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List:       freebsd-scsi
Subject:    Re: cam SCSI negotiation issues (mpt in that case), only 3.300MB/s transfers
From:       Harald Schmalzbauer <h.schmalzbauer () omnilan ! de>
Date:       2012-12-08 13:23:32
Message-ID: 50C33F54.1020304 () omnilan ! de
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 schrieb Matthew Jacob am 06.12.2012 03:54 (localtime):
> On 12/5/2012 1:39 PM, Harald Schmalzbauer wrote:
>>   schrieb Harald Schmalzbauer am 05.12.2012 22:23 (localtime):
>>> kernel: IOC Status    SCSI: Data Underrun
>> Searching for this topic showd an 53c1030 errata fix:
>>
>> https://patchwork.kernel.org/patch/94223/
>>
>> Like you guessed, I can't make use of it, but probably someone else?
>>
>> Thanks,
>>
>> -Harry
>>
> I've had this known something about for about 18 months. I have lacked
> time to pursue it. I think I have a board and  a couple of targets
> still. The other system I had for testing this on, an AMD Hammer, died
> a couple of months ago. Just no time to work on it. If you keep
> annoying me I might get around to it.

I'd highly appreciate if you could find some time to fix the mpt 53C1030
negotiation.
I've never had problems with mpt, so I haven't wasted a thought about
checking compatiblity before I bought 3 LSI20320IE...
Unfortunately I'm now in production with my choice and I worry about
trashing my DAT72 because I can't keep it streaming. I checked the same
setup in a different (WinXP) Guest-VM and it resulted in a 5,5MB/s stream=
=2E

If I can help, please let me know. I could setup either a VM-Guest with
the 20320IE passed through and an DAT attached, or a real box with the
same components. Both with extra serial remote-console.

>
> hw.mpt.X.role means target/initiatiator/both/none.
>

I guess it's starting with 0, so my 20320IE has role "none". Is that
just a cosmetic bug?

Thanks,

-Harry



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