Subject: Re: ahc & mpt scsi timeouts
To: Manuel Bouyer <>
From: Tracy Di Marco White <>
List: tech-kern
Date: 05/27/2006 02:38:07
In message <>, Manuel Bouyer writes:
>On Fri, May 26, 2006 at 11:36:43PM -0500, Tracy Di Marco White wrote:
>> The mpt timeouts only prevent me from booting, and if I reboot
>> it, possibly a few times, it'll eventually come up.  They look
>> like:
>>   probe(mpt0:0:0:0): command timeout
>>   mpt0: timeout on request index = 0xfe, seq = 0x00000068
>>   mpt0: Status 0x80000000, Mask 0x00000001, Doorbell 0x24000000
>>   mpt0: request state: On Chip
>>   probe(mpt0:0:1:0): command timeout
>> and are repeated over & over until I drop to the debugger
>> to reboot, or it finally drops to single user mode, unable
>> to mount the spool disks and I reboot it.  These don't happen
>> in any consistent fashion.
>> As for the adaptec timeouts, I don't see them in any consistent
>> fashion either.  I believe they're usually on commands where a
>> tape is being mounted for write.
>> ahc4:SCB 0xe - timed out
>Do you always see the timeout on mpt0 and ahc4, or can it occurs with any
>adapter ?
>I notice that mpt0 and ahc4 share interrupt with the PERC

The adaptec timeouts are on any adapter.  I don't recall on the mpt
timeouts, and my console logs don't go back far enough to help.