Red Hat ENTERPRISE LINUX 5.4 - RELEASE NOTES Release Note
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This document details the Release Notes for Red Hat Enterprise Linux 5.4.
1. Virtualization Updates .............................................................................................................. 2
2. Clustering Updates ................................................................................................................. 3
2.1. Fencing Improvements ................................................................................................. 4
3. Networking Updates ................................................................................................................ 5
4. Filesystems and Storage updates ............................................................................................ 5
5. Desktop Updates .................................................................................................................... 6
5.1. Advanced Linux Sound Architecture .............................................................................. 6
5.2. Graphics Drivers .......................................................................................................... 6
5.3. Laptop Support ............................................................................................................ 7
6. Tools Updates ......................................................................................................................... 7
7. Architecture Specific Support ................................................................................................... 8
7.1. i386 ............................................................................................................................. 8
7.2. x86_64 ........................................................................................................................ 9
7.3. PPC ............................................................................................................................ 9
7.4. s390 ............................................................................................................................ 9
8. Kernel Updates ..................................................................................................................... 11
8.1. General Kernel Feature Support .................................................................................. 11
8.2. General Platform Support ........................................................................................... 13
Linux 5.4
Release Notes
Release Notes for all architectures.
Abstract
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Summary of Contents for Red Hat ENTERPRISE LINUX 5.4 - RELEASE NOTES
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Page 1: Table Of Contents
Red Hat Enterprise Linux 5.4 Release Notes Release Notes for all architectures. Copyright © 2009 Red Hat, Inc.. This material may only be distributed subject to the terms and conditions set forth in the Open Publication License, V1.0 or later (the latest version of the OPL is presently available at http://www.opencontent.org/openpub/). -
Page 2: Virtualization Updates
The KVM hypervisor can only be used with the regular (non-Xen) kernel. Warning While Xen and KVM may be installed on the same system, the default networking configuration for these are different. Users are strongly recommended to only install one hypervisor on a system. http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Technical_Notes/... -
Page 3: Clustering Updates
All updates to clustering in Red Hat Enterprise Linux 5.4 are detailed in the Technical Notes. Further Cluster Suite Overview information on clustering in Red Hat Enterprise Linux is available in the Cluster Administration documents. http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Cluster_Suite_Overview/index.html http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Cluster_Administration/index.html... -
Page 4: Fencing Improvements
Additionally, the following new articles on fencing have been published on the Red Hat Knowledge Base: • SCSI Fencing (Persistent Reservations) with Red Hat Enterprise Linux 5 Advanced Platform Cluster http://kbase.redhat.com/faq/docs/DOC-17809 Suite: http:// • Using fence_vmware with Red Hat Enterprise Linux 5 Advanced Platform Cluster Suite: kbase.redhat.com/faq/docs/DOC-17345... -
Page 5: Networking Updates
File times in NFS are maintained strictly by the server, so the file mtime will not be updated until the data has been transmitted to the server https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=499347 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=483708 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=457975... -
Page 6: Desktop Updates
High Definition Audio (HDA). 5.2. Graphics Drivers The ati driver for ATI video devices has been updated. The i810 and intel drivers for Intel integrated display devices have been updated. The mga driver for Matrox video devices has been updated. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=469848 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=512833... -
Page 7: Laptop Support
• Page Cache and Networking stacks (BZ#497414) • Scheduler • The Gnu Compiler Collection version 4.4 (GCC4.4) is now included in this release as a Technology Preview. This collection of compilers include C, C++, and Fortran compilers along with support libraries. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=485181... -
Page 8: Architecture Specific Support
Release Notes • glibc new MALLOC behaviour: The upstream glibc has been changed recently to enable higher scalability across many sockets and cores. This is done by assigning threads their own memory pools and by avoiding locking in some situations. The amount of additional memory used for the memory pools (if any) can be controlled using the environment variables MALLOC_ARENA_TEST and MALLOC_ARENA_MAX. -
Page 9: X86_64
x86_64 7.2. x86_64 • An optimization error was found in linux-2.6-misc-utrace-update.patch. When running 32- bit processes on a 64-bit machine systems didn't return ENOSYS on missing (out of table range) (Bugzilla #481682 system calls. This kernel release includes a patch to correct this. •... - Page 10 Release Notes new capacity of the processor in the file: /sys/devices/system/cpu/cpuN/ capability. • Control Program Identification (CPI) descriptive data is used to identify individual systems on the Hardware Management Console (HMC). With this update, CPI data can now be associated with a (BZ#475820) Red Hat Enterprise Linux instance.
