[Fwd: Red Hat Enterprise Linux 3 Update 4 *Beta* Availability Announcement]

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	*Beta* Availability Announcement
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Subject: Red Hat Enterprise Linux 3 Update 4 *Beta* Availability Announcement
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Red Hat is pleased to announce the availability of the *beta*
release of Update 4 for the Red Hat Enterprise Linux 3 family 
of products, including:

 - Red Hat Enterprise Linux AS (v. 3 for x86)
 - Red Hat Enterprise Linux AS (v. 3 for Itanium)
 - Red Hat Enterprise Linux AS (v. 3 for AMD64 and Intel(r) EM64T)
 - Red Hat Enterprise Linux AS (v. 3 for iSeries and pSeries)
 - Red Hat Enterprise Linux AS (v. 3 for S/390)
 - Red Hat Enterprise Linux AS (v. 3 for zSeries)
 - Red Hat Enterprise Linux ES (v. 3 for x86)
 - Red Hat Enterprise Linux ES (v. 3 for Itanium)
 - Red Hat Enterprise Linux ES (v. 3 for AMD64 and Intel(r) EM64T)
 - Red Hat Enterprise Linux WS (v. 3 for x86)
 - Red Hat Enterprise Linux WS (v. 3 for Itanium)
 - Red Hat Enterprise Linux WS (v. 3 for AMD64 and Intel(r) EM64T)
 - Red Hat Desktop (v. 3 for x86, AMD64 and Intel(r) EM64T)

This update beta includes the following enhancements:
  
 - Availability of a full set of updated installable CD ISO 
    images via Red Hat Network, with OS package updates and 
    install-time support for new hardware.

 - Availability of updated Extras ISO images via Red Hat 
    Network, with third party package updates.

 - Expanded runtime compatibility library coverage for 
    multi-arch platforms, including AMD64/Intel(r) EM64T,
    Itanium2, IBM iSeries/pSeries, and IBM zSeries.

 - Updated Intel IA32 Execution Layer for the Itanium2
    architecture.
 
 - iSCSI software initiator support, and a new package 
    iscsi-initiator-tools with supporting daemon and utilities.

 - Local disk kernel crashdump support for AMD64 and 
    Intel(r) EM64T platforms.

 - Driver updates including Adaptec RAID (aacraid), 
    LSI Logic RAID (megaraid), IBM ServeRAID (ips), LSI Logic 
    MPT Fusion (mpt*), Compaq SA53xx Controllers (cciss), 
    QLogic Fibre Channel (qla2xxx), Intel PRO/1000 (e1000), 
    Intel PRO/100 (e100), Broadcom Tigon3 (tg3),
    Network Bonding (bonding), Emulex (lpfc), i810 Audio,
    PCNet32, FCP adapter for zSeries (zfcp), and Serial ATA 
    (libata).

 - Security updates, bug fixes, and feature enhancements to
    numerous system packages.

Packages updated or added in this beta release include:
  amtu, anaconda, at, autofs, bind, bonobo-activation, busybox, 
  caching-nameserver, devlabel, dhcp, eal3-certification, esound,
  evolution, firstboot, freeradius, gaim, gcc, gdb, gimp-print,
  glibc, gnome-desktop, gtk2, guile, httpd, hwdata, ia32el, 
  initscripts, ipsec-tools, iputils, iscsi-initiator-tools, kernel, 
  krb5, kudzu, laus, libsvg2, libtiff, lvm, mailman, man-pages, 
  metacity, modutils, mysql, nedit, net-snmp, net-snmp, net-tools, 
  nfs-utils, openssh, pam, php, piranha, procps, psacct, pump, 
  quotactl, redhat-config-date, redhat-config-netboot, 
  redhat-config-services, redhat-config-users, rhn-applet, 
  rh-postgresql, rpm, rusers, shadow-utils, sysreport, sysstat, 
  tcsh, tftp, tzdata, up2date, usermode, util-linux, vim, vnc, 
  vsftpd, vte, xchat, xscreensaver, ypbind, ypserv, yp-tools

The beta update packages and CD images are intended for testing 
purposes only, and will be followed up with official, supported 
update packages delivered as official product errata when testing 
is complete.  Red Hat may, at any time, change the contents of 
any or all of these beta updates.  The beta testing period is 
scheduled to continue through November 17, 2004.

Please remember that this beta software is not supported and 
is not intended for production environments!  Please do not publish
any benchmark or performance results based on this beta release.  
Upgrades will *not* be supported from the beta update to the 
subsequent official update; a fresh base install will be 
required.

