IBM s/390 manual Linux, Positioning with other small S/390s

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1.2.2 Linux

In order to provide well-tested S/390 operation, a single Linux distribution was chosen as the ThinkPad base software. This is Red Hat 7.1 Linux. Other versions and distributions of Linux might work, but only ThinkPad/EFS machines running on this base operating system are supported at the time of writing.

This may change in the future, of course. Linux is an ongoing process and the EFS base system is likely to migrate to a future Linux kernel when one becomes available and FSI migrates the FLEX-ES code to it. FSI and IBM intend to manage EFS development with a high priority for system stability. In general, this means the EFS base operating system will not “chase” small Linux enhancements and may delay movement to major new releases until their stability for the EFS environment has been thoroughly confirmed.

Linux is a large topic. This redbook addresses Linux only to the extent needed to install and use FLEX-ES. There are many clever things that can be done with Linux, and some of these can interact with FLEX-ES and files used with FLEX-ES. Except as needed to install a basic ThinkPad/EFS system, we do not explore the things a user might implement using Linux facilities.

1.2.3 Positioning with other small S/390s

Recent entry-level S/390 machines used by PID members have included the following:

￿P/390, R/390, and S/390 Integrated Server (IS) systems (all based on P/390 adapters). These systems are no longer manufactured or marketed, but are still widely used by members of IBM’s Partners in Development (PID) organization.

￿Application StarterPak systems. These are no longer manufactured or marketed, but a number are in use by PID members.

￿Several models of Multiprise 3000 systems (MP3000). These are currently manufactured and marketed and widely used.

￿x/Server EFS (formerly known as NUMA-Q Enabled for S/390). These are no longer marketed for EFS solutions.

￿Various models of Multiprise 2000 systems. These are no longer actively marketed.

The following table offers a few initial comparisons:

 

S/390

Rel

Typical

Internal

Typical

S/390

Significant

 

CPUs

CPU

S/390

Disk

Internal

Chans

Features

 

 

Perf

Storage

Perform

Disk

 

 

 

 

 

in MB

 

Capacity

 

 

 

 

 

 

 

 

 

 

ThinkPad/EFS

< 1

1.4

256

Good

32 GB +

None

Very portable!

 

 

 

 

 

 

 

 

Netfinity/EFS

1

1.8

512+

Very Good

160 GB

Limited

Multiple S/390 instances

(small)

 

 

 

to Excellent

 

 

portable

 

 

 

 

 

 

 

 

xSeries EFS

3

5

512-2048

Excellent

200 GB+

Limited

Multiple S/390 instances

 

 

 

 

 

 

 

significant non-S/390

 

 

 

 

 

 

 

workloads possible

 

 

 

 

 

 

 

 

P/390

1

1

256 fixed

Limited

18-36 GB

Limited

Portable (except IS)

R/390

 

 

 

 

 

 

 

Int. Serv.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MP3000-P30

1

8

1024

Very good

72 GB

Excellent

LPARs

 

 

 

fixed

 

 

 

Crypto hardware

 

 

 

 

 

 

 

ICMF

 

 

 

 

 

 

 

 

