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Date:      Tue, 10 Feb 2015 15:06:42 +0100
From:      Hans Petter Selasky <hps@selasky.org>
To:        gljennjohn@gmail.com
Cc:        usb@freebsd.org, John Baldwin <jhb@freebsd.org>
Subject:   Re: r276717 causes problems
Message-ID:  <54DA1072.1010607@selasky.org>
In-Reply-To: <20150210100628.17c24ac2@ernst.home>
References:  <20150209183648.7825eee5@ernst.home>	<54D92612.6000207@selasky.org>	<4020134.66atlK9cJ0@ralph.baldwin.cx>	<54D92B40.10907@selasky.org> <20150210100628.17c24ac2@ernst.home>

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On 02/10/15 10:06, Gary Jennejohn wrote:
> On Mon, 09 Feb 2015 22:48:48 +0100
> Hans Petter Selasky <hps@selasky.org> wrote:
>
> Hans,
>
>> Can you test this change:
>> https://svnweb.freebsd.org/changeset/base/278477
>>
>
> Thanks, but it doesn't help.  I updated to 278499.
>
> Here's the relevant dmesg output using the new kernel:
>
> Feb 10 09:45:20 ernst kernel: ugen0.4: <vendor 0x152d> at usbus0
> Feb 10 09:45:20 ernst kernel: umass0: <vendor 0x152d product 0x0539, class 0/0, rev 3.00/28.03, addr 3> on usbus0
> Feb 10 09:45:20 ernst kernel: (probe0:umass-sim0:0:0:0): REPORT LUNS. CDB: a0 00 00 00 00 00 00 00 00 10 00 00
> Feb 10 09:45:20 ernst kernel: (probe0:umass-sim0:0:0:0): CAM status: SCSI Status Error
> Feb 10 09:45:20 ernst kernel: (probe0:umass-sim0:0:0:0): SCSI status: Check Condition
> Feb 10 09:45:20 ernst kernel: (probe0:umass-sim0:0:0:0): SCSI sense: ILLEGAL REQUEST asc:20,0 (Invalid command operation code)
> Feb 10 09:45:20 ernst kernel: (probe0:umass-sim0:0:0:0): Error 22, Unretryable error
> Feb 10 09:45:20 ernst kernel: da0 at umass-sim0 bus 0 scbus8 target 0 lun 0
> Feb 10 09:45:20 ernst kernel: da0: <ST320006 41AS 0X03> Fixed Direct Access SCSI-6 device
> Feb 10 09:45:20 ernst kernel: da0: Serial Number
> Feb 10 09:45:20 ernst kernel: da0: 400.000MB/s transfers
> Feb 10 09:45:20 ernst kernel: da0: 1907729MB (3907029168 512 byte sectors: 255H 63S/T 243201C)
> Feb 10 09:45:20 ernst kernel: da0: quirks=0x2<NO_6_BYTE>
>
> Note that the vendor/product strings are missing.
>
> I'm not certain whether the failure of REPORT LUNS has anything
> to do with my problem, but it seems like a failed SCSI command
> shouldn't prevent enumerating the disks in the enclosure.
>
> When the enumeration succeeds I always see da0, da1 and da2.
>
> Note that I tried a slightly older HEAD (from yesterday, so it
> already had 278477 in it) with dma_bits forced to 32 and the
> enumeration also failed.  So, there's more to my problem than
> just the DMA width.  There have been so many changes to CAM
> lately that the cause may lie there.
>

Hi,

Could you run:

usbdump -i usbusX -vvv -s 65535 -f Y

In the failing and working case?

That would reveal what is actually going on in the CAM and USB layers.

Thank you!

--HPS



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