problem with UMASS

[Bernd Walter]

On Fri, Jun 13, 2003 at 05:45:12PM +0200, Antoine Jacoutot wrote:
> Hi ! 
>  
> I'm using a USB adapter to plug a HDD into my FreeBSD-4.8 box. 
> If I boot with the device pluged-in, it works fine, but if I plug it in after 
> boot or unplug then replug it, it doesn't work anymore (I get timeout errors). 
> Here is some information about this device: 
>  
> from dmesg.boot: 
> umass0: QTS USB 2.0 ATAPI Bridge, rev 2.00/11.00, addr 2 
> da0 at umass-sim0 bus 0 target 0 lun 0 
> da0: <IC35L120 AVV207-0 V24O> Fixed Direct Access SCSI-0 device 
> da0: 650KB/s transfers 
> da0: 117800MB (241254720 512 byte sectors: 64H 32S/T 52264C) 
>  
> from /var/log/messages: 
> srv01 /kernel: (da0:umass-sim0:0:0:0): READ(6)/WRITE(6) not supported, 
> increasing minimum_cmd_size to 10. 
>  
> Someone told me to try adding the device to da_quirk_table in 
> src/sys/cam/scsi/scsi_da.c and recompiling, but I'm not sure how to add the 
> thing. 
> Any help would be greatly appreciated. 

Your device doesn't support 6 byte commands and the kernel switches
to 10 byte alternatives.
Where is your problem?
Is it just because the kernel told you what he does?

-- 
B.Walter                   BWCT                http://www.bwct.de
ticso at bwct.de                                  info at bwct.de