mpt problems. (Re: Dell hardware raid 0 (sas5ir) or gmirror?)

[Mark Saad]

Hello
    So the HP DL320G4 servers come with a similar LSI Logic SAS 
controller. In 6.2-RELEASE  was seeing the same issue;
The fix I found was a firmware update from HP HP Firmware Update 7.6.0 . 
After applied the mpt messages went away .
I beelive this is a bug in the LSI firmware more then the FreeBSD OS, as 
this controller has been very odd regardless of what os I am running on it.

Josef Karthauser wrote:
> On Sat, Jan 27, 2007 at 10:47:49PM +0000, Josef Karthauser wrote:
>> The error messages from mpt are attached in the file called 'messages'.
>> The kernel probe boot time log is attached as dmesg.log.
>>
> 
>> Jan 27 18:42:03 littoralis kernel: mpt0: QUEUE FULL EVENT: Bus 0x00 Target 0x01 Depth 121
>> Jan 27 18:44:01 littoralis kernel: mpt0: QUEUE FULL EVENT: Bus 0x00 Target 0x00 Depth 121
>> Jan 27 18:51:06 littoralis kernel: mpt0: request 0xca756328:48785 timed out for ccb 0xca8f0c00 (req->ccb 0xca8f0c00)
>> Jan 27 18:51:06 littoralis kernel: mpt0: attempting to abort req 0xca756328:48785 function 0
>> Jan 27 18:51:06 littoralis kernel: mpt0: request 0xca755c28:48786 timed out for ccb 0xcc213800 (req->ccb 0xcc213800)
> 
> An update for anyone who's following this thread.
> 
> At Matthew Jacob's suggestion I tweaked the 'camcontrol tags'
> settings for the drives, and with a particular choice of settings
> the problems goes away.
> 
> So, at boot time both drives (da0|1) report that they have 255 tag
> openings.  However you can see above in the logs that the mpt files
> when the depth gets to 121.  If I manually set the tags for the
> drives to anything 120 or above the drive controller complains under
> load, and one of the disks goes away.  If I get it to 119 the server
> runs all day without missing a beat.
> 
> Matt suggested quirking the drives to fix this.  I'm wondering though
> where it is that the mpt controller get the queue size of 121 from, and
> why the drives report 255 at boot time.  Is this because the control
> isn't mediating this information properly, or is there a bug in the
> controller firmware or driver?
> 
> Joe


-- 
Mark Saad
msaad at datapipe.com
DataPipe Managed UNIX Support