Reconfiguring vPars v6 memory with zero downtime

vPar online memory migration – An Illustration

This section illustrates the usage of commands through a vPar memory migration example. At each step, appropriate

commands are executed to look at the memory usage and monitor the progress of the operation. Only the relevant

output from the command is shown.

In this example, the VSP is congured with several vPars and VM guests as follows:

# hpvmstatus

[Virtual Machines]

Virtual Machine Name VM # Type OS Type State #VCPUs #Devs #Nets Memory

==================== ==== ==== ===== ======= ===== ===== ===== ========

vPar0003 3 VP HPUX On (OS) 1 1 1 9216 M B

SHVM0005 5 SH HPUX On (OS) 1 1 1 9 GB

SHVM0006 6 SH HPUX On (OS) 1 1 1 9 GB

SHVM0007 7 SH HPUX On (OS) 1 1 1 2 GB

vPar0001 1 VP HPUX On (OS) 1 1 1 4096 MB

vPar0002 2 VP HPUX On (OS) 1 1 1 10240 M B

vPar0004 4 VP HPUX On (OS) 1 1 1 9216 M B

The hpvmstatus command shows the total used and available memory in the vPar/VM memory pool.

# hpvmstatus -s

…

Total memory allocated for vPars and VMs = 57280 Mbytes

Memory in use by vPars and VMs = 54144 Mbytes

Available memory for vPars and VMs = 3136 Mbytes

…

The vparstatus command shows the total and oating memory details for every vPar.

# vparstatus

…

[Virtual Partition Resource Summary]

Virtual Partition CPU Num Num Total MB Floating MB

Num Name Min/Max CPUs IO Memory Memory

=== ====================== ======== ==== ==== ========= =============

3 vPar0003 1/512 1 2 9216 5120

1 vPar0001 1/512 1 2 4096 0

2 vPar0002 1/512 1 2 10240 4096

4 vPar0004 1/512 1 2 9216 5120

Technical white paper | HP-UX vPars and Integrity VM v6.2