HP (Hewlett-Packard) 9000 V2500 SCA ユーザーズマニュアル

Recovering from failures

When the system crashes, the system console displays a panic message 
similar to the following:

*** A system crash has occurred.  (See the above messages for details.)
*** The system is now preparing to dump physical memory to disk, for use
*** in debugging the crash.

*** The dump will be a SELECTIVE dump:  21 of 128 megabytes.

*** 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:  21 of 128 megabytes.
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.

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 

configured or requested by the operator).

• The entire contents of selected memory pages are dumped (if a 

selective dump was configured or requested by the operator).

• 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 
progress. Interrupt the dump at any time by pressing the 

 key. 

However, if a dump is interrupted, all information is lost.