topic Re: Kernel rebuilding problem in Operating System - HP-UX

Kernel rebuilding problem

Jun Zhang_4 — Tue, 07 Oct 2003 08:28:48 GMT

I have 11.0 runs on D370. After modifying the system file, mk_kernel created the vmunix_test file. I then did kmupdate, and got the following message,
kmupdate: Specified file /stand/build/vmunix_test is not kernel file
Same procedure was carried out on an E35 without a problem.

Jun

Re: Kernel rebuilding problem

Helen French — Tue, 07 Oct 2003 08:43:10 GMT

Some possible tries:

1) Check the output of "file /stand/build/vmunix_test" and see the output. Post the output

2) Check the revision of /etc/magic file (sometimes, this file might have been corrupted or on a wrong version) - 'what /etc/magic"

3) Install this patch (or the latest) if you haven't already - PHCO_24285 (awk patch)

Re: Kernel rebuilding problem

Stanimir — Tue, 07 Oct 2003 08:55:37 GMT

Hi!
I thing there is something wrong in your procedure of editing&creating kernel on
hp-ux 11. You have 2 ways after you prepare your /stand/system and have to
choise 1 of them:

1.
#mk_kernel -s ./system
- this created /stand/build/vmunix_test
#kmupdate /stand/build/vmunix_test
- and your kernel is ready to boot.

OR:

2.
#mk_kernel -s ./system -o /stand/vmunix
- this will create vmunix at once.

Try to check your steps or try second variant. And dont forget backup of old vmunix. :)

Good luck.
Stan.

Re: Kernel rebuilding problem

Jun Zhang_4 — Tue, 07 Oct 2003 09:45:52 GMT

# file vmunix_test
vmunix_test: PA-RISC1.1 executable -not stripped
# what /etc/magic
/etc/magic:
$Revision: 80.3 $
Installed PHCO_27251 (supersedes PHCO_24285).
Tried kmupdate, got the same message.

The output of "file vmunix_test" is the same as the output of "file vmunix".

Jun

Re: Kernel rebuilding problem

Jun Zhang_4 — Tue, 07 Oct 2003 09:56:34 GMT

Thanks for the replies.
# mk_kernel -s system -o /stand/vmunix
Generating module: krm...
Compiling conf.c...
Loading the kernel...
Generating kernel symbol table...

Kernel update request is scheduled.

Default kernel /stand/vmunix will be updated by
newly built kernel /stand/build/vmunix_test
at next system shutdown or startup time.

The above sounds like kmupdate executed implicitly. The /stand/vmunix is still the previous one, though. I'll go ahead reboot and tell you the result.

Jun

Re: Kernel rebuilding problem

Jun Zhang_4 — Tue, 07 Oct 2003 10:25:52 GMT

The system boot up fine, with the new kernel as /stand/vmunix.
I went back to follow the first method mentioned in Stan's message, and got
kmupdate: Specified file /stand/build/vmunix_test is not kernel file
again. What can you say?

Jun

Re: Kernel rebuilding problem

Dietmar Konermann — Tue, 07 Oct 2003 11:37:49 GMT

Jun,

the /usr/sbin/kmupdate command is only a shell script that can be easily trouble-shooted.

First create a backup of it:
# mv /usr/sbin/kmupdate /usr/sbin/kmupdate.org
# cp -p /usr/sbin/kmupdate.org /usr/sbin/kmupdate

Then edit the script and place a "set -x" just at the beginning of the shell function "check_kernel_image". The next kmupdate run should give you more information.

I suspect that kmupdate fails to find some important kernel symbols using nm(1).

The next step would be to check the result of the nm command in question. Should look like this:

# nm -pghN /stand/build/vmunix_test |grep -e rootdev -e bdevsw -e cdevsw
0008073688 D bdevsw
0008070040 D bdevsw_shadow
0008058816 D cdevsw
0008045552 D cdevsw_shadow
0008650960 D rootdev
0009448336 B mod_bdevsw_lock
0009448352 B mod_cdevsw_lock
0008355736 D cdevsw_lkinfo
0008355720 D bdevsw_lkinfo

Don't forget to restore the original file:

# mv /usr/sbin/kmupdate.org /usr/sbin/kmupdate

Best regards...
Dietmar.

Re: Kernel rebuilding problem

Jun Zhang_4 — Tue, 07 Oct 2003 15:48:52 GMT

Dietmar,
The nm command didn't give me anything beside the coming back of the shell promt. Running kmupdate with sh -x gave me the following the lines below.

