NonStop S-Series Operations Guide (G06.29+)

Processors: Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-009
11-10
Dumping a Processor to Disk
Dumping a Processor to Disk
A processor dump to disk occurs while the system is running. The dump occurs over
either the X or Y ServerNet fabric. When a processor is dumped to disk, the
RCVDUMP utility begins copying the dump in a compressed format from the specified
processor into a disk file called dumpfile. If dumpfile does not exist, the
RCVDUMP utility creates it. As the dump proceeds, the status of the processor being
dumped changes in the Processor Status dialog box to indicate that a dump is in
progress. When the dump is finished:
•
The status of the selected processor in the Processor Status dialog box changes to
indicate the completion of the dump.
•
RCVDUMP sends this informational message to the terminal-emulation window
from which it was run:
CPU n has been dumped to dumpfile.
Alerts
Before you perform a processor dump to disk:
•
You must have a second processor connected to a terminal or workstation with a
running command interpreter. The processor in which the TACL command
interpreter is running performs the dump.
•
If dumpfile already exists, it must be empty. (Its end-of-file pointer, or EOF, must
be zero.)
•
You must not prime or reset the processor before performing a processor dump.
Before You Begin
To prepare for a disk dump:
1. Verify that a disk is available with enough space to store the dump.
A processor dump requires 256 extents. Each extent should equal slightly more
than 1/256 the size of the processor memory. For example, for a processor with
256 megabytes of main memory, you need 256 extents of at least 512 pages each.
2. To empty an existing dumpfile:
> FUP PURGEDATA dumpfile
3. Collect information about the reason for the halt:
a. Log on to the OSM or TSM Low-Level Link.
b. On the toolbar, click Processor Status. The Processor Status dialog box
appears.
c. Write down the halt code and the status message displayed in the Processor
Status dialog box for the processor that is halted.