Problem

How to remove a vPar from nPar in HP-UX?

I have an HP-UX virtualization environment in which one nPar has 3 vPar as shown below:

# hpvmstatus
[Virtual Machines]
Virtual Machine Name VM #  Type OS Type State     #VCPUs #Devs #Nets Memory
==================== ===== ==== ======= ========= ====== ===== ===== =======
DBAPPWEB1               1 VP   HPUX    On (OS)        4     4     2 16384 MB
DBAPPWEB2               2 VP   HPUX    On (OS)        4     4     1 16384 MB
DBAPPWEB3               3 VP   HPUX    On (OS)        4     5     1 98304 MB

As virtual machine DBAPPWEB2 is no longer required, I have to remove this VM (vPar) from the above nPar.

Solution

To remove a Virtual Partition (vPar) from a Non-Uniform Memory Access (NUMA) Partition (nPar) using HPVM (HP Virtual Machine), you’ll need to perform a series of steps. Be cautious when doing this operation, as it can impact the virtualized environment. Make sure you have backups and follow your organization’s guidelines for system administration. Here are the steps to remove a vPar from a nPar using hpvm command which I followed:

• Connect to HPVM host (nPar): Log in to the HPVM host system as the superuser (root) or a user with administrative privileges.
• Stop the vPar: Before removing a vPar, it should be stopped. Use the hpvmstatus and hpvmstop commands to check the current status of the vPar and stop it. Here I have stopped the vPar DBAPPWEB2 which I want to remove.

  # hpvmstop -P DBAPPWEB2
  hpvmstop: Stop the virtual machine 'DBAPPWEB2'? [n/y]: y
  #
  

• Remove the vPar Configuration: To remove the vPar configuration, use the hpvmremove command followed by the name of the vPar you want to remove. Here vPar name is DBAPPWEB2.

  # hpvmremove -P DBAPPWEB2
  hpvmremove: Remove the virtual machine 'DBAPPWEB2'? [n/y]: y
  #
  

• Check and Confirm: After removing the vPar, double-check that the vPar is no longer listed in the virtualized environment configuration. Use the hpvmstatus command to verify that it has been successfully removed. Here output shows that vPar DBAPPWEB2 has been removed successfully.

  # hpvmstatus
  [Virtual Machines]
  Virtual Machine Name VM #  Type OS Type State     #VCPUs #Devs #Nets Memory
  ==================== ===== ==== ======= ========= ====== ===== ===== =======
  DBAPPWEB1               2 VP   HPUX    On (OS)        4     4     2 16384 MB
  DBAPPWEB3               3 VP   HPUX    On (OS)        4     5     1 98304 MB
  #
  

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Last Updated: September 09, 2023