Installation guide

Saving Memory Dumps
HP-UX version 11.00.03 Administering Fault Tolerant Hardware 5-49
– If you want to configure the kernel without any dump devices, use the
following dump statement in the system file:
dump none
NOTE
If you omit any dump statements from the system file, the kernel will
use the primary paging device (swap device) as the dump device.
2. After editing the system file, build a new kernel file using the config
command.
3. Save the existing kernel file to a safe place in case the new kernel file can not
be booted and you need to boot again from the old one.
4. Boot your system from the new kernel file to activate your new dump device
definitions.
Modifying Run-Time Dump Device Definitions
To replace or supplement any dump device definitions that are built into your
kernel while the system is booting or running, you can instruct
/sbin/crashconf utility to read dump entries in the /etc/fstab file.
Defining Entries in the fstab File
You can define entries in the fstab file to activate dump devices during the HP-UX
initialization (boot) process, or when crashconf reads the file. You must define
one entry for each device or logical volume you want to use as a dump device,
using the following format:
devicefile_name / dump defaults 0 0
For example:
/dev/dsk/c0t3d0 / dump defaults 0 0
/dev/vg00/lvol2 / dump defaults 0 0
/dev/vg01/lvol1 / dump defaults 0 0
NOTE
Unlike dump device definitions built into the kernel, with run time
dump definitions you can use logical volumes from volume groups
other than the root volume group.