TACL Reference Manual

UTILS:TACL Commands and Functions
HP NonStop TACL Reference Manual—429513-018
8-28
BACKUPCPU Command
BACKUPCPU Command
Use the BACKUPCPU command to start a backup process for the current TACL
process or to replace an existing backup process. The BACKUPCPU command is an
alias for the #BACKUPCPU built-in function.
cpu
is the number of the processor where the backup TACL process is to be started.
Specify cpu as an integer in the range from 0 through 15. If you omit cpu,
BACKUPCPU deletes the existing backup process.
Considerations
•
BACKUPCPU with no cpu specification has no effect if the current TACL process
has no backup.
•
Only a named TACL process can have a backup. (For more information on named
processes, see the NAME option in the description of the RUN[D|V] Command on
page 8-156.)
•
The backup CPU cannot be the same as the primary CPU.
•
The named CPU need not be running at the time that BACKUPCPU is issued.
•
If you specify a backup CPU and a backup process already exists, TACL displays
an error message.
•
If the primary CPU becomes unavailable, TACL switches to the backup CPU. After
the primary CPU is reloaded, TACL switches back to the primary CPU. If a user is
logged on, TACL postpones this switch till the user logs off.
•
You can force your TACL to switch to the backup CPU by using the SWITCH
command.
•
All events, such as a backup-create error or an I/O error event, and the event
details are logged to the primary or $0 collector. This format is used:
TACL BACKUP CREATE ERROR: error, DETAIL: error-detail
error
is the error number returned by PROCESS_CREATE.
error-detail
is the error detail value returned by PROCESS_CREATE.
For more information about the $0 collector, see the EMS Manual.
BACKUPCPU [ cpu ]