IBM RS/6000 SP, Руководство по определению проблем

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This soft copy for use by IBM employees only.
The information gathered with the
snap
command can be used to identify and
resolve system problems. You must have root authority to execute this
command.
If you use the -a flag, then you need approximately 8 MB of temporary disk
space to collect all the system information, including the content of the error log.
The
-g flag gathers the following information:
•
Error report
•
Copy of the customized ODM
•
Trace file
•
User environment
• Amount of physical memory and paging space
•
Devices and attribute information
• Security user information
The output from the -g flag is written to /tmp/ibmsupt/general/general.snapfile.
However, you can specify another directory using the
-d flag.
The execution of the
snap
appends information to the previously-created files.
Use the
-r flag to remove previously-gathered and saved information.
Before you send your media to the Support Center, make sure you contact the
Center and obtain a Problem Management Number (PMR) which will be used to
trace the status of your problem from then on. Make sure you label the media
with this number and also the other pieces of information listed, to help the
support team act quickly on your problem.
There is not much left for you to do after this, apart from waiting for a response
from the Support Center. However, you may want to look at your dump to try to
analyze it yourself. The tool that is used by the Support Center to analyze your
dump is called
crash
which also is available on the system. However, the output
from the command is very user-unfriendly, and most people do not bother to
analyze it. However, the following section describes how to use
crash
to analyze
a system dump.
Chapter 8. Producing a System Dump
209