Transcript FUDCon-SystemZ.odp - SharkCZ @ Fedora People

IBM System Z
Phil Knirsch
Engineer & Team Lead
Overview
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History of System Z
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Linux on System Z
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Red Hat/Fedora & System Z
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How to use it today
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Hands on with hercules
History of System Z
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It began in 1964 with S/360
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Same architecture for different models
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Upgrade path, no software rewrites
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Backward compatibility in later models
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Introduced:
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8-bit bytes, 32-bit words
Byte addressable memory
Two's complement arithmetic
Microcoded CPUs
History of System Z
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Architecture overview
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16 32-bit general purpose registers
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24-bit address space
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Channel I/O via specialized processors
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Extendable instruction set via microcode
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Separation of system and user space
History of System Z
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Operating systems
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BOS/360
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TOS/360
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DOS/360 (ancestor of z/VSE)
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OS/360 MVT
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CP-67/CMS (ancestor of VM/370 and
z/VM)
History of System Z
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1970: S/370
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31-bit address space
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Virtual memory
1990: S/390
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Parallel Sysplex
History of System Z
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2000: zSeries (z900)
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64-bit real and virtual address space
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Up to 32 CPUs per rack
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Couple up to 32 racks via Sysplex
2005: System z9
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Hardware Management Console (HMC)
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Program Directed Re-IPL (reboot ;)
2008: System z10
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Quad Core 4.4 GHz CPUs
Linux on System Z
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1998/1999
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First patches in the Linux kernel 2.2.13
2000
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IFL annoucement of IBM
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Toolchain complete and usable
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Think Blue Linux 1 port
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Based on Red Hat Linux 6.1
Linux on System Z
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Other distros followed quickly in 2000
and 2001
Currently available on
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Red Hat Enterprise Linux 3, 4 and 5
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CentOS
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Novell SuSE
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Debian
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Gentoo
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Slackware
Red Hat/Fedora & System Z
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First offical Red Hat port
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Red Hat Linux 7.1/7.2 in 2000/2001
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Released Red Hat Advanced Server 2.1
Continued to build and support
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Up to RHEL-5
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Builds up to Fedora 7
Dropped it for Fedora 8 because of
switch to external buildsystem
Red Hat/Fedora & System Z
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Technical challenges:
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s390x is 64bit big endian
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Completely different boot process
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Virtual hardware
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New devices and partition layout
Excellent cooperation with IBM
System Z Linux team
IBM participates in Open Source with
System Z
How to use it today
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Using hercules emulator
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Very easy to set up and use
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Speed is adequate (80 MIPS)
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Emulates most important hardware
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Can run and install various distros:
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“Feels” like the real thing
CentOS 4
Debian
SuSE
Use ready-to-go image of Fedora 7
How to use it today
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Working on installable Fedora 9
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Plan to get it back into koji for F11
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Work necessary on anaconda and
image generation
Bootstrapped “evil builds” already
bootable and running
Hands on with hercules
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Hand over to Dan Horak :)