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Red Hat Enterprise Linux Update
IBM z Systems and Power Systems
Filipe Miranda <fmiranda@redhat.com>
Global Lead for Red Hat Products on IBM z Systems and Power Systems
Red Hat, Inc.

Topics for this session
* Red Hat Client Data, 2014
© Copyright Red Hat Inc 2015
Red Hat in a Nutshell
Red Hat Enterprise Linux for z Systems
Red Hat Enterprise Linux for Power Systems
Red Hat EnterpriseVirtualization for Power Systems

Red Hat in a Nutshell
* Red Hat Client Data, 2014
8

Growing Market for Red Hat

Red Hat Open Source Development Model

Red Hat Enterprise Linux Lifecycle

Red Hat Extended Update Support
6.5 (ends November 30, 2015)
6.6 (ends October 31, 2016)
7.1 (ends March 31, 2017)
In Red Hat Enterprise Linux 7, EUS is available for the following releases:
In Red Hat Enterprise Linux 6, EUS is available for the following minor releases:
https://access.redhat.com/articles/rhel-eus
Extended Update Support (EUS) is an optional offering for Red Hat Enterprise Linux subscribers.With EUS, Red Hat
commits to providing backports of Critical-impact security updates and urgent-priority bug ﬁxes for minor releases
of Red Hat Enterprise Linux, even for systems that are still using minor releases behind the current one.

Red Hat Enterprise Linux on z Systems

Red Hat and IBM z Systems
z Systems
Red Hat Enterprise Linux optimized to z Systems (I)
(II) https://access.redhat.com/site/articles/111663
JBoss EAP adding Value to your solution (II)
Take advantage of the IBM JDK on Red Hat Enterprise Linux for IBM z Systems
(1) http://www-03.ibm.com/systems/z/os/
linux/resources/testedplatforms.html

Red Hat Enterprise Linux for IBM z Systems
Photo Michael Storze
https://access.redhat.com/ecosystem/search/#/category/Server

Red Hat Enterprise Linux 7.1
Additional Linux container support
Linux containers have emerged as a key open source application packaging and delivery technology, combining lightweight
application isolation with the flexibility of image-based deployment methods. Developers have rapidly embraced Linux containers
because they simplify and accelerate application deployment, and many Platform-as-a-Service (PaaS) platforms are built around
Linux container technology, including OpenShift by Red Hat. Red Hat Enterprise Linux 7 implements Linux containers using core
technologies such as control groups (cGroups) for resource management, namespaces for process isolation, and SELinux for
security, enabling secure multi-tenancy and reducing the potential for security exploits.
DOCKER
This page is the 'homepage' of the Linux on z Systems Docker binaries.
Introduction
Docker is a tool for deploying, executing and managing containers.
Experimental Linux on z Systems binaries are provided for Red Hat Enterprise LinuxVersion 7
http://www.ibm.com/developerworks/linux/linux390/docker.html

RHEL on z Systems InstallationTips

RHEL on z installation process summary
These files can be found at the images directory from the RHEL7.x installation tree
kernel.img
initrd.img
redhat.exec
generic.prm
Highly recommended to edit the PRM file locally in your desktop and then copy it to the
z/VM Virtual Machine.
This is how the stock generic.prm file looks like:
ro ramdisk_size=40000 cio_ignore=all,!condev
Example of modified generic.prm (consult your system’s admin):
ro ramdisk_size=40000 cio_ignore=all,!condev
ip=10.16.10.71::10.16.111.254:21:serv1.redhat.com:enccw0.0.0600:none
rd.znet=qeth,0.0.0600,0.0.0601,0.0.0602,layer2=1
nameserver=10.16.46.244 nameserver=10.16.36.30
rd.dasd=0.0.0100
inst.repo=http://RHEL7.1/s390x/os
Example of what if I use FCP instead of ECKD/EDEV dasd ?
rd.zfcp=0.0.fc00,0x500507630500c74c,0x4010401800000000

To copy ﬁles over to z/VM, open a Linux terminal on your desktop:
# ftp <FQDN for the z/VM>
login <login>
password <password>
Example:
site fix 80
bin
put kernel.img KERNEL.IMG
put initrd.img INITRD.IMG
ascii
put redhat.exec REDHAT.EXEC
put generic.prm GENERIC.PRM

1 2
3
4

5
6
7

RHEL on z Systems technical
features summary

- Production Ready -
z Systems
z Systems
z Systems
z Systems
Summary of Specific features for z Systems

