Installing and Managing HP-UX Virtual Partitions (A.01.01)

Monitor and Shell Commands
Resetting a Hung Partition
Chapter 598
Resetting a Hung Partition
Just as it is occasionally necessary to issue a hard reset (RS) or a soft
reset (TOC) for a non-vPars OS instance, it is occasionally necessary to
issue similar resets for a vPars OS instance.
Hard Reset
On a non-vPars computer, a hard reset cold boots the entire computer. To
issue a hard reset, the administrator types a CTRL-B at the console to
connect to the service processor and then types the command RS (reset),
at which time the entire computer cold boots.
On a vPars computer, a hard reset will reset the entire
computer--including the monitor and all the virtual partitions.
To simulate a hard reset on only a partition, from a running partition,
use vparreset with the -h option. For example, if winona2 is hung, we
can execute vparreset from the running partition winona1:
winona1# vparreset -p winona2 –h
The –h option also inhibits the autoboot behavior (just like shutdown -h
does); therefore -h can be used to break out of a reboot loop. Because -h
overrides the autoboot setting for that partition, the partition must be
manually restarted via vparboot (e.g, winona1# vparboot -p
winona2).
Other virtual partitions are unaffected when one virtual partition is
reset.
Soft Reset
On a non-vPars computer, a soft reset (TOC) allows HP-UX to attempt to
capture a state and potentially create a crash dump and then the
computer reboots. To issue a soft reset, the administrator typesa CTRL-B
at the console to connect to a service processor and then types the
command TC (transfer of control).
On a vPars computer, a soft reset will take dumps of all the partitions
1
as
well as the monitor image, and then the entire computer reboots.
1. See note titled “” on page 39.