Installation guide

Saving Memory Dumps
HP-UX version 11.00.03 Administering Fault Tolerant Hardware 5-47
Configuring a Dump Device for savecrash
You can configure a dump device into the kernel through the SAM interface or
through HP-UX commands. You can also modify run-time dump device
definitions though the fstab file and the crashconf utility. For more
information, refer to Managing Systems and Workgroups (B2355-90157).
Configuring a Dump Device into the Kernel
You can use the following methods to configure a dump device into the kernel:
■ using SAM
■ using HP-UX operating system commands
If necessary, you can define more than one dump device so that if the first one fills
up, the next one is used to continue the dumping process until the dump is
complete or no more defined space is available.
NOTE
If you choose not to use the default dump device, you must define it
before you build the kernel for your system. And, if you want to change
the device, you need to build a new kernel file and boot to it for the
changes to take effect.
Using SAM to Configure a Dump Device
The easiest way to configure into the kernel which devices can be used as dump
device is to use SAM. The definition screen is located in SAM’s
Kernel
Configuration
area. After changing the definition(s), you must build a new kernel
and reboot the system using the new kernel file to make the changes take effect.
1. Run SAM and select the
Kernel Configuration area.
2. From the
Kernel Configuration area, select the Dump Devices area.
A list of dump directories that will be configured into the next kernel built by
SAM is displayed. This is the list of pending dump devices.
3. Use SAM’s action menu to add, remove or modify devices or logical volumes
until the list of pending dump devices is as you would like it to be in the new
kernel.