IBM s/390 manual FLEX-ES FakeTape on OS/390, Alternative method

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3390-2

OS39PA

A83

DB2

3390-2

OS3PAA

A84

Transaction Server (CICS)

3390-1

WORK01

A90

Work (storage) volume

3390-1

WORK02

A91

Work (storage) volume

3390-1

WORK03

A92

Work (storage) volume

(about 12 GB still available)

Since the CD-ROM drive and the second hard disk cannot be installed at the same time, it was necessary to stage volumes from the AD CD-ROMs. That is, we unzipped and converted (using ckdconvaws) OS39DA, OS3DAA, OS3DAB, OS39PA, and OS3PAA onto the first hard drive (mount point /s390).7 The process of unzipping and installing a volume from an AD CD-ROM system is described in “Installation tasks” on page 24. We then shut down Linux, removed the CD-ROM drive and installed the second hard disk, and rebooted Linux. We then copied the appropriate files to the second disk (mount point /s391):

$cp /s390/OS39DA /s391/OS39DA

$cp /s390/OS3DAA /s391/OS3DAA

$cp /s390/OS3DAB /s391/OS3DAB

$cp /s390/OS39PA /s391/OS39PA

$cp /s390/OS3PAA /s391/OS3PAA

$rm /s390/OS39DA

$rm /s390/OS3DAA

$rm /s390/OS3DAB

$rm /s390/OS39PA

$rm /s390/OS3PAB

The three work volumes are not part of the AD system. We created them with the ckdfmt command:

$ckdfmt -n /s391/WORK01 3390-1

$ckdfmt -n /s391/WORK02 3390-1

$ckdfmt -n /s391/WORK03 3390-1

5.5.4Alternative method

We described using two FLEX-ES definition files as a way to deal with a second hard disk drive that is not always present. An alternative is to use a single FLEX-ES resources definition file that specifies all the emulated S/390 drives on the second hard disk as OFFLINE. Two startup shell scripts would be used. One (for use when both hard disks are present) would contain a series of FLEX-ES mount commands to, in effect, bring the volumes on the second hard disk online.

5.6 FLEX-ES FakeTape on OS/390

FakeTape8 emulates tape devices using Linux disk files instead of tape drives. Provided the appropriate tape devices are defined in the OS/390 IODF configuration data set, FakeTape will emulate any type of tape drive from 3420 to 3490-E. Because FakeTape always writes and reads the same format to/from Linux, it operates at the same speed for all different emulated tape device types. We ran several tape jobs using IEBGENER, IEBCOPY and DFDSS and they all performed well. Our definitions included a 3480 tape drive at address 560.

This is one of the jobs we executed:

//P390T

JOB 1,OGDEN,MSGCLASS=X

7We elected not to restore the other AD volumes containing IMS and WebSphere components.

8FakeTape is a trademark of Fundamental Software, Incorporated.

Chapter 5. Additional Topics

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Contents Bill Ogden ThinkPad Enabled for S/390Page International Technical Support Organization First Edition October Contents Shutting down Index Vi S/390 PID ThinkPad Enabled for S/390 Author Special noticeComments welcome IBM trademarksIntroduction ThinkPad/EFS systems Purpose of this redbookFLEX-ES Positioning with other small S/390s LinuxThinkPad/EFS hardware used Terminology Disk planning System and Linux installationDifferences Mount Point Device Requested Actual Type Purpose Linux installationThinkPad Partition Manually Partition12.17.150 Device Partition Type Default Boot12.17.210 255.255.255.0Gnome # df -h Installation notesMonitor Setup IBM 9513 T55A TFT No clock chip 24 bit Select Start X automatically# 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 Brief introduction FLEX-ESPC Processor in ThinkPad Page Installation Installing the FLEX-ES license key # mkdir /s391 OS/390 AD systemsNext steps AD systemsBasic CD-ROM formats 2 OS/390 on CD-ROMFLEX-ES formats 3 OS/390 device configurationMount /dev/cdrom /mnt/cdrom Installation tasksUnzipping and installing Awsckd CD-ROM files An unzip programFile ownership Minor problemsFiles unzip in wrong order Volume in two separate zip filesFLEX-ES Operation Comments FLEX-ES system and resource definitions$ resadm -r Building a shell script$ cd /usr/flexes/rundir # resadm -s R10A.rescf$ sh shos Flexes ipl a80 0a82cs Terminal Solicitor IPL OS/390=stor A80,8 Operation and useUser terminal connection 11.42.47Rmf Linux TN3270Iodf requirements System performance monitors5 TCP/IP for OS/390 # exit Shutting down# resadm -T # resadm -k36 S/390 PID ThinkPad Enabled for S/390 Additional Topics Basic debugging Security Operating Systems Messages consoleServer memory Vmstat command CPU Importance of Linux swappingUltrabay Using a second Linux hard disk# cat /proc/partitions Second disk planning Partition Mount Size Use Disk layout AD systemDevice Volser Addr Use Alternative method FLEX-ES FakeTape on OS/390222222 560Multi-system setup Function Keys Used X3270 client$ x3270 -model 3 -keymap pc -port tn3270 localhost $ x3270 -model 3 -keymap pc -port tn3270 localhostt91fRemote resources # cd /usr/lib/X11/app-defaults # cp X3270 X3270old# vi System B Disk cachesWrites Cache Hits FSI Channel Adapters Tuning cachesizeScsi adapter for the ThinkPad Backup and restore considerationsDisk fragmentation $ tar -cvzf /holding/OS39RA.tarz /s390/OS39RA Using tar to back up S/390 volumes$ cd /usr/flexes/rundir $ sh buOS39RAc Using tar and ftpCD-RW drive 16 S/390 identificationRAS discussion Display PSW and registersLinux windows Verify ckd diskThinkPad power control Installing FLEX-ES upgradesCommon commands Useful Linux commandsText editors Multiple consoles, sessions, screens62 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 Basic definitions for a single HDD Appendix A. FLEX-ES definition listingsShell script for a single HDD Definitions for two HDDs Shell script for two HDDs System definitions Appendix B. FLEX-ES parametersCpu0 Cpu1 Cpu2 Emulated control unit types Resource definitionsTypical resource definitions Emulated device typesCKD disk resources Terminal resources LAN resources Tape resourcesCloned devices Common rules Resadm commandCLI 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 Other resources How to get IBM RedbooksIBM Redbooks Referenced Web sitesIBM 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 System setup AD CD-ROM use System operation ThinkPad Enabled for S/390
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