I think that TMC Research is the company that designed the
Supermicro-branded controller card that has the Marvell SATA
controller chip on it.  Googling around I see connections between
Supermicro and TMC.

This is the card:

http://www.supermicro.com/products/accessories/addon/AOC-SAT2-MV8.cfm

On Wed, Mar 11, 2009 at 3:08 PM, Remco Lengers <re...@lengers.com> wrote:
> Something is not right in the IO space. The messages talk about
>
> vendor ID = 11AB
>
> 0x11AB  Marvell Semiconductor
>
> TMC Research
>
> Vendor Id: 0x1030
> Short Name: TMC
>
> Does "fmdump -eV" give any clue when the box comes back up?
>
> ..Remco
>
>
> Blake wrote:
>>
>> I'm attaching a screenshot of the console just before reboot.  The
>> dump doesn't seem to be working, or savecore isn't working.
>>
>> On Wed, Mar 11, 2009 at 11:33 AM, Blake <blake.ir...@gmail.com> wrote:
>>>
>>> I'm working on testing this some more by doing a savecore -L right
>>> after I start the copy.
>>>
>>> BTW, I'm copying to a raidz2 of only 5 disks, not 16 (the chassis
>>> supports 16, but isn't fully populated).
>>>
>>> So far as I know, there is no spinup happening - these are not RAID
>>> controllers, just dumb SATA JBOD controllers, so I don't think they
>>> control drive spin in any particular way.  Correct me if I'm wrong, of
>>> course.
>>>
>>>
>>>
>>> On Wed, Mar 11, 2009 at 11:23 AM, Marc Bevand <m.bev...@gmail.com> wrote:
>>>>
>>>> The copy operation will make all the disks start seeking at the same
>>>> time and
>>>> will make your CPU activity jump to a significant percentage to compute
>>>> the
>>>> ZFS checksum and RAIDZ parity. I think you could be overloading your PSU
>>>> because of the sudden increase in power consumption...
>>>>
>>>> However if you are *not* using SATA staggered spin-up, then the above
>>>> theory
>>>> is unlikely because spinning up consumes much more power than when
>>>> seeking.
>>>> So, in a sense, a successful boot proves your PSU is powerful enough.
>>>>
>>>> Trying reproducing the problem by copying data on a smaller number of
>>>> disks.
>>>> You tried 2 and 16. Try 8.
>>>>
>>>> -marc
>>>>
>>>> _______________________________________________
>>>> zfs-discuss mailing list
>>>> zfs-discuss@opensolaris.org
>>>> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>>>>
>>>
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>>>
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