This message includes details on obtaining the early access software, 
reporting bugs, and communicating with Red Hat and other testers via 
mailing lists during the early access period.

A draft of the beta release notes for this update is attached.

For specific package change logs and version levels, consult the
architecture-specific channel package lists on Red Hat Network.

Accessing the Software
----------------------

The beta update packages are available via Red Hat Network
(https://rhn.redhat.com) to all current Red Hat Enterprise Linux
subscribers.  The updates are available via two methods:
 
(a) Install from new ISO images

Once you have logged in to RHN, click on the "Software" tab and choose
the appropriate child channel entitled "<product name> Beta".  
Click on the 'Downloads' sub-tab, and follow the directions 
provided to download installable ISO images for your platform and
release.  

For Red Hat Enterprise Linux 3 Update 4 Beta, a completely
new installable ISO image set is provided.

(b) Update existing test installation using RHN beta channel

Once you have logged in to RHN, click on the "Software" tab and choose
the appropriate child channel entitled "<product name> Beta".  
Click on the "Target Systems" subtab, and select all of the 
non-production, test systems you wish to run in the beta errata 
program.  Click on the "subscribe" button to apply the 
selection(s).

Once the beta channel has been subscribed, run the following command 
from a shell prompt on each target system to update any packages for
which new versions exist:

  up2date

You will see a list of packages that are available to be installed.
Select all packages and step through the instructions.  Note: you will
optionally be able to skip installation of the kernel.  Do not skip the
kernel!  Be sure to select it as well for installation.

For more information, Red Hat Network user guides and FAQs are 
available on the RHN website at https://rhn.redhat.com.

* Note: Systems that are updated with the beta update will not be 
upgradeable to the official update.  A fresh install will be 
required to ensure support! *

Bug Reporting
-------------

To ensure accurate tracking and follow-up, all bugs should be reported
using Bugzilla at:

  http://bugzilla.redhat.com

If you do not have a bugzilla account, please visit this URL and 
create one.
 
If you already have a bugzilla account:
 
1.  On bugzilla's home page at http://bugzilla.redhat.com, choose the
"New" tab at the top of the web page.  Proceed to Step 3, Choosing 
Your Product by clicking that button at the bottom of the web page.
 
2.  Choose "Red Hat Enterprise Linux Public Beta".  Proceed to Step 4, 
Choosing Component by clicking that button at the bottom of the 
web page.
 
3.  Choose the component against which you want to report a problem,
such as kernel, glibc, etc.

4.  Scroll the page to Step 5, Choosing Version and Architecture.  In
the Version field, choose 'rhel3-update'.  Choose the appropriate
architecture.  Proceed to Step 6, Additional Info, by clicking that 
button at the bottom of the web page.
 
5.  Provide the information about the problem you're reporting by
entering information in the appropriate fields. Then click the "Open
Bugzilla Entry Form" button. In the summary of the bug, and in the
text describing your problem, please state clearly that you are using 
a *BETA* package and provide the full package versions of any components 
you are experiencing problems with (as beta packages may be updated 
during the beta period).  Check to make sure that all information is 
accurate and click the Commit button to submit your problem report.

Mailing Lists
-------------

Red Hat has created a public mailing list for communication during 
this and all future Red Hat Enterprise Linux 3 beta programs. 

* [email protected]

  A public general discussion mailing list for beta testers of 
  Red Hat Enterprise Linux 3 updates.  Subscribe at:
    https://www.redhat.com/mailman/listinfo/taroon-beta-list

Thank you for participating in the Red Hat Enterprise Linux 3
Update 4 beta program. 

Sincerely,

The Red Hat Enterprise Linux Team

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          Red Hat Enterprise Linux AS 3 Update 4 *Beta* Release Notes

   Copyright (c) 2004 Red Hat, Inc.

     ----------------------------------------------------------------------

Introduction

   The following topics are covered in this document:

     o Changes to the Red Hat Enterprise Linux installation program
       (Anaconda)

     o General information

     o Kernel-related information

Changes to the Red Hat Enterprise Linux Installation Program (Anaconda)

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

  Note

   In order to upgrade an already-installed Red Hat Enterprise Linux 3 system
   to Update 4, you must use Red Hat Network to update those packages that
   have changed. The use of Anaconda to upgrade to Update 4 is not supported.

   Use Anaconda only to perform a fresh install of Red Hat Enterprise Linux 3
   Update 4.

     o If you are copying the contents of the Red Hat Enterprise Linux 3
       Update 4 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 Extras 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.

