rebuild kernel, on-line

[Victor_5]

11.0, how to rebuild kernel, on line?

[Michael Tully]

Hi Shawn,

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

Take note of the existing kernel name, probably vmunix.prev
# cd /

Reboot or shutdown

HTH
-Michael

[James R. Ferguson]

Hi Shawn:

Make any kernel parameter changes with 'kmtune':

# kmtune -s = -S /stand/build/system

# cd /stand/build

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

# /usr/sbin/mk_kernel -s system

# mv /stand/system /stand/system.prev

# mv /stand/vmunix /stand/vmunix.prev

# mv /stand/dlkm /stand/dlkm.vmunix.prev

# mv /stand/build/system /stand/system

# kmupdate /stand/build/vmunix_test

# shutdown -ry 0

...JRF...

[Victor_5]

Hi Friends:

Thanks a lot for your quick responses.

However, I am looking for a method to rebuild kernel without shutdown?

[Michael Tully]

Hi Shawn,

Once you have rebuilt your kernel you not
obligated to reboot straight away, however
in saying that, the changes that are made
using the procedures given to you will not be
available until the reboot has been
performed and the /stand/vmunix file has been
loaded into memory.

HTH
-Michael

[James R. Ferguson · Accepted solution]

Hi Shawn:

Tuning the kernel dynamically without a reboot appears doesn't appear until 11.11. Even then, some parameters remain "static". That is, their adjustment requires a reboot. Other parameters are defined as "dynamic" and can be tuned without reboot.

Kernel rearchitecture is a very active project. In addition to dynamic parameters, self-tuning ones will appear in new releases. Old names, like 'nproc' and 'nfile' will also become aliases for more descriptive identifiers.

Regards!

...JRF...