Dell SAS5 Performance Issue

[Richard Tector]

Bjoern A. Zeeb wrote:
> On Sun, 1 Apr 2007, Richard Tector wrote:
>> A perhaps unrealted issue:
>> I've noticed a large number of messages being produced by the mpt 
>> driver after boot occuring approximately every 90 seconds.
>>
>> Apr  1 15:51:43 moses kernel: mpt0: mpt_cam_event: 0x14
>> Apr  1 15:51:43 moses kernel: mpt0: Unhandled Event Notify Frame. 
>> Event 0x14 (ACK not required).
>> Apr  1 15:53:19 moses kernel: mpt0: mpt_cam_event: 0x14
>> Apr  1 15:53:19 moses kernel: mpt0: Unhandled Event Notify Frame. 
>> Event 0x14 (ACK not required).
>>
>> Any thoughts anyone? Is there any way to find out what the events 
>> correspond to?
> IMHO 0x14 is "resync complete". Dud you have a degraded RAID-1?
>
> Can you tell me what
>
> Index: mpt_cam.c
> ===================================================================
> RCS file: /shared/mirror/FreeBSD/r/ncvs/src/sys/dev/mpt/mpt_cam.c,v
> retrieving revision 1.52
> diff -u -p -r1.52 mpt_cam.c
> --- mpt_cam.c   11 Mar 2007 01:54:59 -0000      1.52
> +++ mpt_cam.c   1 Apr 2007 16:54:27 -0000
> @@ -2236,6 +2236,10 @@ mpt_cam_event(struct mpt_softc *mpt, req
>                 CAMLOCK_2_MPTLOCK(mpt);
>                 break;
>         }
> +       case MPI_EVENT_IR_RESYNC_UPDATE:
> +               uint8_t resync = (data0 >> 16) & 0xff;
> +               mpt_prt(mpt, "IR resync update %d completed.", resync);
> +               break;
>         case MPI_EVENT_EVENT_CHANGE:
>         case MPI_EVENT_INTEGRATED_RAID:
>         case MPI_EVENT_SAS_DEVICE_STATUS_CHANGE:
>
> gives you; especially how far it counts up?
>
Now you come to mention it, I believe it was indeed the array rebuilding.

I'll try your patch and force a resync of the mirror tomorrow morning 
and report back with the output. Would be a useful feature to have. On a 
side note the array is now marked as Optimal in the BIOS so I assume the 
following messages, sent about 2 hours later, were various ways of 
saying "Complete"?

Apr  1 18:31:43 moses kernel: mpt0: mpt_cam_event: 0x14
Apr  1 18:31:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 
0x14 (ACK not required).
Apr  1 18:31:43 moses kernel: mpt0: mpt_cam_event: 0x21
Apr  1 18:31:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 
0x21 (ACK not required).
Apr  1 18:31:43 moses kernel: mpt0: mpt_cam_event: 0x21
Apr  1 18:31:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 
0x21 (ACK not required).
Apr  1 18:31:43 moses kernel: mpt0: mpt_cam_event: 0x15
Apr  1 18:31:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 
0x15 (ACK not required).
Apr  1 18:31:43 moses kernel: mpt0: mpt_cam_event: 0x21
Apr  1 18:31:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 
0x21 (ACK not required).
Apr  1 18:31:43 moses kernel: mpt0: mpt_cam_event: 0x21
Apr  1 18:31:43 moses kernel: mpt0: Unhandled Event Notify Frame. Event 
0x21 (ACK not required).


Thank you for your help,

Richard