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Page 11: Kernel Updates
Kernel Updates of the device. The updated qeth driver now correctly reads the new version string format of (BZ#479881) HiperSockets, allowing for a standardization of output format. • In Red Hat Enterprise Linux 5.4, the s390utils package has been rebased to version 1.8.1. For a full list of features that this rebase provides, please refer to the Package Updates section of the Technical Notes (BZ#477189) - Page 12 Core dumps (memory snapshots) are useful for debugging system and kernel crashes. With this update, it is now possible to perform a core dump on systems that utilize hugepages.(BZ#470411) Additionally, kernel panic messages can now be extracted from a core (BZ#485308) dump file (vmcore) using the makedumpfile command. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=470411...
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Page 13: General Platform Support
1.4.1-rc3 (BZ#476301) • Remote Direct Memory Access (RDMA) headers (BZ#477065 BZ#506907) • Reliable Datagram Sockets (RDS) protocol (BZ#476301) • Sockets Direct Protocol (SDP) (BZ#476301) • SCSI RDMA Protocol (SRP) BZ#466086 BZ#506907 • IP over InfiniBand (IPoIB) (BZ#434779 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=485308 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=487567... - Page 14 Release Notes Additionally, the following OFED drivers have been updated to the upstream version 1.4.1-rc3: (BZ#476301, • The cxgb3 and iw_cxgb3 drivers for the Chelsio T3 Family of network devices BZ#504906) (BZ#476301, BZ#506097) • The driver for mthca-based InfiniBand HCA (Host Channel Adapter) (BZ#476301) •...
- Page 15 Driver Updates Note the use of the iwl3945 driver requires installing the iwl3945-firmware package from the supplementary RHN channel. Package version 15.28.2.8-2 or later is required. (ie iwl3945-firmware-15.28.2.8-2 or later) Additionally, the device name, for example as it appears in the output of the `ifconfig` command appears as eth0 (or eth1) when using the ipw3945 driver, when using the iwl3945 driver it is identified as wlan0.
- Page 16 Release Notes • The sky2 driver for ethernet controllers using the Marvell Yukon 2 chipset has been updated. (BZ#484712). • The enic driver for Cisco 10G ethernet devices has been updated to version 1.0.0.933. (BZ#484824) • The e1000e driver for Intel PRO/1000 ethernet devices has been updated to the upstream version (BZ#480241) 1.0.2-k2.
- Page 17 Driver Updates • The aacraid driver has now been updated to version 1.1.5-2461. This update applies several upstream fixes for bugs affecting queued scans, controller boot problems, and other issues. (BZ#475559 • The aic7xxx driver now features an increased maximum I/O size. This allows supported devices (such as SCSI tape devices) to perform writes with larger buffers.
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Page 18: Technology Previews
The following Technology Previews are new or enhanced in Red Hat Enterprise Linux 5.4. For detailed information on the Technology Previews in Red Hat Enterprise Linux 5.4, refer to the Technology http://www.redhat.com/docs/manuals/ Previews section of the 5.4 Technical Notes located at enterprise/ Section 8.3.3, “Network Driver... - Page 19 • The xorg-x11-qxl-drv X11 video driver for the qemu QXL video accelerator has been added to (BZ#489806) 5.4 as a Technology Preview. A. Revision History Revision 1.0 Wed Sep 02 2009 Ryan Lerch rlerch@redhat.com Initial version of the online version of the Red Hat Enterprise Linux 5.4 Release Notes...