IBM s/390 manual Terminal resources

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The device(00) parameter describes the first device of this resource set. The index number is decimal; it must begin with 00 and be incremented by one for each additional device. If your device addressing scheme (at the OS/390 level) requires addressing gaps, you must define dummy (OFFLINE) devices in the resource set. The addresses seen at the OS/390 level are set by the cu statement (in the systems definition section) that points to this resource set.

The device type (3390-1and 3390-3in this example) must be from the list of known FLEX-ES emulated device types. (These are listed in Appendix , “Emulated device types” on page 76.) The next parameter, /s390/xxxxx, is the Linux file that contains the emulated 3390 volume.

This can be the actual name or a symbolic link.

The keyword devopt indicates that optional parameters follow. The writethroughcache parameter causes the FLEX-ES 3390 emulation program to consider s S/390 write operation complete when the data is actually written to disk. This is described in “Disk caches” on page 50.

The trackcachesize= parameter tells the emulation program to allocate the indicated number of track buffers (3390 tracks, in this example) for a cache. The default cache size is one emulated cylinder (15 tracks for a 3390) for each emulated S/390 disk volume. A larger cache size may improve performance, but at the expense of using more ThinkPad memory. In general, the default cache size is acceptable.

3270 terminal resources

Emulated 3270 terminals, which are actually TN3270 sessions (or x3270 sessions) to a FLEX-ES server running under Linux and appear to the S/390 as local, channel-attached, non-SNA terminals, are defined as follows:

R10A3174: cu 3174 interface local(1) device(00) 3278 mastcon device(01) 3278 term701 device(02) 3278 term702 device(03) 3278 OFFLINE device(04) 3278 @9.12.17.210

.....

device(15) 3278 term70F end R10A3174

The interface, local, device, and device index parameters have already been described. The 3174 cutype is a provided FLEX-ES value and device type 3278 is a device type emulated by FLEX-ES. Each emulated 3270 is connected through a FLEX-ES TN3270 server. If the 3278 keyword is followed by @IP-address(such as @9.12.17.210 in the example), the FLEX-ES TN3270 server waits for a TN3270 connection from this IP address. If the 3278 keyword is followed by the OFFLINE keyword, then a FLEX-ES mount command must be issued to assign either an IP address for the connection or a name for the Terminal Solicitor. If the 3278 keyword is followed by a name (such as mstcon or term70F), this name is added to the list of terminals available through the FLEX-ES Terminal Solicitor (which is described in “Building a shell script” on page 29 .)

Typical mount commands, from a flexes prompt, might be:

flexes> mount 703 bills flexes> mount 704 @9.12.17.211

78S/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 Linux installation ThinkPadPartition Manually Partition Mount Point Device Requested Actual Type PurposeDevice Partition Type Default Boot 12.17.210255.255.255.0 12.17.150Gnome Installation notes Monitor Setup IBM 9513 T55A TFT No clock chip 24 bitSelect Start X automatically # df -h# ps -ef grep xinetd Etc/xinetd.d # vi telnet# 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 OS/390 AD systems Next stepsAD systems # mkdir /s3912 OS/390 on CD-ROM Basic CD-ROM formats3 OS/390 device configuration FLEX-ES formatsInstallation tasks Unzipping and installing Awsckd CD-ROM filesAn unzip program 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 CommentsBuilding a shell script $ cd /usr/flexes/rundir# resadm -s R10A.rescf $ resadm -r$ sh shos Flexes ipl a80 0a82cs Terminal Solicitor IPL OS/390=stor Operation and use User terminal connection11.42.47 A80,8Linux TN3270 Iodf requirementsSystem performance monitors Rmf5 TCP/IP for OS/390 Shutting down # resadm -T# resadm -k # exit36 S/390 PID ThinkPad Enabled for S/390 Additional Topics Basic debugging Security Operating Systems Messages consoleServer memory Vmstat command Importance of Linux swapping CPUUltrabay Using a second Linux hard disk# cat /proc/partitions Second disk planning Partition Mount Size Use Disk layout AD systemDevice Volser Addr Use FLEX-ES FakeTape on OS/390 Alternative method560 222222Multi-system setup X3270 client $ x3270 -model 3 -keymap pc -port tn3270 localhost$ x3270 -model 3 -keymap pc -port tn3270 localhostt91f Function Keys UsedRemote resources # cd /usr/lib/X11/app-defaults # cp X3270 X3270old# vi Disk caches System BWrites Cache Hits Tuning cachesize FSI Channel AdaptersScsi adapter for the ThinkPad Backup and restore considerationsDisk 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 710 Altcons Flexes mount A90 S390/WORK01560 Home/tape3 84 S/390 PID ThinkPad Enabled for S/390 Special notices 86 S/390 PID ThinkPad Enabled for S/390 How to get IBM Redbooks IBM RedbooksReferenced Web sites 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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