Key Points For The Dump Environment Settings - Fujitsu PRIMEQUEST 2000 Series Installation Manual

4.4 Key Points for the Dump Environment Settings (1/2)

Outline of the Dump Function

kdump function

RHEL's default dump function
Acquires the contents of the memory if an error occurs during operation.
sadump function

Dump function unique to PRIMEQUEST
Acquires the contents of the memory if the kdump function cannot or fails to acquire the dump.
Design of the Area Used for the Dump

Function
Area
name
kdump Dump saving area
sadump Dump device
(*) Installed memory capacity = Physical memory capacity
PRIMEQUEST 2000 Series Linux Installation Guide
Size
(Installed memory capacity (*) + 1GB) × the
number of memory dumps to be acquired ÷
0.9
(Installed memory capacity (*) + 512MB) × n
* n = the number of secondary devices in the
event of a device error + 1
The dump saving area cannot be shared between multiple

partitions. One dump saving area must be prepared for each
partition.
If the dump saving area is insufficient, the dump will not be

properly saved. Make sure that the free space is the required size.
The dump device cannot be shared between multiple partitions.

One dump device must be prepared for each partition.
The dump device cannot be shared with the file system or the

swap partition.
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Precautions
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