topic shutdown core dump in Operating System - HP-UX

shutdown core dump

Shivkumar — Tue, 09 Aug 2005 00:19:35 GMT

If hpux 11i is automatically shutdown due to some reason; will it leave core dump ?

Thanks,
Shiv

Re: shutdown core dump

saju_2 — Tue, 09 Aug 2005 00:33:33 GMT

Hi

Look into /var/adm/crash and /var/tomstones directories will have information

regards
CS

Re: shutdown core dump

Thayanidhi — Tue, 09 Aug 2005 00:42:57 GMT

Hi,
Also check the /etc/shutdownlog
Reason for reboot is briefed here.

If there was power failure or similar issue (Power supply problem), the system won't do TOC.

Regds
TT

Re: shutdown core dump

Kurt Beyers. — Tue, 09 Aug 2005 00:54:31 GMT

Shiv,

A core dump will only occur if an abnormal shutdown of the server would occur.

A clean shutdown (manual or scheduled) won't cause a core dump of course.

best regards,
Kurt

Re: shutdown core dump

Rajesh SB — Tue, 09 Aug 2005 00:57:57 GMT

Hi,

Following steps are useful for debugging the crash/core dumps.HPUX Panic Analysis

HP-UX has its own to analyze scripts. This is what you need to do to run a panic analysis:

1.) cd /var/adm/crash/core.[n]
2.) zcat /usr/contrib/lib/Q4Lib.tar.Z | tar -xvf -
3.) gunzip vmunix
4.) /usr/contrib/bin/q4pxdb vmunix
5.) cp q4lib/sample.q4rc.pl ~/.q4rc.pl
6.) /usr/contrib/bin/q4 -p .
7.) include analyze.pl
8.) run Analyze AU > crash[n]_rpt.txt
9.) Refer the "crash[n]_rpt.txt" file for crash details.

Regards,
Rajesh

Re: shutdown core dump

Cem Tugrul — Tue, 09 Aug 2005 01:06:18 GMT

Shiv;
As an addition to other replies;

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=946077

Good Luck,

Re: shutdown core dump

Sreedhar Nathani — Tue, 09 Aug 2005 02:45:25 GMT

Hello Shiv,

HPUX will create crashdump in the following events
1. either during software panic /hardware panic(HPMC)
2. manual TOC initiated by user
3. Service Guard TOC

But all the above you will see a entry in the /etc/shutdownlog regarding the panic
which caused system reboot.

If you don't have any entry in the /etc/shutdownlog, but system is rebooted, then
only possible reasons are

1. Somebody run a shutdown/reboot using some wrapper scripts, cuasing shutdownlog not
to be updated
2. No shutdownlog in /etc directory

3. Due to some hardware problems(power) system got rebooted. That can be verified
from the hardware GSP logs

Hope this helps

Re: shutdown core dump

Mahesh Kumar Malik — Tue, 09 Aug 2005 04:05:51 GMT

Hi Shiv

Core dump will be created when system shutdown happens on account of abnormalities like Software, harware PANICs or Power failure. A graceful shutdown will not create core dump.

/etc/shutdownlog will provide info on type of shutdown

Regards
Mahesh