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Processes: Monitoring and Recovery
HP Integrity NonStop NS-Series Operations Guide—529869-005
5-6
Recovery Operations for Processes
In nearly all circumstances, items that are essential to system operations that must be
running at all times restart automatically if they are stopped for any reason while the
NonStop Kernel operating system is running.
Some OSM processes stop after executing a macro that runs during system load or
during the reload of processor 0 or 1. Those processes include $ZOLHI.
Optionally, you can also configure other processes such as the Expand subsystem
manager process, $ZEXP, and the Safeguard monitor process, $ZSMP, as generic
processes.
Recovery Operations for Processes
For recovery operations on generic processes, use the SCF interface to the Kernel
subsystem and specify the PROCESS object. These SCF commands are available for
controlling generic processes:
Generic processes that are configured to be persistent usually do not require operator
intervention for recovery. In most circumstances, persistent generic processes restart
automatically.
For recovery operations on IOPs, refer to the WAN Subsystem Configuration and
Management Manual, the SWAN Concentrator and WAN Subsystem Troubleshooting
Guide, and the Expand Configuration and Management Manual.
For recovery operations on system processes, refer to the Guardian User’s Guide.
Related Reading
For more information about generic processes and the SCF interface to the Kernel
subsystem, refer to the SCF Reference Manual for the Kernel Subsystem.
For more information about IOPs, refer to the WAN Subsystem Configuration and
Management Manual, the SWAN Concentrator and WAN Subsystem Troubleshooting
Guide, and the Expand Configuration and Management Manual.
TFDSHLP $ZTH13 STOPPED None None
TFDSHLP $ZTH14 STOPPED None None
TFDSHLP $ZTH15 STOPPED None None
ZEXP $ZEXP STARTED 0 ,13 1 ,15 255,255
ZHOME $ZHOME STARTED 0 ,289 1 ,295 255,255
ZLOG $ZLOG STARTED 0 ,308 1 ,329 255,255
ZZKRN $ZZKRN STARTED 0 ,293 1 ,319 255,255
ZZLAN $ZZLAN STARTED 0 ,292 1 ,297 255,255
ZZSCL $ZZSCL STARTED 1 ,290 2 ,279 255,255
ZZSMN $ZZSMN STARTED 1 ,289 2 ,282 255,255
ZZSTO $ZZSTO STARTED 0 ,291 1 ,320 255,255
ZZWAN $ZZWAN STARTED 2 ,296 3 ,289 255,255
ABORT Terminates operation of a generic process. This command is not
supported for the subsystem manager processes.
START Initiates the operation of a generic process.