Chapter 5. S/390 operating system installation 53
install.) The base volsers were: DMTRES, DMTCAT, DMTOS1, DMTOS2, and DMTOS3. We
installed these as follows:
򐂰 Insert first CD in the CD-ROM drive and wait for Linux to open a window displaying the
contents of the CD. You could also use an ls command to display the contents:
$ls /mnt/cdrom (To display the contents of the CD)
dmtres.tar flexes.rsc flexes.sys ipl300 README.TXT
sg24-6834-00 startFlex startRes
򐂰 After inspecting the contents, we wanted two FLEX-ES definition files from the CD for later
use. We copied them into the rundir directory:
$ cp /mnt/cdrom/flexes.rsc /usr/flexes/rundir/DDrsc
$ cp /mnt/cdrom/flexes.sys /usr/flexes/rundir/DDsys
򐂰 Untar the emulated volume into our /s390 directory:
$ cd /s390
$ tar -zxvf /mnt/cdrom/dmtres.tar
(Close the CD-ROM automount window, if it is open)
$ umount /dev/cdrom
(Remove the CD)
򐂰 Install the next CD and untar the contents, following the same pattern.
We then customized the FLEX-ES definitions that were on the first CD and created a shell
script to help start this system. Our FLEX-ES definitions and the shell script are listed in
“Definitions for the Dallas DEMOpkg” on page 92. The original definitions (from the CD) were
in files DDrsc and DDsys; we merged these into a single file, DDdef. We determined the
addresses (S/390 device numbers) to use by studying the sample definitions and the
documentation provided with the CDs.
We compiled our definitions, started the FLEX-ES resource manager, started S/390
emulation (with the shell script), and IPLed our system:
$ cd /usr/flexes/rundir
$ cfcomp DDdef (Our FLEX-ES definitions)
# su (Must be root to start resource manager)
(password)
# resadm -s DDR.rescf (Start resource manager)
(pause) (Wait about 5 seconds)
# resadm -r (To confirm that it started OK)
# exit (Leave root)
$ sh shDD (Start the shell script)
flexes> ipl 0300 0301DP.1 (IPL the Dallas DEMOpkg system)
flexes>
We then logged onto TSO as SYSPRG1 (with the initial password the same as the userid).
The functions described here (cfcomp, resadm, shell scripts, the
flexes> prompt) are described
in the next chapter. They are presented here for completeness. (Please note that our choice
of DDR as a resource file name is not related to the DDR program often used with z/VM.)
5.4 OMA/2 distributions
The most likely use of an OMA/2 distribution is for z/VM. The following material describes the
initial steps for this process.
We started with two CDs in a package labeled Product Package 3390 DDR for z/VM Version
4 Release 3.0. Examination of the first CD disclosed two directories: tapes and 9999. The

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