Automated LUN scan
Unblock the devices
# cio_ignore -r fc00 
# cio_ignore -r fd00
Enable the devices
# chccwdev -e fc00
# chccwdev -e fd00
LUN already detected on all paths
# lsluns
Scanning for LUNs on adapter 0.0.fc00
at port 0x500507630500c74c:
0x4010401700000000
at port 0x50050763050bc74c:
0x4010401700000000
Scanning for LUNs on adapter 0.0.fd00
at port 0x500507630510c74c:
0x4010401700000000
at port 0x50050763051bc74c:
0x4010401700000000
Enable multipath:
# cp /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf /etc/multipath.conf
# systemctl start multipathd
# systemctl enable multipathd
# multipath -ll
mpatha (36005076305ffc74c0000000000001017) dm-2 IBM
size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=1 status=active
|- 0:0:0:1075265552 sda 8:0 active ready running
|- 0:0:1:1075265552 sdb 8:16 active ready running
|- 1:0:0:1075265552 sdc 8:32 active ready running
`- 1:0:1:1075265552 sdd 8:48 active ready running
Make the FCP devices persistent:
# lszfcp -D | awk '{ print $1 }' | sed -e 's/// /g' >> /etc/zfcp.conf
Partition the multipath device:
# parted -s /dev/mapper/mpatha mklabel msdos mkpart primary 0% 100%
Example on how simple it is to work with FCP devices

Driver tolerance for Crypto Express 5S

z Systems
z Systems
z Systems
z Systems

http://www.ibm.com/developerworks/linux/linux390/documentation_red_hat.html#rhel7 http://www.redbooks.ibm.com
Draft Document for Review May 6, 2015 7:19 am SG24-8147-01
Redbooks
Front cover
The Virtualization Cookbook
for Linux on IBM z Systems
Lydia Parziale
Berthold Gunreben
Filipe Miranda
Paul W Novak
Ken Werner
Additional documentation for z Systems

Red Hat Enterprise Linux for Power Systems

Red Hat and IBM Power Systems
z Systems
Red Hat Enterprise Linux optimized to Power Systems
(I) https://access.redhat.com/site/articles/111663
JBoss EAP adding Value to your solution
Take advantage of the IBM JDK on Red Hat Enterprise Linux for IBM Power Systems (I)

Red Hat Enterprise Linux 7.1
Red Hat Enterprise Linux 7.1 Annoucement
"The enhancements to the world’s leading enterprise Linux platform offered by Red Hat Enterprise Linux 7.1,
as well as the new offerings based on the update, deliver a ﬂexible, reliable, secure and performant platform
that works across nearly every industry use case, from container adoption and rapid application
development to time-sensitive trading applications and systems based on IBM Power Systems architecture.
JIM TOTTONVICE PRESIDENT AND GENERAL MANAGER, PLATFORMS BUSINESS UNIT, RED HAT

POWER8 Systems
Target
Also Available

Endianess
The terms endian and endianness refer to the convention used to interpret the data when are
stored in the computer's memory.
In computing, memory commonly stores binary data by organizing it into 8-bit units called bytes.
When reading or writing data, into memory, consisting of multiple bits, the order of the bytes
stored in memory determines the interpretation of the data.
What is endian and endianness?

Each byte of data in memory has its own address.
Big-endian systems store the most significant byte in the smallest address and the least
significant byte is stored in the largest address
Endianess
Little-endian systems, in contrast, store the least significant byte in the smallest address.

Both forms of endianness are in widespread use in computing and networking.
As examples, the Intel x86 processor represents a common little-endian architecture, IBM z
Systems and IBM Power Systems all big-endian; starting with IBM POWER8, IBM Power
Systems now offers a hybrid architecture, both little-endian and big-endian.
Endianness is important as a low-level attribute of a particular data format.
Failure to account for varying endianness across architectures when writing software code
for mixed platforms and when exchanging certain types of data might lead to failures and
data corruption.
Endianess
Why is the endianness important ?

Red Hat Enterprise Linux 7.1 offers both options little endian and big endian versions.
Running little endian mode accelerates business application innovation by eliminating a significant
and outdated barrier to application portability and allowing customers with the latest IBM Power
Systems to leverage the significant existing ecosystem of Linux applications previously developed
and restricted to x86 architectures.
Red Hat Enterprise Linux 7.1 little endian enables simple data migration, simplifies data sharing
(interoperability) with Linux on x86, and improves I/O options with modern I/O adapters and
devices, e.g. GPUs.
Red Hat Enterprise Linux 7.1 for Power
Why Red Hat Enterprise Linux on Power Systems ?

Red HatVirtualization for Power

RHEV for Power
Virtualization Strategy
IBM PowerVM
What about IBM PowerKVM ?
https://access.redhat.com/certified-hypervisors

RHEV for Power
• Coexist with RHEV environments for x86: Simply add Power Systems with Linux guests
to the current x86 environment and take advantage of a single graphical console to
manage both distributed systems and Power Systems.
• Open SourceTechnology: Using RHEV for Power will allow customers to beneﬁt from
the KVM virtualization technology without having to learn another hypervisor (IBM
PowerVM) when managing Linux guests.
• Readily available staff with KVM knowledge versus PowerVM
• By using RHEV for Power, or simply RHEV - you can integrate your environment with
other products from Red Hat, such as Cloudforms, to manage Linux cloud environments.
What are the advantages of RHEV for Power?

RHEV Manager

Filipe Miranda <fmiranda@redhat.com>
Global Lead for Red Hat Products on IBM z Systems and Power Systems
Red Hat Inc.

© Copyright IBM Corporation 2015
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