From owner-freebsd-usb@FreeBSD.ORG  Wed Feb 13 02:17:47 2008
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Date: Wed, 13 Feb 2008 02:17:27 +0000
From: Gary Palmer <gpalmer@freebsd.org>
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To: Ben Stuyts <ben@altesco.nl>
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Cc: freebsd-usb@freebsd.org
Subject: Re: Panic on connecting external harddrive
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Ben Stuyts wrote:
> Hi Gary,
>
> On 12 Feb 2008, at 23:13, Gary Palmer wrote:
>
>> On Tue, Feb 12, 2008 at 07:15:21PM +0100, Ben Stuyts wrote:
>>> I have a consistent panic when I connect a 2.5" LaCie 250 GB drive to
>>> a SuperMicro 6015P-TR. This server is running amd64 with ZFS. Not
>>> being able to connect external harddrives is kind of a show stopper
>>> for putting this server into production.
>>>
>> Has anyone pointed you at
>>
>> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html 
>>
>
> No, but I've read about it. I can supply a kernel dump if that helps.

Ben,

You might get someone who knows the USB stack to spot a problem if you 
are able to supply a full backtrace with variables and line numbers for 
the functions.  If you feel the need to file a PR, that level of 
information will be required.

Regards,

Gary

P.S. I am not a USB guru, just trying to help