RHEL 5.3キタコレ
いいタイミングなのか悪いタイミングなのか!?(何
Enhancements
------------
A technical overview that describes the major enhancements
can be found at:
http://www.redhat.com/rhel/server/resource_center/
The following list summarizes numerous improvements to this
release:
* Virtualization Enhancements
+ Support for up to 126 CPUs in the x86_64 Xen-based
Hypervisor (up to 32 CPUs per virtual server)
+ Support for up to 1TB memory per host on x86_64
(up to 80GB per virtual server)
+ Increased number of dynamic IRQs for x86_64 to allow for
more guests on large systems
+ Support for more than 16 disk devices per guest
+ Added Virtio drivers for use of Red Hat Enterprise Linux 5
as a guest on KVM-based hypervisors
+ Automatically determine correct parameters for large memory
machines. The domain 0 is automatically restricted to 32GB,
but the hypervisor sees the full amount of memory in the
machine
+ Support for Intel Extended Page Tables (EPT) which delivers
higher performance in Fully Virtualized environments
+ Support for 2MB backing page tables on x86_64
+ Support for more than 4 NICs per guest
+ Blktap statistics added
+ Fixes made to properly reserve kdump memory for Xen and
to provide crash with needed address
+ Fixed timer problems after migration
+ Added Intel VT-i2 support for new ia64 processor
+ Fixed lengthy network outage after live migrations
+ Xen log file rotation
+ Xenstore database moved to tmpfs
+ Xen paravirtualized drivers included for fully-virtualized
(FV) Red Hat Enterprise Linux 5 guest kernels. Thus the
xenpv-kmod package no longer needs to be added to Red Hat
Enterprise Linux 5 FV kernels for paravirtualized (Xen)
disk and network support
+ Support for vmcoreinfo for IA64 Xen
* Cluster Improvements
+ Cluster mirror support (2-leg mirrors only)
+ GFS2 parallel cluster file system is supported (previously
a Technology Preview)
+ Fencing improvements:
- Added SSH support to the DRAC, Blade Center, iLO, and
Egenera fencing agents
- Added support for WTI RSM8R4 and WTI MPC-8H power
controllers to the WTI fencing agent
* Desktop Enhancements
+ NetworkManager 0.7
- Mobile broadband for select hardware
- Static IP support
- Networking before login
- Much faster connection times
- Connection sharing/multiple active connections
+ Laptop support
- Backported keyboard quirks
+ Updated graphics drivers
- ATI Radeon r400, r500, and r600 chipsets are fully
supported for mode setting (previously a Technology
Preview)
- ATI Radeon r400 and r500 now support 2D acceleration
(previously a Technology Preview)
- Intel G4x/GM4x (Cantiga and EagleLake) support mode
setting and 2D acceleration
- Intel GMA950, 2D only
- Expanded Matrox G200 coverage
* System Services Enhancements
+ Rebased cups (print server), now with full Kerberos support
+ Rebased ksh, lm-sensors, net-snmp, OpenIPMI, openldap,
openmotif, python-urlgrabber, rpm, tog-pegasus, vnc, yum,
yum-utils
* Developer Platform
+ OpenJDK
- First fully open and compatible JDK included in RHEL
- Based on OpenJDK (http://openjdk.java.net/) and the
IcedTea GNU/Linux project (http://icedtea.classpath.org/)
- Tested against the Java SE 1.6 Technical Compatibility
Kit with zero failures
- java-1.6.0-openjdk is only available for the x86 and
x86_64 architectures
* Tool Enhancements
+ SystemTap
- Initial implementation of user space tracing (user static
markers and stack unwinding coming soon)
- Remote script compiling (secure version coming soon)
- New Beginner's Guide
- Improved tapset organization and documentation
+ GDB Debugger
- Rebased, now based on version 6.8 (previously based on
version 6.5)
- Multiple location breakpoints for C++ templates,
constructors, inlined functions, etc.
