Reconfiguring the Kernel in HP-UX Release 11i Version 1.5

Reconﬁguring the kernel in HP-UX Release 11i Version 1.5

Reconﬁguring the Kernel

Chapter 1 7

when adding or removing DLKMs).

Since the introduction of DLKMs, dynamic kernel conﬁguration of the running kernel is

possible when adding or removing a DLKM. Although HP-UX Release 11i Version 1.5 is not

released with DLKM content, certain optional add-on HP-UX software is available as DLKM

modules.

If using HP-UX commands to add or remove static traditional kernel modules, follow the

instructions outlined in “Steps to Perform Whole Kernel Conﬁguration Using HP-UX

Commands” on page 7. To add or remove DLKM kernel modules, refer to the white paper

Managing and Developing Dynamically Loadable Kernel Modules.

NOTE If you would like to permanently save the running kernel before performing

whole kernel conﬁguration for the ﬁrst time, refer to “Saving a Backup Kernel

Permanently” on page 10.

Steps to Perform Whole Kernel Conﬁguration Using HP-UX Commands

To use HP-UX commands to reconﬁgure the kernel:

1. Log in as superuser on the machine for which a new kernel is being generated. You can log

in remotely from another location by using the /usr/bin/rlogin command.

2. Change directory to the build environment (/stand/build). There, execute a system

preparation script, system_prep. system_prep writes a system ﬁle based on your current

kernel in the current directory. (That is, it creates /stand/build/system.) The -v

provides verbose explanation as the script executes.

cd /stand/build

/usr/lbin/sysadm/system_prep -v -s system

3. Use the kmsystem (1M) command:

/usr/sbin/kmsystem -S /stand/build/system

to view the kernel modules that were already explicitly selected for the next kernel build:

Note that additional kernel modules may be conﬁgured because of module dependencies or

because they are required kernel modules as indicated in their master ﬁles.

Add absent kernel modules (like device drivers) using the kmsystem command. The -c Y

option speciﬁes the module name to be conﬁgured into the system:

/usr/sbin/kmsystem -S /stand/build/system -c Y driver-name

NOTE Direct edits to the HP-UX system description ﬁles to add or remove kernel