Skip site navigation (1)Skip section navigation (2) 
Date:      Tue, 11 Jan 2005 12:09:25 +1030
From:      "Wilkinson, Alex" <alex.wilkinson@dsto.defence.gov.au>
To:        usb@freebsd.org
Subject:   Re: [USB] JetFlash TS1GJF2B 2.00 Attempt to query devicesizefailed: UNIT ATTENTION
Message-ID:  <20050111013925.GD32601@squash.dsto.defence.gov.au>
In-Reply-To: <20050111000956.GB32601@squash.dsto.defence.gov.au>
References:  <20050107064748.GE18554@squash.dsto.defence.gov.au>  <41DE4E52.2040301@elischer.org>  <20050111000956.GB32601@squash.dsto.defence.gov.au>
next in thread | previous in thread | raw e-mail | index | archive | help 
    0n Tue, Jan 11, 2005 at 10:39:56AM +1030, Wilkinson, Alex wrote: 

    >    >>    (da0:umass-sim0:0:0:0): Retrying Command (per Sense Data)
    >    >>    (da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0 
    >    >>    (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
    >    >>    (da0:umass-sim0:0:0:0): SCSI Status: Check Condition
    >    >>    (da0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
    >    >>    (da0:umass-sim0:0:0:0): Not ready to ready change, medium may have 
    >    >>    changed
    >    >>    (da0:umass-sim0:0:0:0): Retrying Command (per Sense Data)

Okay, I'm trying to make sense of the aforementioned debug output.

1. (da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0
   (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error

   I'm suspecting that this means that the READ CAPACITY command
   failed, therefore we are unable to determine the device's 
   physical parameters.

2. (da0:umass-sim0:0:0:0): SCSI Status: Check Condition

   Looks like we are waiting to for the device to become ready to be
   accessed.

3. (da0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
   (da0:umass-sim0:0:0:0): Not ready to ready change, medium may have changed

   This 'Additional Sense Code' seems to be where it fails. Looking at
   the RBC specs we should see an ASC/ASCQ of 'NEW MEDIA READY FOR
   ACCESS'. However, we don't.

This is as far as I can go without having my hand held. I would dearly
like to get this UMASS device working. 

Can any USB wizards please suggest quirks etc that could result in a
solution.

Thanks

 - Alex

Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050111013925.GD32601>