setting usb disc to da1

[Bruce Meier]

Daniel O'Connor wrote:
> On 13/05/2011, at 7:08, Thomas Krause wrote:
>    
>> I've plugged a USB disc to a FreeBSD System and it's dedected as da1:
>>
>> da1:<Samsung G3 Station>  Fixed Direct Access SCSI-2 device
>>
>> But when rebooting the machine, it becomes da0 and I cannot boot the
>> system. What's the trick to set the USB disc to da1 permanent?
>>      
> You can, to some degree, wire the device with..
> hint.scbus.0.at="umass-sim0"
> hint.da0.at="scbus0"
>
> However I would recommend using GPT IDs, UFS IDs or GEOM labels in fstab so the underlying device name is irrelevant.
>
> --
> Daniel O'Connor software and network engineer
> for Genesis Software - http://www.gsoft.com.au
> "The nice thing about standards is that there
> are so many of them to choose from."
>    -- Andrew Tanenbaum
> GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
>
>
>
>
>
>
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>    

# camcontrol devlist
<Lexar RW047SDHC Reader 0100>      at scbus0 target 0 lun 0 (da1,pass1)
<Novatel MMC Storage 2.31>         at scbus1 target 0 lun 0 (da0,pass0)


$ dmesg | grep da
da0 at umass-sim1 bus 1 scbus1 target 0 lun 0
da0: <Novatel MMC Storage 2.31> Removable Direct Access SCSI-2 device
da0: 1.000MB/s transfers
da0: Attempt to query device size failed: NOT READY, Medium not present
da1 at umass-sim0 bus 0 scbus0 target 0 lun 0
da1: <Lexar RW047SDHC Reader 0100> Removable Direct Access SCSI-0 device
da1: 40.000MB/s transfers
da1: 3900MB (7987200 512 byte sectors: 255H 63S/T 497C)


Added the following to /boot/loader.conf:

hint.scbus.0.at="da0"
hint.scbus.0.bus="0"
hint.da.0.at="scbus0"
hint.da.0.target="0"
hint.da.0.unit="0"
hint.scbus.1.bus="umass-sim0"
hint.da.1.at="scbus1"
hint.da.1.target="0"
hint.da.1.unit="0"

This seems to work.  I have rebooted 4 times and the devices are mounted 
the same.