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 |
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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 -hcan be used to break
out of a reboot loop. Because -hoverrides 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 |
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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
types a 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[2] as well as the monitor
image, and then the entire computer reboots.
To simulate a soft reset on only one partition, from a running
partition, use vparreset with the -t (for TOC) option.
For example, if winona2 is hung, we can
execute vparreset from the running partition winona1:
winona1# vparreset -p winona2 -t
The target virtual partition either shuts down or reboots
according to the setting of the autoboot attribute
of that virtual partition.
Other virtual partitions are unaffected when one virtual partition
is reset.
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 | NOTE: Unlike the RS and TC commands, the vparreset command also displays Processor Information Module (PIM)
data unless the -qoption is specified. |
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