HP Superdome 2 Partitioning Administrator Guide (5900-2540, December 2012)

8 Managing and Booting Virtual Partitions
This chapter addresses the following topics:
• “Modes: Switching between nPars and vPars Modes ” (page 94)
• “Managing: Creating a Virtual Partition” (page 98)
◦ “Booting a Virtual Partition” (page 98)
◦ “Managing: Modifying attributes of a Virtual Partition” (page 99)
◦ “Commands: Displaying vPars Resource Information (vparstatus)” (page 100)
◦ “Shutting Down or Rebooting a Virtual Partition” (page 104)
◦ “Shutting down all Virtual Partitions” (page 105)
◦ “Managing: Removing a Virtual Partition” (page 105)
Modes: Switching between nPars and vPars Modes
Modes
The mode can be set for an nPartition during creation time using the parcreate or the parmodify
command. Mode switching can thus be performed from the OA CLI. For vPars usage, there are
only two modes:
• vPars
Sets the next nPartition boot, to boot into the vPars environment. This enables you to boot to
the vPars mode, thereby booting all the virtual partitions in the nPartition.
• nPars
Sets the next nPartition boot, to boot into the standalone environment. In this mode, you cannot
boot the virtual partitions. However, you can boot any OE instance into the standalone mode.
For an nPartition that is already inactive, the mode switch occurs when the inactive nPartition
is booted.
By default, the memory setting for npars mode remains as 87.5% SLM and 12.5% ILM whereas
for vpars mode, it remains as 0% SLM and 100% ILM. The mode switch will not automatically
change the settings of ILM/SLM in the nPartition. You need to set this explicitly to change the
memory configuration using-L or -m blade option. When changing from vPar mode to nPar mode
there will be no change in the ratio of SLM and ILM.
If you want to configure SLM value, run parmodify command:
parmodify -p<nPar_id> -m
blade:<blade_path>:[blade_type]:[use_on_next_boot]:[failure_usage]:[slm_value]
Setting the mode using the OA GUI
The mode can be set for an nPartition during creation time using the Boot Options in the Modify
nPartition Window. Mode switching can thus be performed from the OA GUI.
To set the mode using OA GUI:
1. Open the OA GUI.
2. Login using the administrator credentials.
3. Click on nPartition name.
4. In the nPartition Status tab, click Modify nPartition.
94 Managing and Booting Virtual Partitions