Red Hat Enterprise Linux 5.1 (kernel-2.6.18-53.el5) including:
- Red Hat Enterprise Linux 5 Advanced Platform for x86,
AMD64/Intel(r) 64, Itanium Processor Family, S/390, System p
and System z
- Red Hat Enterprise Linux 5 Server for x86, AMD64/Intel(r) 64,
Itanium Processor Family, S/390, System p and System z
- Red Hat Enterprise Linux 5 Desktop for x86 and AMD64/Intel(r)
This update includes the following enhancements:
- Completion of virtualization support on Itanium2 platforms
+ PV (paravirtualized) and FV (fully virtualized) Itanium2
guests are now fully supported on Itanium2 hardware
(full virtualization requires hardware assist)
- Improved support for FV guests
+ Live-migration support for FV guests
+ General performance improvements
+ Host infrastructure for PV drivers (the actual drivers
will be delivered separately in the context of the
individual supported guest operating systems)
- Update of the libvirt management layer
- New Xen 3.1.0 hypervisor (and updates to libvirt and
userspace to work against hypervisor ABI)
- AMDV support for domain migration and save/restore
- Added Kexec/Kdump support for the host in a virtualized
New kernel features includes:
- Improved ACPI power management support including support
for S3 suspend to RAM and S4 hibernate
- Support for installation to and boot from dm-multipath
- Updated SATA subsystem
- Ext3 filesystem now fully supports filesystem sizes of up
- Updated CIFS to version 1.48aRH
- IPMI and HPI updates
- Updated Infiniband support to OFED1.2 version including
RDMA over Ethernet
- Expanded in-kernel socket API
- IPv6 improvements
- Added support for shared page table for hugetlb pages
Hardware support enhancements:
- Driver updates include:
3w-9xxx, aacraid, aic79xx, aic94xx, alsa, arcmsr, b44,
bnx2, cciss, chelsio, e1000, ipmi, ipw2100, ipw2200, ixgb,
lpfc, megaraid, megaraid_sas, mpt-fusion, pci, powernow-k8,
qla2xxx, qla3xxx, qla4xxx, s2io, sky2, spidernet, stex, tg3
- Drivers added:
e1000e, forcedeth, netxen_nic, xinput
Other notable additions:
- Improved auditing
- Smartcard support for SSH
- Integration of LSPP certification related changes
- Samba update for improved interoperability
- PAM/Kerberos and NSS-LDAP updates for improved integration
in Active Directory environments
- Improvements to the "crash"-analysis tool
- Added replication and migration support for NFSv4 referrals
- Improved support for autofs load balancing with replicated
Technology Preview features are included in Red Hat
Enterprise Linux to provide the features with wide exposure.
Customers may find these features useful in a non-production
environment. Customers are free to provide feedback and
functionality suggestions for a Technology Preview feature
before it becomes fully supported in a future release.
Technology Preview features are currently not supported under
Red Hat Enterprise Linux 5.1 subscription services, may not be
functionally complete, and are not supported for production
Erratas will be provided for high-severity security issues in
Technology Preview features. Red Hat intends to fully support
Technology Preview features in a future release. See the Red
Hat Enterprise Linux 5.1 Release Notes for more information
about these Technology Previews:
- Support for 32-bit PV guests on 64-bit AMD64/Intel(r) 64 hosts
- Significant stability improvements to the GFS2 file system
- Stateless Linux
- AIGLX including X server and updated Mesa package
- New devicescape (d80211) stack enabling ipw 4965 wireless
- FS-Cache file system
- iSCSI target device (iSCSI server)
- Firewire stack
Accessing the Software
Red Hat Enterprise Linux 5.1 is available to existing
Red Hat Enterprise Linux subscribers via RHN. The channels
will automatically appear in your account. Installable
binary and source ISO images are available via Red Hat Network
You will be required to log in using a valid RHN account with
Errata Advisories describing changes in RHEL5 are available
Red Hat Enterprise Linux 5.1 users who have assigned Technical
Account Managers (TAMs) and/or Technical Partner Managers
should report all bugs with this release using your current
Issue Tracker account.
All other users should report bugs using Red Hat's Bugzilla.
To report and query for bugs in this release, you need a
Bugzilla account with access to the "Red Hat Enterprise Linux"
To report a bug via Bugzilla:
1. Login to the Bugzilla home page at http://bugzilla.redhat.com.
If you don't have an existing account, simply create one by
going to this page:
2. On the Bugzilla home page, choose the "New" tab. Proceed to
Step 3, "Choosing Your Product" by clicking that button at the
bottom of the page.
3. Choose Product "Red Hat Enterprise Linux".
4. Choose Version "5.1".
5. Choose the component against which you wish to report a problem,
such as kernel, glibc, etc. If you do not know the component or
want to file a bug against the general product, choose
"distribution" as the component.
6. Choose the platform, such as: "All", "x86_64", etc.
7. Provide the information about the problem you're reporting by
entering information in the appropriate fields. In the Summary
field, provide a clear and descriptive abstract of the issue. In
the Description field, provide the full package versions of any
components you are experiencing problems with (as packages may be
8. Check to make sure that all information is accurate and click the
"Commit" button to submit your problem report.
Release notes for this release are available on the Red Hat
documentation site at:
Red Hat has public mailing lists for communication during all
future Red Hat Enterprise Linux 5 programs.
A low-volume, moderated, announcement-only mailing list.
Red Hat will use this list to communicate one-way information
about RHEL 5 programs, such as notifications when updates are
available or solicitations for feedback.
A public general discussion mailing list for users of
Red Hat Enterprise Linux 5 updates. Subscribe at:
Enjoy the Red Hat Enterprise Linux 5.1 release.
The Red Hat Enterprise Linux Team