Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Administering a System: Booting and Shutdown
Abnormal System Shutdowns
Chapter 5 551
You can interrupt the dump at any time by pressing the ESC (escape) key.
It can take as much as 15 seconds to abort. However, if you interrupt a
dump, it will be as though a dump never occurred; that is, you will not
get a partial dump.
Following the dump, the system attempts to reboot.
The Reboot
After the dumping of physical memory pages is complete, the system
attempts to reboot (if the AUTOBOOT flag is set). For information on the
AUTOBOOT flag, see “Enabling / Disabling Autoboot” on page 489.
The savecrash Processing Option You can define whether or not you
want a process called savecrash to run as your system boots (on HP-UX
systems prior to Release 11.0 the process is called savecore). This
process copies (and optionally compresses) the memory image stored on
the dump devices to the HP-UX file system area.
Dual-Mode Devices (dump / swap) By default, savecrash is enabled
and performs its copy during the boot process. You can disable this
operation by editing the /etc/rc.config.d/savecrash file, setting the
SAVECRASH environment variable to a value of 0. This is generally safe to
do if your dump devices are not also being used as paging devices.
CAUTION If you are using your devices for both paging and dumping, do not disable
the savecrash boot processing or you will lose the dumped memory image
to subsequent system paging activity.
What to Do After the System Has Rebooted
Normal Operation
System Reboot
Resume