topic kernel parameteres does not get updated in Operating System - HP-UX

kernel parameteres does not get updated

Maicon Stihler — Mon, 14 Mar 2005 08:32:08 GMT

Hi,

I changed some static kernel parameters, rebuild the kernel and then rebooted my system. However the kernel parameters does not get updated. I followed the instructions given on HP'site and by some people here in this forum. Maybe Im missing something or trying to use some wrong parameters.

I attached the output of kmtune to show the state things are now. Things like max_thread_proc, maxssiz, mastsiz never get updated even after a reboot.

note: I started this thread again because I rated the answears to the other thread prematurely as 8... :/ sorry. Any help is welcome, thanks.

Re: kernel parameteres does not get updated

Steven E. Protter — Mon, 14 Mar 2005 08:35:52 GMT

I'm sure you got good answers in the prior thread.

I'll assume you followed the directions correctly.

This being true, I'd say check your system for missing components. In /stand is there a system file, does it match up after you make your changes with your changes?

Is ther adequate space in the /stand filesystem to build a kernel?

Do you have other systems where the procedures work? If this is true, there is something wrong with this system, not the instructions.

SEP

Re: kernel parameteres does not get updated

Tony Scully_2 — Mon, 14 Mar 2005 15:14:37 GMT

What was the process you followed? Has the server definately rebooted?

Can you post a long listing (ls -lt) of /stand and /stand/build?

Cheers,

T

Re: kernel parameteres does not get updated

Deoncia Grayson_1 — Mon, 14 Mar 2005 15:29:44 GMT

Are you trying to rebuild the kernel from the command line or are you using SAM?

Re: kernel parameteres does not get updated

Maicon Stihler — Mon, 14 Mar 2005 15:32:56 GMT

I followed the steps given in "Reconfiguring the kernel in HP-UX Release 11i v1.5" by HP. I tried reconfiguring the kernel using "sam" and tried a manual procedure (using other tools).

The server was rebooted all the time when the kernel was modified.

The (ls -lt) follows:
mtlab2:/> ls -lt /stand
total 85328
drwxr-xr-x 2 root root 1024 Feb 15 10:50 krs_tmp
drwxr-xr-x 2 root sys 1024 Feb 15 10:50 krs
-rw-r--r-- 1 root sys 917 Feb 15 10:50 system
-rw-r--r-- 1 root sys 2400 Feb 12 17:43 ioconfig
drwxr-xr-x 5 root sys 1024 Feb 12 17:41 dlkm
drwxr-xr-x 2 root root 1024 Feb 12 17:40 krs_lkg
-rw------- 1 root root 12 Feb 12 17:40 rootconf
drwxr-xr-x 4 root sys 3072 Feb 12 17:38 build
-rwxr-xr-x 1 root sys 21631560 Feb 12 17:35 vmunix
drwxr-xr-x 5 root sys 1024 Feb 12 15:20 dlkm.vmunix.prev
-rwxr-xr-x 1 root sys 21631560 Feb 12 15:13 vmunix.prev
-rw-r--r-- 1 root sys 893 Feb 12 15:12 system.prev
drwxr-xr-x 2 root sys 1024 Nov 29 15:25 system.d
-r--r--r-- 1 root sys 82 Nov 29 15:07 kernrel
-rw-r--r-- 1 root sys 19 Nov 29 10:51 bootconf
drwxr-xr-x 2 root root 65536 Nov 29 10:50 lost+found
mtlab2:/>

Re: kernel parameteres does not get updated

Sundar_7 — Mon, 14 Mar 2005 15:33:28 GMT

Without you telling us the procedure followed to rebuild the kernel, we can never tell you what went wrong :-)

Here is the standard procedure to tune and rebuild the kernel from the command line

# cd /stand/build
# /usr/lbin/sysadm/system_prep -s system
# kmtune -s = -S system
# mk_kernel -s system
# kmupdate
# cd /
# /usr/sbin/shutdown -r -y 0

Try this and see if it helps.

Re: kernel parameteres does not get updated

Alex Lavrov. — Mon, 14 Mar 2005 15:33:35 GMT

Maybe you forgot kmupdate? so the next boot the kernel will be replaced?

Reagrds,
Alex

Re: kernel parameteres does not get updated

Sundar_7 — Mon, 14 Mar 2005 15:42:05 GMT

oops, missed one step in my last post.

kmupdate takes care of only vmunix and dlkm directory. You should manually copy and move system file.

Re: kernel parameteres does not get updated

Tony Scully_2 — Mon, 14 Mar 2005 16:02:04 GMT

Does the /stand/system file have the correct (updated) values? Also can you post a listing (ls -lt) of /stand/build? I assume the timestamps on these files are just old becasue the system clock is wrong?

Does /etc/dmesg give any output?

T

Re: kernel parameteres does not get updated

Maicon Stihler — Tue, 15 Mar 2005 06:25:29 GMT

I cant access the machine anymore, but as soon as I get to it I will try your recommendations.

Thank you all