HP-UX vPars and Integrity VM V6.1.5 Administrator Guide (5900-2295, April 2013)

6.12 Recovering a nonresponsive vPar
In the rare event that the OS of a vPar becomes nonresponsive, there is no prompt from a network
connection nor through the virtual console (vparconsole). In such a situation, you may need to
manually reset the partition. To recover a vPar that is nonresponsive, you can use the vparreset
command.
To recover a nonresponsive vPar, use the vparreset -g command. This results in a graceful
shutdown of the OS. The vPar can then be restarted. However, if the OS is nonresponsive, this
operation might not be successful. When vparreset -g does not succeed, consider the following
additional operations:
• Use the vparreset -t command if you want to initiate a transfer of control operation. This
option restarts the vPar. Also, a dump of the OS is collected if there is sufficient space, which
provides any troubleshooting data to determine the cause of the hang. The dump information
can later be used to troubleshoot the unresponsiveness of the vPar.
• Use the vparreset -h command to hard reset the vPar. This option restarts the vPar without
collecting an OS dump.
• Use the vparreset -d command to power down the vPar. This option does not restart the
vPar.
6.12 Recovering a nonresponsive vPar 75