IBM s/390 manual Cloned devices

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The cu type 3172 is a defined FLEX-ES keyword and defines an LCS-type LAN connection to S/390. (On the S/390 side, there would normally be two CTC addresses (even/odd addresses) defined. A LAN device for use by OS/390 TCP/IP must be specified exactly as shown (except that the device name of the interface might be different). That is, it will be defined as two devices (00 and 01), with the second device OFFLINE. The IP address for this interface would be specified in the OS/390 TCP/IP profile.

The device designation in this example, eth0, may appear strange to experienced UNIX users, who will want to write something like /dev/eth0. However, eth0 worked on our ThinkPad/EFS; furthermore, Linux does not appear to define names like /dev/eth0 or /dev/net0.

An additional parameter may be required for a LAN definition. A “real” 3172 unit may have up to four adapters. These are numbered 0-3, and this number appears in the OS/390 TCP/IP or VTAM specifications.5 By default, FLEX-ES uses number zero. If you want a different number, you must include an options statement:

R10A3088: cu 3172

options ‘adapternumber=1’ interface local(1) device(00) 3172 eth0 device(01) 3172 OFFLINE

end R10A3088

This emulates the “real” 3172 adapter number 1. This is not related to the actual LAN adapter number in your ThinkPad. The actual Netfinity LAN adapter that is used is specified by the device parameter.

You can share a LAN adapter between Linux and OS/390 TCP/IPs. In order to do this, you need to specify the IP address to be used by OS/390, as a parameter in the resource definition. (You should specify the same address in your OS/390 TCP/IP parameters.) For example,

R10A3088: cu 3172

options ‘ipaddress=9.12.17.211’ interface local(1) device(00) 3172 eth0 device(01) 3172 OFFLINE

end R10A3088

Using this example, the single Ethernet adapter in our ThinkPad/EFS machine appears as IP address 9.12.17.210 (defined when we installed Linux) and 9.12.17.211 (when we start FLEX-ES).

Cloned devices

The FLEX-ES documentation includes an optional cloned parameter for many resources definitions. We did not use this parameter. This parameter applies to a limited set of devices—emulated printers and card readers are good examples—for which the resources definitions can be automatically replicated to serve multiple S/390 instances. This is meaningful only when multiple S/390 instances are used. It potentially saves a little time when creating resources definitions. We suggest it may be better to take the extra time to directly create all the resources definitions you need and ignore the cloned parameter.

5The same situation exists with a P/390 or MP3000 emulated I/O LAN adapter. It is known as the MPTS number in these cases.

80S/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 -hEtc/xinetd.d # vi telnet # ps -ef grep xinetd# kill -s USR1 pidnumber PID number for 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 IPL OS/390 Terminal Solicitor=stor 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 Operating Systems Messages console SecurityServer memory Vmstat command Importance of Linux swapping CPUUsing a second Linux hard disk Ultrabay# cat /proc/partitions Second disk planning Disk layout AD system Partition Mount Size UseDevice Volser Addr 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# cd /usr/lib/X11/app-defaults # cp X3270 X3270old Remote resources# vi Disk caches System BWrites Cache Hits Tuning cachesize FSI Channel AdaptersBackup and restore considerations Scsi adapter for the ThinkPadDisk fragmentation 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 Flexes mount A90 S390/WORK01 710 Altcons560 Home/tape3 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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