OSI/MHS SCF Reference Manual

OSI/MHS SCF Commands
OSI /MHS SCF Reference Manual—424828-001
2-65
ADD GROUP Command
Considerations
•
When you add a group, the group is not started automatically; it is in the STOPPED
state after it is added.
•
To add an MS group, you must first add at least one MR group.
•
You can configure different MR groups with the same OSI address, and you can
configure different RS groups with the same OSI address (although you will lose the
robust strategy of multiple groups). However, you cannot configure MR and RS
groups with the same OSI address.
•
ADD GROUP can set process priorities. If at run time the priority of the MHS
manager has changed so that it is unable to start the process at the requested priority,
the MHS manager starts the process at a priority one less than its own.
•
The WORK-SV volume specifies the swap volume for all processes in a group.
•
OSI/MHS GROUP processes do not run as process pairs. Each process runs in the
designated primary CPU only. If the primary CPU becomes unavailable, the backup
CPU takes over.
•
It is possible to specify the same primary and backup CPUs for a given group. For
example, you might specify CPUs 0 and 1 as primary and backup, respectively, for
all groups. If you then specify CPU 1 as the primary CPU for an individual group
but do not specify a backup CPU for that group, CPU 1 will be both the primary and
the backup (in effect giving you no backup). OSI/MHS allows this condition to
exist, but issues a warning.
Examples
These commands add GROUP objects to an OSI/MHS subsystem and specify some of
the attributes you can use with the ADD GROUP commands:
ADD GROUP $ZMHS.#MR.MRGRP1, CPU 2, &
BACKUP 8, PRI 155, &
PDU-STORE $PDUST.MR1SV.PDU1, &
PDU-LOG-FILE $PDUST.MR1SV.LOG1, &
RTS-PNAME $ZMHS.#RTS1, &
RTS-CPU 3, RTS-BACKUP 4, &
MRP-PNAME $ZMHS.#MRP1, &
MRP-CPU 3, MRP-BACKUP 4, MRP-PRI 140, &
SC-PNAME $ZMHS.#SC1, &
MR-NSAP 123084AF
ADD GROUP $ZMHS.#MS.MSGRP1, CPU 2, &
BACKUP 8, PRI 155, &
PDU-STORE $PDUST.MS1SV.PDU1, &
PDU-LOG-FILE $PDUST.MS1SV.LOG1, &
MSG-STORE-SV $SQLV.SQLSV, &
MS-PNAME $ZMHS.#MS1, &
MR-COUNT SYS
ADD GROUP $ZMHS.#MS.MSGRP2, CPU 4, &
BACKUP 3, PRI 155, &