Reset failure looks particularly evil.  Could be a driver bug.  Could be a 
broken hba.  Or both. 

Sent from my iPhone

> On Nov 27, 2014, at 8:43 AM, Keith Wesolowski via smartos-discuss 
> <[email protected]> wrote:
> 
>> On Thu, Nov 27, 2014 at 12:20:35PM +0100, Blake Irvin via smartos-discuss 
>> wrote:
>> 
>> There hopefully is a core file on your dump device.  You should see if you 
>> can coordinate sending that file to Joyent for analysis.  The core file will 
>> contain some sensitive information, so don’t post it publicly.  See `man 
>> coreadm` for more on dump devices and coredump settings in SmartOS.
> 
> You probably want dumpadm(1m) for this, actually.  That, and
> savecore(1m).  Crash dumps should already be enabled by the OS setup
> utility; dumpadm should confirm that for you.
> 
> As for the original problem, I'm not sure.  You clearly are having a
> problem between your SAS HBA and one of the targets; you can try to
> decode those codes using the information in the mpt_sas header files.
> As a result of that problem, the HBA's I/O controller was reset.  I do
> not know why or how that induced a panic; hopefully that information can
> be gleaned from the crash dump.  If you want to debug it yourself, run
> savecore on it and then mdb <number>, where the number is the
> highest-numbered crash dump present (i.e., vmcore.3 -> mdb 3).
> 
> Also, if it's the same target every time this happens, you probably have
> a bad disk or possibly a bad disk bay.  Replacing that device may work
> around this by avoiding the trigger for the bug (it's still a bug,
> though).
> 
>>> On Nov 27, 2014, at 12:17 PM, Len Weincier via smartos-discuss 
>>> <[email protected]> wrote:
>>> 
>>> Hi
>>> 
>>> We have a host with some decent supermicro kit that has spontaneously 
>>> rebooted twice in the last week under normal conditions. We see the 
>>> following in the logs :
>>> 
>>> 2014-11-22T01:43:09.000Z    c4a scsi: [ID 107833 kern.warning] WARNING: 
>>> /pci@0,0/pci8086,e08@3/pci15d9,400@0 (mpt_sas0):#012#011Disconnected 
>>> command timeout for target 19 w5000c50067158c6f.
>>> 2014-11-22T01:43:09.000Z    c4a scsi: [ID 107833 kern.notice] 
>>> /pci@0,0/pci8086,e08@3/pci15d9,400@0 (mpt_sas0):#012#011Timeout of 10 
>>> seconds expired with 1 commands on target 19 lun 0.
>>> 2014-11-22T01:43:10.000Z    c4a scsi: [ID 243001 kern.warning] WARNING: 
>>> /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011mptsas_handle_event_sync: IOCStatus=0x8000, 
>>> IOCLogInfo=0x31170000
>>> 2014-11-22T01:43:13.000Z    c4a scsi: [ID 107833 kern.warning] WARNING: 
>>> /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011mptsas_check_task_mgt: Task 0x3 failed. IOCStatus=0x4a 
>>> IOCLogInfo=0x0 target=19#012
>>> 2014-11-22T01:43:13.000Z    c4a scsi: [ID 365881 kern.info 
>>> <http://kern.info/>] /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011Log info 0x31140000 received for target 19 
>>> w5000c50067158c6f.#012#011scsi_status=0x0, ioc_status=0x8048, scsi_state=0xc
>>> 2014-11-22T01:43:13.000Z    c4a scsi: [ID 107833 kern.warning] WARNING: 
>>> /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011mptsas_ioc_task_management failed try to reset ioc to 
>>> recovery!
>>> 2014-11-22T01:43:14.000Z    c4a scsi: [ID 365881 kern.info 
>>> <http://kern.info/>] /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011MPT Firmware version v16.0.1.0 (SAS2008)
>>> 2014-11-22T01:43:14.000Z    c4a scsi: [ID 365881 kern.info 
>>> <http://kern.info/>] /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011mpt0 MPI Version 0x200
>>> 2014-11-22T01:43:15.000Z    c4a scsi: [ID 365881 kern.info 
>>> <http://kern.info/>] /pci@0,0/pci8086,e08@3/pci15d9,400@0 
>>> (mpt_sas0):#012#011mpt0: IOC Operational.
>>> 
>>> The next entry in the logs is the machine starting up.
>>> 
>>> This happened again this morning. 
>>> 
>>> Any ideas on what might be happening ?
>>> 
>>> Thanks
>>> Len
>>> 
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