL) infrastructure to simplify the
         gathering of information about the running Linux system. This assists
         diagnosis of a performance or functional problem. With the help of
         systemtap, developers no longer need to go through the tedious and
         disruptive instrument, recompile, install, and reboot sequence that
         may be otherwise required to collect data.

  Frysk GUI
         The  goal  of  the  frysk  project is to create an intelligent,
         distributed, always-on system monitoring and debugging tool that
         allows developers and system administrators to:

         + monitor running processes and threads (including creation and
           destruction events)
         + monitor the use of locking primitives
         + expose deadlocks
         + gather data
         + debug any given process by choosing it from a list or allowing
           frysk to open a source code (or other) window on a process that is
           crashing or misbehaving

         In Red Hat Enterprise Linux 4 Update 5 the frysk graphical user
         interface is a technology preview, whereas the frysk command line
         interface is fully supported.

Kernel Notes

  This section lists updates related to the kernel.

  Generic Kernel Notes

         + CONFIG_SERIAL_8250_MANY_PORTS has been increased to 64.
         + sata_nv module now supports diskdump.
         + acpiphp  driver  now supports ACPI-based hotplugs for bridged
           adapters.
         + (x86;x86_64) Added paravirtualization guest support
         + CIFS (Common Internet file system) has been upgraded to version
           1.45

  Platform-Specific Updates

         + PowerNow! (with new frequency control) is now supported on the H206
           processor
         + Timer skew issue on PowerNow! drivers is now fixed
         + Quad-core processors are now supported
         + RDTSCP (Read Time-Stamp Counter Pair), an instruction that provides
           better resolution in reading a processor's time stamp, is now
           supported
         + PCI-Express is now supported for the SGI Altix platform
         + SHUB2 is now supported

Changes to Drivers and Hardware Support

    * Sealevel 8-port serial cards are now supported
    * Added a new PWC (Philips Web Cam) driver that supports a wider range of
      webcam models
    * IBM Advanced Management Module 2 has been added to the USB storage
      whitelist for USB devices with multiple LUNs (Logical Unit Numbers)
    * EDAC  (Error Detection and Correction) is now supported on the AMD
      Opteron
    * Updated Alsa driver to version 1.0.9
    * Added Alsa support for Broadwater platforms
    * Updated LMSensors smsc47b397 driver
    * Updated ixgb driver to version 1.0.109-k2
    * Updated r8169 network driver to version 2.2LK
    * Pathscale IB adapter is now supported
    * Added qla4xxx driver to support Qlogic iSCSI hardware initiator. Also
      added qla3xxx driver to provide LAN connections on the same hardware.
    * Updated Infiniband support to OFED 1.1
    * Updated e1000 driver to version 7.2.7-k2 to support Intel Pro/1000 PT
      adapter, ICH8 LAN, and Intel Dual Port 1Gb Ethernet PCI-Express adapter
    * Updated BNX2 driver to version 1.4.43-rh
    * Updated Broadcom TG3 driver to version 3.64-rh to support Broadcom
      BCM5787M, the Broadcom 5715 PCIExpress adapter and the Broadcom 5704S
      chip
    * Updated ipr driver to support SAS/SATA
    * LSI Logic SAS ZCR is now supported
    * sata driver now supports ULi M5289 SATA controller
    * Updated cciss driver
    * Updated qla2xx driver to support SLIM expansion card on JS21
    * Updated MPTSAS driver to version 3.02.73rh
    * Updated the LSI MegaRAID driver
    * 8139cp  networking driver now supports netdump; this enables fully
      virtualized Red Hat Enterprise Linux 4 guests to run netdump

  ( amd64 )

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.