4S/390 PID: ThinkPad Enabled for S/390

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Contents ThinkPad Enabled for S/390 Bill OgdenPage International Technical Support Organization First Edition October Contents Shutting down Index Vi S/390 PID ThinkPad Enabled for S/390 Special notice AuthorIBM trademarks Comments welcomeIntroduction Purpose of this redbook ThinkPad/EFS systemsFLEX-ES Linux Positioning with other small S/390sThinkPad/EFS hardware used Terminology System and Linux installation Disk planningDifferences Partition Manually Partition Linux installationThinkPad Mount Point Device Requested Actual Type Purpose255.255.255.0 Device Partition Type Default Boot12.17.210 12.17.150Gnome Select Start X automatically Installation notesMonitor Setup IBM 9513 T55A TFT No clock chip 24 bit # df -h# kill -s USR1 pidnumber PID number for xinetd Etc/xinetd.d # vi telnet# ps -ef grep xinetd 14 S/390 PID ThinkPad Enabled for S/390 FLEX-ES and OS/390 installation FLEX-ES Brief introductionPC Processor in ThinkPad Page Installation Installing the FLEX-ES license key AD systems OS/390 AD systemsNext steps # mkdir /s3912 OS/390 on CD-ROM Basic CD-ROM formats3 OS/390 device configuration FLEX-ES formatsAn unzip program Installation tasksUnzipping and installing Awsckd CD-ROM files Mount /dev/cdrom /mnt/cdromMinor problems File ownershipVolume in two separate zip files Files unzip in wrong orderFLEX-ES Operation FLEX-ES system and resource definitions Comments# resadm -s R10A.rescf Building a shell script$ cd /usr/flexes/rundir $ resadm -r$ sh shos Flexes ipl a80 0a82cs =stor IPL OS/390Terminal Solicitor 11.42.47 Operation and useUser terminal connection A80,8System performance monitors Linux TN3270Iodf requirements Rmf5 TCP/IP for OS/390 # resadm -k Shutting down# resadm -T # exit36 S/390 PID ThinkPad Enabled for S/390 Additional Topics Basic debugging Server memory Operating Systems Messages consoleSecurity Vmstat command Importance of Linux swapping CPU# cat /proc/partitions Using a second Linux hard diskUltrabay Second disk planning Device Volser Addr Use Disk layout AD systemPartition Mount Size Use FLEX-ES FakeTape on OS/390 Alternative method560 222222Multi-system setup $ x3270 -model 3 -keymap pc -port tn3270 localhostt91f X3270 client$ x3270 -model 3 -keymap pc -port tn3270 localhost Function Keys Used# vi # cd /usr/lib/X11/app-defaults # cp X3270 X3270oldRemote resources Disk caches System BWrites Cache Hits Tuning cachesize FSI Channel AdaptersDisk fragmentation Backup and restore considerationsScsi adapter for the ThinkPad Using tar to back up S/390 volumes $ tar -cvzf /holding/OS39RA.tarz /s390/OS39RAUsing tar and ftp $ cd /usr/flexes/rundir $ sh buOS39RAc16 S/390 identification CD-RW driveDisplay PSW and registers RAS discussionVerify ckd disk Linux windowsInstalling FLEX-ES upgrades ThinkPad power controlUseful Linux commands Common commandsMultiple consoles, sessions, screens Text editors62 S/390 PID ThinkPad Enabled for S/390 Frequently asked questions 64 S/390 PID ThinkPad Enabled for S/390 Frequently asked questions 66 S/390 PID ThinkPad Enabled for S/390 Frequently asked questions 68 S/390 PID ThinkPad Enabled for S/390 Appendix A. FLEX-ES definition listings Basic definitions for a single HDDShell script for a single HDD Definitions for two HDDs Shell script for two HDDs Appendix B. FLEX-ES parameters System definitionsCpu0 Cpu1 Cpu2 Resource definitions Emulated control unit typesEmulated device types Typical resource definitionsCKD disk resources Terminal resources Tape resources LAN resourcesCloned devices Resadm command Common rulesCLI commands 560 Home/tape3 Flexes mount A90 S390/WORK01710 Altcons 84 S/390 PID ThinkPad Enabled for S/390 Special notices 86 S/390 PID ThinkPad Enabled for S/390 Referenced Web sites How to get IBM RedbooksIBM Redbooks Other resourcesIBM Redbooks collections Index Pipe Port Power control Terminal logo Terminal Solicitor 16, 18, 31, 39, 65 92 S/390 PID ThinkPad Enabled for S/390 Partners in Development ThinkPad Enabled for S/390 Page Page ThinkPad Enabled for S/390 System setup AD CD-ROM use System operation
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