General Information

   This section contains general information not specific to any other
   section of this document.

     o Red Hat Enterprise Linux 3 Update 4 now includes Mailman, an
       electronic mail discussion and e-newsletter lists system. Mailman is
       integrated with the Web, making it easy for users to manage their
       accounts and for list owners to administer their lists. Mailman
       supports built-in archiving, automatic bounce processing, content
       filtering, digest delivery, spam filters, and more.

Kernel-Related Information

   This section contains information related to the Red Hat Enterprise Linux
   3 Update 4 kernel.

     o The Open Sound System (OSS) AC97 plugin infrastructure has been
       backported to the Red Hat Enterprise Linux 3 Update 4 kernel. This
       allows registering modules to modify the behavior of the OSS subsystem
       depending on the AC97 CODEC(s) in use.

  Note

       Because the OSS subsystem is not supported in the hugemem kernel, the
       AC97 plugin infrastructure is unavailable in the hugemem kernel.

     o The release notes for Red Hat Enterprise Linux 3 Update 3 contained
       information related to Exec-Shield. This information was not entirely
       accurate; the corrected information appears below.

       The Red Hat Enterprise Linux 3 Update 4 kernel includes a new security
       feature known as Exec-Shield. Exec-Shield is a security-enhancing
       modification to the Linux kernel that makes large parts of
       specially-marked programs -- including their stack -- not executable.
       This can reduce the potential damage of some security holes, such as
       buffer overflow exploits.

       Exec-Shield can also randomize the virtual memory addresses at which
       certain binaries are loaded. This randomized VM mapping makes it more
       difficult for a malicious application to improperly access code or
       data based on knowledge of the code or data's virtual address.

       Exec-Shield's behavior can be controlled via the proc file system. Two
       files are used:

          o /proc/sys/kernel/exec-shield

          o /proc/sys/kernel/exec-shield-randomize

       The /proc/sys/kernel/exec-shield file controls overall Exec-Shield
       functionality, and can be manipulated using the following command:


 echo <value> > /proc/sys/kernel/exec-shield
        

       Where <value> is one of the following:

          o 0 -- Exec-Shield (including randomized VM mapping) is disabled
            for all binaries, marked or not

          o 1 -- Exec-Shield is enabled for all marked binaries

       The default value for /proc/sys/kernel/exec-shield is 1.

       The /proc/sys/kernel/exec-shield-randomize file controls whether
       Exec-Shield randomizes VM mapping, and can be manipulated using the
       following command:


 echo <value> > /proc/sys/kernel/exec-shield-randomize
        

       Where <value> is one of the following:

          o 0 -- Randomized VM mapping is disabled

          o 1 -- Randomized VM mapping is enabled

       The default value for /proc/sys/kernel/exec-shield-randomize is 1.

       It is also possible to configure Exec-Shield by including one (or
       both) of the following lines in the /etc/sysctl.conf file:


 kernel.exec-shield=<value>
 kernel.exec-shield-randomize=<value>
        

       (Where <value> is as previously described.)

       Exec-Shield can also be disabled at a system level by means of a
       kernel boot option. Appending the following parameter to the "kernel"
       line(s) in the /etc/grub.conf file will disable Exec-Shield:


 exec-shield=0
        

  Note

       Exec-Shield functionality is available only to binaries that have been
       built (and marked) using the toolchain (compiler, assembler, linker)
       available with Red Hat Enterprise Linux 3. Binaries that have been
       built using a different version of the toolchain can still be used,
       but since they will not be marked, they will not take advantage of
       Exec-Shield.

       Application developers should keep in mind that, in the majority of
       cases, GCC correctly marks its generated code as being capable of
       using Exec-Shield. In the few instances (usually caused by inline
       assembler or other nonportable code) where GCC non-optimally (or, more
       rarely, incorrectly) marks generated code, it is possible to pass GCC
       options to obtain the desired result.

       The options controlling binary marking at the assembler level are:


 -Wa,--execstack
 -Wa,--noexecstack
        

       The options controlling binary marking at the linker level are:


 -Wl,-z,execstack
 -Wl,-z,noexecstack
        

       It is also possible to exert more fine-grained control by explicitly
       disabling Exec-Shield for a specific binary at run time. This is done
       using the setarch command:


 setarch i386 <binary>
        

       (Where <binary> represents the binary to be run.) The binary is then
       run without Exec-Shield functionality.

       The proc file /proc/self/maps can be used to observe Exec-Shield's
       effects. By using cat to display the current process's VM mapping, you
       can see Exec-Shield at work. Similarly, you can use setarch in
       conjunction with cat to see how normal VM mapping differs from
       Exec-Shield's mapping.

   ( x86 )

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