topic Error Messages in Operating System - HP-UX

Error Messages

Waqar Razi — Wed, 29 Oct 2008 11:46:49 GMT

I am getting following error messages in syslog since yesterday evening, Can some one please guide me in this regard.

Oct 29 08:41:35 APPLE vmunix: DIAGNOSTIC SYSTEM WARNING:
Oct 29 08:41:35 APPLE vmunix: The diagnostic logging facility has started rece
iving excessive
Oct 29 08:41:35 APPLE vmunix: errors from the I/O subsystem. I/O error entrie
s will be lost
Oct 29 08:41:35 APPLE vmunix: until the cause of the excessive I/O logging is
corrected.
Oct 29 08:41:35 APPLE vmunix: If the DEMLOG daemon is not active,
Oct 29 08:41:40 APPLE vmunix: use the DIAGSYSTEM command
Oct 29 08:41:40 APPLE vmunix: in SYSDIAG to start it.
Oct 29 08:41:40 APPLE vmunix: If the DEMLOG daemon is active, use the LOGTOOL
utility in SYSDIAG
Oct 29 08:41:40 APPLE vmunix: to determine which I/O subsystem is logging exce
ssive errors.
Oct 29 08:41:40 APPLE vmunix: DIAGNOSTIC SYSTEM WARNING:
Oct 29 08:41:40 APPLE vmunix: The diagnostic logging facility is no longer rec
eiving excessive
Oct 29 08:41:40 APPLE vmunix: errors from the I/O subsystem. 3 I/O error entr
ies were lost.
Oct 29 08:41:40 APPLE vmunix: DIAGNOSTIC SYSTEM WARNING:
Oct 29 08:41:40 APPLE vmunix: The diagnostic logging facility has started rece
iving excessive
Oct 29 08:41:40 APPLE vmunix: errors from the I/O subsystem. I/O error entrie
s will be lost
Oct 29 08:41:40 APPLE vmunix: until the cause of the excessive I/O logging is
corrected.
Oct 29 08:41:40 APPLE vmunix: If the DEMLOG daemon is not active, use the DIAG
SYSTEM command
Oct 29 08:41:40 APPLE vmunix: in SYSDIAG to start it.
Oct 29 08:41:40 APPLE vmunix: If the DEMLOG daemon is active, use the LOGTOOL
utility in SYSDIAG
Oct 29 08:41:40 APPLE vmunix: to determine which I/O subsystem is logging exce
ssive errors.
Oct 29 08:41:40 APPLE vmunix: DIAGNOSTIC SYSTEM WARNING:
Oct 29 08:41:40 APPLE vmunix: The diagnostic logging facility is no longer rec
eiving excessive
Oct 29 08:41:40 APPLE vmunix: errors from the I/O subsystem. 3 I/O error entr
ies were lost.

Re: Error Messages

TTr — Wed, 29 Oct 2008 11:57:42 GMT

Looks like an I/O issue such as a failed disk or a bad connection. Did you lose any data? If not it could be a mirrored disk.
> Oct 29 08:41:40 APPLE vmunix: If the DEMLOG daemon is active, use the LOGTOOL
utility in SYSDIAG to determine which I/O subsystem is logging excessive errors.

Look in the logtool to find out where the errors are coming from or if you look through the errors in the syslog some more the exact error may be there as well. You should also check the volume groups and ioscan for any stale or missing disks that would point you to the source of the problem.

Re: Error Messages

Waqar Razi — Wed, 29 Oct 2008 12:19:37 GMT

How can I use the DIAGSYSTEM in SYSDIAG or logtool as indicated here. I have never used these utilities before.

Can any one help me in this

Re: Error Messages

Jaime Bolanos Rojas. — Wed, 29 Oct 2008 13:21:45 GMT

Wagar,

A quick search in dosc.hp.com revealed this document on how to use the logtool:

http://docs.hp.com/en/diag/logtool/lgt_startm.htm

Regards,

Jaime.

Re: Error Messages

IT_2007 — Wed, 29 Oct 2008 14:03:04 GMT

run the following
cstm
ru
select 2
then you would see following

-- Logtool Utility --
To View a Summary of Events in a Raw Log

1. Select a raw (unformatted) log file. (File Menu -> "Select Raw")
The current log file ends in ".cur", e.g. "log1.raw.cur".
You do not have to switch logs.

2. View the summary of the selected log file. (View Menu -> "Raw Summary")

To Format a Raw Log

1. Set the format filter for the types of entries you want to see.
(Filters Menu -> "Format"). To see all entries, skip this step.

2. Format the raw log file. (File Menu -> "Format Raw")

3. Display the formatted file. (View Menu -> "Formatted Log")

4. To further narrow the entries displayed, set a display filter.
(Filters Menu -> "Display" -> "Formatted")

For more information, use the on-line help (Help Menu -> "General help").

select either to view or save logfile.
To come out of logtool, "q" for quit.