topic Re: Reboot After Panic.! in Operating System - HP-UX

Reboot After Panic.!

Ivan_86 — Fri, 28 Oct 2005 11:14:40 GMT

Hi to all !!

We have, N40005 11.00 the system crash, but in the log's no exist register of the problem.

The sysmtem generated one directory crash and in the /etc/shutdownlog apper this entri

01:39 Fri Oct 28 2005. Reboot after panic: An invalid dirty buffer!

Sombody have idea of the problem

Thanks to all!

Re: Reboot After Panic.!

Hanwant Verma_1 — Fri, 28 Oct 2005 11:18:18 GMT

What was the last change you did on your system. Did you reboot the server after that change?

Re: Reboot After Panic.!

A. Clay Stephenson — Fri, 28 Oct 2005 11:19:49 GMT

PHKL_28105 addresses your problem.

Re: Reboot After Panic.!

Geoff Wild — Fri, 28 Oct 2005 11:21:37 GMT

Possibly could be vxfs patches - make sure you are up to date in your patches...

Rgds...Geoff

Re: Reboot After Panic.!

Ivan_86 — Fri, 28 Oct 2005 11:29:03 GMT

Hi, thanks for yours response,

No the system no have changes more less 3 0 4 months

Re: Reboot After Panic.!

Granite — Fri, 28 Oct 2005 11:48:26 GMT

Hi Ivan,

For a panic reboot, you can better scrutinize the crash logs generated. It will be inside /var/adm/crash directory.The latest one will be crash.0.
Also, refer the /var/tombstones/ts* files. Tombstones can screen you if hardware issues.
Unless if the servers goes down gracefully /etc/shutdownlog cant address you exactly who and why it has happened.

regds,Granite

Re: Reboot After Panic.!

Alex Glennie — Fri, 28 Oct 2005 15:06:34 GMT

No points please !

but your question has already been answered correctly from the patch documention :

Symptoms:
PHKL_28105:
( SR:8606274037 CR:JAGae38116 )
A panic occurs when accessing an invalid dirty buffer in the
buffer cache. This can result in a couple of different
panics. Two types of panics seen so far are "panic: An
invalid dirty buffer!" and a Data Page Fault in bwrite().
A sample stack trace is given below.

panic: An invalid dirty buffer!

Re: Reboot After Panic.!

Bharat Katkar — Fri, 28 Oct 2005 15:12:50 GMT

Hi Evan

The cause of panic is breifly given in your shutdownlog file.
01:39 Fri Oct 28 2005. Reboot after panic: An invalid dirty buffer!

An invalid dirty buffer caused your system to reboot. As already mentioned try applying the patch and monitor your system.

Regards,

Re: Reboot After Panic.!

Ivan_86 — Fri, 28 Oct 2005 16:08:12 GMT

thanks for all..!!

We are work in the plan for install this patches..!!!

Rgds.!