SCF Reference Manual for the Kernel Subsystem

CONTROL Command (Sensitive Command)
Use the CONTROL command to power down a NonStop S-series server.
CAUTION: For the system power-off procedure and when to use this command, see the NonStop
S-Series Operations Guide or the NonStop Operations Guide (for J- and H-series RVUs).
You must be in interactive mode to use this sensitive command.
CONTROL [ /OUT file-spec/ ] SUBSYS $ZZKRN , SHUTDOWN
SUBSYS $ZZKRN
is the name of the Kernel subsystem. You can omit SUBSYS and $ZZKRN if you specified them
with an ASSUME command.
SHUTDOWN
specifies that the system perform an orderly shutdown of its hardware, prior to unplugging it
from the external power supply.
Consideration
Entering this command generates an operator message that reports the command, the time the
command was entered, and the group name and user name of the person issuing the command.
Example
This command powers off a NonStop server:
-> CONTROL SUBSYS $ZZKRN, SHUTDOWN
DELETE Command (Sensitive Command)
Use the DELETE command to remove a process object from the Kernel subsystem and from the
system configuration database (CONFIG). Only objects that were added with the ADD command
can be deleted.
DELETE [ / OUT file-spec / ] PROCESS $ZZKRN.gpname
PROCESS $ZZKRNgpname
is the name of a process controlled by the Kernel subsystem manager process. You can omit
PROCESS, $ZZKRN, and #gpname if you have specified them with an ASSUME command.
Considerations
• Deleting a Generic Process on page 3-28 describes how to use the DELETE command.
Specifically, you must put a generic process in the STOPPED object state before deleting it.
• If you enter a CONFIRM ON command (described in the SCF Reference Manual for G-Series
RVUs or the SCF Reference Manual for J-Series and H-Series RVUs) before the ADD command,
SCF displays This message in response to a successful ADD command:
Delete accepted by KERNEL: PROCESS \system.$ZZKRN.#process
• It is recommended that you enter a TIMEOUT command (described in the SCF Reference
Manual for G-Series RVUs or the SCF Reference Manual for J-Series and H-Series RVUs) to
specify a timeout value that is larger than the default 90 seconds when deleting a generic
process configured in multiple processors. Several processes can likely be deleted within the
90 second default. But if you delete a generic process that has been configured as a group
(by, for example, the CPU ALL attribute), or if you start multiple generic processes (by using
a wild card in the ABORT command), more time may be needed.
98 SCF Commands for the Kernel Subsystem