* Encryption Enhancements
+ Root and swap encryption support in the installer
- Hibernate / resume support with encrypted disks
* Installer Enhancements
+ 802.1q VLAN tagging support for kickstart
+ iSCSI installation and boot support
+ PCMCIA CompactFlash devices
+ dmraid RAID0, RAID1, and RAID5 support
+ Ability to install Xen and KVM guests
+ Automatic recognition of correctly-labeled driver update
devices
+ Installation via DVD using SCSI on System z
+ Ability to identify physical NIC by flashing LEDs
+ 10Gbps Ethernet driver support through niu driver
+ Cisco 10G Ethernet support through enic driver
+ Cisco FCoE HBA support through fnic driver
+ Updated DHCPv6 (Client, Server and Relay Agent) support for
RFC3315, RFC3646 and RFC3736
+ Emulex FCoE HBA support through lpfc driver
+ QLogic FCoE HBA support through qla2xxx driver
* Security Enhancements
+ Authentication and Identity
- pkinit clients can now be configured to use keys for
client certificates which may not contain
Kerberos-specific extensions
- pkinit interoperability fixes
- krb5 now applies the correct file context to database
lock files
- krb5 servers no longer log everything twice by default
- nss_ldap now configured with support for paged results
extension
+ SELinux enablement of new NetworkManager and audit
functionality
+ Improved Audit and Logging
- TTY input audit support
* Windows Interoperability
+ Rebased samba from 3.0.28 to 3.0.32 which supports Windows
Vista and 2008 and various fixes for DC functionality
(interoperability with Citrix and Domain trusts)
* Kernel Improvements
+ New features include:
- Added private futexes support
- Added preempt-notifiers implementation
- Included tracepoint/markers infrastructure
- Added response oriented wake up behavior to scheduler
- Fixed gettimeofday for HPET, PMTimer, TSC
- Updated NMI infrastructure to latest
- Enabled deep C-states for idle efficiency for Intel
Tylersburg chipset
- Added extend MCE banks support for Intel Dunnington,
Nehalem processors
- Added ACPI T-state support (processor throttling control)
- Added AMD IOMMU driver support
- Enhanced Partition Statistics
- Enabled CIFS' DFS support and update CIFS to latest
- Updated autofs4 to the latest
- Increased stack size for ia32 application
- Added kprobe-booster and return probe-booster support
- Added PCI domain support
- Added RAID 4/5/10 in dmraid
+ Hardware support enhancements:
- Drivers added:
ath5k, enic, fnic, hp-ilo, inet_lro, iwl5000, neic,
niu, r8169, rt2x00, rtl818x, uvcvideo, virtio
- Drivers updated:
3w-9xxx, 3w-xxxx, aacraid, aic94xx, alsa, arcmsr,
bcm43xx, bnx2, bnx2x, cciss, chelsio, cpufreq, cxgb3,
e1000, e1000e, fusion, hpilo, ibmvscsi, igb, ieee80211,
ipw2x00, iwl4965, iwlwifi, ixgbe, lpfc, mac80211,
megaraid_sas, mptscsi, myri10ge, netxen-nic, OpenIB,
powernow_k8, qla2xxx, qla3xxx, qla4xxx, qla84xx, sata,
sata_svw, tg3, zd1211rw
Technology Previews
-------------------
Technology Preview features are included in Red Hat Enterprise
Linux to provide the features with wide exposure with the goal
of supporting these features in a future release of Red Hat
Enterprise Linux. Technology Preview features are not supported
under Red Hat Enterprise Linux 5.3 subscription services and may
not be functionally complete. Red Hat welcomes customer
feedback and suggestions for Technology Previews. Advisories
will be provided for high-severity security issues in Technology
Preview features.
The following Technology Preview features are new or enhanced in
Red Hat Enterprise Linux 5.3. See the Red Hat Enterprise Linux
5.3 Release Notes for more information.
- AIGLX including X server and updated Mesa package
- Compiz composition manager
- dm-multipath install
- Dogtail gui
- Limited eCryptfs support
+ Added eCryptfs support to kernel
+ Added authentication in crypto library to kernel
- ext4 file system / e4fsprogs
- Firewire
- FreeIPMI Intelligent Platform Management System
- GCC 4.3
+ Compiler based on gcc 4.3
+ OpenMP 3.0 conformance
- Indic languages: Assamese, Kannada, Sinhalese, Telugu
- Kerberos security for CIFS
- Kernel DFS support for CIFS
- ktune: a service that sets several kernel tuning parameters
to values suitable for specific system profiles
- Remote audit logging via unencrypted connection
- Software FCoE on standard NICs
- Support for 32-bit paravirtualized (PV) guests on
64-bit AMD64/Intel(r) 64 hosts
- SystemTap utrace support for user space tracing
- Trusted Computing Group (TCG) / Trusted Platform Module
(TPM) Support
+ Included the TCG stack
+ Included the Trousers TSS stack
+ Added trust computing/trust platform module in kernel and
tpm-tools
+ boot-loader support will be considered for inclusion in a
future release
- VMware ESX cluster fencing agent
GPL Version 3 Licensed Components
---------------------------------
The following packages in Red Hat Enterprise Linux 5.3 are
licensed under GNU General Public License Version 3 (GPLv3):
* gcc43-4.3.2-7.el5
* gcc43-c++-4.3.2-7.el5
* gcc43-gfortran-4.3.2-7.el5
* gdb-6.8-23.el5
Anaconda Upgrades
-----------------
While anaconda's "upgrade" option will perform an upgrade from
Red Hat Enterprise Linux 4.7 or 5.2 to Red Hat Enterprise Linux
5.3, there is no guarantee that the upgrade will preserve all
of a system's settings, services, and custom configurations.
For this reason, Red Hat recommends that you perform a fresh
installation rather than an upgrade.
Prior to Red Hat Enterprise Linux 5.3, the kernel modules
providing support for GFS2 were delivered separately. As of
this release, the GFS2 kernel modules are now delivered integral
to the kernel RPM. Due to Bug 465883, systems which had RPMs
providing the GFS2 kernel modules installed will incorrectly
load the older modules after updating to the Red Hat Enterprise
Linux 5.3 kernel. To ensure correct operation of GFS2, manually
remove the previous GFS2 Technology Preview kernel module RPMs
prior to installing the new kernel. For example, on i386:
# rpm -e kmod-gfs2.i686 kmod-gfs2-PAE.i686 kmod-gfs2-xen.i686
Enjoy the Red Hat Enterprise Linux 5.3 release.
Sincerely,
The Red Hat Enterprise Linux Team