Advice # 1 - drop asmlib and never use it. It is useless piece of software.
Linux have 'raw' which do the same but is standard component, not omee made
as asmlib.

Then repeat tests again.

----- Original Message -----
From: "Peter Santos" <psantos@(protected)>
To: <suse-oracle@(protected)>
Sent: Monday, April 30, 2007 12:15 PM
Subject: [suse-oracle] re: SEL 10 - Kernel 2.6.16.27.0.9 locks up


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> Folks,
> I'm trying to find out how to go about investigating an issue
> where our test server running 10.2.0.3 (x86_64) is locking up when we run
a
> few dd commands sequentially (dd if=/dev/zero of=/z0/test/testthere2 bs=4k
count=5000000) .. where /z0 was
> just some local storage.
>
> He did a kernel upgrade to version 2.6.16.27.0.9 a couple of weeks ago. We
then installed
> the following ASM packages on top of that.
>
> oracleasmlib-2.0.2-1.x86_64.rpm
> oracleasm-support-2.0.3-1.x86_64.rpm
> oracleasm-2.6.16.27-0.9-smp-2.0.3-1.x86_64.rpm
>
> We are using SEL 10 + 10.2.0.3 + ASM via ASMLib.
>
> At random intervals the machine would crash with no information in the
/var/log/messages. We ran a memory test
> on it and it was fine. Finally our SA recompiled the latest kernel from
source ( 2.6.21-smp) and after a number
> of "dd" tests ,the machine did NOT crash. With the latest kernel from
source, ASM was not started because of
> version mismatch!
>
> ASM may or may not be the problem, but what is the best way to
troubleshoot this?
>
> The machine has the following spec:
> - Dell 6800 with 4 dual core CPUs (Intel(R) Xeon(TM) CPU 2.60GHz )
> - Storage is DS4400
> - Storage Driver: Fibre Channel: QLogic Corp. QLA2312 Fibre Channel
Adapter (rev 02)
>
>
> - -peter
>
>
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