Jun

# kmupdate
+ umask 022
+ PATH=/usr/local/bin:/opt/perl/bin:/usr/sbin:/usr/bin:/usr/ccs/bin:/usr/contrib
/bin:/opt/nettladm/bin:/opt/fc/bin:/opt/fcms/bin:/opt/upgrade/bin:/opt/pd/bin:/u
sr/bin/X11:/usr/contrib/bin/X11:/opt/hparray/bin:/opt/ignite/bin:/opt/resmon/bin
:/usr/sbin/diag/contrib:/opt/pred/bin:/opt/perf/bin:/opt/hpnpl//bin:/sbin:/opt/u
ltplus/bin:/opt/gnuplot/bin/X11:/usr/sbin:/usr/bin:/sbin
+ ROOT=
+ KMUPDATE=kmupdate
+ KMADMIN=kmadmin
+ KMMODREG=kmmodreg
+ KMTYPEINIT=kmtypeinit
+ KMPATH=kmpath
+ STAND=/stand
+ BUILD=/stand/build
+ CONF=/usr/conf
+ TMP=/tmp
+ KERN_DEF=/stand/vmunix
+ KERN_PREV=/stand/vmunix.prev
+ KERN_TEST=/stand/build/vmunix_test
+ KM_D=/usr/conf/km.d
+ KMC_DEF=/stand/dlkm
+ + kmc_path /stand/vmunix.prev
KMC_PREV=/stand/dlkm.vmunix.prev
+ + kmpath -c
+ 2> /dev/null
KMC=/stand/dlkm
+ [ 0 -ne 0 ]
+ MOD_D=/stand/dlkm/mod.d
+ MOD_BLD_D=/stand/dlkm/mod_bld.d
+ SYSTEM_D=/stand/dlkm/system.d
+ NODE_D=/stand/dlkm/node.d
+ UPDATE_UX_FILE=/stand/.update_ux
+ UPDATE_MOD_FILE=/stand/dlkm/.update_mod
+ UPDATE_MODS=
+ IMMEDIATE_MODS=
+ ACTIVATE_MODS=
+ ENABLED_MODS=
+ ASYNC_MODS=
+ UNLOADED_MODS=
+ SUCCESS=0
+ ERROR=1
+ cmd_err=0
+ first_msg=1
+ WORK_FILE=/tmp/.km_work5070
+ LOCK_FILE=/tmp/.kmupdate
+ mflag=0
+ iflag=0
+ aflag=0
+ kflag=0
+ typeset -i argcnt=0
+ MVsrc=mv
+ OS_VIRSION_UP=
+ getopts :M:iak OPT
+ (( argcnt=OPTIND-1 ))
+ [ 0 -gt 0 ]
+ shift 0
+ [ 0 -eq 0 ]
+ [ 0 -eq 1 ]
+ [ 0 -eq 1 ]
+ [ 0 -eq 1 ]
+ [ 0 -eq 0 ]
+ KERN_src=/stand/build/vmunix_test
+ trap 1 2 3 15
+ lock_me
+ [ 0 -ne 0 ]
+ [ 0 -eq 0 ]
+ update_kernel
kmupdate: Specified file /stand/build/vmunix_test is not kernel file.
+ [ 1 -ne 0 ]
+ unlock_me
+ exit 1

Re: Kernel rebuilding problem

Dietmar Konermann — Tue, 07 Oct 2003 16:49:57 GMT

Jun,

just have a look at the nm executable. Maybe it'corrupted somehow? Or truncated? What's the result of:

# what $(whence nm)
# ll $(whence nm)

Best regards...
Dietmar.

Re: Kernel rebuilding problem

Jun Zhang_4 — Wed, 08 Oct 2003 10:47:56 GMT

what /usr/local/bin/nm
(blank)
ll /usr/local/bin/nm
-rwxr-xr-x 2 root sys 135168 May 31 15:51 /usr/local/bin/nm
file /usr/local/bin/nm
/usr/local/bin/nm: PA-RISC1.1 shared executable dynamically linked

Jun

Re: Kernel rebuilding problem

Dietmar Konermann — Thu, 09 Oct 2003 01:43:50 GMT

Well, obviously your PATH includes /usr/local/bin before /bin, so you seem not to use the genuine HP-UX nm command.

This is the result from my box:

$ what $(whence nm)
/bin/nm:
HP aC++ B3910B A.03.30 Classic Iostream Library
HP aC++ B3910B A.03.30 Language Support Library
nm.cat: $Revision: 1.0 $
92453-07 linker command s800.sgs nm PA64 B.11.32 REL 020412

ll $(whence nm)
lr-xr-xr-t 1 root sys 15 Feb 25 1999 /bin/nm@ -> /usr/ccs/bin/nm

Please check what happens if you include /bin in yout PATH _before_ /usr/local/bin.

Best regards...
Dietmar.

Re: Kernel rebuilding problem

Norman_21 — Thu, 09 Oct 2003 02:07:12 GMT

Jun,

Download and install the following patch: PHCO_24285 awk(1) patch

Does rc.log have the following:

Update kernel and loadable modules
Output from "/sbin/rc1.d/S110kmbuild start":
----------------------------
ERROR: Cannot find the newly built kernel function set directory
"//dlkm.vmunix_test".
EXIT CODE: 1
"/sbin/rc1.d/S110kmbuild start" FAILED

Please keep us updated.
Thanks

Re: Kernel rebuilding problem

Dietmar Konermann — Thu, 09 Oct 2003 02:38:51 GMT

Jun,
don't bother with awk... nm is your problem.