Operator Override Options; The Dump - HP 9000 V-Class Operator's Manual

Recovering from failures
Abnormal system shutdowns

Operator override options

When the system crashes, the system console displays a panic message
similar to the following:
*** A system crash has occurred.
*** The system is now preparing to dump physical memory to disk, for use
*** in debugging the crash.
*** The dump will be a SELECTIVE dump:
*** To change this dump type, press any key within 10 seconds.
*** Select one of the following dump types, by pressing the corresponding key:
N) There will be NO DUMP performed.
S) The dump will be a SELECTIVE dump:
F) The dump will be a FULL dump of 128 megabytes.
O) The dump will be an OLD-FORMAT dump of 128 megabytes.
*** Enter your selection now.
The operator can override any dump device definitions by entering N (for
no dump) at the system console within the 10-second override period.
If disk space is limited, but the operator feels that a dump is important,
the operator can enter S (for selective dump) regardless of the currently
defined dump level.

The dump

After the operator overrides the current dump level, or the 10-second
override period expires, HP-UX writes the physical memory contents to
the dump devices until one of the following conditions is true:
• The entire contents of memory are dumped (if a full dump was
• The entire contents of selected memory pages are dumped (if a
• Configured dump device space is exhausted
Depending on the amount of memory being dumped, this process can
take from a few seconds to hours.
During the dump, status messages on the system console indicate the
NOTE
progress. You can interrupt the dump at any time by pressing the
key. However, if you interrupt a dump, all information is lost.
94
(See the above messages for details.)
21 of 128 megabytes.
21 of 128 megabytes.
configured or requested by the operator).
selective dump was configured or requested by the operator).
ESC
Chapter 7