Guest Memory Dump Collection Command
Outline of Guest Memory Dump Collection Command
The guest memory dump function collects memory data (memory dump)
allocated to the specified guest (LPAR) on the LPAR manager side by
executing the HVM management command (HvmSh) on the LPAR manager
management server, and transfers the collected data to the external FTP
server to save it as a file.
This function allows memory dump even if a logical server error occurs, such
as when OS dump data cannot be collected by the guest OS, and therefore
can be used for analyzing logical server errors.
The figure below shows a schematic diagram of the guest memory dump
function.
Figure 4-1 Memory Dump of Guest OS
Specifications of Guest Memory Dump
The following table lists support items provided by the guest memory dump
function.
Table 4-1 Functions of Guest Memory Dump
Item Description
Dump target guest LPAR's memory dump is enabled regardless of the type of
guest OS. (Only when the guest OS is Linux)
Dump memory area
(collecting memory
range)
Collecting memory areas which are used by OS are three areas
below. (Memory range in LPAR cannot be specified)
DOS region : 00_0000_0000 to 00_0009_FFFF
Low Memory : 00_0010_0000 to 00_7FFF_FFFF
High Memory : 01_0000_0000 to [MMCFG] – 1
(Note) Memory ranges above are same as Niko2Dump of Basic
Mode.
4-2
Maintenance Functions
Hitachi Compute Blade 500 Series Logical partitioning manager User's Guide
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