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Configure Scan Dump Policy
Note: This function works only on CHRP systems and only under diagnostics 5.1.0.35
or later.
Configure Scan Dump Policy allows the user to set or view the scan dump policy (scan
dump control and size) in NVRAM. Scan Dump data is a set of chip data that the
service processor gathers after a system malfunction. It consists of chip scan rings, chip
trace arrays, and Scan COM (SCOM) registers. This data is stored in the scan-log
partition of the system’s Nonvolatile Random Access Memory (NVRAM).
Use this service aid to display and change the following settings for the Scan Dump
Policy at run time:
v Scan Dump Control (how often the dump is taken)
and
v Scan Dump Size (size and content of the dump)
The Scan Dump Control (SDC) settings are:
v As Needed: This setting allows the platform firmware to determine whether a scan
dump is performed. This is the default setting for the dump policy.
v Always: This setting overrides the firmware recommendations and always performs a
dump after a system failure.
The Scan Dump Size (SDS) settings are:
v As Requested - Dump content is determined by the platform firmware.
v Minimum - Dump content collected provides the minimum debug information. The
intent is to allow the platform to reboot as quickly as possible.
v Optimum - Dump content collected provides a moderate amount of debug
information.
v Complete - Dump data provides the most complete error coverage at the expense of
reboot speed.
You can access this task directly from the AIX command line by typing:
/usr/lpp/diagnostics/bin/uspchrp -d
Chapter 6. Introduction to Tasks and Service Aids 105