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Date: Fri, 17 Apr 2009 16:23:25 -0600
From: Scott Long <scottl@samsco.org>
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To: "Greg 'groggy' Lehey" <grog@freebsd.org>
References: <49E895CB.2040407@lissyara.su>
	<20090417213125.GI13564@dereel.lemis.com>
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Cc: Alex Keda <admin@lissyara.su>, freebsd-current@freebsd.org
Subject: Re: new usb stack - boot problem from usb hdd
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Greg 'groggy' Lehey wrote:
> On Friday, 17 April 2009 at 18:44:27 +0400, Alex Keda wrote:
>> After boot, before mount, disk da0 lost, or some partition
>> lost/uninitialised
>>
>> ...
>> umass0:0:0:-1: Attached to scbus0
>> da0 at umass-sim0 bus 0 target 0 lun 0
>> da0: <Hitachi HTS541680J9SA00 > Fixed Direct Access SCSI-2 device
>> da0: 40.000MB/s transfers
>> da0: 76319MB (156301488 512 byte sectors: 255H 63S/T 9729C)
>> Trying to mount root from ufs:/dev/da0s1a
>>
>> Manual root filesystem specification:
>>  <fstype>:<device>  Mount <device> using filesystem <fstype>
>>                       eg. ufs:da0s1a
>>  ?                  List valid disk boot devices
>>  <empty line>       Abort manual input
> 
> FWIW, I'm experiencing a similar problem with a USB stick.  I get an
> error 2 on the device entry (also /dev/da0s1a), followed by a panic
> with an incomplete stack backtrace.  I'm going to try remote debugging
> to get more information; watch this space.
> 

Have you followed the rest of this thread at all and seen the candidate
patch and subsequent verification??

Scott