Hitachi Compute Blade 500 Series User Manual page 118

Maximum concurrent
collection
Condition for data
collection
Guest software
operation
How to Use the Guest Memory Dump Function
For the basic usage of HVM management commands that are essential when
using the guest memory dump function, see the HVM Management Command
(HvmSh) operation Guide.
For how to use commands related to the guest memory dump function in
HVM management commands, see the HVM Management Command (HvmSh)
operation Guide.
Notes for using Guest Memory Dump
Follow notes described below when using the guest memory dump function.
• After guest memory dump is started, all logical Processors of the target
LPAR stop and logical server processing is not restarted. For this reason,
use this function only when logical server processing can no longer be
continued (such as when a logical server error has occurred).
• If you start using the LPAR after collecting a guest memory dump,
reactivate or deactivate the LPAR, activate the LPAR, and then restart the
guest OS.
• Therefore, if guest memory dump is started in the target LPAR during job
processing, all the logical Processors of the target LPAR stop and the
ongoing job stops accordingly. This is equivalent to a breakdown of the
target LPAR that will occur when guest memory dump of the LPAR is
started during job processing. For this reason, do not perform guest
memory dump to a working LPAR.
4-4
Hitachi Compute Blade 500 Series Logical partitioning manager User's Guide
Item
All the logical Processors that were stopped by the start
operation do not restart automatically, and still remain
inactive.
Progress The following contents of memory dump progress are
indication displayed on the screen.
- Total volume, transferred data volume, and transfer
percentage (transferred data volume / total volume × 100
(%))
One LPAR / LPAR manager machine (Another dump data
collection request to the same LPAR manager machine cannot
be accepted during memory dump even to another LPAR of the
same LPAR manager machine)
Memory dump data can be collected only when the target
LPAR is activated.
The guest memory dump function works as follows in relation
to the guest software program:
- Memory dump data can be collected regardless of the
operation of the guest software program (even when it can no
longer operate due to an error during operation).
Maintenance Functions
Description