Change Kernel Parameters -- not using SAM

[Alzhy]

To date, I've been using SAM to change kernel params. There is a kernel parameter that does not appear in SAM's Kernel Tunables that I think needs to be added manually.

How do I go about this in HPUX 11i v1.0?

[Laurent Menase]

Hi Nelson,

What kernel parameters do you whish to modify?

If it is a real kernel parameter youcan indeed
add it to /stand/system
Then mk_kernel
Then kmupdate
Then cd / ; shutdown -r -y 0

Before doing that type of thing be sure to make a backup of /stand/system, and of
/stand/vmunix and /stand/dlkm in the /stand directory.
for instance rename
cp /stand/vmunix /stand/vmunix.ok
cp -r /stand/dlkm /stand/dlkm.vmunix.ok
then if the reboot fails you will be able to reboot from the kernel vmunix.ok

There are some other tunables:
dlkm or dynamique tunables specific to dlkm drivers, or dynamic tables.
use kmtune to modify them
ndd tunables for tcp/ip and socket relative parameters. use ndd to modify them

[Stefan Farrelly]

Just add it into /stand/system and rebuild your kernel. Once you reboot next time you use SAM is gets the list of variables from the running kernel so it will pick it up.

There are some hidden nfs kernel parameters too, we added these in manually to /stand/system and built a new kernel successfully.

[Alzhy]

Okay.. I got it..

as root

# cd /stand/build
# /usr/lbin/sysadm/system_prep -s system
# vi system (and add make your changes)
save file

# /usr/sbin/mk_kernel -s system
# /usr/sbin/kmupdate



Reboot..

[Michael Steele_2]

Almost:

# cd /stand/build
# /usr/lbin/sysadm/system_prep -s system
# vi /STAND/BUILD/system (and add make your changes)
save file
# /usr/sbin/mk_kernel -s system
# /usr/sbin/kmupdate
##########################################
# cp /stand/system /stand/system_old
# cp /stand/build/system /stand/system
# cd /
############################################
# shutdown -r now

[Alzhy]

Thanks y'all!

And thanks to the HP Docs site as well...