[OpenIndiana-discuss] Spontaneous server reboots

[Martyn Klassen]

In case someone else has stability issues with OI using an LSI 9240-4i controller with the imr_sas drivers (version 3.03) in the future. I have traced my stability issues to the controller. Reflashing the controller to IT mode (following instructions at http://www.servethehome.com/ibm-serveraid-m1015-part-4/) which then uses the builtin mpt_sas drivers seems to have cured the spontaneous server reboots.

Martyn

On 2012-03-19, at 14:22 , openindiana-discuss-request at openindiana.org wrote:

> Message: 1
> Date: Mon, 19 Mar 2012 09:08:17 -0400
> From: Martyn Klassen <mklassen at imaging.robarts.ca>
> To: openindiana-discuss at openindiana.org
> Subject: [OpenIndiana-discuss] Spontaneous server reboots
> Message-ID: <AB96AB07-1577-4750-ACC4-D6663AED1587 at imaging.robarts.ca>
> Content-Type: text/plain; charset=us-ascii
> 
> I have an OI server running oi_151a2 that is experiencing random reboots. I cannot seem to find any indication of why they are occurring in any of the logs, and there are no core dumps even though I have core dumps enabled.
> 
> # coreadm
>     global core file pattern: /var/cores/cor.%f.%p
>     global core file content: default
>       init core file pattern: core
>       init core file content: default
>            global core dumps: enabled
>       per-process core dumps: enabled
>      global setid core dumps: disabled
> per-process setid core dumps: disabled
>     global core dump logging: disabled
> 
> I suspect it may be related to the disk system as my observation is that the reboots tend to occur more frequently when the system is under heavy io load, but am not sure how to go about diagnosing the problem without any log information. Any suggestions on how to get more diagnostic information would be appreciated?
> 
> The system is an Intel Server Board S5520UR in a SR2612URR chassis. The main disk pool uses an LSI MegaRAID SAS 9240-4i controller and consists of twelve (12) 3TB Constellation ES.2 drives in a RAID Z3 configuration and using a DDRDrive for the zlog. The system/root pool is two Intel 160GB SSD disks in a mirror configuration.
> 
> Martyn Klassen