[LUG] Mounting USB external hard drive with same device every time?

[Rob Beard <rob@xxxxxxxxxxxxx>]

Hi folks,

I was hoping someone could help with something I am stuck on at the moment.

I am trying to set up a PC to automatically backup a couple of network 
shares to an identical pair of external USB hard drives.  The drives are 
pre-formatted as FAT32 (for compatibility with Windows).

The idea is that the drives are changed once or twice a week and I want 
to make sure that they automatically mount as the same device (say, 
/dev/sda) every time they are connected.

I have tried Google and I read up something about UDEV rules.  I have 
tried creating a rule and placing it in /etc/udev (I called it 
freecombackupdevice.rules) although when I reconnect the drive is is 
automatically mounted to /media/drive_label whereas I actually want it 
to mount to /mnt/backup.

Below is the copies of the freecombackupdevice.rules file and the output 
from udevinfo -a -p /sys/block/sdb

Just wondering if anyone could help?  I'd like to make it as idiot proof 
as possible so anyone can just plug the drive in and have it mount in 
the right places.

Ta,

Rob


---- freecombackupdevice.rules
BUS=="usb", SYSFS{product}=="Freecom Mobile Drive", 
SYSFS{idProduct}=="fcc7", SYSFS{idVendor}=="07ab", NAME="%k", 
SYMLINK+="usbhd&n"

---- Output of udevinfo -a -p /sys/block/sdb

   looking at device '/block/sdb':
     KERNEL=="sdb"
     SUBSYSTEM=="block"
     SYSFS{stat}=="      38      268      509      284        0        0 
        0        0        0      240      284"
     SYSFS{size}=="156301488"
     SYSFS{removable}=="0"
     SYSFS{range}=="16"
     SYSFS{dev}=="8:16"

   looking at device 
'/devices/pci0000:00/0000:00:02.2/usb3/3-1/3-1:1.0/host17/target17:0:0/17:0:0:0':
     ID=="17:0:0:0"
     BUS=="scsi"
     DRIVER=="sd"
     SYSFS{ioerr_cnt}=="0x0"
     SYSFS{iodone_cnt}=="0x2d"
     SYSFS{iorequest_cnt}=="0x2d"
     SYSFS{iocounterbits}=="32"
     SYSFS{timeout}=="30"
     SYSFS{state}=="running"
     SYSFS{rev}=="0000"
     SYSFS{model}=="MHV2080AH       "
     SYSFS{vendor}=="FUJITSU "
     SYSFS{scsi_level}=="3"
     SYSFS{type}=="0"
     SYSFS{queue_type}=="none"
     SYSFS{queue_depth}=="1"
     SYSFS{device_blocked}=="0"
     SYSFS{max_sectors}=="240"

   looking at device 
'/devices/pci0000:00/0000:00:02.2/usb3/3-1/3-1:1.0/host17/target17:0:0':
     ID=="target17:0:0"
     BUS==""
     DRIVER==""

   looking at device 
'/devices/pci0000:00/0000:00:02.2/usb3/3-1/3-1:1.0/host17':
     ID=="host17"
     BUS==""
     DRIVER==""

   looking at device '/devices/pci0000:00/0000:00:02.2/usb3/3-1/3-1:1.0':
     ID=="3-1:1.0"
     BUS=="usb"
     DRIVER=="usb-storage"
     SYSFS{modalias}=="usb:v07ABpFCC7d0001dc00dsc00dp00ic08isc06ip50"
     SYSFS{bInterfaceProtocol}=="50"
     SYSFS{bInterfaceSubClass}=="06"
     SYSFS{bInterfaceClass}=="08"
     SYSFS{bNumEndpoints}=="02"
     SYSFS{bAlternateSetting}==" 0"
     SYSFS{bInterfaceNumber}=="00"

   looking at device '/devices/pci0000:00/0000:00:02.2/usb3/3-1':
     ID=="3-1"
     BUS=="usb"
     DRIVER=="usb"
     SYSFS{configuration}==""
     SYSFS{serial}=="0381FECC0245"
     SYSFS{product}=="Freecom Mobile Drive"
     SYSFS{manufacturer}=="Freecom"
     SYSFS{maxchild}=="0"
     SYSFS{version}==" 2.00"
     SYSFS{devnum}=="20"
     SYSFS{speed}=="480"
     SYSFS{bMaxPacketSize0}=="64"
     SYSFS{bNumConfigurations}=="1"
     SYSFS{bDeviceProtocol}=="00"
     SYSFS{bDeviceSubClass}=="00"
     SYSFS{bDeviceClass}=="00"
     SYSFS{bcdDevice}=="0001"
     SYSFS{idProduct}=="fcc7"
     SYSFS{idVendor}=="07ab"
     SYSFS{bMaxPower}=="500mA"
     SYSFS{bmAttributes}=="c0"
     SYSFS{bConfigurationValue}=="1"
     SYSFS{bNumInterfaces}==" 1"



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